Effects of chronic melengestrol acetate contraceptive treatment on perineal tumescence, body weight, and sociosexual behavior of hamadryas baboons (Papio hamadryas)
Abstract 10.1002/zoo.1430140306.abs Melengestrol acetate (MGA) subcutaneous implants were used in seven adult female Hamadryas baboons to study the effects of chronic progestin administration on perineal swelling, behavior, and weight gain. At the dose level used (≥8 mg/kg body weight), cycles of perineal tumescence ceased and swellings subsided. Social dynamics were not significantly altered during treatment, […]
The effect of diet and feeding level on survival and weight gain of hand-raised harbor seal pups (Phoca vitulina)
Hundreds of stranded harbor seals pups (Phoca vitulina) are brought to wildlife rescue centers every year. Typical hand-rearing diets include artificial milk-replacers and diets based on macerated fish fed via gavage, but weight gains are often low and mortality rates can be high. This study compared survival and weight gain of orphaned seal pups fed […]
Prolactin, Psychological Stress and Environment in Humans- Adaptation and Maladaptation
Non-puerperal lactation and/or hyperprolactinemia in humans have been related to psychological variables in a variety of ways: (1) Non-puerperal nursing; (2) Pseudopregnancy; (3) Rapid weight gain; (4) Psychogenic galactorrhea; (5) Acute prolactin responses to psychological stress; (6) High prolactin levels in persons who cope passively in real life stress situations; (7) Paternal deprivation in women […]
Hand-rearing and sex determination tool for the taveta golden weaver (Ploceus castaneiceps)
Improvements in the ability to hand-rear birds in captivity have aided zoological institutions in the sustainable management of these species, and have provided opportunities to examine their physical growth in varying conditions. Monitoring the weight gain and development of chicks is an important aspect of developing a hand-rearing protocol. In this paper we provide the […]
A Survey of Diabetes Prevalence in Zoo-housed Primates
In humans, type II diabetes mellitus is a condition in which the pancreas is capable of producing insulin but cells do not appropriately respond to insulin with an uptake of glucose. While multiple factors are associated with type II diabetes in humans, a high calorie diet and limited exercise are significant risk factors for the […]
Comparison of the effects of weaning and castration when conducted separately or in combination on the behaviour of crossbred beef cattle
The objective of the present study was to evaluate the behavioural effects of Burdizzo castration of crossbred beef calves when weaned and castrated separately (castrated 8 weeks after weaning) or in combination. Over two consecutive years a total of 111 Limousin × Simmental male calves were included in the study. At an age of 7 […]
Associations between milk intake and activity in the first days of a calf’s life and later growth and health
We examined whether calves’ milk intake and activity in the days after birth predict later growth and the risk of illness. Female Holstein calves (n = 130) were housed in individual pens where they were allowed ad libitum milk from birth to 5 days of age. Daily milk intakes were recorded and accelerometers attached to […]
The weight of Rothschild giraffe—Is it really well known?
Despite being regularly bred in zoos, giraffes remain a challenge, especially in terms of feeding. Assessment of factors influencing growth and weight changes during ontogeny, as well as analysis of weight fluctuations in adult individuals, may become a critical point in captive diet evaluation. Knowledge about weight is a crucial husbandry tool; however, such data […]