Vasconcellos, B. F.Tonhati, Humberto [UNESP]2014-05-202014-05-201998-08-01Journal of Animal Breeding and Genetics-zeitschrift Fur Tierzuchtung Und Zuchtungsbiologie. Berlin: Blackwell Wissenschafts-verlag Gmbh, v. 115, n. 4, p. 299-306, 1998.0931-2668http://hdl.handle.net/11449/35240Data concerning genealogy, milk yield, lactation length, caving interval and lac at first calving, obtained from Murrah buffaloes on a farm In São Paulo state, Brazil, were studied in order to determine the presence of inbreeding in the herd and to evaluate its effects as well as the effects of some environmental factors on productive and reproductive traits. The mean inbreeding coefficient estimated for 2414 animals, born from 1965 to 1995 was 2.94%. of these animals, 47% mere considered inbred with a mean inbreeding coefficient equal 6.25%. Milk production, lactation length, calving interval and age at first calving averaged 1493.3 +/- 60.7 kg, 271.0 +/- 37.3 days, 385.0 +/- 53.4 days and 33.05 +/- 6.05 months, respectively. Among all four traits, only lactation length was affected by inbreeding.299-306engArtigo10.1111/j.1439-0388.1998.tb00350.xWOS:000075241200004Acesso restrito7445254960858159