Nutritional and behavioral effects of gorge and fast feeding in captive lions

Nonhuman animals in captivity manifest behaviors and physiological conditions that are not common in the wild. Lions in captivity face problems of obesity, inactivity, and stereotypy. To mediate common problems of captive lions, this study implemented a gorge and fast feeding schedule that better models naturalistic patterns: African lions (Panthera leo) gradually adapted from a […]

Energy and mineral nutrition and water intake in the captive Indian rhinoceros (Rhinoceros unicornis)

Abstract 10.1002/zoo.20032.abs In the captive Indian rhinoceros (Rhinoceros unicornis), two disease complexes with a high incidence—chronic foot problems and uterine leiomyomas—may be linked to excess body weight (BW). In this study, intake and digestion trials were conducted (by means of 7-day weigh-backs, and 5-day total fecal collections, respectively) with 11 Indian rhinoceroses at four zoological […]

Body weights of ruffed lemurs (Varecia variegata) in European zoos with reference to the problem of obesity

Abstract 10.1002/zoo.1026.abs Qualitative observations in several European zoos revealed a high proportion of obese individuals in different species of lemurs. This phenomenon was examined in both subspecies of the ruffed lemur (Varecia variegata variegata and Varecia variegata rubra). Data on body weight were obtained from 43 animals in 13 European zoos and were compared with […]

‘Freedom from hunger’ and preventing obesity: the animal welfare implications of reducing food quantity or quality

In animals, including humans, free access to high-quality (generally energy-dense) food can result in obesity, leading to physiological and health problems. Consequently, various captive animals, including laboratory and companion animals and certain farm animals, are often kept on a restricted diet. Quantitative restriction of food is associated with signs of hunger such as increases in […]

The gross anatomy, cellular structure, and fatty acid composition of adipose tissue in captive polar bears (Ursus maritimus)

Abstract 10.1002/zoo.1430120304.abs The gross anatomy, microscopic structure, and fatty acid composition of adipose tissue in four elderly polar bears (Ursus maritimus), that had each been in captivity for more than 24 years, were compared with that of young wild specimens. Total dissections were performed on two specimens. In both, the proportion of adipose tissue in […]

The feeding of rhinoceros in captivity

Rhinoceros are large herbivores that are adapted for gaining energy from the fermentation of fibrous plant material. In this paper we address issues of oversupplementation of energy (leading to obesity) and minerals (particularly iron in Black rhinoceros Diceros bicornis), outline a diet design that relies on forage as the staple component with a reduction in […]

Chronic stress, energy balance and adiposity in female rats

Stress preferentially increases the consumption of high fat foods in women, suggesting the interaction of these two factors may disproportionately predispose women toward excess weight gain. In the present study, female rats were exposed to a chronic high fat or chow diet and were exposed to 4 weeks of chronic variable stress (CVS) or served […]

Effects of stress on dietary preference and intake are dependent on access and stress sensitivity

Recent studies support a link between stress and the increased consumption of palatable foods. However, there has been a noted lack of genetic models to examine predisposing factors of overweight, obesity, and binge eating, particularly the role that stress sensitivity might play in the development of these conditions. We have examined the effects of chronic […]

Effects of aviary and box sizes on body mass and behaviour of domesticated budgerigars (Melopsittacus undulatus)

Forty-eight budgerigars (Melopsittacus undulatus) were pairwise housed in small (80 × 40 × 50 cm) and large (160 × 40 × 50 cm) (length × breadth × height) boxes, as well as in 2.0 × 1.0 × 2.0 m aviaries. All boxes and aviaries had two or three (aviaries) perches and food was offered on […]

Sleep and Obesity: A Focus on Animal Models

The rapid rise in obesity prevalence in the modern world parallels a significant reduction in restorative sleep (Agras et al., 2004; Dixon et al., 2007, 2001; Gangwisch and Heymsfield, 2004; Gupta et al., 2002; Sekine et al., 2002; Vioque et al., 2000; Wolk et al., 2003). Reduced sleep time and quality increases the risk for […]