Comparative Nutrient Digestibility in Blue Foxes (Alopex lagopus) and Mink (Mustela vison) Fed Diets with Diverging Fat: Carbohydrate Ratios
作者:
Øystein Ahlstrom,
Anders Skrede,
期刊:
Acta Agriculturae Scandinavica, Section A — Animal Science
(Taylor Available online 1995)
卷期:
Volume 45,
issue 1
页码: 74-80
ISSN:0906-4702
年代: 1995
DOI:10.1080/09064709509410916
出版商: Taylor & Francis Group
关键词: amino acids;digestion;energy;fur animals
数据来源: Taylor
摘要:
Nutrient digestibilities were evaluated in comparative experiments with blue foxes and mink by using six diets differing in fat:carbohydrate (F:C) ratios. In mink, apparent digestibilities of N and amino acids decreased with decreasing F:C ratio. N digestibility, and most amino acid digestibilities, were higher in blue foxes than in mink (P< 0.01). Fat digestibility in mink, but not in blue foxes, declined as the F:C ratio decreased (P< 0.05). Fat digestibility was higher in blue foxes than in mink (P< 0.05). Carbohydrate digestibility was not affected by the F:C ratio, but high levels of carbohydrates were digested more completely by foxes than by mink. The use of mink digestibility values in feed evaluations for blue foxes will consequently underestimate digestibility. Thus, to evaluate feed correctly, separate digestibility determinations should be made for mink and foxes.
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