Study On Variation Of Cashmere Traits Of Inner Mongolia White Cashmere Goats And It Influence By Invitation Facts

In the study, the records of healthy groups production performance come from Inner Mongolia cashmere goat breeding farms, the weather bureau climate index and Pasture quality monitoring data of Erdos. This article contains three parts of study:one: Using the regression model program of SAS statistical software, calculated the phenotypic and genetic tendency of Inner Mongolia cashmere goat fleece characters between2003and2012, also calculated the growth rate of phenotypic value and breeding value along with the change of years and age, aiming to analysis the relationship between the Cashmere yield and the weight after fleecing. Two:According to the weight change rules, the study divided the cashmere yield and weight after fleece into7parts:18-27.5kg,28-37.5kg,38-47.5kg,48-57.5kg,58-67.5kg,68-77.5kg,78-87.5kg. Then the study calculated the growth rate of cashmere yield and unit weight fleece with the increasing of body weight, to analysis the relationship between cashmere yield and weight after fleece. Three:Comparing the change trend of fleece traits phenotypic, the study analyzed the influencing rule of climatic factors and the forage quality on cashmere yield and weight after fleece in the years from2003to2012. Eventually find the relationship between the fleece characters which cashmere yield and weight after fleece, excavate the influence to fleece characters by climate factors and pasture conditions. Thus to guide the breeding work, more important is to provide certain guidance Production work. The results as follows:(1)There was a competitive relationship between the cashmere yield and weight after fleece.Climatic factors, had a certain influence on fleece characters, and the relations are positively correlative. But in the years with the reducing of cashmere yield, climate factors was positive correlation of cashmere yield, while negative correlation with weight after fleece. Indicating that cashmere yield had a lower sensitivity to environment compared with weight after fleece.Along with the significantly reducing of high quality Grass ratio, cashmere yield will increase but weight decrease; Grass in good proportion Small amplitude to reduce, cashmere yield decrease and weight increase.The forage quality has no influence to2years old age of goats After3years old, the Grass layer height there is no Significant influence to Fleece traits.(2) To provide theoretical and technical guidance for Cashmere goat production. On the basis of weather prognosis and pasture values estimated forecast A sharp change in the environment of the year, according to weather prognosis and pasture values estimated forecast A sharp change in the environment of the year, take prevention of steps, in order to improve production efficiency.