苜蓿草粉替代花生秧对波尔山羊生长性能、抗氧化指标及经济效益的影响

doi:10.3969/j.issn.1006-267x.2019.07.055

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摘要本试验旨在研究苜蓿草粉替代花生秧对波尔山羊生长性能、抗氧化指标及经济效益的影响。选用75只波尔山羊，随机分为5组（每组3个重复，每个重复5只羊）：对照组饲喂基础饲粮，试验组饲喂用苜蓿草粉分别替代基础饲粮中10%、20%、30%、40%的花生秧的试验饲粮。结果表明：1）随着波尔山羊饲粮中苜蓿草粉替代水平的增加，平均日增重呈线性增加（P=0.001），料重比呈线性降低（P=0.001）。2）随着波尔山羊饲粮中苜蓿草粉替代水平的增加，血清谷丙转氨酶（ALT）及谷草转氨酶（AST）活性呈线性降低（P=0.004，P=0.001），球蛋白（GLB）及免疫球蛋白G（IgG）含量均呈二次方变化（P=0.001，P=0.001），先升高后降低，然而白球比（ALB/GLB）呈二次方变化（P=0.01），先降低后升高。3）随着波尔山羊饲粮中苜蓿草粉替代水平的增加，血清过氧化氢酶（CAT）及谷胱甘肽过氧化物酶（GSH-Px）活性呈线性升高（P=0.001，P=0.001），丙二醛（MDA）含量呈线性降低（P=0.048）。4）随着波尔山羊饲粮中苜蓿草粉替代水平的增加，肾脏总抗氧化能力（T-AOC）呈二次方变化（P=0.008），先升高后降低，GSH-Px活性呈线性升高（P=0.022），超氧化物歧化酶（SOD）活性呈线性升高（P=0.001）；脾脏CAT活性呈线性升高（P=0.001）。5）随着波尔山羊饲粮中苜蓿草粉替代水平的增加，十二指肠T-AOC呈线性升高（P=0.036），SOD活性呈二次方变化（P=0.015），先升高后降低，MDA含量呈线性降低（P=0.046）；空肠CAT活性呈线性升高（P=0.041）；回肠MDA含量呈线性降低（P=0.005），CAT活性呈线性升高（P=0.038）。6）试验组毛利润呈现先升高后降低的趋势，当苜蓿草粉的替代水平为30%时，毛利润达到最高。由此可见，波尔山羊饲粮中添加苜蓿草粉显著提高其生长性能，增强免疫力和抗氧化能力，苜蓿草粉替代水平为30%时，毛利润达到最高。

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关键词 ：苜蓿草粉, 波尔山羊, 生长性能, 抗氧化指标, 经济效益

Abstract：The experiment was conducted to investigate the effects of replacement of peanut straw by alfalfa meal on growth performance, antioxidant indices and economic benefit of Boer goat. In this study, seventy-five Boer goats were randomly divided into 5 groups (with 3 replicates per group and 5 goats per replicate):goats in control group were fed a basal diet, and the others in test groups were fed the experimental diets supplemented with 10%, 20%, 30% and 40% alfalfa meals to equally replace peanut vine, respectively. The results showed as follows:1) with the increasing of alfalfa meal replacement levels in diets, the average daily gain increased linearly (P=0.001) and the feed/gain decreased linearly (P=0.001). 2). With the increasing of alfalfa meal replacement levels in diets, the activities of glutamate pyruvate transaminase (ALT) and glutamic oxalacetic transaminase (AST) in serum ware decreased linearly (P=0.004, P=0.001), the changes of globulin (GLB) and immunoglobulin G (IgG) contents were quadratic (P=0.001, P=0.001), which had an increased trend at first and then decreased. However, albumin/globulin (ALB/GLB) showed a quadratic change (P=0.010), which had an decreased trend at first and then increased. 3) With the increasing of alfalfa meal replacement levels in diets, the activities of catalase (CAT) and glutathion peroxidase (GSH-Px) in serum increased linearly (P=0.001, P=0.001) and malonaldehyde (MDA) content decreased linearly (P=0.048). 4) With the increasing of alfalfa meal replacement levels in diets, the total antioxidant capacity (T-AOC) of kidney showed a quadratic change (P=0.008), which had an increased trend at first and then decreased, and GSH-Px activity increased linearly (P=0.022). The SOD activity increased linearly (P=0.001). Spleen CAT activity increased linearly(P=0.001). 5) With the increasing of alfalfa meal replacement levels in diets, the T-AOC of duodenum increased linearly (P=0.036), the SOD activity showed a quadratic change (P=0.015), which had an increased trend at first and then decreased, and the MDA content decreased linearly (P=0.046). The jejunum CAT activity increased linearly(P=0.041), ileum MDA content decreased linearly (P=0.005)and the CAT activity increased linearly (P=0.038). 6) The gross profit of the test groups increased first and then decreased, and the gross profit reached the highest when the replacement level of alfalfa meal was 30%. It indicates that the growth performance, immunity and antioxidant function of Boer goat are substantially improved by adding alfalfa meal in the diets, and the gross profit reaches the highest when the replacement level of alfalfa meal is 30%.

Key words： alfalfa meal Boer goat growth performance antioxidant indices economic benefit

收稿日期: 2019-01-10

PACS:

S826

基金资助:

国家牧草产业技术体系建设专项基金（CARS-34）

通讯作者: 史莹华,教授,博士生导师,E-mail:annysyh@henau.edu.cn E-mail: annysyh@henau.edu.cn

作者简介: 肖俊楠(1995-),男,河南平顶山人,硕士研究生,从事牧草营养与利用方面的研究。E-mail:xiaojunnan1994@126.com

引用本文:

肖俊楠, 郭治国, 李梓丹, 刘华, 孙骁, 张冬强, 王成章, 史莹华. 苜蓿草粉替代花生秧对波尔山羊生长性能、抗氧化指标及经济效益的影响[J]. 动物营养学报, 2019, 31(7): 3411-3420.
XIAO Junnan, GUO Zhiguo, LI Zidan, LIU Hua, SUN Xiao, ZHANG Dongqiang, WANG Chengzhang, SHI Yinghua. Effects of Replacement of Peanut Straw by Alfalfa Meal on Growth Performance, Antioxidant Indices and Economic Benefit of Boer Goat. Chinese Journal of Animal Nutrition, 2019, 31(7): 3411-3420.

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http://www.chinajan.com/CN/10.3969/j.issn.1006-267x.2019.07.055 或 http://www.chinajan.com/CN/Y2019/V31/I7/3411

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