动物营养学报 >

2013 , Vol. 25 >Issue 8: 1817 - 1824

DOI: https://doi.org/10.3969/j.issn.1006-267x.2013.08.019

特种经济动物营养 Special Economic Animal Nutrition

饲粮锌添加水平对繁殖期雄性水貂繁殖性能、营养物质消化率及氮代谢的影响

  • 吴学壮 ,
  • 张铁涛 ,
  • 杨颖 ,
  • 刘志 ,
  • 高秀华 ,
  • 杨福合 ,
  • 邢秀梅
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  • 1. 中国农业科学院饲料研究所,北京 100081;
    2. 吉林省特种经济动物分子生物学省部共建实验室, 长春 130112;
    3. 中国农业科学院特产研究所,长春 130112

收稿日期: 2013-02-01

  网络出版日期: 2013-07-15

基金资助

公益性行业(农业)科研专项(200903014)

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Effects of Dietary Zinc Supplemental Level on Reproductive Performance, Nutrient Digestibility and Nitrogen Metabolism of Reproducing Male Minks

  • WU Xuezhuang ,
  • ZHANG Tietao ,
  • YANG Ying ,
  • LIU Zhi ,
  • GAO Xiuhua ,
  • YANG Fuhe ,
  • XING Xiumei
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  • 1. Institute of Feed Research, Chinese Academy of Agricultural Science, Beijing, 100081, China;
    2. State Key Laboratory of Special Economic Animal Molecular Biology, Changchun 130112, China;
    3. Institute of Economic Animal and Plant Science, Chinese Academy of Agricultural Science, Changchun 130112, China

Received date: 2013-02-01

  Online published: 2013-07-15

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摘要

本试验旨在研究饲粮锌添加水平对繁殖期雄性水貂繁殖性能、营养物质消化率及氮代谢的影响.选择健康后备种雄性水貂60只,随机分成5组,每组12个重复,每个重复1只貂.各组水貂分别饲喂锌添加水平为0(Ⅰ组)、50(Ⅱ组)、100(Ⅲ组)、200(Ⅳ组)、400 mg/kg(Ⅴ组)的试验饲粮.预试期7 d,正试期120 d.结果表明:1)Ⅰ组精子活力极显著低于Ⅱ组和Ⅲ组(P<0.01),显著低于Ⅴ组(P<0.05);Ⅰ组睾丸直径极显著小于Ⅱ组(P<0.01),显著小于Ⅲ组(P<0.05);Ⅰ组公貂成功配种次数极显著小于Ⅲ组(P<0.01),显著小于Ⅱ组和Ⅳ组(P<0.05).2)各组干物质采食量、脂肪消化率差异不显著(P>0.05);Ⅲ组干物质排出量显著高于Ⅰ组(P<0.05);Ⅱ组干物质消化率极显著高于Ⅴ组(P<0.01),显著高于Ⅳ组(P<0.05);Ⅱ组和Ⅲ组蛋白质消化率显著高于Ⅴ组(P<0.05).3)各组食入氮、尿氮、氮沉积、净蛋白质利用率、蛋白质生物学价值均差异不显著(P>0.05).由此可见,饲粮锌添加水平为50~100 mg/kg(总锌水平140~190 mg/kg)时,水貂的繁殖性能较为理想.饲粮锌添加水平为100 mg/kg(总锌水平190 mg/kg)时,水貂的干物质采食量较高.饲粮锌添加水平对水貂的干物质采食量、脂肪消化率、氮沉积、净蛋白质利用率及蛋白质生物学价值影响不显著.

关键词： 锌; 饲粮; 水貂; 繁殖性能; 消化率

本文引用格式

吴学壮 , 张铁涛 , 杨颖 , 刘志 , 高秀华 , 杨福合 , 邢秀梅 . 饲粮锌添加水平对繁殖期雄性水貂繁殖性能、营养物质消化率及氮代谢的影响[J]. 动物营养学报, 2013 , 25(8) : 1817 -1824 . DOI: 10.3969/j.issn.1006-267x.2013.08.019

Abstract

This experiment was conducted to study the effects of dietary zinc supplemental level on reproductive performance, nutrient digestibility and nitrogen metabolism of reproducing male minks. Sixty healthy male minks were randomly divided into 5 groups with 12 replicates per group and 1 mink per replicate. The minks in the 5 groups were fed experimental diets with zinc supplemental levels of 0 (group Ⅰ), 50 (group Ⅱ), 100 (group Ⅲ), 200 (group Ⅳ) and 400 mg/kg (group Ⅴ), respectively. The pre-test period lasted for 7 days and the trial period lasted for 120 days. The results showed as follows: 1) the sperm motility in group Ⅰ was significantly lower than that in groups Ⅱ and Ⅲ (P<0.01), and was significantly lower than that in group Ⅴ (P<0.05). The testicular diameter in group Ⅰ was significantly smaller than that in groups Ⅱ (P<0.01) and Ⅲ (P<0.05). The successful mating times on male mink in group Ⅰ was significantly lower than that in group Ⅲ (P<0.01), and was significantly lower than that in groups Ⅱ and Ⅳ (P<0.05). 2) There were no significant differences in the dry matter (DM) intake and fat digestibility among all groups (P>0.05). The DM output in group Ⅲ was significantly higher than that in group Ⅰ (P<0.05); the DM digestibility in group Ⅱ was significantly higher than that in group Ⅴ (P<0.01), and was significantly higher than that in group Ⅳ (P<0.05); the protein digestibility in groups Ⅱ and Ⅲ was significantly higher than that in group Ⅴ (P<0.05). 3) There were no significant differences in the nitrogen intake, urine nitrogen, nitrogen deposition, net protein utilization and biological value of protein among all groups (P>0.05). In conclusion, when the zinc supplemental level arrives at 50 to 100 mg/kg (total zinc level is 140 to 190 mg/kg), the reproductive performance of minks is more ideal. When the zinc supplemental level arrives at 100 mg/kg (total zinc level is 190 mg/kg), the DM intake of minks is higher. Dietary zinc supplemental level has no effect on DM intake, fat digestibility, nitrogen deposition, net protein utilization and biological value of protein in minks.

Key words： zinc; diet; mink; reproductive performance; digestibility

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