动物营养学报 >

2018 , Vol. 30 >Issue 3: 963 - 972

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.03.020

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

不同中性洗涤纤维水平饲粮对早期断奶羔羊生长性能、血清指标、屠宰性能和组织器官发育的影响

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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. 山西农业大学动物科技学院, 太谷 030801
解彪(1991-),男,山西清徐人,硕士研究生,研究方向为动物营养与饲料科学。E-mail:xiebiao1122@163.com

收稿日期: 2017-09-03

  网络出版日期: 2018-03-05

基金资助

国家公益性行业（农业）科研专项（201303143）；国家肉羊产业技术体系建设专项（CARS-39）

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Effects of Different Levels of Dietary Neutral Detergent Fiber on Growth Performance, Serum Parameters, Slaughter Performance and Tissue and Organ Development of Early-Weaned Hu Lambs

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  • 1. Key Laboratory of Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute of Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    2. College of Animal Science and Technology, Shanxi Agricultural University, Taigu 030801, China

Received date: 2017-09-03

  Online published: 2018-03-05

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摘要

本试验旨在研究不同中性洗涤纤维（NDF）水平饲粮对早期断奶羔羊生长性能、血清指标、屠宰性能和组织器官发育的影响。选用100只体况良好，体重[（6.10±0.10）kg]和日龄[（18±2）日龄]接近的湖羊公羔，随机分为4个组，每组5个重复，每个重复5只羔羊。各组分别饲喂NDF水平分别为10%（10N组）、15%（15N组）、20%（20N组）和25%（25N组）的饲粮。所有羔羊在21~60日龄均饲喂相同代乳粉。预试期3 d，正试期70 d。结果表明：1）在50、60、90日龄时，20N和25N组羔羊平均体重均显著高于10N组（P<0.05），相应的在41~50日龄、51~60日龄及21~60日龄时，20N和25N组羔羊平均日增重和平均干物质采食量也显著高于10N组（P<0.05）。除51~60日龄，其余各阶段各组间羔羊饲料转化率差异不显著（P>0.05）。2）15N组羔羊血清肌酐含量显著高于20N和25N组（P<0.05），15N、20N和25N组羔羊血清β-羟丁酸含量显著高于10N组（P<0.05）。3）20N和25N组羔羊宰前活重和胴体重均显著高于10N组（P<0.05）。4）25N组羔羊头占宰前活重的比例显著低于10N组（P<0.05），而蹄重、心脏重、肝脏重和脾脏重均显著高于10N组（P<0.05）。20N组羔羊心脏重和肝脏重显著高于10N组（P<0.05）。综合得出，饲粮NDF水平为20%或30%时，能够促进羔羊生长性能、屠宰性能以及心脏、肝脏等器官重量。

关键词： 中性洗涤纤维; 早期断奶羔羊; 生长性能; 屠宰性能

本文引用格式

解彪, 张乃锋, 崔凯, 王世琴, 吕小康, 刁其玉 . 不同中性洗涤纤维水平饲粮对早期断奶羔羊生长性能、血清指标、屠宰性能和组织器官发育的影响[J]. 动物营养学报, 2018 , 30(3) : 963 -972 . DOI: 10.3969/j.issn.1006-267x.2018.03.020

Abstract

This experiment was conducted to study the effects of different levels of dietary neutral detergent fiber (NDF) on growth performance, serum parameters, slaughter performance and tissue and organ development of early-weaned hu lambs. One hundred healthy Hu lambs with similar body weight[(6.10±0.10) kg] and (18±2) days of age were randomly divided into four groups with five replicates in each group and five lambs in each replicate. Lambs in four groups were fed diets containing 10% (10N group), 15% (15N group), 20% (20N group) and 25% (25N group) NDF, respectively. All lambs received milk replacer at 21 to 60 days of age. The pre-experimental period lasted for 3 days, and the experimental period lasted for 70 days. The results showed as follows:1) at 50, 60 and 90 days of age, the average body weight of lambs in 20N and 25N groups was significantly higher than that in 10N group (P<0.05), correspondly, at 41 to 50, 51 to 60 and 21 to 60 days of age, the average daily gain and average dry matter intake of lambs in 20N and 25N groups were significantly higher than those in 10N group (P<0.05). The feed to gain ratio of lambs had no significant difference among all groups at all periods except at 51 to 60 days of age (P>0.05). 2) The serum creatinine content of lambs in 15N group was significantly higher than that in 20N and 25N groups (P<0.05), the serum β-hydroxybutyrate content of lambs in 15N, 20N and 25N groups was significantly higher than that in 10N group (P<0.05). 3) The live weight before slaughter and carcass weight of lambs in 20N and 25N groups were significantly higher than those in 10N group (P<0.05). 4) The head percentage of live weight before slaughter of lambs in 25N group was significantly lower than that in 10N group (P<0.05), but the feet weight, heart weight, liver weight and spleen weight of lambs were significantly higher than those in 10N group (P<0.05). The heart weight and liver weight of lambs in 20N group were significantly higher than those in 10N group (P<0.05). In conclusion, when dietary NDF level was 20% or 30%, it can improve the growth performance, slaughter performance and organ weight such as heart and liver of lambs.

Key words： NDF; early-weaned lambs; growth performance; slaughter performance

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