畜牧与兽医2025，Vol.57Issue(6)：114-120,7.
真胃左方变位对奶牛产奶量、反刍及活动量的影响
Effects of left displacement of abomasum on milk yield,rumination time and activity level of dairy cows
摘要
Abstract
The aim of this paper was to investigate the effects of left displacement of abomasum on milk yield,rumination time and activity level of dairy cows.By collecting disease incidence records and data on daily milk yield,daily rumination time and daily activity of 1 580 lac-tating dairy cows from December 2022 to December 2023 in a farm in Shandong,the effects of parities,lactation stages,measured seasons,calving seasons and the presence or absence of left displacement of abomasum on daily milk yield,daily rumination time and daily activity of the cows were analyzed using the multivariate variance method.The results showed that parities,lactation stages,measured seasons,calving seasons and left displacement of abomasum had highly significant effects on daily milk yield,daily rumination time and daily activity(P＜0.01)of the cows;the daily milk yield,daily rumination time and daily activity of the cows with left displacement of abomasum in different parities,lactation stages and measured seasons were highly significant lower than those of the healthy cows(P＜0.01);and the daily milk yield,daily rumination time and daily activity of the cows with left displacement of abomasum calved in summer,autumn and winter were lower than those of the healthy cows(P＜0.01).However,the cows with left displacement of abomasum at spring calving had a highly signifi-cant effect on daily milk yield(P＜0.01)only,and no significant effect on their daily rumination time and daily activity(P＞0.05).In con-clusion,the left displacement of abomasum had a greater effect on daily milk yield,daily rumination time and daily activity of healthy cows;and the daily milk yield,daily rumination and daily activity of the affected cows were significantly lower.The results of this study provided reference for the prevention and treatment of the left displacement of abomasum.关键词
真胃左方变位/产奶量/反刍时间/活动量Key words
left displacement of abomasum/milk yield/rumination time/activity level分类
农业科技引用本文复制引用
常梓翊,华而实,张琬婷,张娜,王子晨,王延茹,姚毅扬,毛永江..真胃左方变位对奶牛产奶量、反刍及活动量的影响[J].畜牧与兽医,2025,57(6):114-120,7.基金项目
国家农业重大科技项目(NK20221201) （NK20221201）
