內(nèi)蒙古扎魯特旗科爾沁牛生長特性及其瘤胃微生物多樣性.pdf

1、半牧半舍飼養(yǎng)條件下科爾沁牛生長特性和生產(chǎn)性能內(nèi)蒙古扎魯特旗科爾沁牛生長特性及其瘤胃微生物多樣性Growth Characteristics and Ruminal Microbial Diversity of HorqinCattle in Jarud Banner of Inner Mongolia申 請 人：王金海學(xué)科專業(yè)：農(nóng)業(yè)養(yǎng)殖研究方向：肉牛飼養(yǎng)管理與改良學(xué)位類別：專業(yè)學(xué)位指導(dǎo)教師：牛化欣 教授論文提交日期：二○一八年六月碩 士

2、 學(xué) 位 論 文分類號(hào) S8-1I C S學(xué)校代碼 10136學(xué) 號(hào) 201300248Growth Characteristics and Ruminal Microbial Diversity ofHorqin Cattle in Jarud Banner of Inner MongoliaAbstractIn order to study the growth characteristics of Horqin cattle in

3、 Jarud Banner, InnerMongolia, this investigation summed up the Horqin cattle growth regularity andcharacteristics by comparing and analyzing Horqin cattle growth characteristics statistics,and this study analyzed the rum

4、en microbial diversity aiming to provide scientific evidencefor the standardization and systematic farming of Horqin cattle.In 2015 and 2017, the born, six months, twelve months and eighteen months oldHorbin cattle from

5、different areas of the Jarud were selected and their weights weremeasured on a scale. The lengths of the special measuring rods and soft feet were measured.Body height, chest circumference, and tube circumference, combin

6、ed with data from 1990,2001, and 2010, were analyzed and compared; 2 cattle were slaughtered at theslaughterhouse in Jarud and cattle rumen was stripped, and 16S rRNA high-throughputsequencing technology was used to dete

7、ct the rearing ruminal microbial diversity in Horqincattle under different conditions.The results showed that the height, body length, chest circumference, tubecircumference, and body weight of the Horqin cattle have bee

8、n significantly improvedthrough 27 years of improvement. And through high-throughput sequencing, Ruminococcus,Ruminpcoccus, Ruminococcaceae UCG005, Fibrobacter, Prevotella, Papillibacter,Christensenellaceae, Erysipelotri

9、chaceae, Rikenellaceae and unclassified Bacteroidaleswere found in the rumen of Horqin cattle. The genus Erysipelotrichaceae, Rikenellaceae,unclassified Bacteroidales, and the like include a variety of fiber-degrading ba

10、cteria, suchas rumenococcus and filamentous genus microorganisms.In conclusion，by measuring and analyzing the body weight and body size of Horqincattle, a basic database of the growth regularity and production performanc