动物营养学报 >

2017 , Vol. 29 >Issue 11: 4093 - 4100

DOI: https://doi.org/10.3969/j.issn.1006-267x.2017.11.031

研究简报 Short Communications

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

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  • 中国农业科学院特产研究所, 吉林省特种经济动物分子生物学省部共建重点实验室, 长春 130112
张海华(1983-),女,河北承德人,博士研究生,从事特种动物营养与分子营养研究。E-mail:zhh83@126.com

收稿日期: 2017-05-17

  网络出版日期: 2017-10-31

基金资助

中国农业科学院科技创新工程专项经费（CAAS-ASTIP-2017-ISAPS）

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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

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  • State Key Laboratory of Special Economic Animal Molecular Biology, Institute of Economic Animal and Plant Science, Chinese Academy of Agriculture Sciences, Changchun 130112, China

Received date: 2017-05-17

  Online published: 2017-10-31

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摘要

本试验旨在研究饲粮粗蛋白质（CP）和粗脂肪（EE）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，以明确冬毛期水貂饲粮CP和EE的适宜水平。试验采用2×3因子试验设计，即2个CP水平（32%和36%）和3个EE水平（10%、20%和30%），共配制6种试验饲粮。选取84只（120±5）日龄健康雄性水貂，随机分成6组，每组14个重复，每个重复1只。预试期7 d，正试期85 d。结果表明：32% CP组水貂平均日增重（ADG）、蛋白质消化率、脂肪消化率、碳水化合物消化率及氮代谢各指标均显著或极显著低于36% CP组（P<0.05或P<0.01）。30% EE组水貂末重、ADG和氮沉积含量显著或极显著高于10% EE组（P<0.05或P<0.01）；30% EE组水貂平均日采食量、料重比、干物质消化率、蛋白质消化率、碳水化合物消化率、食入氮含量和粪氮排出量显著或极显著低于10% EE组（P<0.05或P<0.01）。饲粮CP和EE水平对水貂脂肪消化率有显著交互作用（P<0.05）。综合以上指标，在本试验条件下，饲粮CP水平为36%、EE水平为20%或30%时，冬毛期水貂可获得较佳的生长性能，且能够提高水貂对蛋白质的利用率。

关键词： 雄性水貂; 蛋白质; 脂肪; 冬毛期

本文引用格式

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 . DOI: 10.3969/j.issn.1006-267x.2017.11.031

Abstract

This experiment was conducted to investigate the effects of dietary crude protein (CP) and ether extract (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 digestibility 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 intake, ratio of feed to gain, dry matter digestibility, protein digestibility, carbohydrate digestibility, nitrogen intake 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.

Key words： male minks; protein; fat; winter fur-growing period

参考文献

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