乳宁散对隐性乳房炎奶牛产奶性能影响和防治效果的评价
张泽岩 , 张康 , 王磊 , 张小丽 , 马小军 , 李建喜
甘肃农业大学学报 ›› 2023, Vol. 58 ›› Issue (05) : 32 -41.
乳宁散对隐性乳房炎奶牛产奶性能影响和防治效果的评价
Effects of Ru Ning Powder on milking performance and subclinical mastitis prevention and treatment of dairy cows
目的 通过测定隐性乳房炎奶牛的产奶性能、血液理化和抗氧化能力等指标评价乳宁散在奶牛TMR全日粮中添加对隐性乳房炎的防治作用。 方法 选取400头高产奶牛,分为四组,每组100头牛,分别为乳宁散添加组(饲粮中每日添加乳宁散140 g/头牛,患隐性乳房炎),微生态制剂组(饲粮中每日添加微生态制剂100 g/头牛,患隐性乳房炎),对照组(正常日粮,患隐性乳房炎)及空白组(正常日粮,不患隐性乳房炎),试验期30 d。投药前一天和添加第30天检测4组奶牛的体细胞数和产奶性能;每组选取8头奶牛采集外周血及乳汁,分析比较血液理化、抗氧化(SOD、GSH-PX和T-AOC等)指标和促炎因子指标(IL-1、IL-6、IL-8和TNF-α)。 结果 乳宁散添加组奶牛的产奶性能、血液理化指标和对照组相比与空白组相比均无显著性(P>0.05),乳宁散组与空白组的体细胞数和对照组相比差异显著(P<0.05),乳宁散组抗氧化能力和对照组与空白组相比有显著性差异(P<0.05),与微生态制剂组结果一致;乳宁散组IL-1、IL-6、IL-8和TNF-α表达量对对照组有极显著性差异(P<0.01),降低幅度高于微生态制剂组。 结论 饲料中添加乳宁散对奶牛的产奶及健康均无影响,可有效防治隐性乳房炎。
Objective The study aimed to evaluate the effectiveness of Ru Ning Powder addition to TMR diet in prevention and treatment of dairy cow’s subclinical mastitis by measuring their milking performance,blood physicochemical indexes and antioxidant capacity. Method Four hundred high-yielding cows were employed,and they was divided into four groups as follows:Ru Ning Powder addition group (140 g Ru Ning Powder were added to the feed for each cow per day,suffering from subclinical mastitis),microecological preparation addition group (100g microecological preparation were added to the feed for each cow per day,suffering from subclinical mastitis),control group (normal feeding,suffering from subclinical mastitis) and blank group (normal feeding,no subclinical mastitis).The period of trial was 30 days. The number of somatic cell and milking performance of four groups of cows were determined on the day before dosing and on the 30th day after dosing.Eight cows in each group were selected for blood collection,milk collection,and for analyzing serum metabolism,antioxidant indicators (SOD,GSH-PX,T-AOC and more) and pro-inflammatory factor indicators (IL-1、IL-6、IL-8 and TNF-α). Result Ru Ning Powder addition groups had no significant differences in milking performance and serum metabolism with the control and blank groups(P>0.05).The somatic cell counts of both Ru Ning Powder addition group and blank group was significantly different from the control group(P<0.05).The antioxidant capacity of Ru Ning Powder group was significantly different from the control and blank groups (P<0.05),while it did not significantly differ with microecological group. In Ru Ning Powder group,the contents of IL-1、IL-6、IL-8 and TNF-α were significantly different with the control group (P<0.01),and the decreasing amplitude was higher than that of the microecological group. Conclusion The results showed that Ru Ning Powder addition to the feed could effectively prevent and cure subclinical mastitis of dairy cows,with no effects on milking and health of them.
cows / subclinical mastitis / Ru Ning Powder / antioxidant / pro-inflammatory factor
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