动物营养学报 >

2018 , Vol. 30 >Issue 12: 5013 - 5022

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.12.029

反刍动物营养 Ruminant nutrition

饲粮中棕榈油脂肪粉添加水平对育肥期湖羊生长性能和营养物质消化代谢的影响

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  • 1. 中国农业科学院饲料研究所, 农业部饲料生物技术重点实验室, 北京 100081;
    2. 兰州大学草地农业科技学院, 兰州 730020
刘融(1996-),女,黑龙江牡丹江人,硕士研究生,从事反刍动物生物生理营养研究。E-mail:liurong_student@163.com

收稿日期: 2018-05-17

  网络出版日期: 2018-12-19

基金资助

中央级公益性科研院所基本科研业务费专项（2018）；国家肉羊产业技术体系建设专项（CARS-38）

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Effects of Palm Oil Powder Supplemental Level on Growth Performance and Nutrient Digestion and Metabolism of Finishing Hu Sheep

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  • 1. Key Laboratory of Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    2. College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China

Received date: 2018-05-17

  Online published: 2018-12-19

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摘要

本试验研究了饲粮中棕榈油脂肪粉添加水平对育肥期湖羊生长性能和营养物质消化代谢的影响，旨在确定饲粮中适宜的棕榈油脂肪粉添加水平。选用80只体况良好、体重（30±1） kg的4月龄湖羊公羊，随机分为4个组，每组4个重复，每个重复5只羊。试验配制4种饲粮，棕榈油脂肪粉的添加水平分别为1%、3%、5%和7%。饲养试验预试期10 d，正试期60 d。当试验羊平均体重达40 kg时，每组选6只接近平均体重的试验羊采用全收粪尿法进行消化代谢试验。消化代谢试验预试期5 d，正试期5 d。结果显示：1）1%组和3%组的全期（1~60 d）平均日增重显著高于5%组和7%组（P<0.05）；全期干物质采食量随棕榈油脂肪粉添加水平的提高而线性降低（P<0.05）；3%组全期料重比显著低于其他各组（P<0.05）。2）干物质、有机物、粗脂肪和中性洗涤纤维表观消化率各组之间差异均不显著（P>0.05）。3）各组间能量代谢各指标差异均不显著（P>0.05）。4）氮表观消化率随棕榈油脂肪添加水平的提高而线性升高（P<0.05），沉积氮各组间差异不显著（P>0.05）。本试验条件下，综合育肥期湖羊生长性能、营养物质表观消化率、能量代谢和氮代谢指标，育肥期湖羊饲粮中适宜的棕榈油脂肪粉添加水平为3%。

关键词： 棕榈油脂肪粉; 育肥期; 湖羊; 生长性能; 消化代谢

本文引用格式

刘融, 陶慧, 张乃锋, 李发弟, 刁其玉 . 饲粮中棕榈油脂肪粉添加水平对育肥期湖羊生长性能和营养物质消化代谢的影响[J]. 动物营养学报, 2018 , 30(12) : 5013 -5022 . DOI: 10.3969/j.issn.1006-267x.2018.12.029

Abstract

This experiment was conducted to investigate the effects of palm oil powder supplemental level on growth performance and nutrient digestion and metabolism of finishing Hu sheep, and to determine the proper supplemental level of palm oil powder in the diet of finishing Hu sheep. Eighty 4-month-old male Hu sheep weighed (30±1) kg were chosen and randomly assigned into 4 groups with 4 replicates per group and 5 sheep per replicate. Four diets were formulated, and the palm oil powder supplemental levels in the 4 diets were 1%, 3%, 5% and 7%, respectively. The feeding trial lasted for 10 days for adaptation, and 60 days for trial. When the average body weight of sheep was up to 40 kg, six sheep in each group were picked out for digestion and metabolism trial using total urine and fecal collection method. The digestion and metabolism trial lasted for 5 days for adaptation, and 5 days for sampling. The results showed as follows: 1) the average daily gain of whole period in 1% and 3% groups was significantly higher than that in 5% and 7% groups (P<0.05); the dry matter intake of whole period linearly declined as the palm oil powder supplemental level increasing (P<0.05); the feed/gain of whole period in 3% group was significantly higher than that in other groups (P<0.05). 2) The apparent digestibility of dry matter, organic matter, ether extract and neutral detergent fiber were not significantly different among groups (P>0.05). 3) There was no significant difference in each energy metabolism index among groups (P>0.05). 4) The apparent digestibility of nitrogen linearly was increased with the increase of palm oil powder level (P<0.05). There was no significant difference in retained nitrogen among groups (P>0.05). Under the present trial condition, synthesize the growth performance, nutrient apparent digestibility, energy metabolism and nitrogen metabolism indices, the proper supplemental level of palm oil powder in the diet of finishing Hu sheep is 3%.

Key words： palm oil powder; finishing period; Hu sheep; growth performance; digestion and metabolism

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