Systematic breeding of Nanjiang Yellow goat

The generative reproduction and breeding of Nanjiang Yellow goats from Nanjiang County and Shunchang County has been conducted using the method of individual composite index in the family population.The results showed that the weight of the 2,4 and 6-month old male and female goats in the 3rd generation was higher than that the 1st generation of the same age.The rate of weight increase ranged from 13.16% to 16.43%.The average daily weight gain of the bucks and does from birth to 6-month in the 3rd generation was 95.5 g and 90.0 g,respectively.These were higher than those in the 1st generation.The increase rate was 15.45% and 15.38% for the bucks and the does,respectively.The chest girth,body length and withers height of the 6-month old bucks and does in the 3rd generation were 5.88% to 10.77% greater than those in the 1st generation.The coefficients of variations of body weight,chest girth,length and withers height in the 6 month old goats of the 3rd generation were all decreased,as compared to those in the 1st generation.Body size and appearance in the 3rd generation goats were uniform.The reproductive traits,birth weight in the 3 generations showed no significant difference.The body weight difference between the bucks and does at same age in each generation also was not significant.