首页> 外文期刊>Indian Journal of Animal Production and Management >FACTORS INFLUENCING SOME PERFORMANCE TRAITS OF GANGATIRI COWS
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FACTORS INFLUENCING SOME PERFORMANCE TRAITS OF GANGATIRI COWS

机译:影响冈加蒂里牛某些性状的因素

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摘要

Five hundred thirty five first six lactation records of 94 Gangatiri cows maintained at Government Livestockcum Agricultural Farm Arazilines, Varanasi spread over a period of 28 years (1971 to 1998) were analysedto assess the influence of period, season and parity on some performance traits. The overall least squaremeans for different performance traits were: age at puberty (AP) 33.83 +- .39 months, age at first calving(AFC) 43.17+-0.38 months, service period (SP) 136.32 +- 7.77 days, calving interval (Cl) 411.46 +- 17.17 days,lactation length (LL) 259.96 +- 4.96 days, dry period (DP) 151.44 +- 6.07 days, lactation milk yield (LMY)1138.88 +- 30.42 kg, 305 days /less days milk yield (305 DY) 1121.40 +- 29.22 kg and peak yield (PY) 6.92+-0.12 kg . Period had highly significant (P< 0.01) effect on AP, AFC, Cl and on SP (P< 0.05). Similarlyseason also had significant (P< 0.01) effect on AP, AFC and SP. All the traits except LL and LMY wereinfluenced significantly (P< 0.01) by parity also.
机译:分析了分布在28年(1971年至1998年)的瓦拉纳西政府畜牧和农业农场Arazilines饲养的94头Gangatiri牛的535头六次泌乳记录,以评估时期,季节和均价对某些性能特征的影响。不同表现特征的总体最小二乘均值是:青春期(AP)33.83±0.39个月,第一次产犊(AFC)43.17±0.38个月,服务期(SP)136.32±7.77天,产犊间隔( Cl)411.46 +-17.17天,哺乳期(LL)259.96 +-4.96天,干燥期(DP)151.44 +-6.07天,哺乳期产奶量(LMY)1138.88 +-30.42 kg,305天/更少天产奶量( 305 DY)1121.40 +-29.22 kg和峰值产量(PY)6.92 + -0.12 kg。时期对AP,AFC,Cl和SP具有极显着(P <0.01)的影响(P <0.05)。同样,季节对AP,AFC和SP也有显着(P <0.01)影响。平价对除LL和LMY以外的所有性状均具有显着影响(P <0.01)。

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