Behavioral management of chimpanzees in biomedical research facilities: The state of the science

The current status of the behavioral management of chimpanzees housed in US research facilities is examined, and recent advances are described. Behavioral management includes the application of environmental enrichment, animal training, and environmental design for improving animal welfare. Authors surveyed the six major chimpanzee holding facilities and found that the vast majority of chimpanzees are […]

The welfare of non-human primates used in research: Report of the Scientific Committee on Animal Health and Animal Welfare


Serum testosterone in captive male rhinoceros: Effects of season, age, stress, and sociosexual environment

All rhinoceros species are in some degree of endangerment. Understanding the reproductive physiology of rhinoceros species will help in management decisions with both free-ranging and captive populations. In mammalian species studied, testosterone plays a key role in spermatogenesis and libido. Testosterone concentrations, depending on the species, may vary according to age, season, social status, stress […]

Captive breeding of the barndoor skate (Dipturus laevis) at the Montreal Biodome, with comparison notes on two other captive-bred skate species

Abstract 10.1002/zoo.20170.abs In 1997, the Montreal Biodome obtained five barndoor skates (Dipturus laevis) from the waters off Boston, Massachusetts. Six years later, those specimens began reproducing, and the first egg case was collected in November 2003. Since then, 73 hatchlings have been born and raised. Egg cases were observed year round, and annual fecundity was […]

Lens-anomalies and other ophthalmic findings in a group of closely-related angola lions (Panthera leo bleyenberghi)

Abstract 10.1002/zoo.20094.abs After the diagnosis of bilateral, immature, nuclear, and posterior cortical cataracts in one Angola lioness, and because of the possible implications of the cataracts for a breeding program, complete ophthalmic examinations on a group of related adult Angola lions and their offspring were carried out. Five adult lions, ranging in age from 1.5–5.5 […]

Reproductive status of endemic felid species in Latin American zoos and implications for ex situ conservation

Abstract 10.1002/zoo.10093.abs Reproductive evaluations were conducted on 185 male cats representing eight endemic Latin American species that were maintained in 44 zoos and private facilities in 12 Latin American countries. Reproductive assessments (testicular measures, ejaculate quality, and blood testosterone/cortisol concentration) were used to establish normative values for large- and small-sized cats in Latin American collections. […]

Reproductive inefficiency in male black-footed ferrets (Mustela nigripes)

Abstract 10.1002/1098-2361(2000)19:63.3.CO;2-M The black-footed ferret (Mustela nigripes), once considered extinct, has benefited from captive breeding and subsequent reintroduction into native habitat. A high proportion of females (>90%) exhibit estrus in captivity during the spring breeding season. However, many males considered to be prime-breeding age (1–3 years old) fail to sire offspring. Breeding records in 1995 […]

Influence of regional crossbreeding between rhesus macaques on the rate of weight gain of their offspring

Abstract 10.1002/zoo.1430130309.abs To evaluate potential heterosis resulting from breeding between rhesus macaques of Chinese and Indian origin in a captive social group, the rates of weight gain of Indian (nonhybrid) rhesus monkeys were compared with those of their hybrid (half Chinese/half Indian) peers. The coefficients for the linear regression of age on weight were estimated […]

The establishment and reproduction of a group of semifree-ranging mandrills

Abstract 10.1002/zoo.1430110605.abs Mandrills, Mandrillus sphinx, colorful terrestrial primates from the tropical forests of West Central Africa, are poorly known in the wild. The formation at the International Medical Research Center of Franceville, Gabon, of a semifreeranging, cohesive, reproducing group of mandrills in a highly naturalistic setting provided a unique resource for the study of this […]

Breeding for pleasure: the value of pleasure and pain in evolution and animal welfare

Farming and laboratory industries face questions about whether to breed animals with altered capacities for pleasure and pain. This paper addresses this issue from different approaches to animal welfare based on experiences, fitness and naturalness. This can illuminate both the breeding-related issues and the different approaches themselves. These differences have practical implications for decisions about […]