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首页> 外文期刊>Tropical Animal Health and Production >A comparison of milk production from Holstein Friesian and Jersey cattle breeds under hot climate of Oman
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A comparison of milk production from Holstein Friesian and Jersey cattle breeds under hot climate of Oman

机译：霍尔斯坦弗里斯和泽西牛种群的牛奶产量比较阿曼气候下

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摘要

Data of milk production and performance under Oman climatic conditions are limited. The current study presents a 9-year analysis of daily milk performance of Holstein and Jersey cattle breeds born and raised in Oman and fed similar diets of concentrate and Rhodes grass hay. Data on the daily cow's milk production, during the entire lactation period for nine consecutive milking years between 2009 and 2018, were collected. The data was introduced to a linear mixed model and was analyzed to evaluate the breed variations in milk production across lactations and across years. Holstein Friesian (HF) cows had significantly (P < 0.001) higher daily milk production of 17.6 +/- 0.4 kg/cow/day compared to 11.7 +/- 0.8 kg/cow/day for Jersey cows. Across years, we observed a gradual annual improvement in total milk production in both HF and Jersey breeds of 5% and 6%, respectively. The highest daily milk production was in the third and fourth lactations for HF cows and in the second and third lactations for Jersey cows. In a region where much of the expected demand in milk will be met by exotic breeds and importation, our results provide an insight into the performance of temperate breeds in hot and arid climatic conditions. As such, our results shall be useful for dairy producers seeking to maximize milk production under such conditions.
机译：阿曼气候条件下的牛奶生产和性能的数据有限。目前的研究提出了9年来，对阿曼出生和饲养的霍尔斯坦和泽西牛种品的日常牛奶表演分析，并喂养了相似的浓缩物和罗得岛草干草。收集了关于每日牛奶产量的数据，在2009年至2018年期间的九个连续挤奶多年的整个哺乳期间。将数据引入直线混合模型，并分析以评估乳液中牛奶产量的品种变化和多年。 Holstein Friesian（HF）奶牛显着（P <0.001）每日牛奶产量较高为17.6 +/- 0.4公斤/牛/天，而泽西奶牛的奶牛/奶牛/天为11.7 +/- 0.8公斤/天。在多年来，我们观察了分别为5％和6％的HF和泽西品种的牛奶产量逐步改善。最高的每日牛奶产量都是HF奶牛的第三和第四次哺乳动物，并在泽西奶牛的第二和第三个哺乳期。在一个地区，将通过异国情调的品种和进口符合牛奶中大部分预期需求，我们的结果介绍了在热和干旱气候条件下的温带繁殖的性能。因此，我们的结果对于寻求在这种条件下寻求最大化牛奶产量的乳制品生产商有用。

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