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Evaluating the effectiveness of two bovine mastitis vaccines and their influences on oxidant and antioxidant capacities of milk

机译：评估两只牛乳腺炎疫苗的有效性及其对牛奶氧化剂和抗氧化能力的影响

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The aim of the current study was to investigate the efficacy of two commercial mastitis vaccines (Startvac (R) and Mastivac (R)) and their influence on oxidant and antioxidant capacities of milk samples in a dairy farm. A total of 165 Holstein dairy cows were recruited into the study and were divided into Startvac (R), Mastivac (R), and control groups. The effects on the incidence and severity of clinical mastitis cases, duration of treatment, infection status, bacteriologic culture, somatic cell count, 5-thio-2-nitrobenzoic acid assay and ferric reducing antioxidant power assay, incidence of metritis and endometritis, and milk yield were evaluated within the first 90 days of lactation. The incidence of clinical mastitis was not significantly different among groups. The mean SCCs during the first, second, and third months of lactation did not differ significantly. The percentage of cured cows did not differ significantly. TNB and FRAP assays were used to know whether or not vaccination against mastitis has an effect on oxidant and antioxidant capacity of milk samples, which did not differ significantly. In conclusion, we observed no significant difference in the abovementioned variables. However, it is possible that applying mastitis vaccines within the specific conditions may have positive effects considering the results of previous studies.
机译：目前研究的目的是探讨两种商业乳腺炎疫苗（Startvac（R）和Mastivac（R）的功效及其对奶牛场中牛奶样品氧化剂和抗氧化能力的影响。共招募了165名荷斯坦奶牛队进入该研究，分为StartVac（R），Mastivac（R）和对照组。对临床乳房疾病发病率和严重程度的影响，治疗持续时间，感染状态，细菌学培养，体细胞计数，5-硫代-2-硝基苯甲酸测定和亚铁减少抗氧化功率测定，细胞炎和子宫内膜炎的发生率，以及牛奶在哺乳期的前90天内评估产量。临床乳腺炎的发生率在群体中没有显着差异。第一，第二个和第三个月的哺乳期间的平均SCC没有显着差异。治愈奶牛的百分比没有显着差异。使用TNB和FRAP测定来了解是否对乳腺炎的疫苗接种有对氧化剂和牛奶样品的抗氧化能力产生显着差异。总之，我们观察到上述变量没有显着差异。然而，考虑到先前研究的结果，可以在特定条件下施加乳腺炎疫苗可能具有积极影响。

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