[Objective] To investigate the difference of milk production performance of dairy cows at different feeding levels during early lactation. [Methods] In this experiment, 45 healthy Holstein cattle in early lactation period with similar body condition and parity were selected according to low feed intake group, medium feed intake group and high feed intake group for 7 days of pre-test and 28 days of formal test. [Results] Compared with low feed intake group, the average daily feed intake of cows in medium feed intake group and high feed intake group was significantly increased (P<0.05). The feeding speed, milk yield and 4% standard milk yield of dairy cows in high feed intake group were significantly increased (P<0.05), and the milk urea nitrogen content was significantly decreased (P<0.05). Rumen pH, ammonia nitrogen, acetic acid, propionic acid and total volatile fatty acid contents of cows in medium feed intake group and high feed intake group were significantly increased (P<0.05). Serum albumin and total protein contents in medium feed intake group and high feed intake group were significantly increased (P<0.05); Serum urea nitrogen content in high feed intake group was significantly increased (P<0.05). [Conclusion] Dairy cows in the early lactation period have different milk production performance under different feeding levels. The higher the feed intake, the better the milk production performance, the stronger the rumen fermentation function and the better body condition.
LI Falan
. Comparison of Milk Production Performance of Cows at Different Feeding Levels during Early Lactation[J]. China Dairy, 2024
, 0(2)
: 24
-28
.
DOI: 10.12377/1671-4393.24.02.05
[1] 丁荣荣. 猪采食行为及饲料利用效率性状的精细化处理及主效QTL鉴别[D].广州:华南农业大学,2023.
[2] 陈冬. 家猪繁殖性状和采食行为的表型组学研究及其初步遗传解析[D]. 南昌:江西农业大学,2022.
[3] Durunna O N,Wang Z,Basarab J A,et al.Phenotypic and genetic relationships among feeding behavior traits,feed intake,and residual feed intake in steers fed grower and finisher diets[J]. Journal of Animal Science,2011,89(11):3401-3409.
[4] Pires BV,Reolon H G,Abduch N G,et al.Effects of feeding and drinking behavior on performance and carcass traits in beef cattle[J]. Animals(Basel),2022,12(22):3196.
[5] 蒲万霞,魏云霞,孟晓琴,等. 靛酚蓝-分光光度法测定胃肠道内容物中氨态氮含量研究[J]. 甘肃农业大学学报,2008,43(5):13-17.
[6] 许丽卫,耿梅梅,陈闻,等. 气相色谱-质谱联用法测定瘤胃液中的甲酸和其他6 种挥发性脂肪酸[J]. 动物营养学报,2021,33(2):1145-1152.
[7] 张玉莹,潘浩,王通,等. 牦牛泌乳期能量和蛋白质维持需要量的研究[J]. 动物营养学报,2022,34(3):1655-1666.
[8] Olson C A,Li C,Block H,et al.Phenotypic and genetic correlations of beef replacement heifer feeding behaviour,feed intake and feed efficiency with cow performance and lifetime productivity[J]. Journal of Animal Breeding and Genetics,2021,138(3):300-313.
[9] 李烨青,曾涵芳,王泽栋,等. 泌乳前期奶牛在不同采食水平下产奶性能及血清指标的差异比较[J]. 畜牧与兽医,2019,51(6):36-42.
[10] 陈丽丽,芦娜,马毅. 围产期饲粮中添加外源能量饲料对奶牛泌乳性能的影响[J]. 饲料研究,2022,45(1):1-4.
[11] 高九昱. 杜洛克猪采食行为性状与其肠道菌群的相关性研究[D]. 南宁:广西大学,2022.
[12] 李晨,Anum Ali Ahmad,张剑搏,等. 冷季牦牛和黄牛采食行为、血清生化指标与瘤胃发酵参数的比较研究[J]. 草业学报,2021,30(6):162-169.
[13] 张颖楠,李世关,刘书杰,等. 不同饲喂水平对断奶牦牛犊牛生长性能、瘤胃发酵及微生物区系的影响[J]. 饲料工业,2023,44(6):38-45.
[14] 马丽娜,高总元,高海慧,等. 饲粮蛋白水平对断奶犊牛生长性能、血清指标、瘤胃发酵参数及微生物组成的影响[J]. 饲料研究,2023(17):5-11.
[15] 张博,潘浩,刘书杰,等. 饲喂水平对泌乳期牦牛生产性能、瘤胃发酵和血清生化指标的影响[J]. 饲料研究,2021,44(15):11-15.
[16] 王音,张晓涵,潘浩,等. 不同饲喂水平对妊娠期牦牛瘤胃发酵、血清生化指标和生殖激素的影响[J]. 饲料研究,2021,44(17):5-9.
