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不同杂交组合羊生产性能比较的研究

发布时间:2019-03-15 19:38  文章来源:笔耕文化传播
【摘要】:上个世纪末,毛用型羊开始向肉毛兼用和肉用型发展,而我省缺乏专门的肉用绵羊品种,但有群体巨大的小尾寒羊,东北细毛羊群体,如何按照现代动物遗传理论,充分利用杂种优势,生产优质杂交商品肉羊,是我省乃自我国肉羊产业化发展的必由之路.虽然我省自上世纪90年代末以来,引进了杜泊.南肉美等多个专门的肉用绵羊品种,也开展了与地方品种进行杂交改良的许多工作,但始终没有选出适合于本地肉羊产业化发展的最终杂交组合.因此,本次试验测定了国外肉羊品种南非美利奴羊、杜泊羊与小尾寒羊、东北细毛羊的杂交一代羔羊的生长速度和产肉性能,并且进行对比分析。试验随机抽取南寒F1、杜寒F1、南北F1公母个30只以上,在同一饲养条件下饲养,通过测定出生、3、6、9月的生长速度指标和9月龄的产肉性能等指标,研究比较不同组合杂交羊的生产性能,从而为更好的选育出优秀的杂交羊品种提供依据。结果表明:利用南非美利奴羊与小尾寒羊进行杂交,其F1代在生长性能和产肉性能上表现出优异的杂交效果。证明利用南非美利奴羊与小尾寒羊杂交是提高肉羊生产水平的有效途径。
[Abstract]:At the end of the last century, wool sheep began to develop towards both meat and wool and meat use. However, there were no special meat sheep breeds in our province, but there was a large population of small tail Han sheep and northeast fine wool sheep, how to follow the modern animal genetic theory. Making full use of heterosis to produce high-quality commercial crossbred mutton sheep is the only way for the industrialization development of meat sheep in our province. Although our province has introduced Duber since the late 1990s. Many specialized meat sheep breeds, such as Nanmeimei, have also carried out a lot of work on hybridization and improvement with local breeds, but the final hybrid combination suitable for the industrialization development of local meat sheep has not been selected. Therefore, the growth rate and performance of crossbred lambs of foreign mutton breeds Merino sheep, Dupo sheep, small tail Han sheep and northeast fine wool sheep were measured and compared with those of other mutton sheep breeds (South Africa Merino sheep, Duper sheep, small tail Han sheep and Northeast fine wool sheep). The experiment randomly selected more than 30 male and female of South Cold F _ 1, du Han F _ 1 and North and South F1 and raised them under the same feeding condition. The growth speed indexes of birth, 3, 6, 9 months and the performance of meat production at 9 months old were measured by measuring the growth speed of birth, 3, 6 and 9 months of age. The production performance of different combinations of hybrid sheep was studied and compared, so as to provide basis for better breeding of excellent hybrid sheep breeds. The results showed that the F _ 1 hybrid between South African Merino sheep and small tail Han sheep showed excellent hybrid effect on growth performance and meat production performance. It is proved that the cross between South African Merino sheep and small tail Han sheep is an effective way to improve the production level of meat sheep.
【学位授予单位】:吉林农业大学
【学位级别】:硕士
【学位授予年份】:2015
【分类号】:S826

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