Behavioral and endocrine correlates of dominance in captive female Jackson’s hartebeest (Alcelaphus buselaphus)

For species that form dominance hierarchies, such as group-living ungulates, aggressive interactions can pose a challenge to successful captive management. For example, Jackson’s hartebeest (Alcelaphus buselaphus), a rare antelope of east Africa, can be difficult to maintain in captivity because aggression within female dominance hierarchies can lead to injury and death. We quantified behavioral and […]

A 12-month survey of the gastro-intestinal helminths of antelopes, gazelles and giraffids kept at two zoos in Belgium

Faecal egg count patterns and clinical signs associated with gastro-intestinal (GI) nematodes of 107 zoo ruminants were monitored at fortnightly intervals for 1 year. The ruminants in this study were kept under different husbandry conditions at two sites of the Royal Zoological Society of Antwerp, the Antwerp Zoo and the Animal Park Planckendael. Artiodactylids involved […]

Effect of progestins on serum hormones, semen production, and agonistic behavior in the gerenuk (Litocranius walleri walleri)

Abstract 10.1002/zoo.20133.abs The use of progestins to suppress endogenous testosterone production to reduce agonistic behavior and prevent semen production was studied in gerenuk. Five male gerenuk (20 months to 3 years of age), housed as a bachelor group, were treated with 3 monthly injections of medroxyprogesterone acetate (MPA; 2.5–20 mg/kg), followed by a melengestrol acetate implant […]

Melengestrol acetate implant contraception in addax (Addax Nasomaculatus) and Arabian oryx (Oryx Leucoryx)

Abstract 10.1002/zoo.20146.abs Melengestrol acetate (MGA) implants were used for contraception in three addax and three Arabian oryx females housed at the Saint Louis Zoo. Serum estradiol and progesterone or fecal estrogen and progestin analysis and ultrasonography of reproductive tracts were used for monitoring changes before, during, and after MGA treatment. Follicular development and irregular uterine […]

Dominance hierarchy in a herd of female eland antelope (Taurotragus oryx) in captivity

Abstract 10.1002/zoo.20003.abs The dominance hierarchy of a group of adult female elands (n=10) kept in captivity was followed for 34 months. Outcomes of dominance relationships at the beginning and end of the study were compared. A clear dominance hierarchy existed in the herd. The dominance pattern was complex, but triads were predominantly (95%) transitive or […]

Aggression control in a bachelor herd of fringe-eared oryx (Oryx gazella callotis), with melengestrol acetate: Behavioral and endocrine observations

Abstract 10.1002/zoo.1036.abs Aggression control is becoming an important component in the management of animals in captivity, but rigorous quantification of aggressive behavior has heretofore been lacking. This study was done to assess the ability of melengestrol acetate (MGA) given with feed (1.54 mg/kg) to control aggression in a bachelor group of fringe-eared oryx (Oryx gazella […]

Crate conditioning of bongo (Tragelaphus eurycerus) for veterinary and husbandry procedures at the Denver Zoological Gardens

Abstract 10.1002/(SICI)1098-2361(1998)17:13.3.CO;2-N Crate conditioning of bongo (Tragelaphus eurycerus) at the Denver Zoological Gardens made it possible to perform veterinary and husbandry procedures without chemical or manual restraint. Procedures included blood sampling, injections, wound treatment, milk collection, and caudal tail fold tuberculin testing. Habituation and positive reinforcement techniques were used to accomplish conditioning. The methods used […]

Conditioning of nyala (Tragelaphus angasi) to blood sampling in a crate with positive reinforcement

Abstract 10.1002/zoo.1430140307.abs Habituation and positive reinforcement procedures were successfully used for low stress blood sampling of nyala (Tragelaphus angasi) at the Denver Zoological Gardens. Four adult females and three offspring were conditioned with a food reward voluntarily to enter a plywood crate for bimonthly blood sampling from the rear leg. Habituated and conditioned, nonsedated nyala […]

Nursing behavior and early development of impala at San Diego Wild Animal Park

Abstract 10.1002/zoo.1430100407.abs Because impala are commonly exhibited and handreared in zoos and their natural nursing behavior had not previously been studied, we examined nursing and early development in five impala calves housed in a large, naturalistic enclosure. Calves were observed for the first 5 weeks of life during 12-hr continuous watches and 20-min focal animal […]

Nonsurgical embryo transfer in the scimitar-horned oryx (Oryx dammah): Birth of a live offspring

Abstract 10.1002/zoo.1430100106.abs The objective of this project was to determine if modifications of methods of estrous synchronization, superovulation, embryo recovery, and transfer used successfully in other ungulates, both domestic and nondomestic, could be applied to scimitar-horned oryx (Oryx dammah). Donors were two parous females and recipients were one parous and two nulliparous females that were […]