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首页> 外文期刊>International journal of engineering research and industrial applications >THE INFLUENCE OF GROWTH RATE ON PRODUCTIVE CHARACTERISTICS AT DAIRY HEIFERS FED WITH MATERNAL WHOLE MILK AND MILK REPLACER
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THE INFLUENCE OF GROWTH RATE ON PRODUCTIVE CHARACTERISTICS AT DAIRY HEIFERS FED WITH MATERNAL WHOLE MILK AND MILK REPLACER

机译：生长速度对全脂牛奶和代乳品喂养的奶牛场生产特性的影响

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Producing high quality heifers that will express their genetic potential for milk production and allow optimal duration in the milking herd (longevity) is a priority objective to balance the investment of 15-20% of total costs of milk production with a net return to the dairy. The primary accent of this research work is to study the nutrition of female calves with whole milk in the first 90 days after the birth, and could be applied in the rearing methods in the management of the herd of replacement heifers. For this aim we were used fourteen female calves of Holstein-Friesian breed and divided it into two groups named as; experimental group A-7 and control group B-7 (calves fed on colostral milk during the first seven days, and later fed according the standard routines). T-test we have calculated by statistical analysis and its values were showing important diferences between the parameters of two groups of heifers (group A and group B) on a level of p ＜ 0.05 and p ＜ 0.01. The results referring to the weight of heifers (group A) when calving and lactation showed high dependence, high degree of correlation (r = 0.79) by the interrelation of body mass during the sixth measurement and average daily milk yield in the first month of lactation - of group A. Finally, we have reached a degree of correlation of (r =0.85) which confirms that calving weight and the increased growth rate have a positive influence over the milk yield in the period of first lactation which already confirms the established results on a global level.
机译：优先生产能够在牛奶生产总成本的15-20％的投资与乳制品净收益之间取得平衡的优先目标，就是生产出高质量的小母牛，这些母牛可以表达出牛奶生产的遗传潜力并在奶牛群中拥有最佳的持续时间（长寿）。 。这项研究工作的主要重点是在出生后的前90天研究全脂牛奶对雌性小牛的营养状况，并可将其应用于饲养替代小母牛的饲养方法中。为了这个目的，我们使用了荷斯坦-弗里斯兰品种的14只雌性小牛，并将其分为两组：实验组A-7和对照组B-7（犊牛在头7天内饲喂初乳，之后按照标准程序饲喂）。我们通过统计分析计算出的T检验，其值显示两组小母牛（A组和B组）的参数在p ＜0.05和p ＜0.01上的重要差异。结果涉及犊牛和泌乳时小母牛的体重（A组），显示出高度依赖性，第六次测量期间体重之间的相关性与高度相关性（r = 0.79），以及泌乳第一个月的每日平均产奶量最后，我们已达到（r = 0.85）的相关程度，这证实了犊牛体重和增长的增长率对第一次泌乳期间的产奶量有积极影响，这已经证实了既定结果在全球范围内。

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