| [seasonal cycle of strongylus in cattle on réunion island]. | an experiment with tracer calves was conducted in reunion island to determine the seasonal fluctuations of parasites in one of the most important rearing area, and to provide basis for a drenching programme. after being exposed to infestation for 28-31 days, two calves are slaughtered each month and their worms identified and counted. four genera area prevalent : trichostrongylus and ostertagia rise in late winter--early summer; cooperia and oesophagostomum in early summer and again in late summ ... | 1981 | 7346911 |
| the use of multilevel models to evaluate sources of variation in reproductive performance in dairy cattle in reunion island. | sources of variation in measures of reproductive performance in dairy cattle were evaluated using data collected from 3207 lactations in 1570 cows in 50 herds from five geographic regions of reunion island (located off the east coast of madagascar). three continuously distributed reproductive parameters (intervals from calving-to-conception, calving-to-first-service and first-service-to-conception) were considered, along with one binomial outcome (first-service-conception risk). multilevel model ... | 2001 | 11448500 |
| temperature effects on development and survival of two stable flies, stomoxys calcitrans and stomoxys niger niger (diptera: muscidae), in la réunion island. | two stable fly species, stomoxys calcitrans (l., 1758) and stomoxys niger niger macquart, 1851, co-occur in la reunion, where they are important pests of cattle. the survival and developmental rate of the immature stages were compared at five constant temperatures from 15 to 35 degrees c. in both species, immature survival was highest at 20-25 degrees c and markedly decreased at 15 and 35 degrees c. at the lower temperatures, mortality was observed mainly for s. calcitrans larvae and s. niger eg ... | 2005 | 15966110 |
| precalving factors affecting conception risk in holstein dairy cows in tropical conditions. | the objective of this study was to identify precalving nutritional risk factors that may affect variation in first service conception risk in 21 commercial holstein dairy herds in a tropical environment (reunion island). the data set included 473 lactation records in 404 cows. a multivariate logistic-regression model including herd as a random effect was used to analyse the relationship between first service conception risk and energy status (body condition score, plasma glucose, insulin, choles ... | 2007 | 17572480 |
| postcalving factors affecting conception risk in holstein dairy cows in tropical and sub-tropical conditions. | the objective was to identify postpartum risk factors between nutritional imbalance and health disorders affecting first-service conception risk (fscr) in 21 commercial holstein herds in reunion island. multivariate logistic-regression models including herd as a random effect were used to analyze the relationship between fscr and energy status, nitrogen status, hepatic function, mineral deficiencies, and postpartum health disorders. two models (a and b) were built on two subsets of data (n=446 a ... | 2008 | 18061251 |
| relationships between chemical properties of larval media and development of two stomoxys species (diptera: muscidae) from reunion island. | the development of two cattle pests, stomoxys calcitrans l. and stomoxys niger niger macquart (diptera: muscidae), was studied in the laboratory using seven potential larval media from a dairy farm on reunion island. the media were six types of cattle feed and an old manure medium. egg-to-adult survival, duration of development, and adult live weight at emergence were determined for both fly species on each medium. the media were analyzed for ph, nitrogen, organic matter, and structural compound ... | 2008 | 18348795 |
| potential impacts of climate change on stable flies, investigated along an altitudinal gradient. | adult populations of stable flies were sampled along an altitudinal transect in reunion island to determine whether higher temperatures were associated with: (a) higher numbers of flies; (b) a longer season of infestation, and/or (c) different responses to warming in the cosmopolitan stomoxys calcitrans (l) and the tropical stomoxys niger niger macquart (diptera: muscidae). flies of both species were trapped at seven farms situated at four altitudes (100-1600 m a.s.l.) over a 90-week period. for ... | 2008 | 18380657 |
| efficiency in milk production on reunion island: dealing with land scarcity. | this paper aims to analyze efficiency on dairy farms in reunion island, a french overseas district located in the indian ocean. on this island, dairy farming is promoted with financial and technical support from the european union, with the french and local governments aiming at reducing dependency on imports of milk powder and dairy products and creating employment. a critical factor for increasing the local milk production is the limited availability of arable land because of the small size an ... | 2009 | 19620649 |
| "global" and "local" predictions of dairy diet nutritional quality using near infrared reflectance spectroscopy. | the objective of the study was to evaluate performance of classic (global) and innovative (local) calibration techniques to monitor cattle diet, based on fecal near infrared reflectance spectroscopy (nirs). a 3-yr on-farm survey (2005-2008) was carried out in vietnam and la reunion island to collect animal, feed intake, and feces excretion data. feed and feces were scanned by a foss nirsystem 5000 monochromator (foss, hillerød, denmark) to estimate diet characteristics and nutrient digestibility ... | 2010 | 20855031 |
| [health alert management and emerging risk]. | following health crisis that have occurred in the nineties (contaminated blood, mad cow, asbestos, etc.) and more recently those generated by the heat wave in 2003 or by emerging infectious pathogens (sars, west nile, chikungunya, h5n1, h1n1…), a real health vigilance system has been progressively developed in france. after a brief historical overview of the health alert system, this article will give the guiding principles of its current organization in france and will present two examples of r ... | 2010 | 21051258 |
| co-circulation of bluetongue and epizootic haemorrhagic disease viruses in cattle in reunion island. | bluetongue virus (btv) and epizootic haemorrhagic disease virus (ehdv) in deer have already been isolated in reunion island and have caused more or less severe clinical signs in cattle (ehdv) or in sheep (btv), as observed in 2003. in january 2009, cattle in reunion island showed clinical signs suggesting infection by one or the other of these arboviral diseases. a study was set up to determine the etiology of the disease. analysis by reverse transcriptase-polymerase chain reaction (rt-pcr) perf ... | 2011 | 22005178 |