The breed characteristics and current developing situation of Hainan yellow cattle were eluci- dated in the review,the strategies of resource protection,utilization and development of Hainan yellow cattle were proposed by discussing deteriorating reasons of the breed in order to find out the concrete mea- sures of conserve the germplasm of Hainan yellow cattle under the tropic climate.

Genetic diversity in Xuwen and Hainan yellow cattle and Holstein cows based on protein polymorphisms was studied with starch electrophoresis in this experiment.

Relationship between Xuwen and Hainan yellow cattle was studied with RAPD technology using Holstein.

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 .

To investigate the genetic diversity and genetic data of Sinan Cattle in Guizhou province,the mitochondrial DNA D-loop region complete sequence in 21 individuals of Sinan cattle were sequenced.

Body weight and body sizes indexes of Sinan cattle and the F1 hybrids at newborn,6-,12-,18-and 24-month-old were measured,and the economic benefits from feeding hybrids were investigated in the present work.