Biological Characteristics and Rumen Microorganisms of Gayal(Bos frontalis)in Yunnan Province  

云南大额牛的生物学特征及其瘤胃微生物特点综述(英文)

作　　者：杨舒黎[1] 苟潇[1] 冷静[1] 毛华明[1] 邓卫东[1] 吴锡川[1] 

机构地区：[1]云南农业大学云南省动物营养与饲料重点实验室,云南昆明650201

出　　处：《Agricultural Science & Technology》2011年第8期1234-1237,共4页农业科学与技术（英文版）

基　　金：Supported by National Natural Science Foundation of China(30960256,31060314);Project of Yunnan Education Department(V09Y0202)~~

摘　　要：[Objective]The paper was to provide reference for further study and development of gayal（Bos frontalis）.[Method]According to the research status at home and abroad,the biological characteristics and rumen microorganisms of gayal in Yunnan Province was studied.[Result]Gayal in Yunnan had typical body form and very good meat production performance,its muscle fiber diameter was significantly less than other kinds of cattle;the water holding ratio,muscle tenderness and muscle succulency were significantly higher than others;its amount,shape and structure of chromosome were different from yellow cattle（Bos taurus）and wild cattle（Bos gaurus）,and the amounts of those chromosomes（2n）were 58,60 and 56,respectively.It could create hybrid with yellow cattle;the gayal＇s special diet was bamboo,its in vitro dry matter digestibility（IVDMD）on various crude forage was significantly higher than yellow cattle in Yunnan;the viable bacteria and cellulolytic bacteria in rumen were 4.51×109 and 1.63×109 CFU/ml,which was significantly higher than yellow cattle in Yunnan,its dominant bacteria in rumen mainly was cellulolytic bacteria.[Conclusion]Gayal not only had high academic value,but also had a great development value.[目的]为大额牛的进一步研究及开发提供参考。[方法]根据国内外研究现状,综述了云南大额牛的生物学特征及其瘤胃微生物特点。[结果]云南大额牛具有较为典型的肉用牛体型和较好的产肉性能,且其肌纤维直径明显小于其他牛,牛肉的系水率、嫩度和多汁性明显高于其他牛;染色体的数目、形态、结构均不同于黄牛和野牛,三者染色体数目(2n)分别为58、60和56条,且可与黄牛杂交;独特的食性体现在以竹子为主食,且对各种粗饲料的体外干物质消化率都显著高于云南黄牛;瘤胃中总可见细菌和纤维分解菌分别为4.51×109和1.63×109个/ml,显著高于云南黄牛,其瘤胃优势细菌主要为纤维分解菌。[结论]云南大额牛不仅具有极高的学术研究价值,而且有极大的开发利用价值。

关 键 词：Gayal（Bos frontalis）in Yunnan Meat quality Genetic diversity Nutrient digestibility Rumen microorganism 

分 类 号：S823[农业科学—畜牧学]