| More than 21000 data based on birth type, body weights and sizes at birth andeach month after birth from 1067 Boer kids were analyzed to study the growth curvesof weight,length,height and chest girth in different sex and birth types. Growth modelsof yearling goat were built by using the program of SPSS and MATLAB. The resultsshowed that the weaning did not effect the male's growth and the male's weight washeavier than the female's at the same age. From the growth model of body weight, aninflexion was found at the age of 3months for the male and 7months for the femaleWhile from the growth model of the body sizes, an inflexion was found at the age of 9months for the male and 7months for the female. Whether the male or the female, thesingle always grew the most quickly, twins and triplets grew in a similar model.All the evaluate grade data for the appearance traits based on differentyears,number of sibs and sex from 700 pure breeding Boer goat were analyzed tostudy the phenotypic correlations between ear shape, nose shape, meteor, hair colorand skin color, and find out the influences of the year, no. of sibs and sex on thesetraits. The results showed that the percentage of evaluate grade 1 of all the traits,excluding skin color and meteor, were the highest (＞58%), which indicated that theprogeny of the improved Boer goat in China retained good breed standard. There weresignificant distinctions of ear shape,meteor, hair color and skin color in different year,while, the no. of sibs and sex only influenced a few traits. There were moderate andpositive significant correlations among ear color, hair color and skin color (r＞0.15)(P＜0.01), negative and significant correlations between meteor and nose shape andhair color (P＜0.01) .The correlations between other traits were significant but verysmall (P＜0.01).All the evaluate grade data for the exterior traits, including ear shape, nose shape,meteor, ear color, hair color and skin color, and body weight for birth, 3months,6months and 12months based on different year, no. of sibs and sex from 542 Boerkids, and reproduction traits from 269 Boer ewe were analyzed to study therelationship between the exterior traits, body weight and the reproduction traits. The results showed that the ear color and skin color had significant influence on the bodyweight for birth, 3months, 6months and 12months for Boer kids (P＜0.05) . Ear colorhad significant influence on the number born for ewe (P＜0.05) . Hair color also hadsignificant influence on the number of alive kids for birth and ablactation. The otherexterior traits had no significant influence on the body weight for kids andreproduction traits for ewe (P＞0.05) . Therefore, the ear color, hair color and skincolor can be as accessorial markers for Boer goat's breeding and selection.Summarizing the improvement effects of Boer goat crossbred the native goat inlatterly 10 years aim to evaluate the using values and the future development for Boergoat in China. The results showed that the effect of Boer goat crossbred the nativegoat was very significant. Contrasting to the native goat, the weight rise ratio for thecrossbred kids increased with the increased age of month. The weight rise ratios at theage of birth, 3months and 6months were up to 49.57%, 55.00%, 71.58%, respectively.The rise ratio rule of the chest girth was similar to those of weight. However, the riseratios of the body length and body height significant decreased at the age of 3 months,and then increased gradually. Therefore, the Boer goat had good use of crossbredvalue and wide future in Hubei province. We should make extend popular accordingto the different environment, which can bring immensurable value to our goat feedingindustry.
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