The Research Of Commercialized Production Technology Pattern On Xinjiang Prairie Beef Cattle

The experiment study the change of the beef cattle's growth and development under same nutritional level condition, the different variety, the different period, the different raising way as well as the effect of the meat performance and the meat quality of the carcass influenced by the growth and development.Experiments one: The experiment divide into 3 groups according to the variety of the experimental cow and study the same weigh and different variety cows' growth and development raising the milk materials. The result indicated:The difference of the weight gain per day of Angus, the Holstein and the Xinjiang Brown mixed is not significant(P>0.05) in early weaning stage,The cultivation cost unit weight gain of Angus is 8.25 yuan/ kg, the Holstein is 9.62 yuan/ kg, the Xinjiang Brown mixed is 8.25 yuan/ kg. The absolute increasement on the slanting long and the body straight long of Angus is higher than the Xinjiang Brown mixed and the Holstein,the difference is significant (P<0.05) in early weaning stage.Experiments two: The experiment choose the same moon's age calf cow which is weaned with the age of the conventional raising way as the control group in the basis of the experiment one,study the growth developmental mechanism of the different variety calf cows under the herds add raises condition.Angus 's hip width is remarkably bigger than the Xinjiang Brown mixed cow (P<0.05) end the experiment, In the herds add raises stage, the difference of the liveweight gain per day of An Za, the Holstein, the Xinjiang Brown mixed cow three varieties are not significant (P>0.05),but are all extremely higher than the control group local variety cow. Compared with the same moon's age control group local variety cow,the difference of every body measurement in the 3-6 moon's age is very big,many difference achieved significant (P<0.05) and extremely significant(P<0.01).The development of the Xinjiang Brown mixed cow is fastest, it's increasement on slanting long is significant bigger than Angus and the local variety cow(P<0.05). The development of Angus mixed cow is fastest, it's increasement on hip width is significant bigger than the Xinjiang Brown cow and the Holstein (P<0.05) ,the local variety and extremely significant bigger than the local variety cow (P<0.01).The net income of every variety under the herds add raises condition is: the Xinjiang Brown cow 285.7 yuan, the Holstein 280.7 yuan, Angus 243.2 yuan, the local variety cow 4.6 yuan.Experiments three: The experiment rear in confinement to the three variety calf cow in the early weaning group by the different fattening time, study the difference of every variety cow under the same nutritional level and the different period. The result indicated: In 7-10 moon's age rearing in confinement, except the difference of the body straight long in every variety cow is significant (P<0.05).The difference of other body measurement increment quota are not significant (P>0.05). The liveweight gain per day and income of the Xinjiang Brown mixed cow is highest than Angus and the Holstein,the last is lowest, but the difference is not significant(P>0.05).The feature of variety in withers height is obvious. The withers height of Holstein is highest than the Xinjiang Brown mixed cow and Angus, the last is lowest.In 10-12 moon's age Angus of the live weight gain per day and income is highest than the the Xinjiang Brown mixed cow and Dutch Stan, the last is lowest.The difference of the withers height increment including chest circumference, hip width ,the body straight long is significant in different variety(P<0.05). In 12-15 moon's age the liveweight gain per day and income of the Xinjiang Brown mixed cow is highest than Holstein and Angus, the last is lowest. In 15-18 moon's age the live weight gain per day and income of Angus is highest than the Xinjiang Brown mixed cow and Holstein, the last is lowest.Except he difference of the body straight long increment is significant in different variety(P<0.05),Other body measurement increment quota are not significant (P>0.05) .Experiments four: The experiment study the slaughter and meat performance and the difference between variety. The result indicated: The difference of dressing percentage and neat percentage of different moon 's age is extremely significant (P<0.01).The difference of meat-bone ratio is significant between 10 moon 's age and 18 moon 's age (P<0.05). The difference of meat-bone ratio is not significant between 12 moon 's age and 10,18 moon 's age (P>0.05).Synthesis every moon 's age data from the angle of variety, the quota including dressing percentage, neat percentage and meat-bone ratio of Angus is highest than the Xinjiang Brown mixed cow and Holstein, the last is lowest.The high-end meat in sectioning meat of the Xinjiang Brown mixed cow is highest,the prime meat of Holstein is highest, ordinary meat of Angus is highest,but the difference of variety is not significant (P>0.05) .Experiments five: The experiment study the difference of meat quality in different moon 's age. Experiments six: The experiment study the varietal and regional difference of meat quality in different moon 's age. The result indicated:The difference of dehydration ratio,water holding ratio and steam cooked loss is not significant (P>0.05). The difference of the shearing force and glucolysis latent force is significant (P<0.05). The difference of the dehydration ratio,water holding ratio and steam cooked loss is significant between 12 moon 's age and 10,18 moon 's age (P<0.05). The difference of the collagen protein,whole soluble protein, myogen and intermuscular fatness is significant in every moon 's age (P<0.05).Follow the age increasing,the ash content express increment trend.The analysing result of meat quality indicated: the difference of many measurement data of meat quality in variety and region is significant (P<0.05).The meat quality exist interaction efficiency between variety,region ,nutrition level and moon 's age.