反刍与草食动物营养 Ruminant and herbivore nutrition

瘤胃保护型亮氨酸对滩羊母羊繁殖性能、消化性能及初乳品质的影响

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  • 1. 宁夏大学动物科学系, 银川 750021;
    2. 红寺堡区天源良种羊繁育养殖有限公司, 吴忠 751900;
    3. 宁夏回族自治区畜牧工作站, 银川 750001
张桂杰(1983-),男,山东德州人,副教授,博士,主要从事动物营养与饲料科学研究。E-mail:Guijiezhang@126.com

收稿日期: 2017-08-07

  网络出版日期: 2017-12-04

基金资助

国家自然科学基金"滩羊妊娠期日粮亮氨酸水平对子代骨骼肌蛋白质合成的调控机制"(31360556)

Effects of Rumen Protected Leucine on Reproductive Performance, Digestion Performance and Colostrums Quality of Ewes of Tan Sheep

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  • 1. Departments of Animal Science, Ningxia University, Yinchuan 750021, China;
    2. Hongsipu District Tianyuan Well-Bred Sheep Breeding Co., Ltd., Wuzhong 751900, China;
    3. Ningxia Hui Autonomous Region Husbandry Workstation, Yinchuan 750001, China

Received date: 2017-08-07

  Online published: 2017-12-04

摘要

本试验旨在探讨瘤胃保护型亮氨酸(RP-Leu)对滩羊母羊繁殖性能、消化性能及初乳品质的影响。选取体重为(42.18±2.62)kg的经产滩羊母羊48只,随机分为4组,每组3个重复,每个重复4只。对照组饲喂基础饲粮,试验组在对照组基础上分别添加0.10%、0.20%和0.30%的RP-Leu。试验期为妊娠后第35天始至分娩后第60天(断奶)结束。结果表明:与对照组相比,妊娠期母羊饲粮添加0.20% RP-Leu显著提高了羔羊初生重和断奶重(P<0.05),显著提高了妊娠期母羊粗蛋白质的表观消化率(P<0.05),显著提高了初乳中乳脂、乳蛋白和乳糖含量(P<0.05),同时显著降低了母羊分娩后第15天血清尿素氮含量(P<0.05)。综上所述,饲粮中添加0.20% RP-Leu能够改善妊娠滩羊氮沉积和初乳品质,同时实现促进羔羊生长发育的目的。

本文引用格式

张桂杰, 寇启芳, 牛文志, 曹思怡 . 瘤胃保护型亮氨酸对滩羊母羊繁殖性能、消化性能及初乳品质的影响[J]. 动物营养学报, 2017 , 29(12) : 4349 -4354 . DOI: 10.3969/j.issn.1006-267x.2017.12.015

Abstract

The objective of the present experiment was to determine the effects of rumen protected leucine (RP-Leu) on reproductive performance, digestion performance and colostrums quality of ewes of Tan sheep. Forty-eight multiparity ewes of Tan sheep with an average body weight of (42.18±2.62) kg were randomly assigned into 4 groups (3 replicates per group, and 4 ewes per replicate). Control group used a basal diet, and experimental groups were supplemented 0, 0.10%, 0.20% and 0.30% RP-Leu based on control group, respectively. The trial began at 35 d after conception and ended at 60 d (weaning) after parturition. The results showed as follows:compared with control group, the supplementation of 0.20% RP-Leu in diet for pregnant ewes significantly increased birth weight and weaner weight of their lambs (P<0.05), significantly increased the apparent digestibility of crude protein of pregnant ewes of Tan sheep (P<0.05), significantly increased the contents of milk fat, milk protein and lactose of colostrums (P<0.05), and significantly decreased the content of serum urea nitrogen of ewes at 15 d after parturition (P<0.05). In conclusion, dietary supplementation of RP-Leu can improve nitrogen deposition and colostrums quality of ewes of Tan sheep, and improve growth and development of their lambs.

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