Adjustment for non-genetic effects on body weight and size in Angora goats

摘要: Abstract Data on 864 Angora goats, collected from 1988 to 2000, were used study non-genetic effects body weight and daily gain birth 24 months of age size at different ages. Non-genetic factors included year, month, sex, kids, dam, type rearing. Birth sex rearing the major affecting growth goats. Age dam influenced weights weaning, early rate height withers. The unfavorable young dams their kids suggested that it was essential strengthen feeding management especially in maintaining during mating pregnancy. Growth born November February relatively slower sucking period but more rapid after weaning than those between March July. This can result seasonal change suggests is necessary plan kidding season rationally by controlling estrus time. as twin had lower single, a higher post-weaning rate. general trend differences singles twins decreased became older, possibly due decreasing maternal effect compensation kids. Additive multiplicative adjustment for rates derived least squares means subclasses Subclass variances tested heterogeneity with Levene's test. results determine appropriate effects.