内蒙古绒山羊非生绒期内褪黑激素埋植时间对山羊绒生产性能的影响  

Effect of melatonin Implantation time on cashmere production of Inner Mongolia Cashmere Goats during the cashmere non-growing period

作　　者：初文生 刘影[1] 段春辉[1] 张欢[1] 许建海[2] 刘少峰 刘少卿 张微[1] 

机构地区：[1]中国农业大学动物科学技术学院,北京100193 [2]中国农业大学动物医学院,北京100193 [3]内蒙古亿维白绒山羊有限责任公司,内蒙古鄂尔多斯016200

出　　处：《中国农业大学学报》2015年第3期121-125,共5页Journal of China Agricultural University

基　　金：教育部新世纪优秀人才支持计划资助项目(NCET-11-0489);现代农业产业技术体系(CARS-40)

摘　　要：为研究内蒙古绒山羊非生绒期内褪黑激素埋植时间对山羊绒产量、长度以及细度的影响,于当年4月底抓绒时,选用体重相近、上年度产绒量基本一致的2～3岁内蒙古绒山羊母羊30只,随机分为3组,包括1个对照组和2个褪黑激素埋植组（4和6月2次埋植组、6月单次埋植组）,试验开始后逐月观察山羊绒生长情况。结果表明：1）无论是4和6月2次,还是6月单次埋植褪黑激素均能够诱导非生绒期内山羊绒生长,整个羊绒生产周期内没有二次生绒和提前脱绒;2）埋植褪黑激素对山羊绒细度没有影响（P〉0.05）,4和6月埋植褪黑激素组绒山羊产绒量和山羊绒长度显著高于6月埋植组和对照组（P〈0.05）,6月埋植组与对照组间差异不显著（P〉0.05）;3）相比于上年山羊绒品质指标,除4和6月埋植组山羊绒长度显著增加（P〈0.05）外,其他处理组长度和细度均无差异（P〉0.05）。因此,4和6月份埋植褪黑激素能够有效诱导山羊绒生长,诱导产生的长绒期与自然长绒期衔接,无提前脱绒,显著提高山羊绒的生产性能。This study was conducted to investigate the effects of melatonin implantation time on cashmere yield, length and fibre diameter of Inner Mongolia Cashmere Goats during the cashmere non-growing period. Thirty 2 to 3 years old female Inner Mongolia Cashmere Goats with similar weight and cashmere yield in previous year were randomly assigned to one of the three groups （n = 10）,including the control group,two treatment groups,where melatonin （2 mg/kg BW） was implanted either at the end of April and June or only at the end of June. Cashmere growth was observed during the year following implantation. Melatonin treatment at the appropriate time could make the cashmere growth induced by melatonin implants inosculates with the natural cashmere growth phase, as to improve the cashmere production. Administration of melatonin induced the cashmere growth during the cashmere non-growing period and no earlier cashmere shedding and another cashmere growth cycle in all goats were observed in the whole cashmere growth cycle. The results showed that,cashmere fibre diameter was not influenced by melatonin implantation （P〉0.05）. Cashmere yield and length were higher in goats implanted in April and June than those of animals implanted in June and the control （ P〈0.05）, no difference were observed between implanted in June group and the control （P〉0.05）. Cashmere length in goats implanted in April and June was higher compared with that of previous year （P〉0.05） and no differences were observed in implanted in June group and the control （P〉0.05）. There were no differences in cashmere fibre diameter in all the three treatments compared with that of pervious year （ P〉0.05）. These data indicate that melatonin implantation in April and June could initiated cashmere growth and improved cashmere production without earlier cashmere shedding,which might be one of the most effective method in practice for improving cashmere production.

关 键 词：绒山羊 褪黑激素 埋植时间 产绒性能 非生绒期 

分 类 号：S826.9[农业科学—畜牧学] S815.2[农业科学—畜牧兽医]