反刍动物营养 Ruminant nutrition

不同方法青贮的玉米秸秆对肉羊屠宰性能、组织和器官发育及血清生化指标的影响

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  • 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, 生物饲料开发国家工程研究中心, 北京 100081
陶莲(1984-),女,达斡尔族,内蒙古呼伦贝尔人,博士,研究方向为动物营养与饲料科学。E-mail:cautaolian@163.com

收稿日期: 2017-07-17

  网络出版日期: 2018-01-04

基金资助

国家肉羊产业技术体系(CARS-39);公益性行业(农业)科研专项经费项目"秸秆饲料生物转化技术研究与示范"(20120304202)

Effects of Corn Straw Silage Ensilaged Using Different Methods on Slaughter Performance, Tissue and Organ Development and Serum Biochemical Indices of Mutton Sheep

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  • Key Laboratory of Feed Biotechnology of the Ministry of Agriculture, National Engineering Research Center of Biological Feed, Feed Research Institute of Chinese Academy of Agricultural Sciences, Beijing 100081, China

Received date: 2017-07-17

  Online published: 2018-01-04

摘要

本试验探讨不同方法青贮的玉米秸秆对肉羊屠宰性能、组织和器官发育及血清生化指标的影响。采用单因素试验设计,选取体重为(24.00±2.42) kg的杜泊×小尾寒羊杂交F1代公羔羊80只,随机分成4组,分别以干玉米秸秆(空白正对照组)、无添加剂的玉米秸秆青贮(Ⅰ组)、添加酶菌复合剂的青贮的玉米秸秆(Ⅱ组)、羊草(羊草对照组)为粗饲料,每组5个重复,每个重复4只羊。预试期8 d,正试期60 d。结果表明:1)Ⅰ组、Ⅱ组干物质采食量、宰前活重和胴体重均显著高于空白对照组(P<0.05),料重比显著低于空白对照组(P<0.05);Ⅱ组屠宰率显著高于空白对照组(P<0.05),料重比显著低于Ⅰ组(P<0.05);Ⅰ组、Ⅱ组和羊草对照组之间胴体重和屠宰率差异不显著(P>0.05)。2)除Ⅰ组、Ⅱ组和羊草对照组肝脏和瘤胃重量显著高于空白对照组(P<0.05)外,各组其他组织、器官重量及它们占宰前活重比例差异不显著(P>0.05)。3)各组血清生化指标差异不显著(P>0.05)。综上,玉米秸秆经过酶菌复合剂处理后改善了玉米秸秆青贮的饲用价值,与羊草具有相同的促进生长、组织和器官发育的作用。

本文引用格式

陶莲, 冯文晓, 王玉荣, 毛建红, 刁其玉 . 不同方法青贮的玉米秸秆对肉羊屠宰性能、组织和器官发育及血清生化指标的影响[J]. 动物营养学报, 2018 , 30(1) : 84 -91 . DOI: 10.3969/j.issn.1006-267x.2018.01.012

Abstract

This experiment was conducted to investigate the effects of effects of corn straw silage ensilaged using different methods on slaughter performance, tissue and organ development and serum biochemical indices of mutton sheep. Eighty Dorper×small-tailed Han crossbred F1 male lambs with initial body weight of (24.00±2.42) kg were randomly divided into four groups with five replicates in each group and four lambs per replicate. Lambs in different groups were fed dried corn straw (blank control group, BC group), corn straw silage without additive (group Ⅰ), corn straw silage with enzyme-bacteria preparation (group Ⅱ) and Chinese wildrye (Chinese wildrye control group, CC group) as roughage, respectively. The experiment consisted of an 8-day of pre-trial period and a 60-day trial period. The results showed as follows:1) dry matter intake, live weight before slaughter (LWBS), carcass weight of group Ⅰ and group Ⅱ were significantly higher than those of BC group (P<0.05), and feed/gain was significantly lower than that of BC group (P<0.05); dressing percentage of group Ⅱ was significantly higher than that of BC group (P<0.05), feed/gain was significantly lower than that of group Ⅰ (P<0.05); no significant differences were found in carcass weight and dressing percentage among group Ⅰ, group Ⅱ and CC group. 2) Except liver and rumen weight of group Ⅰ, group Ⅱ and CC group were significantly higher than those of BC group (P<0.05), no significant differences were found in other tissue and organ weight, as well as their percentage of LWBS (P>0.05). 3) No significant differences were found in serum biochemical indices among groups (P>0.05). In conclusion, feeding value of corn straw silage was improved after enzyme-bacteria preparation treatment, which has the same effects in promoting growth, tissue and organ development of mutton sheep compared with Chinese wildrye.

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