使用益生菌测定酮病奶牛的生产率

O. I. Shkromada, Y. K. Vlasenko
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引用次数: 0

摘要

高产奶牛由于泌乳量大,产犊后干物质摄入不足,容易出现能量负平衡。这导致体内脂肪和蛋白质的动员,以满足泌乳牛的营养需求。脂肪和蛋白质的动员维持了高水平的非酯化脂肪酸,导致酮体氧化不完全而出现酮病。研究的目的是调查益生菌对酮病奶牛生产率和牛奶质量的影响。研究于 2021 年 10 月至 11 月期间在乌克兰东北部地区的有限责任公司 "Lan "农业公司对荷斯坦奶牛进行。研究发现,产犊后七天后,产犊后组奶牛血液中的酮体水平为 1.0 至 2.1 毫摩尔/升,比对照组高 71.42%至 185.71%。服用益生菌两周后,酮体水平在 0.5 至 1.2 毫摩尔/升之间,比对照组高出 16.65%-100%。在研究的第 28 天,奶牛体内的酮体含量符合生理正常值。患有酮病的奶牛在研究的第 7 天生产率降低了 22.42-336.4%,在第 14 天降低了 11.6-29.35%。在生产力研究中,产犊后第 28 天恢复到健康动物指标的水平为 28-29 公斤/天。同时,微生物和体细胞的含量与生产率有直接关系,在第 28 天,所有实验奶牛的牛奶都适合食用,符合 "额外 "品种的要求。产犊后第一周,酮病奶牛牛奶中乳脂和蛋白质的比例略微失衡,这是酮病的征兆。在研究的第七天,6905号奶牛的乳脂含量超过蛋白质含量32%,6852号奶牛超过蛋白质含量39.25%,6916号奶牛超过蛋白质含量30.34%,7642号奶牛超过蛋白质含量41.17%,6187号奶牛超过蛋白质含量33.62%,2563号奶牛超过蛋白质含量36.40%,3891号奶牛超过蛋白质含量41.63%。在研究结束的第 28 天,所有实验动物的脂肪/蛋白质比率都接近 1:1 的参考水平。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
DETERMINATION OF PRODUCTIVITY OF COWS IN KETOSIS USING PROBIOTICS
High-yielding cows are prone to negative energy balance due to high lactation and insufficient dry matter intake after calving. This leads to the mobilization of fat and protein in the body to meet the nutrient needs of the lactating cow. High levels of nonesterified fatty acids are maintained by fat and protein mobilization, leading to ketosis due to incomplete oxidation of ketone bodies. The purpose of the research was to investigate the effect of probiotics on the productivity of cows and the quality of milk in ketosis. Research was conducted in the period from October to November 2021 on Holstein cows in the limited liability company "Lan" Agricultural Company of the North-Eastern region of Ukraine. It was found that in cows in the post-calving group, seven days after calving, the level of ketone bodies in the blood of the cows ranged from 1.0 to 2.1 mmol/l, which is higher than in the control by 71.42–185.71%. Two weeks after probiotic administration, ketone levels were between 0.5 and 1.2 mmol/L, 16.65–100% higher than controls. On the 28th day of the study, the content of ketone bodies in cows was within the physiological norm. In cows suffering from ketosis, productivity was reduced on the seventh day of research by 22.42–336.4%, on the 14th day by 11.6–29.35%. During the study of productivity, its restoration to the indicators of healthy animals on the 28th day after calving was established at the level of 28-29 kg/day. At the same time, the content of microorganisms and somatic cells had a direct correlation with productivity, and on the 28th day, the milk of all experimental cows was suitable for consumption and corresponded to the "extra" variety. In the first week after calving, the ratio of milk fat and protein in the milk of cows with ketosis was slightly imbalanced, which is a sign of ketosis. On the seventh day of the study, the milk fat level exceeded the protein content in cow 6905 by 32%, in cow 6852 by 39.25%, in cow 6916 by 30.34%, in cow 7642 by 41.17%, in cow 6187 – by 33.62%, in cow 2563 – by 36.40%, in cow 3891 – by 41.63%. At the end of the study on the 28th day, the fat/protein ratio approached the reference level of 1:1 in all experimental animals.
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