Abstract
Content and apparent ileal digestibility of nutrients in diets fed to breeding polar foxes over the non-mating season
Highlights
The failures in reproduction of polar fox observed over 10-15 years in Poland were ascribed mainly to viral, bacterial and pathogenic infections (Mizak et al, 1998; Śmielewska-Łoś et al, 1999)
Diets were supplemented with vitamin-mineral mixtures that met the requirements of reproductive foxes over the non-mating period for vitamins and microelements (NRC, 1982; Jarosz, 1994)
Metabolizable energy, cal g-1,2 1300 digestibility results expressed as mean ± SD; 2 calculated; 3 not significant
Summary
The failures in reproduction of polar fox observed over 10-15 years in Poland were ascribed mainly to viral, bacterial and pathogenic infections (Mizak et al, 1998; Śmielewska-Łoś et al, 1999). A comprehensive explanation of these disorders lacks evaluation of the quality of nutrition. The objective of the study was to compare the contents of total and ileal digestible nutrients in diets fed during the non-mating season on two farms differing widely in reproductive performance in the preceding breeding cycle.
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