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首页> 外文期刊>Tropical Animal Health and Production >Factors influencing the prevalence of subclinical mastitis in lactating dromedary camels in Riyadh Region, Saudi Arabia.
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Factors influencing the prevalence of subclinical mastitis in lactating dromedary camels in Riyadh Region, Saudi Arabia.

机译：沙特阿拉伯利雅得地区泌乳单峰骆驼中亚临床乳腺炎患病率的影响因素。

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The purpose of this study was to determine the prevalence of subclinical mastitis in camels in Riyadh, Saudi Arabia and the factors influencing its incidence. A total of 740 quarter milk samples were collected from 47 camel herds belonging to Majahim, Maghatir, Shu'l, and Sufer breeds. California mastitis test (CMT) was used as a screening test for subclinical mastitis. Samples giving negative or trace CMT scores (0) were assigned to healthy quarters, while those giving positive scores of 1+ to 3+ were assigned to subclinically affected quarters. Logistic regression was used to assess the association of breed, parity, and stage of lactation with the prevalence of subclinical mastitis. Milk fat, protein, lactose, solid nonfat percentages and Na, Ca, and K concentrations were compared in CMT-positive versus healthy quarters. One third (33%) of tested quarters had subclinical mastitis based on CMT. The estimated probability of subclinical mastitis with the combined effects of breed, parity, and stage of lactation ranged from 15.8% to 54.6%. The risk of subclinical mastitis increased significantly with parity and with the early stage of lactation. The Shu'l breed had significantly higher prevalence of subclinical mastitis than other breeds. Significant decreases in protein, lactose, and solid nonfat, Ca and K concentrations and increase in Na concentrations were associated with subclinical mastitis. In conclusion, subclinical mastitis is prevalent in Saudi camels, and its incidence is influenced by breed, parity, and stage of lactation.
机译：这项研究的目的是确定沙特阿拉伯利雅得的骆驼亚临床乳腺炎的患病率及其影响因素。从 Majahim ， Maghatir ， Shu'l 和 Sufer < / i>繁殖。加利福尼亚乳腺炎测试（CMT）被用作亚临床乳腺炎的筛查测试。 CMT得分为阴性或痕迹（0）的样本被分配到健康区，而阳性分数为1+到3+的样本被分配到亚临床受影响的区。 Logistic回归用于评估品种，胎次和泌乳阶段与亚临床乳腺炎患病率之间的关系。比较了CMT阳性人群和健康人群的牛奶脂肪，蛋白质，乳糖，固体脱脂百分比以及Na，Ca和K浓度。三分之一（33％）的受检者患有基于CMT的亚临床乳腺炎。估计的亚临床乳腺炎的可能性与品种，胎次和泌乳阶段的综合影响范围为15.8％至54.6％。随着胎龄的增加和哺乳的早期，亚临床乳腺炎的风险显着增加。舒尔犬的亚临床乳腺炎患病率明显高于其他犬种。蛋白质，乳糖和固体脱脂，Ca和K浓度的显着降低以及Na浓度的升高与亚临床乳腺炎有关。总之，亚临床乳腺炎在沙特骆驼中很普遍，其发病率受哺乳的品种，胎次和分期影响。

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