Survey on the Herd of National Original Breeding Farm of Jinnan Cattle;

In order to investigate the male and female origin of Jinnan cattle, 30 male Jinnan cattle were selected and analyzed in INRA124 locus of Y chromosome and Cytb gene.

PCR-RFLP technique was used to analyze the relationship between the polymorphisms of IGFBP3 gene and beef performance in 24 Luxi cattles and 19 Jinnan cattles.

Studies on the IVM and IVF of Small Antral Follicular Oocytes in Nanyang Cattle;

Four growth curve models including Brody, Von Bertallanffy, Gompertz and Logistic founctions were used to analyze the body weight of female Nanyang cattle.

In order to produce bezoar rapidly and improve output, the plastic web for special purpose, bacteria culture and so on were planted into the gall-bladder of Nanyang cattle by surgical operation, which had no effect on the growth, reproduction, field work, plumpness and health of the Nanyang cattle .

Conservation Countermeasures of Nanyang Yellow Cattle Genetic Resources;

Nanyang yellow cattle is one of the five well-bred cattles in China,but the breed number of Nanyang cattle was gradually decreased and the blind introduction of crossbred breeds and lack of support of financing,technique and stable environment resulted in the high simplification degree of Nanyang yellow cattle at the same time.

DNA Extracted from Nanyang yellow cattle s hair follicle and blood was used to RAPD amplification.

Study on Microsatellite Polymorphism of the Minnan Yellow Cattle;

In a repeat 3×3 Latin square experiment design,nitrogen balance trials were conducted with nine 14-month-old Minnan yellow cattle bulls to study effects of dietary protein levels on nitrogen digestion and deposition regulation.

and Bos indicus and Bos taurus were the primarily bloods of Yunnan yellow cattle, while Wenshan yellow cattle, mainly coming from Bos .