| 不同能量水平和采精频率对绒山羊种公羊精液品质的影响 |
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| 引用本文： | 李碧波,雷耀庚,王兴涛,杨万里,杨雨鑫,陈玉林.不同能量水平和采精频率对绒山羊种公羊精液品质的影响[J].中国畜牧兽医,2015,42(8):2116-2123. |
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| 作者姓名： | 李碧波 雷耀庚 王兴涛 杨万里 杨雨鑫 陈玉林 |
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| 作者单位： | 1. 西北农林科技大学动物科技学院, 杨凌 712100;2. 西北农林科技大学动物医学院, 杨凌 712100 |
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| 基金项目： | 国家绒毛用羊产业技术体系(CARS-40-13);公益性行业(农业)科研专项(201303059);陕西省农业科技攻关项目(2014K01-17-04) |
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| 摘 要： | 为研究日粮不同能量水平对陕北白绒山羊种公羊体重、血清睾酮水平和精液品质的影响,选择12只健康的种公羊按随机区组设计分为4组,每组3个重复,每个重复1只羊。日粮按NRC(1981,2007)标准推荐量的85%、100%、115%和130%设置4个能量梯度。结果表明,各个试验阶段日粮能量水平对试验公羊的平均日增重影响极显著(P< 0.01)。Ⅰ组和Ⅱ组公羊在整个试验期体重呈现先减后增的趋势,Ⅲ组和Ⅳ组公羊体重呈现先增后减再增的趋势;5 d 2次频率下公羊的睾酮和射精量高于5 d 4次的频率。日粮能量水平对试验公羊的血清睾酮水平和有效精子数影响极显著(P< 0.01),对射精量和精子密度影响显著(P< 0.05)。射精量、精子密度和有效精子数均以Ⅲ组最好。采精频率和能量浓度只对睾酮水平有极显著的互作效应(P< 0.01)。综上所述,陕北白绒山羊种公羊代谢能(ME)需要以12.08 MJ/d为宜。
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| 关 键 词： | 绒山羊种公羊 能量水平 采精频率 睾酮含量 精液品质 |
| 收稿时间： | 2014-12-29 |
Effects of Different Dietary Energy Level and Semen Collection Frequency on Buck's Semen Quality in Cashmere Goats |
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| LI Bi-bo,LEI Yao-geng,WANG Xing-tao,YANG Wan-li,YANG Yu-xin,CHEN Yu-lin.Effects of Different Dietary Energy Level and Semen Collection Frequency on Buck's Semen Quality in Cashmere Goats[J].China Animal Husbandry & Veterinary Medicine,2015,42(8):2116-2123. |
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| Authors: | LI Bi-bo LEI Yao-geng WANG Xing-tao YANG Wan-li YANG Yu-xin CHEN Yu-lin |
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| Institution: | 1. College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China;2. College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China |
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| Abstract: | The experiment was aimed to study the effects of dietary energy level on body weights, serum testosterone concentrations and semen quality of Shaanbei White cashmere goat bucks.A total of 12 healthy bucks were selected and divided into 4 groups according to randomized block design with 3 replicates per group, each replicate included 1 buck.Four diets were formulated by the recommendation of NRC (1981, 2007) at 85%, 100%, 115% and 130%.The results showed as that the dietary energy level had extremely remarkable effect on bucks' ADG in each stage (P< 0.01).The weight of bucks in groups Ⅰ and Ⅱ decreased firstly then increased while there were a trend of increasing firstly then decreasing then increasing again in groups Ⅲ and Ⅳ.Serum testosterone levels and ejaculations under the frequency of two times per five days were higher as compared to the frequency of four times per five days.Dietary energy levels had extremely significant influence on serum testosterone concentrations and the number of effective sperms (P< 0.01), and ejaculations and sperm destiny significantly (P< 0.05).The ejaculations, sperm destiny and the number of effective sperms in group Ⅲ were optimum.There was dietary energy×semen collection frequency interaction on serum testosterone concentration (P< 0.01).It could be concluded that the appropriate ME requirement of Shaanbei White cashmere goat bucks was 12.08 MJ/d. |
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| Keywords: | cashmere goat bucks energy levels semen collection frequency testosterone concentrations semen quality |
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