Canine coprophagic behavior is influenced by coprophagic cohabitant

Coprophagia is a common canine habit, although it is aversive for human beings. Despite absence of clinical risk to animals and their owners, this behavior may lead the owners to get rid of their dogs. The lack of information and effective corrective methods make it difficult for veterinary clinicians to contribute to eradication of this […]

Use of fecal glucocorticoid metabolite measures in conservation biology research: considerations for application and interpretation

Fecal glucocorticoid metabolite analyses are increasingly being used by a variety of scientists (e.g., conservation biologists, animal scientists) to examine glucocorticoid (i.e., stress hormone) secretion in domestic and wild vertebrates. Adrenocortical activity (i.e., stress response) is of interest to conservation biologists because stress can alter animal behavior, reduce resistance to disease, and affect population performance. […]

An investigation of the relationship between fecal and rumen bacterial concentrations in sheep

Abstract 10.1002/zoo.20166.abs With no acceptable method for collecting fresh rumen fluid from zoo ruminants, it was proposed that fecal bacterial concentrations may be correlated with rumen bacteria. If so, fecal bacterial concentrations could be used to study both the effects of diet on rumen bacteria as well as rumen abnormalities. Total and cellulolytic bacterial concentrations […]

Assessment of testicular endocrine function in captive African elephants by measurement of urinary and fecal androgens

Abstract 10.1002/zoo.10034.abs Androgen measurements in urine and/or feces represent a potentially important tool for monitoring testicular endocrine function in the African elephant. To assess the feasibility of this approach, the aims of the present study were to: 1) examine the presence and relative abundance of immunoreactive testosterone (iT) and its 5α-reduced 17-oxometabolite epiandrosterone (iEA) in […]

Reproductive endocrine patterns in captive female and male red wolves (Canis rufus) assessed by fecal and serum hormone analysis

Abstract Reproductive steroid profiles in female (n=13) and male (n=5) red wolves (Canis rufus) were characterized in fecal samples collected during the breeding season (December—May) and over a 1 year period, respectively. Blood samples from females (n=12) also were collected during the periovulatory period for luteinizing hormone (LH) and steroid analysis. High performance liquid chromatography […]

Characterization of reproductive cycles and adrenal activity in the black-footed ferret (Mustela nigripes) by fecal hormone analysis

Abstract 10.1002/zoo.10001.abs The reproductive cycle of the black-footed ferret (Mustela nigripes) was characterized by enzyme immunoassay (EIA) analysis of ovarian fecal steroids (estradiol, progestins) in 29 females over two consecutive breeding seasons. Estrous status was determined by measuring the vulva size and examining the percentage of superficial cells in vaginal lavages. Mean fecal estradiol concentrations […]

Fecal androgen metabolite analysis for noninvasive monitoring of testicular steroidogenic activity in felids

Limited data are available on long-term, seasonal changes in testicular steroidogenic activity in nondomestic felids, primarily because of the difficulties associated with longitudinal blood sampling (e.g., handling, restraint, anesthesia). Therefore, a noninvasive approach for assessing testicular androgen production was developed using the domestic cat (Felis catus) as a model. Two adult males were injected i.m. […]

Cortisol metabolism in the domestic cat and implications for non-invasive monitoring of adrenocortical function in endangered felids

Abstract 10.1002/(SICI)1098-2361(1996)15:13.3.CO;2-Q Three domestic cats were given i.m. injections of 3H-cortisol to determine the time course and relative proportion of excreted 3H-cortisol metabolites into urine and feces. Most urinary radioactivity was detected in the first sample collected at 3.9 ± 2.5 hr postinjection and accounted for 13.9 ± 2.1% of the total radioactivity recovered. High […]

Effect of a cage divider permitting social stimuli on stress and food intake in rats

The need to obtain data from individual laboratory animals has forced many researchers to singly-house small animals. This is costly to the researcher and isolation can adversely affect animal physiology and behavior which in turn may threaten the validity and generalization of experiment results to humans. We assessed the practical use of a housing device […]

Olfactory predator recognition in predator-naïve gray mouse lemurs (Microcebus murinus)

Olfactory cues of predators, such as feces, are known to elicit antipredator responses in animals (e.g., avoidance, activity). To date, however, there is little information on olfactory predator recognition in primates. We tested whether the odor of feces of different predator categories (historical Malagasy predators and introduced predators) and of Malagasy nonpredators (control) induces antipredator […]