| hand-rearing baboons for laboratory investigations. | to conduct laboratory studies in unsedated animals that were similar anatomically and physiologically to man, five full term baboons (four papio cynocephalus anubis, one papio cynocephalus cynocephalus) were hand-reared. these infants were used as unsedated animal models in short-term lung clearance studies conducted from birth to 2 years of age. the hand-rearing techniques described here encouraged the formation of an infant-human rearer bond that permitted us to control the level of expressed ... | 1986 | 3821060 |
| amino acid composition of the milk of some mammalian species changes with stage of lactation. | to determine whether the amino acid composition of milk changes during lactation, we compared the amino acid pattern (concentration of each individual amino acid relative to the total amino acid concentration) of colostrum with that of mature milk in six mammalian species. in the human, horse, pig and cow, the pattern of amino acids changed between colostrum and mature milk: glutamate, proline, methionine, isoleucine and lysine increased; cystine, glycine, serine, threonine and alanine decreased ... | 1994 | 7827005 |
| peri-portal fibrosis of the liver due to natural or experimental infection with schistosoma mansoni occurs in the kenyan baboon. | the chronic granulomatous inflammation that occurs during schistosomiasis mansoni and its reparative healing lead to hepatic fibrosis, with subsequent portal hypertension (a life-threatening sequela). in the murine model, granuloma modulation invariably leads to formation of fibrous tissue and disposition of extracellular matrix. typically, < 10% of patients infected with schistosoma mansoni progress to clay-pipe-stem fibrosis. similar fibrosis occurs in chimpanzees during experimental infection ... | 1998 | 9625915 |
| dispersal in sub-saharan baboons. | in most mammalian species, males tend to leave their natal group and disperse farther than females, while females tend to be philopatric. primates generally follow this rule, although long-term studies of a variety of species are revealing an increasing number of exceptions. this paper reviews dispersal patterns in 3 subspecies of savanna baboons (papio cynocephalus cynocephalus, p. cynocephalus anubis, p. cynocephalus ursinus) which exhibit very similar patterns of social organization. males us ... | 2005 | 1307076 |
| spontaneous fatal coccidioidomycosis in a native-born hybrid baboon (papio cynocephalus anubis/papio cynocephalus cynocephalus). | | 1991 | 1666160 |
| information content of female copulation calls in yellow baboons. | in a wide variety of animal species, females produce vocalizations just before, during, or immediately after copulation. observational and experimental evidence indicates that these copulation calls are sexually selected traits, functioning to promote competition between males for access to the calling female. in this paper, we present an acoustic analysis of variation in the form of copulation calls of female yellow baboons, papio cynocephalus cynocephalus. in particular, we examine whether inf ... | 2002 | 11793412 |
| analysis of infant handling and the effects of female rank among tana river adult female yellow baboons (papio cynocephalus cynocephalus) using permutation/randomization tests. | infant handling has been documented in numerous species. among cercopithecines, interaction motivations are reported to range from aunting to kidnapping; these interactions are often distressful for both mother and infant. here we examine handling by adult female yellow baboons (papio cynocephalus cynocephalus) at the tana river national primate reserve, kenya, using a relatively new, computer-intensive statistical approach of permutation/randomization tests to deal with repeated measures effect ... | 2001 | 11668529 |
| sun avoidance in the yellow baboons (papio cynocephalus cynocephalus) of ruaha national park, tanzania. variations with season, behavior and weather. | do free-ranging baboons avoid traveling towards the sun? sun avoidance, in addition to resource and predator locations, may influence troop movement and non-random use of the home range. this paper investigates how sun avoidance, as measured by facial exposure to sunlight, influences directional choices. it hypothesizes that baboons should avoid the sun in the hot, dry season and show indifference to it in the cool, lush season. this paper also hypothesizes that baboons employ sun-avoidance beha ... | 2000 | 11049003 |
| excretion rates and metabolites of oestradiol and progesterone in baboon (papio cynocephalus cynocephalus) faeces. | two unanaesthetized female yellow baboons (papio cynocephalus cynocephalus) were infused (i.v.) with [3h]oestradiol and two with [3h]progesterone, early in the follicular phases of their cycles. one month later, the two females infused with [3h]oestradiol were simultaneously infused with [14c]progesterone and [3h]dehydroepiandrosterone. all urine and faeces were collected for 96 h after infusion. the proportion of steroid excreted in faeces (versus urine) was 10.0% for oestradiol and 40% for pro ... | 1994 | 8064684 |
| effects of dietary fibre on faecal steroid measurements in baboons (papio cynocephalus cynocephalus). | a study was conducted in captive baboons to determine (i) the impact of cereal dietary fibre on faecal progestogen excretion, and (ii) whether means of controlling dietary effects could be identified. blood was collected on 3 days per week and faeces on 5 days per week from four unanesthetized cyclic female baboons, consecutively fed three diets of 5, 10 and 20% fibre for 90 days per diet. a 2 day lag time was detected before progesterone in the blood appeared in the faeces, regardless of diet ( ... | 1993 | 8388960 |
| rapid extraction of faecal steroids for measuring reproductive cyclicity and early pregnancy in free-ranging yellow baboons (papio cynocephalus cynocephalus). | a rapid method was developed for extracting and assaying oestradiol and progesterone in faeces (n = 242) of female yellow baboons, free-living in tanzania. dose response studies generated slopes of 1.02 (r2 = 0.99) for oestradiol and 1.09 (r2 = 0.99) for progesterone, suggesting that this method accurately measured these steroids in faeces. parallelism was proved by demonstrating that slopes produced from serially diluted samples were not different from those generated from standard curves (mean ... | 1991 | 1886098 |
| immunochemical analysis of baboon (papio cynocephalus) igg subclasses. | few reports are presently available on the existence of igg subclasses in nonhuman primates. papain and trypsin digestion of baboon (papio cynocephalus cynocephalus and p. cynocephalus hamadryas) igg proteins, in the absence of cysteine, revealed the occurrence of two different protein populations, one being protease-resistant, the other being protease-sensitive. the papain-resistant population is rendered sensitive to digestion upon addition of cysteine. ion exchange chromatography of the papai ... | 1987 | 3124330 |
| vitamin b12 nutrition and metabolism in the baboon (papio cynocephalus). | 1. measurement of the vitamin b12 content of baboon tissues showed that the liver contained the highest concentration, followed by the pituitary, kidney, heart, spleen and pancreas. 2. the dietary vitamin b12 requirement of the baboon for the maintenance of satisfactory body stores was between 1 and 2 mug/d. 3. satisfactory liver vitamin b12 stores were invariably associated with serum levels above 125 pg/ml, whereas liver levels were usually low when the serum level was below 50 pg/ml. 4. incre ... | 1975 | 1125171 |