Impact of dextran sulphate adjuentated S. aureus vaccine against the control of mastitis in lactating dairy buffaloes in Pakistan

IF 0.2 4区 农林科学 Q4 AGRICULTURE, DAIRY & ANIMAL SCIENCE Buffalo Bulletin Pub Date : 2023-12-31 DOI:10.56825/bufbu.2023.4244269
Muhammad Kashif, Amar Nasir, Muhammad Rizwan, A. Hussain, Uasman Waheed, Aziz -ur-Rehman, A. Sikandar, Khizer Muhammad Khizer Aziz
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Abstract

The present study was conducted to evaluate two S. aureus vaccines in 100 mastitis free lactating buffaloes, dividing into 2 equal groups (B1, B2). The animals of B1 and B2 were administered with 2 shots of live attenuated and Dextran sulphate adjuvanted S. aureus vaccine at 15 days sequentially. The evaluation was done with different parameters i.e., serum and whey antibody titers, somatic cell count, milk fat %, milk protein, milk yield, vaccine efficacy, cost-benefit analysis, and colony count. There was a peak of geometric mean antibody titer 291 and 58 in LSAV while its climax 363 and 90 in DSAV at 2 and 6 months of study. In whey this level almost remained the same in both groups. In B1 and B2, somatic cell count kept on decreasing from day zero to the end of study. There was a non-significant difference in milk yield and fat percentage between the 2 groups. Milk protein concentration was significantly different between these groups and was better in B1 than B2. The surf field mastitis test-based quarter point prevalence decreased at 180 days in LASV and DSAV. In California mastitis test based, a significant decreased value was shown in both groups. Pre-vaccination and post-vaccination colony count of S. aureus was more in LSAV than in DSAV. Moreover, the preventative efficacy and cost benefit ratio of DSAV was more excellent as compared to LSAV.
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硫酸葡聚糖佐剂金黄色葡萄球菌疫苗对控制巴基斯坦哺乳水牛乳腺炎的影响
本研究以 100 头无乳腺炎的泌乳水牛为对象,分为两个等量组(B1、B2),对两种金黄色葡萄球菌疫苗进行了评估。B1 和 B2 组的动物在 15 天内依次接种两针金黄色葡萄球菌减毒活疫苗和葡聚糖硫酸盐佐剂疫苗。对不同参数进行了评估,即血清和乳清抗体滴度、体细胞数、乳脂率、乳蛋白、产奶量、疫苗效力、成本效益分析和菌落数。在研究的 2 个月和 6 个月期间,LSAV 的几何平均抗体滴度分别达到峰值 291 和 58,而 DSAV 的抗体滴度分别达到峰值 363 和 90。在乳清中,两组的抗体水平几乎保持不变。在 B1 和 B2 组中,体细胞数从零天到研究结束一直在下降。两组的产奶量和脂肪率差异不显著。牛奶蛋白质浓度在这两个组之间存在显著差异,B1 组优于 B2 组。在 LASV 和 DSAV 中,基于冲浪现场乳腺炎测试的四分之一点患病率在 180 天时有所下降。在基于加利福尼亚乳腺炎测试的结果中,两组的数值均有显著下降。接种前和接种后的金黄色葡萄球菌菌落数,LSAV 均高于 DSAV。此外,与 LSAV 相比,DSAV 的预防效果和成本效益比更为出色。
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来源期刊
Buffalo Bulletin
Buffalo Bulletin AGRICULTURE, DAIRY & ANIMAL SCIENCE-
CiteScore
0.50
自引率
0.00%
发文量
53
审稿时长
>12 weeks
期刊介绍: Buffalo Bulletin is published quarterly in January-March, April-June, July-September and October-December. Contributions on any aspect of research or development, progress reports of projects and news on buffalo will be considered for publication in the bulletin.
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