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首页> 外文期刊>Journal of dairy research >The impact of crossbreeding Egyptian and Italian buffalo on milk yield and composition under subtropical environmental conditions
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The impact of crossbreeding Egyptian and Italian buffalo on milk yield and composition under subtropical environmental conditions

机译：亚热带环境条件下埃及和意大利野牛杂交对牛奶产量和成分的影响

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摘要

Buffalo are the second most valuable species in the world for milk production and their milk prices have been based on fat and protein composition. The aim of the paper was to compare the milk yield and composition of pure Egyptian buffalo (EB) and their crosses with the Italian buffalo and to investigate the impact of temperature humidity index (THI) on milk yield and composition under subtropical stressful conditions. 516 lactating buffalo were used (152 EB; 1 76 F, crosses 50% EB and 50% Italian buffalo and 188 back cross (BC) 75% EB and 25% Italian buffalo). The results revealed that, milk yield (5.79 and 10.32%) and peak yield (6.36 and 7.67%) were significantly higher in F_1 and BC than in EB, respectively. BC had 7.74 and 3.67% significantly higher daily yield when compared with EB and F_1, respectively. EB were robust in the hot condition as the only reduction was in the peak of milk production from 15.02 in low THI to 13.72 kg in high THI, but fat and total solids%, were increased from 5.61 and 16.31 THI in low to 7.01 and 17.59 in high THI, respectively. BC was similar to some extent to EB as their milk was similar to EB under sever hot climate conditions (2331.92 and 2327.50 kg, respectively). A statistically significant reduction in the average daily milk yields was detected only in F_1 from 10.33 to 8.38 kg in low and high THI level, respectively. The current study showed that BC produced a higher milk with higher daily average milk yield and peak yield with some evidence of robust under sever hot condition which were approximately similar to EB. Thus, it is recommended to encourage the producers to increase the number of BC animals in their farm for improving the milk production to fulfil the demand of Egyptian markets.
机译：水牛是世界第二大产奶量最高的品种，其牛奶价格基于脂肪和蛋白质成分。本文旨在比较纯埃及水牛（EB）及其与意大利水牛的杂交的产奶量和成分，并研究在亚热带压力条件下温度湿度指数（THI）对产奶量和成分的影响。使用了516个哺乳水牛（152 EB； 1 76 F，杂交50％EB和50％意大利水牛和188个回交（BC）75％EB和25％意大利水牛）。结果表明，F_1和BC的牛奶产量（5.79和10.32％）和峰值产量（6.36和7.67％）分别显着高于EB。与EB和F_1相比，BC的日产量分别高出7.74和3.67％。 EB在高温条件下表现强劲，因为唯一的减少是牛奶产量的峰值从低THI的15.02降至高THI的13.72 kg，但是脂肪和总固体含量从低THI的5.61和16.31 THI增加到了7.01和17.59在高THI分别。在严重炎热的气候条件下（分别为2331.92和2327.50千克），BC与EB在某种程度上相似，因为它们的牛奶与EB相似。仅在F_1中，在低和高THI水平下，F_1的平均每日产奶量才从统计学上显着降低，从10.33 kg降低到8.38 kg。目前的研究表明，卑诗省生产的牛奶较高，每日平均牛奶产量和峰值产量更高，并且有证据表明在严酷的高温条件下，牛奶具有很强的抵抗力，与EB相似。因此，建议鼓励生产者增加其农场中的不列颠哥伦比亚动物数量，以提高牛奶产量以满足埃及市场的需求。

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  • 来源
    《Journal of dairy research》 |2016年第2期|196-201|共6页
  • 作者

    Mohammed AF Nasr;

  • 作者单位

    Department of Animal Wealth Development, Faculty of Veterinary Medicine, Zagazig University, Egypt;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Egyptian buffalo; crosses; THI; milk yield; milk composition;

    机译：埃及水牛;十字架THI;牛奶产量牛奶成分;

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