Lactation performance and milk constituents of Umblachery breed of cattle (Bos indicus) in its native coastal ecology of Tamilnadu, India

摘要

AstudywasconductedtoevaluatethelactationperformanceofUmblacherycattleundersmallholdermanagementsysteminitsbreedingtract.Milkrecordingwasmadeatmonthlyintervalsin435cowsin13randomlyselectedvillages.Theaveragedailypartialmilkyieldwas2058#177;18ganditrangedfrom400to4750g.Thetotalestimatedpartialmilkyieldforthelactationwas494kg.Theaverageofmilkfatpercentagewas4.94#177;0.06andtheaveragesolids-not-fatpercentagewas7.80#177;0.03whichrangedfrom7.73to8.17.Themilkyieldwashighlyvariablewithacoefficientofvariationof35%.Thissuggeststhepossibilityofimprovingtheirdailyproductionbygeneticmeans.