| helminth parasitisms among intermingling insular populations of white-tailed deer, feral cattle, and feral swine. | helminth infections among free-ranging, intermingling populations of white-tailed deer (odocoileus virginianus), cattle (bos taurus), and swine (sus scrofa) on an island off the georgia coast were studied. of 39 species of helminths collected, 19 were found in deer, 17 in cattle, and 13 in swine. of 28 species of helminths recovered from ruminants, 8, viz, capillaria bovis, cooperia punctata, dictyocaulus viviparus, gongylonema pulchrum, g verrucosum, haemonchus contortus, moniezia benedeni, and ... | 1975 | 123523 |
| occurrence of gastrointestinal parasites in georgia cattle. | a survey of gastrointestinal nematodes in georgia cattle was conducted from 1968 through 1973 from actual worm counts from viscera of 145 slaughtered beef cattle or from egg counts made from fecal samples from 3,273 beef and 100 dairy cattle. beef cattle were grouped as calves, yearlings, and cows. dairy cattle were grouped as calves, replacement heifers, and cows. results of fecal examinations positive; 99.5, 99.3, 99.6, and 41.2% of the calves, yearlings, drylot calves, and cows, respectively, ... | 1975 | 123711 |
| controlled test of anthelmintic activity of levamisole administered to calves via drinking water, subcutaneous injection, or alfalfa pellet premix. | a controlled test of the activity of 3 formulations of levamisole, at the dose level of approximately 8 mg/kg, against naturally occurring infections of gastrointestinal parasites and lungworms was made in 24 calves allotted to 4 groups of 6 calves each. levamisole was administered to group i calves in the drinking water, to group ii calves by subcutaneous injection, and to group iii calves by feeding alfalfa pellets mixed in corn silage; group iv calves were nontreated controls. group i calves ... | 1975 | 125055 |
| occurrence and seasonal behavior of gastrointestinal nematodes infecting maine dairy cattle. | gastrointestinal tracts of 48 yearling maine dairy cattle were examined (8 animals every 2 months) for 1 year. adult and immature nematodes were identified and counted. species recovered were bunostomum phlebotomum, cooperia mcmasteri, cooperia oncophora, cooperia pectinata, cooperia punctata, haemonchus placei, nematodirus helvetianus, oesophagostomum radiatum, ostertagia circumcincta, ostertagia lyrata, ostertagia ostertagi, trichostongylus axei, and trichuris ovis. strongyle parasitism was ob ... | 1977 | 145192 |
| [helminth fauna of syrian cattle]. | in this work the stomach and the small intestine of 34 and the large intestine of 4 more cattle were examined. 91,17% of the examined cattle (31 in 34 animals) had infected the stomach and/or the small intestine by parasites. 14 kinds of nematodes were found. the average intensity of infection of the stomach was higher than that of the small intestine. with the exception of higher infection in 3 stomachs and 2 small intestines the intensity of infection in all other cases was from small to mediu ... | 1979 | 453633 |
| avermectins, new family of potent anthelmintic agents: efficacy of the b1a component. | when given to sheep as a single oral dose at 0.1 mg/kg, the b(1a) component of the avermectins caused a reduction of >95% in the numbers of haemonchus contortus, ostertagia circumcincta (including inhibited l(4) larvae), trichostrongylus axei, trichostrongylus colubriformis, cooperia oncophora, and oesophagostomum columbianum. when given to cattle as a single oral dose at 0.1 mg/kg, avermectin b(1a) was >95% effective in reducing the numbers of haemonchus placei, ostertagia ostertagi (including ... | 1979 | 464563 |
| thiophanate in the treatment of cooperia punctata, c pectinata and haemonchus placei in cattle. | | 1979 | 532046 |
| the seasonal incidence of helminth parasites of cattle in the northern transvaal bushveld. | during a period of 14 months two tracer calves per month were slaughtered after one month's exposure to natural helminth infestation on a farm in the northern transvaal bushveld. total parasitic helminth burdens, which were never large, were determined in order to define their seasonal incidence. the gastro-intestinal parasites that were recovered were bunostomum phlebotomum, cooperia pectinata, cooperia punctata, haemonchus placei, oesophagostomum radiatum and trichostongylus spp. of these coop ... | 1979 | 551181 |
| cryopreservation of the infective larvae of the common nematodes of ruminants. | exsheathed infective larvae (l 3) of 19 species of nematodes were tested for infectivity in either sheep or cattle after they had been frozen in 0,9% nacl solution, stored for a relatively short time in the gas phase of liquid nitrogen and subsequently thawed. in addition, 13 of these species were tested after similar storage for up to 18 months. in sheep, haemonchus contortus, ostertagia circumcincta, trichostrongylus axei, trichostrongylus colubriformis, nematodirus spathiger and oesophagostom ... | 1977 | 566412 |
| [natural development of gastrointestinal helminthiasis in calves born during the dry season in guaira, state of são paulo, brazil]. | proceeding with their observations on bovine nematode epidemiology in guaíra, state of são paulo, the authors carried a study on the natural development of nematode infections in crossbred calves born at the dry season. the fecal nematode egg counts per gram (e.p.g.) performed every fortnight were positive at the start, in october, when calves were two months old, and reached the peak when they were five months old; cultures of faeces revealed larvae of cooperia, haemoncus, oesophagostomum and t ... | 1978 | 754678 |
| utilization of propionic acid by the l4 and adult stages of cooperia punctata (nematoda: trichostrongylidae) grown in vitro. | cultures of cooperia punctata, a nematode parasitic in cattle, were studied in ae medium at a ph of 7.2 to 7.3 under air. in fourth and fifth stages of development, they absorbed or otherwise took into their free pool and tissues, carbon derived from 14c-labeled sodium propionate and converted, by pathways not elucidated, a portion of this carbon into protein and lipid fractions. thirty minutes postincubation in balanced slat solution was adequate to reduce the amount of isotope in the nematode ... | 1977 | 870673 |
| effects of repeated desiccation on survival of infective cooperia punctata laarvae. | | 1977 | 915638 |
| anthelmintic activity of albendazole against gastrointestinal nematodes in calves. | anthelmintic activities of albendazole were evaluated in a controlled experiment. forty calves experimentally infected with gastrointestinal nematodes were allotted to 4 groups. calves in group 1 were used as nonmedicated controls; calves in groups 2, 3, and 4 were given (by oral route) a suspension containing albendazole at dose concentrations of 2.5, 5.0, and 7.5 mg/kg of body weight on the 35th day after administration of infective nematode larvae. in groups 2, 3, and 4 calves, average overal ... | 1977 | 921039 |
| alkaline phosphatase activities in intestinal mucosa from calves infected with cooperia punctata and eimeria bovis. | thirty calves 12 weeks of age raised under essentially parasite-free conditions were used to determine the effects of cooperia punctata and eimeria bovis (in single and combination infections) on mucosal alkaline phosphatase activities at 8 locations in the small intestine. in experiment 1, 5 calves infected with c punctata 3 weeks previously had highly significant (p less than 0.01) reductions in mucosal alkaline phosphatase activities compared with those in 5 noninfected control calves. these ... | 1976 | 949116 |
| intestinal nematodes of white-tailed deer in southeastern united states. | the small intestine, large intestine, and cecum of 975 white-tailed deer (odocoileus virginianus) from 83 localities in 13 southeastern states were examined for nematodes. in order of prevalence, the following parasites were found: capillaria bovis, eucyathostomum webbi, monodontus louisianensis, nematodirus odocoilei, oesophagostomum venulosum, trichuris sp, cooperia punctata, trichostrongylus longispicularis, strongyloides sp, cooperia oncophora, cooperia spatulata, cooperia sp, and trichostro ... | 1976 | 977456 |
| detection of activity for various anthelmintics against in vitro-produced cooperia punctata. | the in vitro-grown parasitic stages of cooperia punctata were used to evaluate 28 compounds with different kinds and degrees of in vivo activity. using presumptive and confirmatory tests, it was possible to establish a group order of in vitro potency that compared favorably with an order based on established in vivo use of these compounds. the procedure lends itself to evaluating activity against a given parasitic growth stage and gives a quantitative estimate (range) of the concentration that p ... | 1975 | 1173210 |
| [inhibition of the development of larvae of cooperia punctata and cooperia pectinata in zebus of niger]. | | 1975 | 1208924 |
| anthelmintic activity of paraherquamide in calves. | paraherquamide, an oxindole alkaloid metabolite of penicillium paraherquei and penicillium charlesii, was tested against the adult stages of nine common gastrointestinal and lung nematodes of calves at single, oral dosages of 0.5, 1.0, 2.0 or 4.0 mg kg-1. at dosages 1.0-4.0 mg kg-1 there was 95% or more removal of haemonchus placei, ostertagia ostertagi, trichostrongylus axei, trichostrongylus colubriformis, cooperia oncophora, nematodirus helvetianus, oesophagostomum radiatum, and dictyocaulus ... | 1992 | 1413457 |
| efficacy of cydectin moxidectin 1% injectable against experimental infections of dictyocaulus viviparus and bunostomum phlebotomum superimposed on natural gastrointestinal infections in calves. | twenty male holstein calves averaging 105 kg in weight and naturally infected with gastrointestinal nematodes and small numbers of lungworm and hookworm, were given experimental infections with the two latter species to provide adult and larval stages for anthelmintic evaluation. following random allotment, one group of 10 calves was injected subcutaneously with moxidectin at a dosage of 0.2 mg kg-1 of body weight. a second group of 10 was injected subcutaneously with unmedicated blank vehicle a ... | 1992 | 1413460 |
| efficacy of moxidectin against naturally acquired nematode infections in cattle. | the efficacy of moxidectin, a new endectocide against natural nematode infections, was evaluated. twenty-five calves were divided into two groups of eight calves each and a third group of nine calves. moxidectin was administered s.c. to two groups (i, 0.2 mg kg-1 body weight (bw); ii, 0.3 mg kg-1 bw) and the third group (iii) received the vehicle (placebo) s.c. two pre-treatment and one post-treatment faecal nematode egg count determinations were made from all calves, and they were necropsied 2 ... | 1992 | 1502785 |
| efficacy of ivermectin delivered from a sustained-release bolus against inhibited early fourth-stage larvae of ostertagia ostertagi and other nematodes in cattle. | the anthelmintic efficacy of ivermectin (ivm) delivered from a sustained-release (sr) bolus was evaluated against natural infections with gastrointestinal tract nematodes in 12 crossbred beef heifers in spring. the 12 calves were randomly allotted to 2 groups of 6 calves each. group-1 calves were treated with an sr bolus designed to deliver 8 mg of ivermectin/d. group-2 calves were nontreated controls. cattle groups were kept in separate concrete-floored pens (grass hay nutrition) and slaughter ... | 1992 | 1524310 |
| the seasonal epidemiology of gastrointestinal nematodes in n'dama cattle in the gambia. | from june 1987 to june 1988, a total of 180 n'dama cattle were necropsied to identify and enumerate parasites present, including 39 sick calves and 25 dead calves from local village herds, and 116 adult cattle from a local abattoir. of 175 animals infected with one or more helminths (97%), haemonchus contortus was found in 67% of all necropsied animals, cooperia punctata in 75%, cooperia pectinata in 55%, oesophagostomum radiatum in 71% and bunostomum phlebotomum in 21%. there was a wide range o ... | 1990 | 2238429 |
| prevalence of cooperia punctata, c. pectinata and c. oncophora infections in dairy calves in brazil. | cooperia is the most prevalent helminth parasitizing calves in brazil. three species of this genus occur most often: c. punctata, c. pectinata and c. oncophora. six calves from dairy farms in the south of the state of minas gerais aged six to 15 months were killed and necropsied each month over a period of two years. the cooperia species were identified, counted, and the numbers related to the calves' age. the worm burdens due to the three species of cooperia were statistically different. c. pun ... | 1990 | 2283473 |
| dermal responses to ostertagia ostertagi in ostertagia ostertagi- and cooperia punctata-inoculated calves. | calves harboring patent ostertagia ostertagi or cooperia punctata were given intradermal injections of o ostertagi 3rd-stage larval antigen. the initial injections were followed 30 days later by a 2nd series of injections. skin thickness was measured at injection sites for 72 hours after injection. selected injection sites including saline solution control sites were biopsied at 30 minutes, at 3, 24, 48, and 72 hours, and at 30 days after injection. after the 1st series of injections, there was ... | 1985 | 2409852 |
| inhibited development of trichostrongylid worms in grazing cattle. | inhibition of development of gastro-intestinal trichostrongylid worms was studied using successive groups of tracer calves and groups of continuously grazed calves over one year in the tully area of north queensland lowland wet tropics. the results, assessed by means of worms from these calves recovered at necropsy 3 weeks after their removal from pastures, showed inhibition in the development of haemonchus placei and cooperia punctata at the early fourth stage at the approach to and during the ... | 1989 | 2590137 |
| helminth parasites of intermingling axis deer, wild swine and domestic cattle from the island of molokai, hawaii. | helminth infections of axis deer (cervus axis), wild swine (sus scrofa) and domestic cattle (bos taurus) were studied among intermingling herds on the puu-o-hoku ranch, molokai, hawaii. twenty-four species of helminths were collected from the 10 deer, 10 swine and 10 cattle. capillaria bovis, cooperia punctata, haemonchus contortus and trichostrongylus axei infected both axis deer and cattle, whereas gongylonema pulchrum infected both axis deer and wild swine. none of the species of helminths oc ... | 1989 | 2716106 |
| immunogenic effects of culture-derived exoantigens of cooperia punctata on calves before and after challenge exposure with infective larvae. | the parasitic stages of cooperia punctata were cultivated in vitro, and the incubation fluid from these stages containing exoantigen (exoag; metabolites, secretions, excretions) was diafiltered (retaining material of approximate molecular weight greater than 10,000), concentrated, and lyophilized. using serum of calves immune to c punctata, exoag activity was verified by agar gel immunodiffusion. the exoag was combined with adjuvants and was inoculated into calves. results of preliminary experim ... | 1988 | 3128952 |
| abundance and survival of infective larvae of the cattle nematodes cooperia punctata, haemonchus placei and oesophagostomum radiatum from faecal pats in a wet tropical climate. | observations were made on the abundance and survival of haemonchus placei, cooperia punctata and oesophagostomum radiatum infective larvae from cattle faecal pats exposed at various times of the year in north queensland wet tropics. pats exposed in the hot, wet season yielded abundant larvae on herbage. in the dry season, although low numbers of infective larvae were usual, considerable numbers were produced under conditions of heavy dews on dense herbage. irrespective of season of deposition of ... | 1988 | 3190586 |
| efficacy of oxfendazole against inhibited larvae of ostertagia ostertagi acquired by calves in the spring. | during the spring of 1985, 40 calves grazed pastures known to have high numbers of spring inhibition-prone, infective ostertagia ostertagi larvae. calves were removed from pasture and placed in outdoor pens with concrete floors from 10 days prior to treatment until necropsy 14 days after treatment. ten calves were allocated to each of 4 treatment groups, and oxfendazole was administered to each group by intraruminal injection at dosages of 0, 2.25, 4.5, and 6.75 mg/kg of body weight. efficacies ... | 1988 | 3421523 |
| efficacy of ivermectin against the abomasal nematode mecistocirrus digitatus in naturally infected zebu calves. | anthelmintic efficacy of ivermectin against mecistocirrus digitatus was evaluated in 10 naturally infected zebu calves. group 1 (n = 5) was not treated, and group 2 (n = 5) was treated sc with 200 micrograms of ivermectin/kg of body weight. calves were euthanatized 14 or 15 days after treatment. there was 100% overall reduction of m digitatus in treated calves, which was significant (p = 0.0079) compared with reduction in controls. cooperia punctata, haemonchus similis, and trichostrongylus axei ... | 1987 | 3434907 |
| efficacy of fenbendazole-medicated feed blocks against gastrointestinal nematode infections in calves. | an anthelmintic trial was conducted to determine the efficacy of fenbendazole (fbz) incorporated into two types of feed blocks given daily for 3 or 10 days to calves naturally parasitized with gastrointestinal nematodes. each treated calf consumed 5 mg of fbz/kg of body weight. the fbz was greater than 99% effective in removing adults of haemonchus contortus, ostertagia ostertagi, o lyrata, cooperia punctata, c pectinata, c onchophora, trichostrongylus axei, bunostomum phlebotomum, and oesophago ... | 1987 | 3605803 |
| prophylaxis of nematode infections in cattle with an indwelling rumino-reticular ivermectin sustained release bolus. | ivermectin delivered continuously from a rumino-reticular sustained release device was prophylactically effective in preventing establishment of nine nematode parasite species in multiply-exposed cattle. ivermectin dosages which permitted less than or equal to 1% of infected control calf worm populations to establish ranged from less than 2.5 micrograms kg-1 day-1, which totally prevented infection with dictyocaulus viviparus and oesophagostomum radiatum, to approximately equal to 30 micrograms ... | 1986 | 3788027 |
| efficacy of an albendazole feed formulation against bovine gastrointestinal nematodes including arrested larvae of ostertagia ostertagi. | the efficacy of an albendazole feed premix formulation was compared with that of an albendazole drench suspension for control of gastrointestinal nematodes in 31 beef cattle. the premix (11 cattle) and drench suspension (9 cattle) were found to have similar efficacies at a dosage of 7.5 mg/kg of body weight. when compared with controls (11 cattle), both formulations caused significant (p less than 0.05) reductions in worm counts with an efficacy of 98% or greater against adult haemonchus placei, ... | 1986 | 3946888 |
| functional morphology and histochemistry of structural proteins of the genital cone of cooperia punctata (von linstow, 1907) ransom, 1907, a nematode parasite of ruminants. | | 1969 | 4188270 |
| isolation and partial characterization of exo- and endoantigens of cooperia punctata cultured in vitro. | | 1974 | 4214906 |
| overwintering of bovine gastrointestinal nematodes in southwestern ontario. | several steers, reared in isolation until approximately six months of age, were placed on a small isolated enclosed pasture from late spring to late fall of 1970, 1971 and 1972. the pasture was left vacant and unused during the winters and early springs. the pasture had been used in previous years by cattle, and in the late spring of 1970 was grazed by cattle know to be passing gastrointestinal nematode eggs in their feces. the steers were slaughtered periodically, and the prevalence of nematode ... | 1974 | 4272963 |
| efficacy of commercial bovine serum as a component of media used to grow cooperia punctata in vitro. | | 1973 | 4696573 |
| the use of in vitro-grown cooperia punctata (nematoda: trichostrongyloidea) to study incorporation of carbon from d-glucose-u- 14 c into major chemical fractions. | | 1973 | 4696575 |
| the influence of ph on the in vitro development of cooperia punctata (ransom, 1907). | | 1973 | 4744514 |
| completion of the life cycle of cooperia punctata in vitro. | | 1971 | 5105971 |
| anthelmintic activity of trichlorfon, coumaphos, and naphthalophos against the in vitro grown parastic stages of cooperia punctata. | | 1971 | 5157153 |
| the effect of oral parbendazole against ostertagia ostertagi and cooperia punctata in experimentally infected calves. | | 1970 | 5411561 |
| partial resistance of calves to cooperia punctata following subcutaneous inoculation of homologous infective larvae. | | 1968 | 5647119 |
| efficacy and safety of l-tetramisole hydrochloride in experimental cooperia punctata infection of dairy calves. | | 1969 | 5812435 |
| development to viable egg production in the rabbit duodenum of parasitic stages of cooperia punctata grown in vitro. | | 1966 | 5948923 |
| in vitro cultivation of cooperia punctata from egg to egg. | | 1967 | 6062055 |
| survival of infective larvae of the cattle nematodes, cooperia punctata, trichostrongylus axei, and oesophagostomum radiatum. | | 1967 | 6068246 |
| efficacy of avermectin b1a for treatment of experimentally induced nematode infections in cattle. | two formulations of avermectin b1a, c-076 and mk-933, were examined for anthelmintic activity in two trials, each using 20 calves with experimentally produced nematode infections. in one trial, c-076 was given orally, and in the other trial, mk-933 was given by injection at dosages of 50, 100, and 200 micrograms/kg of body weight. treated calves were held for 7 to 8 days and then, together with nontreated controls, were euthanatized and were examined for nematodes in their gastrointestinal tract ... | 1980 | 6449894 |
| lymphocyte reactivity to ostertagia ostertagi l3 antigen in type i ostertagiasis. | to better understand the immune response of calves infected with ostertagia ostertagi, studies were conducted to examine cell-mediated immune responses to l3 antigen and phytohemagglutinin (pha) by lymphocyte reactivity assay. the l3 antigen was prepared by freeze-thawing and sonication of exsheathed o ostertagi l3. antigen preparations contained 40 to 60 micrograms of protein/ml and no detectable endotoxin. cell-mediated immune responses of peripheral blood lymphocytes were determined in 3 grou ... | 1984 | 6608886 |
| importance of gastro-intestinal helminths in calves in papua new guinea. | gastro-intestinal nematodes caused poor growth rates and high mortality in undrenched calves when weaning preceded the wet season. cooperia punctata and haemonchus placei were the dominant species throughout the year with worm burdens and pasture contamination being highest during the wet season and lowest in the dry season. histotropic stages occurred throughout the year in weaner calves but with a clear peak during the wet season. the development of host resistance against the most important w ... | 1983 | 6868131 |
| use of oxfendazole against natural infestations of haemonchus placei, cooperia punctata, cooperia pectinata and oesophagostomum radiatum in calves. | | 1982 | 7123665 |
| the seasonal incidence of helminth parasites of cattle in the eastern transvaal lowveld. | two helminth-free tracer calves were exposed to natural helminth infestation of a farm in the eastern transvaal lowveld for one month. on a nearby farm calves grazed with the herd for at least 3 months before slaughter so that the cumulative worm burden could be determined. the gastro-intestinal parasites increased markedly after rain. the major species and order or prevalence were: cooperia pectinata, cooperia punctata, haemonchus placei and oesophagostomum radiatum; minor species were bunostom ... | 1982 | 7175905 |
| [diffusion of helminth parasites of the digestive system and respiratory system in deer (cervus elaphus) of the la mandria regional park (piedmont)]. | a study was carried out on the diffusion of helminth parasites of liver, gastrointestinal system and bronchial system in 68 red deer (cervus elaphus) from regional park "la mandria" (piedmont, italy). the following species of nematodes were identified: trichostrongylus axei, spiculopteragia spiculoptera, rinadia mathevossiani, cooperia oncophora, cooperia pectinata, cooperia punctata, cooperia zurnabada, oesophagostomum venulosum, dictyocaulus eckerti, varestrongylus sagittatus. studies on some ... | 1980 | 7312394 |
| parasitic infection of camelus dromedarius from iran. | 25 intestinal tract, 30 oesophagus and respiratory organs and 47 liver of arabian camel were examined. 35 species of nematodes two species of cestodes one immature trematode one cestodes larvae, one diptera larvae, one microfilaria of lung worm and two external parasites were found. this is a first report of helminths in camel from iran. the nematodes: physocephalus sexalatus, ascarops strongylina, haemonchus contortus, cooperia punctata, nematodirus oratianus, nematodirella longissimespiculata, ... | 1980 | 7460130 |
| comparative efficacy of levamisole, thiabendazole and fenbendazole against cattle gastrointestinal nematodes. | efficacy of two older anthelmintics, levamisole and thiabendazole, was compared with a newer benzimidazole, fenbendazole, against naturally acquired gastrointestinal nematode infections in cattle superimposed with experimental infections of bunostomum phlebotomum and dictyocaulus viviparus. twenty-four crossbred beef heifers of 7-9 months of age and 152 kg in average weight were randomly allocated to four groups of six calves. the cattle grazed on pastures contaminated with larvae of gastrointes ... | 1995 | 7676603 |
| efficacy of injectable abamectin against gastrointestinal tract nematodes and lungworms of cattle. | efficacy of abamectin against gastrointestinal tract nematodes and lungworms of cattle was determined in 4 experiments. the first 2 experiments were controlled trials in which efficacy was determined at necropsy in calves with either experimentally induced (n = 14) or naturally acquired (n = 16) infections. half the calves in each experiment were treated with abamectin (200 micrograms/kg of body weight, sc), and half were left untreated as controls. efficacy was > 99% against adult stages of dic ... | 1994 | 8192257 |
| activity of doramectin against nematode endoparasites of cattle. | a series of 28 controlled anthelmintic studies, involving 634 cattle, was conducted throughout north america and europe to evaluate the efficacy of doramectin against a broad range of gastrointestinal parasitic nematode species and lungworms in naturally and experimentally infected animals. within each study, one or two groups were treated with doramectin at 200 micrograms kg-1 and another group received no drug treatment. worm burdens were estimated by standardised techniques, and efficacy asse ... | 1993 | 8236735 |
| use of reseeded pastures as an aid in the control of gastrointestinal nematodes. | the degree of nematode infectivity of a previously contaminated pasture which was reseeded after harvesting of a soya bean crop was determined by use of four tracer lambs and four tracer calves. the eight tracers were put to graze for 14 days and housed for another 14 days before being slaughtered, when faeces and the intestinal tracts were examined for worm eggs and parasites. with the exception of one animal, which was found to be harbouring 20 cooperia punctata, the tracers had no adult or im ... | 1993 | 8291191 |
| monospecific nematode infections of donor calves with cooperia punctata. | during a 25 year period, 48 calves from three states were raised helminth-free from birth and inoculated with cooperia punctata. these calves served sequentially as donors of the parasite. the following aspects of the monospecific infection were of value in successful donor management and contributed to understanding the host-parasite relationship. calves with no previous experience with c. punctata were the best hosts for establishing initial infections. male holstein calves were satisfactory d ... | 1995 | 8644447 |
| observations on the epidemiology of gastrointestinal nematodes of farmed red deer in central southern england. | the epidemiology of the gastrointestinal nematodes of farmed red deer was followed over three years on two farms in north hertfordshire. worm counts on 10 animals (four months to 10 years old) between november and march showed that mixed ostertagid infections were dominant with very small numbers of trichostrongylus axei, cooperia punctata and oesophagostomum species also present in some individuals. an increase in the faecal nematode egg count of the hinds in summer was followed by an increase ... | 1996 | 8883346 |
| efficacy of moxidectin 0.5% pour-on against naturally acquired nematode infections in cattle. | the efficacy of 0.5% moxidectin pour-on at two dosages was evaluated in 30 cattle with naturally acquired gastrointestinal nematode infections. the cattle were ranked according to pretreatment fecal egg counts and body weights, and were randomly assigned from replicates to three treatment groups. the mean number of trichostrongyle eggs in pretreatment fecal samples did not differ among the groups. groups i and ii received 0.5% moxidectin pour-on at dosages of 0.25 mg moxidectin per kg body weigh ... | 1996 | 8916402 |
| therapeutic and prophylactic efficacy of the ivomec sr bolus against nematodes and psoroptes ovis in cattle weighing more than 300 kg at the time of treatment. | three trials using 50 european breed cattle were conducted to evaluate the therapeutic and prophylactic efficacy of the ivomec sr bolus against nematodes (2 trials) and psoroptes ovis (1 trial) in cattle weighing more than 300 kg at the time of treatment. the ivomec sr bolus proved to be highly effective against economically important gastrointestinal and pulmonary nematodes (ostertagia ostertagi, trichostrongylus axei, cooperia punctata, oesophagostomum radiatum, dictyocaulus viviparus) and imp ... | 1997 | 9272566 |
| host specificity of sheep and cattle nematodes in são paulo state, brazil. | the trial was carried out to investigate parasite host specificity and to analyse the dynamics of infection with nematodes parasitizing sheep and cattle raised together or separately in são paulo state, brazil, and, also to clarify doubts about the systematics of species of the genus haemonchus on the basis of cytological and morphological studies. ten steers and 32 ewes were randomly assigned to three paddocks (p), as follows: p1, 5 steers; p2, 5 steers and 16 ewes; and p3, 16 ewes. the animals ... | 1997 | 9477496 |
| epidemiology of mecistocirrus digitatus and other gastrointestinal nematode infections in cattle in mindanao, philippines. | over a period of 14 months, faecal and serum samples were collected monthly from cattle of 1 to 30 months old on three ranches (20-25 animals ranch-1 sample-1) in mindanao, philippines. individual faecal egg counts, serum pepsinogen levels and mecistocirrus digitatus specific antibodies were determined, and infective larvae from pooled faecal samples were examined. post mortem worm counts were carried out on tracer calves (n = 16) that had been kept for 30 days with the herds on two of the ranch ... | 1998 | 9493308 |
| genetic evidence indicating that cooperia surnabada and cooperia oncophora are one species. | sequences of the second internal transcribed spacer (its-2) of ribosomal dna were determined for the trichostrongylid nematodes cooperia surnabada and cooperia oncophora, to test the hypothesis that they represent one species. also included for comparison were other morphologically distinct species within the genus, namely cooperia punctata and cooperia curticei. there were no differences in the consensus its-2 sequences between c. oncophora and c. surnabada, whereas each taxon differed from c. ... | 1998 | 9512997 |
| seasonal infection pattern of gastrointestinal nematodes of beef cattle in minas gerais state--brazil. | tracer calves were used to assess the seasonality of infections of gastrointestinal parasites in beef cattle extensively raised at a farm in the state of minas gerais, brazil. tracer calves acquired infections during all months of the year, however, highest worm burdens were observed in the rainy season. the following nematode species were recovered from tracer calves: cooperia punctata, c. spatulata, c. pectinata, haemonchus similis, h. placei, oesophagostomum radiatum, trichostrongylus colubri ... | 1998 | 9561708 |
| demonstration of shared carbohydrate epitopes in intestinal proteins of some bovine gastrointestinal nematodes. | the presence of shared carbohydrate intestinal epitopes in bovine gastrointestinal nematodes was demonstrated. proteins were extracted from the intestinal tissue of a laboratory strain of adult haemonchus placei and used to produce monoclonal antibodies (mab). analysis of this detergent extract by sodium dodecyl sulfate-polyacrylamide gel electrophoresis revealed 7-9 bands ranging from approximately 39 to 298 kda. the mabs reacted with periodate-sensitive epitopes and, in western blots, recogniz ... | 1998 | 9645850 |
| an abattoir survey of gastrointestinal nematode infections in cattle in the central highlands of kenya. | the gastrointestinal tracts of 672 crossbred cattle were obtained from various abattoirs in kiambu district, kenya from august 1992 to july 1993, and examined for the presence of gastrointestinal nematodes. eight nematode species were found in 583 (86.8%) of the animals. the nematodes were, in order of prevalence: haemonchus placei (67.0%), cooperia pectinata (53.0%), cooperia punctata (41.7%), oesophagostomum radiatum (38.4%), trichostronglyus axei (24.3%), nematodirus helvetianus (19.6%), tric ... | 1998 | 9778778 |
| differential in vitro pathogenicity of predatory fungi of the genus monacrosporium for phytonematodes, free-living nematodes and parasitic nematodes of cattle. | in vitro tests were carried out on the pathogenicity of nine isolates of the predatory fungi of the genus monacrosporium (5 m. sinense isolates, 3 m. appendiculatum and 1 m. thaumasium isolate) for a phytonematode (second stage juveniles from meloidogyne incognita, race 3), a free-living nematode (panagrellus spp), and two gastrointestinal parasitic nematodes of cattle (infective larvae of cooperia punctata and haemonchus placei). a suspension containing 2,000 nematodes from each species was add ... | 1999 | 10347773 |
| persistent efficacy of doramectin pour-on against artificially induced infections of nematodes in cattle. | two studies were conducted to determine the persistent efficacy of doramectin pour-on against an artificial, trickle challenge of mixed nematodes in calves. in each study, 42, 4-8 months old calves were randomly assigned into four groups of 10 animals each (t1-t4), plus two larval-viability monitor animals. all animals were treated with fenbendazole (10 mg kg(-1)) 14 days prior to the start of the study to clear any existing infection. doramectin pour-on at 500 microg kg(-1) was used on each ani ... | 1999 | 10384905 |
| differences in the second internal transcribed spacer (its-2) of eight species of gastrointestinal nematodes of ruminants. | genetic differences in the nucleotide sequence of the second internal transcribed spacers (its-2) among trichostrongylus axei, trichostrongylus colubriformis, ostertagia ostertagi, cooperia oncophora, cooperia punctata, nematodirus helvetianus, nematodirus filicollis, and haemonchus contortus are described. the its-2 sequences of the 8 species ranged between 230 and 241 base pairs in length. sequence similarities between the different genera varied between 60% and 80%. identities between the dif ... | 1999 | 10386433 |
| persistent efficacy of doramectin injectable against artificially induced infections with cooperia punctata and dictyocaulus viviparus in cattle. | three studies were conducted to evaluate the persistent efficacy of doramectin injectable solution against experimental challenges with infective larvae of cooperia punctata and dictyocaulus viviparus. in each study, four groups of ten randomly-assigned calves, negative for trichostrongyle-type eggs on fecal examination, were treated subcutaneously in the midline of the neck with saline (1 ml/50 kg) on day 0 or doramectin (200 microg/kg = 1 ml/50 kg) on day 0, 7, or 14. two additional calves fro ... | 1999 | 10392767 |
| gastro-intestinal parasites of cattle in the communal grazing system of botshabelo in the free state. | twelve bonsmara tracer calves (aged 6-12 months) were used to monitor helminth infections in the communal farming system of botshabelo in the free state. one calve was slaughtered each month from december 1995 to november 1996 and processed for helminth recovery. all the calves harboured worms, but the numbers were always low. the order of prevalence of the major parasites was trichostrongylus axei, haemonchus placei, cooperia punctata and cooperia pectinata. | 1999 | 10486833 |
| dose confirmation of moxidectin pour-on against natural nematode infections in lactating dairy cows. | the nematocidal effectiveness of moxidectin, administered topically at the rate of 500 mcg/kg bw, was determined for lactating dairy cows. naturally infected animals were given either topical vehicle or moxidectin (cydectin pour-on fort dodge animal health) at the rate of 1 ml/10 kg bw (10 animals per treatment group), and sacrificed 14-18 days post-treatment for nematode enumeration. 100% efficacies were recorded for ostertagia lyrata males, cooperia punctata males and oesophagostomum radiatum ... | 1999 | 10536978 |
| dynamics of the humoral immune response of calves infected and re-infected with cooperia punctata. | the dynamics of the humoral immune response of calves were analysed after primary infection and re-infection with the intestinal nematode cooperia punctata. 12 male 5 month-old holstein-friesian calves were randomly divided into two groups a and b. at the beginning of the experiment group a animals were each infected experimentally with a single oral dose of 130,000 infective third stage larvae (l3) of c. punctata. the animals of group b were kept as non-infected controls. the two calves from gr ... | 2000 | 10669099 |
| cooperia pectinata and c. punctata, parasites of the abomasum of cattle in northern cameroon (central africa). | cooperia pectinata ransom, 1907 and c. punctata von linstow, 1907 are common trichostrongyles of zebu cattle in africa. their intestinal localization within the digestive tract is considered by many authors to be exclusive. nevertheless, some limited surveys in malagasy, mauritania, the gambia and cameroon reported the presence of both cooperia species in the abomasum. the present survey was carried out in a slaughterhouse of northern cameroon on 17 zebu cattle and confirms the infection of the ... | 2000 | 10681031 |
| nematode parasites of adult dairy cattle in the netherlands. | abomasa, blood samples and faecal samples for examination of nematode infections were collected from 125 dairy cows during the period november 1997-october 1998. of these, 12 had no grazing history and were, therefore, excluded from this study. from the remaining 113, 88.5% had nematode eggs in the faeces. larval identification of the positive cultures showed that ostertagia spp. larvae were most frequent (97%), followed by trichostrongylus spp. (29%), oesophagostomum spp. (23%), cooperia puncta ... | 2000 | 10799842 |
| the epidemiology of nematode and fluke infections in cattle in the red river delta in vietnam. | over a period of 13 months, faecal samples were collected monthly from approximately 45 cattle over 3 months of age. additionally, 74 calves of 1-2 months were sampled to determine the presence of toxocara vitulorum eggs. individual egg counts and infective strongyle larvae from pooled faecal samples were examined. post-mortem worm counts were carried out on six groups of tracer calves (n=12) that had been kept for 4 weeks on pasture in and around the village studied. the following helminths wer ... | 2000 | 11035232 |
| a multiplex pcr assay for differentiating economically important gastrointestinal nematodes of cattle. | a multiplex polymerase chain reaction (pcr) test was developed for identifying gastrointestinal (gi) nematodes that commonly infect cattle. this assay was developed using adult-derived genomic dna and shown capable of discriminating parasite eggs from the feces of experimentally-infected animals at both the species and genus levels. sequence data from internal (its) and external (ets) transcribed spacers of the ribosomal dna (rdna) repeats as well as the 3'-end of the small subunit rdna and 5'-e ... | 2001 | 11390072 |
| in vitro interaction of brazilian strains of the nematode-trapping fungi arthrobotrys spp. on panagrellus sp. and cooperia punctata. | in vitro tests were carried out to verify the activity of 26 brazilian isolates of predatory fungi of the genus arthrobotrys on a free-living nematode (panagrellus sp.) and on infective larvae of cooperia punctata, a parasitic gastrointestinal nematode of cattle. the results showed that the free-living nematode panagrellus sp. was the most preyed upon, compared to c. punctata, for all the fungal treatments. also, variable predatory capacity was observed for different fungal isolates belonging to ... | 2001 | 11562716 |
| titration of subcutaneously administered eprinomectin against mature and immature nematodes in cattle. | eprinomectin has been approved for use as a topically applied endectocide for beef and dairy cattle. to determine if eprinomectin has utility as an injectable anthelmintic, it was titrated at 0.05, 0.1, and 0.2 mg/kg s.c. against adult (trial 1) and at 0.05, 0.1, 0.14, and 0.2 mg/kg s.c. against immature (trial 2) stages of lung and gastrointestinal nematodes in cattle. in trial 1, every dose of subcutaneously delivered eprinomectin showed maximal or near-maximal (> or = 99%) efficacy against ha ... | 2001 | 11780839 |
| a cooperia punctata gene family encoding 14 kda excretory-secretory antigens conserved for trichostrongyloid nematodes. | a polymorphic set of 14 kda excretory-secretory (e-s) antigen-encoding cdnas, with similarity to a previously characterized 15 kda e-s antigen of haemonchus contortus, was cloned from cooperia punctata. five cdnas encoding predicted proteins of 70-80% identity were sequenced. genomic analyses of individuals proved the existence of three 14 kda e-s antigen-encoding genes, excluding that the differences reflected polymorphisms between individuals in a population. southern blots indicated the prese ... | 2001 | 11814050 |
| cooperia punctata trickle infections: parasitological parameters and evaluation of a cooperia recombinant 14.2 kda protein elisa for estimating cumulative exposure of calves. | three groups of four calves each were trickle infected with three different levels of cooperia punctata: 310 (group a), 1250 (group b) and 5000 (group c) third stage infective larvae (l3) twice a week over a 17-week period. group d was the non-infected control group. parasitological parameters as faecal egg counts (epg), worm burdens, size of worms and number of eggs per female were collected and the differences between the groups compared. serological analyses were also conducted to investigate ... | 2002 | 11900927 |
| a family of activation associated secreted protein (asp) homologues of cooperia punctata. | activation-associated secreted proteins (asp) of nematodes have been studied as potential vaccine components. in this study we report the cloning and analysis of cdna and genomic sequences of cooperia punctata and establish the presence of two 75% identical asp-1 genes in c. punctata. additional c. punctata asp paralogues were shown to be present. analysis of pcr products amplified from genomic dna from a pool of worms revealed extensive sequence diversity within this family of proteins, reflect ... | 2002 | 12443689 |
| multispecies and multiple anthelmintic resistance on cattle nematodes in a farm in argentina: the beginning of high resistance? | there are very few resistance records on cattle nematodes. south american successive records have been increasing rapidly since the year 2000. in argentina, increasing dissatisfaction based on the exclusive use of macrocyclic lactones has prompted the use of benzimidazoles in the pampean region. the studied farm is located in the argentina humid pampas and had apparently poor results after anthelmintic treatments. evaluation of resistance was firstly based on faecal egg reduction after treatment ... | 2003 | 12911862 |
| the life history of cooperia punctata, a nematode parasitic in cattle. | | 1954 | 13184379 |
| growth rate and other signs of infection in calves experimentally infected with cooperia punctata. | | 1961 | 13682414 |
| studies on bovine gastro-intestinal parasites. xxi. immunity to cooperia punctata and oesophagostomum radiatum. | | 1960 | 13768596 |
| incidence of parasites in calves in hawaii and the treatment of cooperia punctata, with special reference to the efficacy of ruelene. | | 1960 | 13792651 |
| studies on bovine gastrointestinal parasites. xxv. duration of egg production of cooperia punctata, trichostrongylus axei, and oesophagostomum radiatum. | | 1962 | 13934153 |
| the effects of time and temperature on the infectivity of third-stage larvae of cooperia punctata (trichostrongylidae) in the domestic rabbit, oryctolagus cuniculus l. | | 1964 | 14125931 |
| biology of cooperia punctata (nematoda: trichostrongylidae) in the domestic rabbit. | | 1965 | 14275197 |
| the efficacy of thiabendazole against cooperia oncophora, cooperia punctata, and ostertagia ostertagi in cattle. | | 1965 | 14316781 |
| gastrointestinal nematodes in indigenous zebu cattle under pastoral and nomadic management systems in the lower plain of the southern highlands of tanzania. | this study aimed to determine the prevalence and intensity of gastrointestinal nematode infections in indigenous zebu cattle in the lower plain (lowland zone) of the southern highlands of tanzania. gastrointestinal tracts were randomly purchased at the iringa regional abattoir and at kihesa and ipogolo slaughter slabs in different seasons of the year. the contents of the abomasum, small intestine and large intestine were processed separately to recover the worms. the results indicated that 140 o ... | 2003 | 14509451 |
| histopathological changes during experimental infections of calves with cooperia punctata. | eleven male two-month-old holstein calves were used to determine the pathological changes induced by a cooperia punctata infection. after weaning, ten calves received a single oral dose of 45,000 c. punctata infective larvae. one calf remained as a non-infected control. groups of two calves were killed on days 7, 14, 21, 28 and 35 post-infection (p.i.) for determination of worm burdens and histopathological evaluation. the small intestine was sub-divided into three sections of approximately equa ... | 2004 | 15153289 |
| probable multigeneric resistance to macrocyclic lactone anthelmintics in cattle in new zealand. | to establish the efficacy of topical formulations of eprinomectin and abamectin against naturally acquired abomasal and small intestinal nematode infections in cattle purchased from a north island bull-beef property. | 2003 | 16032313 |
| parasitism among white-tailed deer and domestic sheep on common range. | parasitism was studied in white-tailed deer (odocoileus virginianus) and domestic sheep (ovis aries) which shared a common range in eastern west virginia. of 30 species of internal parasites, 11 were found in deer and 22 in sheep. five parasites, sarcocystis sp., cysticercus tenuicollis, oesophagostomum venulosum, cooperia punctata, and gongylonema pulchrum, occurred in both deer and sheep. an index of similarity of 17.2 suggests that the parasite faunas of these hosts are distinct, and that it ... | 1976 | 16498882 |
| field study on nematode resistance in nelore-breed cattle. | the present study evaluated nelore cattle with different degrees of resistance to natural infections by gastrointestinal nematodes. one hundred weaned male cattle, 11-12 months of age, were kept on the same pasture and evaluated from october 2003 to february 2004. faecal and blood samples were collected for parasitological, haematological and immunological tests. in february 2004, the 10 most resistant and the 10 most susceptible animals were selected based on individual means of nematode faecal ... | 2007 | 17659839 |
| studies on calves experimentally infected with cooperia punctata (v. linstow, 1907) ransom, 1907. | | 1949 | 18121303 |
| immunological responses and cytokine gene expression analysis to cooperia punctata infections in resistant and susceptible nelore cattle. | cellular and humoral immune response, as well as cytokine gene expression, was assessed in nelore cattle with different degrees of resistance to cooperia punctata natural infection. one hundred cattle (male, weaned, 11-12 months old), kept together on pasture, were evaluated. faecal and blood samples were collected for parasitological and immunological assays. based on nematode faecal egg counts (fec) and worm burden, the seven most resistant and the eight most susceptible animals were selected. ... | 2008 | 18513872 |