03649naa a2200421 a 450000100080000000500110000800800410001910000220006024500870008226000090016952025320017865000210271065000240273165000110275565000210276665000140278765000120280165000140281365000100282765000240283765000230286165000150288465000100289965000120290965000240292165300110294565300140295665300140297065300130298465300140299765300230301165300140303465300290304870000170307770000280309470000170312277300880313915141842021-01-27       1982    bl uuuu     u00u1 u    #d1 aSIMPLÍCIO, A. A.  aDesempenho produtivo de ovelhas da raça Somalis brasileira no Nordeste do Brasil.  c1982  aResumo: A puberdade, em media, ocorreu aos 333,4 dias de idade e 18,3Kg de peso vivo, e o primeiro parto aos 531,8 dias e 22,2Kg de peso. As taxas de ovulacao foram de 1,05 para a primeira e de 1,13 para a segunda. Das borregas laparotomizadas, 87,5% ovularam antes do primeiro estro clinco e o ovario direito mostrou maior atividade. O ciclo estral foi de 18,91 e 18,26 dias e o periodo estral de 29,90 e 30,77 horas, para a epoca chuvosa e seca, respectivamente, sendo maior em femeas adultas (28,01 vs 31,23 horas). Nao houve diferenca estatistica entre femeas jovens e adultas para as taxas de fertilidade ao parto e de aborto. O periodo de gestacao e a proporcao sexual foram de 148,7 dias e 47,8%. A prolificidade total foi de 1,26, sendo 1,10 e 1,32 para matrizes primiparas e pluriparas, respectivamente. O intervalo entre o parto e primeiro estro pos-parto foi de 70,12 dias e o intervalo entre partos, de 281,3 dias. A producao media diaria de leite nos primeiros 80 dias de lactacao foi de 211,7g/ovelha. A media do peso ao nascer e ao desmame foi de 2,02 e 10,5Kg. Os pesos medios, pre e pos-estacao de monta e ao parto, foram 25,2; 26,2 e 26,1Kg, respectivamente.  [Productive performance of Brazilian Somali ewes in the tropical Northeast Region of Brazil]. Abstract: Mean ege at puberty was 333.4 days when ewes weighed 18.3 kg. First Iambing occurred at 531.8 days and 22.2 kg body weight. Ovulation rato at puberty was 1.05 at firet 1.13 at second ovulations. In Iaparotomlzed Iambs, 87.5 percent ovulated before first puberal estrus and right ovary appeared to be more active. In rainy and dry seasons respectively, the estrus cycle Iength was 18.91 and 18.26 days and estrus period was 29.20 and 30.17 hours, being longer in older ewes (28.01 vs 31.23 hours). There was no significant difference in fertility rato at parturition and abortions, dueto age of ewes. The mean gestation period was 148.7 days and sex ratio of Iambs was 47.80. Overali prolificacy was 1.26 and 1.10 and 1.32 for primipara and pluripara ewes respectively. There was a marked difference in mortality of Iambs born to prlmipara (19.05%) and pluripara (5.33%) ewes. Interval between parturition to first post-partum estrus was 70.13 days and interval between Iambings was 281.3 days. MiIk production averaged 211.7 g/ewe/day during first 80 days lactation. Mean birth weight was 2.02 kg and 10.5 kg at weaning. Mean body weight imrnediately before and after breeding season and at parturition wero 25.2, 26.2 and 26.1 kg, respectively.  aAnimal fertility  aAnimal reproduction  aBrazil  aGestation period  aLactation  aPuberty  aSex ratio  aSheep  aSomali (goat breed)  aFertilidade animal  aLactação  aOvino  aPrenhez  aReprodução animal  aBrasil  aFertility  aGestation  aNordeste  aNortheast  aProporção sexual  aPuberdade  aRaça Somalis brasileira1 aRIERA, G. S.1 aFIGUEIREDO, E. A. P. de1 aNUNES, J. F.  tPesquisa Agropecuária Brasileira, Brasília, DFgv. 17, n. 12, p. 1795-1803, 1982.