动物营养学报2017，Vol.29Issue(11)：4093-4100,8.DOI:10.3969/j.issn.1006-267x.2017.11.031
饲粮粗蛋白质和粗脂肪水平对冬毛期雄性水貂生长性能、营养物质消化率及氮代谢的影响
Effects of Dietary Crude Protein and Ether Extract Levels on Growth Performance, Nutrient Digestibility and Nitrogen Metabolism of Male Minks during Winter Fur-Growing Period
摘要
Abstract
This experiment was conducted to investigate the effects of dietary crude protein ( CP) and ether ex-tract ( EE) levels on growth performance, nutrient digestibility and nitrogen metabolism of male minks during winter fur-growing period, in order to determine the optimum dietary CP and EE levels of male minks during winter fur-growing period. A 2×3 factorial design was adopted in this test, six experimental diets were prepared with two CP levels ( 32% and 36%) and three EE levels ( 10%, 20% and 30%) . Eighty-four healthy male minks at (120±5) days of age were randomly assigned into 6 groups with 14 replicates per group and 1 mink per replicate. The adaptation period lasted for 7 days and the formal period lasted for 85 days. The results showed as follows:the average daily gain ( ADG) , protein digestibility, fat digestibility, carbohydrate digesti-bility and nitrogen metabolism indices of minks in 32% CP group were significantly lower than those in 36%CP group ( P<0.05 or P<0.01) . The final weight, ADG and nitrogen deposition content of minks in 30% EE group were significantly higher than those in 10% EE group ( P<0.05 or P<0.01) , the average daily feed in-take, ratio of feed to gain, dry matter digestibility, protein digestibility, carbohydrate digestibility, nitrogen in-take content and fecal nitrogen output of minks in 30% EE group were significantly lower than those in 10%EE group (P<0.05 or P<0.01). Dietary CP and EE levels had significant interaction on fat digestibility of minks ( P<0.05) . Considering all the factors, when dietary CP level is 36%, EE level is 20% or 30% under the condition of this experiment, the male minks during winter fur-growing period can get the better growth performance, and can improve protein utilization of minks.关键词
雄性水貂/蛋白质/脂肪/冬毛期Key words
male minks/protein/fat/winter fur-growing period分类
农业科技引用本文复制引用
张海华,南韦肖,王卓,李光玉..饲粮粗蛋白质和粗脂肪水平对冬毛期雄性水貂生长性能、营养物质消化率及氮代谢的影响[J].动物营养学报,2017,29(11):4093-4100,8.基金项目
中国农业科学院科技创新工程专项经费(CAAS-ASTIP-2017-ISAPS) （CAAS-ASTIP-2017-ISAPS）
