02681naa a2200313 a 450000100080000000500110000800800410001902000150006010000160007524501100009126000090020152017640021065000240197465000100199865000170200865000140202565000140203965000160205365000120206965000150208165000180209665000200211465300260213465300180216070000160217870000160219470000140221077301430222420346572016-01-21       1982    bl uuuu     u00u1 u    #d  a09308481791 aGARCÍA, O.  aCrossbreeding of imported and native goats in a dry tropical environment. I. Survival and growth of kids.  c1982  aThree contemporary groups were formed for a mixed model analysis of body weights (kg) at successive ages of 1468 kids born between 1969 and 1978 in a crossbreeding experiment conducted at "Loma de Leon Field Station" in Venezuela. Group I (1969-1974) included: ½ Nubian ½ Native, ½ Alpine ½ Native, ½ Toggenburg ½ Native, 3/4 Nubian ¼ Native, and 3/4 Alpine ¼ Native. Group II (1971-1978): 3/4 Nubian ¼ Native, and 7/8 Nubian 1/8 Native. Group III (1975-1978): ½ Alpine ¼ Nubian, ¼ Native ½ Nubian, ¼ Alpine ¼ Native, and ½ Nubian ¼ Toggenburg ¼ Native. Birth, weaning (4 mo.), 6 month weights, and first year mortality rate for above breed groups were: Group I: 3.2, 11.3, 15.2, 26.5 percent; 3.4, 11.8, 17.0, 42.4 percent; 2.9, 11.8, 15.9, 39.9 percent; 3.1, 12.1, 15.3, 40 percent; and 3.4, 14.7, 18.1, 46.3 percent. Group II: 3.1, 11.8, 14.2, 40 percent; and 3.1, 11.9, 14.3, 41.3 percent. Group III: 3.2, 11.8, 14.8, 47.5 percent; 3.2, 12.6, 14.6, 38.3 percent; and 2.9, 11.5, 14.0, 37.0 percent, respectively. Phenotypic correlations between weights at birth and weaning, birth and 6 months, and weaning and 6 months were: Group I: 0.29, 0.30, 0.80; Group II: 0.24, 0.27, 0.75; and Group III: 0.28, 0.27, 0.84. All correlations were highly significant. Heritability for birth, weaning, and 6 month weights, calculated by intrasire correlation for the pooled data were: 0.15, 0.08, and 0.22. Repeatabilities were: 0.62, 0.64 and 0.49, respectively. Total litter weights at birth and weaning for the 3 groups were: 5.7, 15.1, 5.4, 14.7; and 5.6, 13.8. Repeatabilities were: 0.26, 0.036; 0.22, 0.053; and 0.16, 0.13, respectively. Significant positive relationships were found between litter weight at birth and postkidding weight of dams  aGenetic correlation  aGoats  aHeritability  aMortality  aVenezuela  aWeight gain  aCaprino  aCruzamento  aGanho de peso  aHereditariedade  aCorrelação genetica  aCrossbreeding1 aGARCÍA, E.1 aKENNEDY, B.1 aBRAVO, J.  tIn: INTERNATIONAL CONFERENCE ON GOAT PRODUCTION AND DISEASE, 3., 1982, Tucson. Proceedings... Scottsdale: Dairy Goat Journal, 1982. p. 510