01391nam a2200229 a 450000100080000000500110000800800410001902000150006010000180007524500830009326001620017652006720033865000110101065000140102165000120103565000130104765000280106065000190108865300210110770000170112870000160114520400292025-01-29       2000    bl uuuu     u00u1 u    #d  a28414803801 aRICORDEAU, G.  aEffects of the alpha S1 casein locus on dairy performances of Poitevine goats.  aIn: INTERNATIONAL CONFERENCE ON GOATS, 7., 2000, Tours, Poitiers, France. Proceedings... Paris: INRA: IGA: Institut de Elevage, 2000. v. 1, p. 249-251.c2000  aThe effects of -casein alleles A, B1, B2, B4, E and F on performances of Poitevine goats were estimated using data from 614 goats (1704 lactations) in 8 herds recorded between 1988 and 1995. The herd, year, lactation number and casein genotype were statistically significant for the all studied variables. For true protein content, weighted contrats indicate that and a significant superiority over the B2 and B4 alleles. The A and B1 alleles have a favorable effect on fat content and an unfavorable effect on milk yield but and fat yield. The B1 allele, highly frequent in the Poitevine breed, should be considered in the genetic conservation program of this breed.  aCasein  aGoat milk  aCaprino  aCaseína  aEficiência reprodutiva  aLeite de cabra  aMilk performance1 aMANFREDI, E.1 aAMIGUES, Y.