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首页> 外文期刊>Environmental Science and Pollution Research >The potential effect of temperature-humidity index on productive and reproductive performance of buffaloes with different genotypes under hot conditions
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The potential effect of temperature-humidity index on productive and reproductive performance of buffaloes with different genotypes under hot conditions

机译：温度湿度指数对热条件下不同基因型的水牛生产性和繁殖性能的潜在影响

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摘要

The current study was aimed to investigate the impact of THI on productive and reproductive indices of PE and F-1 crosses (50% PE and 50% Italian buffaloes) and back crosses (BC) (75% PE and 25% Italian buffaloes) under hot conditions. In this study, 8385 records used PE (1914, 1518, and 1737), F-1 (387, 447, and 657), and BC (495, 585, and 645) for low, medium, and high THI, respectively. The high THI reduced the conception rate after first insemination in PE, F-1, and BC ((odds ratio, OR) = 1.187, P = 0.007; 2.361, < 0.0001 and 1.603, < 0.0001, respectively) when compared with low THI. But, stillbirth and calving condition were not significantly influenced by different THI levels in BC and F-1. BC was more bearable to the harsh environment; they possessed the highest incidence of conception after first insemination (72.70, 72.60, and 62.40%), producing live calves (98.50, 100, and 99.40%) with easy calving condition (98.50, 100, and 99.40%) when compared to PE and F-1 at different levels of THI, respectively. The average daily milk yield and peak of milk production were decreased in PE (4.02 and 5.12%), BC (13.33 and 10.95%), and F-1 (25.29 and 12.20%) from low to high THI. However, BC revealed no significant changes in days open, dry period, calving interval, gestation length, service per conception, and the first service post-partum at different levels of THI when compared with PE and F-1. Therefore, rearing BC is recommended for improving buffalo productive and reproductive performance under hot conditions.
机译：目前的研究旨在调查THI对PE和F-1交叉（50％PE和50％意大利水牛）和背斜盘（BC）（75％PE和25％意大利水牛）的影响的影响热情。在本研究中，8385次通过PE（1914,1518和1737），F-1（387,447和657）和BC（495,585和645）的低，培养基和高Thi。在PE，F-1和BC（（差距比，或）= 1.187，P = 0.007; 2.361，<0.0001和1.6S3，<0.000分别，分别与低温相比，降低了概念率。但是，BC和F-1的不同THI水平没有显着影响死养和产犊状况。 BC对恶劣的环境更有耐受;在与PE和PE相比，它们在第一次授精后（72.70,72.60和62.40％）具有最高的概念发生率（72.70,72.60和62.40％），产生易切割条件（98.50,100和99.40％）。 F-1分别在不同水平的THI。 PE（4.02和5.12％），Bc（13.33和10.95％），Bc（13.33和10.95％），Bc（25.29和12.20％），低至高于高于高，在低至高温下降，牛奶产量和牛奶产量的平均每日牛奶产量和峰值降低。然而，BC在与PE和F-1相比，日期开放，干燥期，Calping间隔，妊娠长度，妊娠长度，服务和Partum的第一个服务后的第一个服务后的Part-Partum。因此，建议在热条件下提高水牛生产和生殖性能的饲养。

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