Energy and nutrient assimilation by gray foxes on diets of mice and Himalaya berries
Article Abstract:
The energy and nutrient balance of gray foxes (Urocyon cinereoargenteus) fed a diet exclusively of Himalaya berries were compared to foxes fed a diet exclusively of laboratory mice (Mus musculus). Foxes on the berry diet are in a negative energy and protein balance, thereby experiencing weight loss. Digestible crude fat and protein are greater for diets composed of mice than of berries. The high-protein content in the diet of mouse-fed foxes enables them to cope with short-term food shortage. Foxes on a frugivorous diet need other sources of animal protein to meet its energy and nutrient requirements.
Publication Name: Journal of Mammalogy
Subject: Zoology and wildlife conservation
ISSN: 0022-2372
Year: 1992
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Change in nutrient content of foods stored by eastern woodrats (Neotoma floridana)
Article Abstract:
Eastern woodrats (Neotoma floridana) store a variety of plants like dogwood fruits (Cornus drummondii), redbud seed (Cercis canadensis) and green ash fruits (Fraxinus pennsylvanica). The nutritional value of some cache foods change during storage. The combined effect of oxidation and hydrolysis is responsible for a great reduction in lipid content of dogwood fruit. There are small changes in protein, crude fiber and carbohydrate contents of the cache foods. Woodrats, with limited caches of food, are likely to be negatively affected by the decline in energy value of stored food.
Publication Name: Journal of Mammalogy
Subject: Zoology and wildlife conservation
ISSN: 0022-2372
Year: 1992
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Maternal response to resource limitations in eastern woodrats
Article Abstract:
The study on eastern woodrats, Neotoma floridana, shows no sign of sex-biased maternal investment in response to nutritional stress for this species despite a strong effect on growth rates of offspring from nutritionally controlled litters compared with those from control groups. Stressed dams can rear a single young with slight or no decrease in growth rates of the young compared with those of unstressed dams by mobilizing body reserves but growth rates are reduced from larger litters.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1995
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