家畜生态学报2025，Vol.46Issue(10)：67-72,6.DOI:10.3969/j.issn.1673-1182.2025.10.010
江苏某牧场中国荷斯坦奶牛日反刍时间及影响因素分析
Rumination Duration and Influencing Factors of Chinese Holstein Cows in a Pasture in Jiangsu Province
摘要
Abstract
To find out the factors influencing the rumination duration of dairy cows at a large-scale farm in Jiangsu Province,this study utilized the Afimilk three-generation smart neck collar system.A total of 206,240 daily rumination behavior data and rumination time data across various shifts were collected from Holstein cows at the farm from July 14,2023 to March 31,2024.Using SPSS software,a multifactorial a-nalysis of variance(ANOVA)model was employed to analyze the effects of factors such as parity,lacta-tion month,calving season,measurement season,and daily milk yield level on the daily rumination time of lactating dairy cows.The results showed that parity,lactation month,calving season,measurement season,and daily milk yield level had a significant effect on the daily rumination time of Holstein cows(P＜0.01).Specifically,daily rumination time increased with the increase of parity,with cows of parity 5 and above exhibiting the highest daily rumination time(411.89±1.67 min/d),while first-parity cows had the lowest(396.38±0.49 min/d).The highest daily rumination time was observed in the fourth lactation month(458.67±0.81 min/d),while the lowest was recorded in the ninth lactation month(300.04±1.24 min/d).Holstein cows calved in autumn had significantly higher daily rumination times than those calved in other seasons(412.49±0.42 min/d),with the lowest observed in spring calvers(357.41±1.1 min/d).Additionally,daily rumination time of Holstein cows in spring was significantly higher than in other sea-sons(460.77±0.58 min/d),and daily rumination times in both winter and spring were significantly higher than those in summer and autumn(P＜0.01).When Holstein cows produce more than 50 kg of milk per day,their daily rumination time was significantly higher than at other milk yield levels(470.23±0.73 min/d).A highly significant positive correlation was found between daily milk yield and daily rumination time(P＜0.01),with a correlation coefficient of 0.36.These results provide a reference for precise management of dairy herds based on rumination time in the farm setting.关键词
奶牛/反刍时间/胎次/产犊季节Key words
dairy cows/rumination time/parity/calving time分类
农业科技引用本文复制引用
张娜,毛永江,张琬婷,田雨,葛继文,王永宽,唐义国,梁艳,黄锡霞,杨章平..江苏某牧场中国荷斯坦奶牛日反刍时间及影响因素分析[J].家畜生态学报,2025,46(10):67-72,6.基金项目
国家农业重大科技项目(NK20221201) （NK20221201）
