Abstract
This study was conducted on goats of three genetical groups. these groups were local (L) Shammi (S) and shammi X local (SL), raised at Agargouf goat breeding station to study birth weight and weaning weight of kids and productivity of dose ( total weaning weight of kids / dose and / k.g. of dose weight). The overall mean of birth weight for 591 kids was ( 3.023 ± 0.035) k.g. Significant effect of year of kidding , sex of kid and type of birth on birth weight were found. The males exceed the females by 0.198 k.g. and the single exceed the twin by 0.412 k.g. However genetic group and weight of does showed no significant effect on birth weight. The overall mean of weaning weight for 472 kids recorded was (13.048 ± 0.214)k.g. Significant effect of year of kidding, type of birth, sex of kid and weight of does at kidding were observed. The (S) kids exceed both (L) and (SL) kids by (1.560 and 1.307)k.g. respectively. The male exceed the female and the single exceed the twin by (0.607 and 2.361)k.g., respectively. The overall mean of productivity (total weaning weight of kids/does) was ( 13.713 ± 0.196) k.g. The effect of genetic group and year of kidding were significant. The (S) exceed both (L) and (SL) by (1.399 and 1.342) k.g., respectively. The overall mean of total weaning weight of kids/k.g. of does was (0.386 ± 0.005)k.g. Significant effect of genetic group on total weaning weight of kids/k.g. of does observed. However the genetic group (SL) exceed the (S) and (L) groups, while the effect of year of kidding was significant. Repeatability estimated for total weaning weight of kids/does was ( 0.28 ± 0.06).
