内蒙古绒山羊部分繁殖性状及对抓绒性状影响的研究

发布时间：2018-04-27 00:37

本文选题：绒山羊 + 繁殖性状　；参考：《内蒙古农业大学》2015年硕士论文

【摘要】：为了试图发现内蒙古阿尔巴斯白绒山羊繁殖性状的一般遗传规律,提高阿尔巴斯白绒山羊的繁殖性能,本研究利用1998-2013年的内蒙古绒山羊配种记录、出生记录和2008-2011年的绒毛品质记录,分别进行了配种日期对内蒙古阿尔巴斯白绒山羊产羔数影响的研究、内蒙古阿尔巴斯白绒山羊繁殖性状遗传参数估计的研究和内蒙古绒山羊繁殖性状与抓绒性状之间关系的初步研究。研究结果如下：(1)配种日期为9月29日-10月16日的(胎)产羔数最高(1.76±0.42),其次是10月17日-11月3日(1.62±0.49),且母羊发情月份和发情高峰主要集中在10月份,所以生产中可以把10月份作为内蒙古绒山羊的最佳配种期。(2)内蒙古绒山羊产羔数、初生体重、断奶体重、初生窝重和妊娠期的遗传均属于中等偏低遗传力。且产羔数与初生个体重的表型和遗传相关呈负相关(-0.12、-0.25),与断奶体重和出生窝重呈强正相关关系(0.47-0.60)。因此,母羊(胎)产羔数大的其羔羊初生个体重小,而断奶体重和初生窝重大。(3)由繁殖性状与抓绒性状之间的相关关系可知,产羔数与绒长呈负遗传相关(-0.1092),与绒细呈正遗传相关(0.1063)。羔羊初生重与毛长呈高度负遗传相关(-0.9662),与毛细呈中等偏低遗传相关(0.1281),与绒长呈高度正遗传相关(0.9877),周岁重与毛细、绒细呈中等偏低遗传相关,因此我们可以通过制定合理的选配方案,对母羊产羔数和羔羊初生重进行选择,进而改善绒山羊的绒毛品质。
[Abstract]:In order to find out the general genetic rule of breeding traits of Inner Mongolia Albas white cashmere goat and improve its reproductive performance, this study made use of the records of Inner Mongolia cashmere goat breeding from 1998 to 2013. The effects of mating date on litter size of Inner Mongolia Albanian white cashmere goat were studied by birth record and villous quality record from 2008 to 2011. A study on the estimation of genetic parameters of breeding traits in Inner Mongolia Albas White Cashmere Goats and the preliminary study on the relationship between Reproductive traits and Cashmere catching traits in Inner Mongolia Cashmere Goats. The results were as follows: (1) the highest litter size was 1.76 卤0.42% between September 29 and October 16, followed by 1.62 卤0.49m from October 17 to November 3. The estrus month and estrus peak of estrus were mainly concentrated in October. Therefore, October can be regarded as the best breeding period for Inner Mongolia cashmere goats.) the inheritance of lamb, birth weight, weaning weight, birth litter weight and gestational period of Inner Mongolia cashmere goats all belong to medium low heritability. There was a negative correlation between litter size and the phenotypic and genetic correlation of birth weight, a strong positive correlation between litter size and weaning weight and birth litter weight. Therefore, the lambs with large lambs have low birth weight, while weaning weight and litter weight are significant. The correlation between breeding traits and cashmere grabbing traits can be seen from the relationship between weaning weight and litter weight. There was a negative genetic correlation between lambs and velvet length, and a positive genetic correlation between lambs and velvet fineness. There was a high negative genetic correlation between birth weight and wool length, a low genetic correlation with capillary size (0.1281), a high positive genetic correlation with velvet length (0.9877), and a moderate low genetic correlation between annual weight and capillary size and velvet size. Therefore, we can select the lambs and the birth weight of lambs by making a reasonable selection scheme, and then improve the wool quality of cashmere goats.
【学位授予单位】：内蒙古农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S827

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