中国畜牧兽医2018，Vol.45Issue(2)：375-383,9.DOI:10.16431/j.cnki.1671-7236.2018.02.011
北京地区荷斯坦奶牛皮肤褶皱厚度与泌乳性能关系的研究
Study on the Relationship Between the Skinfold Thickness and Lactation Performance of Holstein in Beijing
摘要
Abstract
To identify the factor affecting skinfold thickness and to explore the effects of skinfold thickness on the lactation performance of Holstein,the neck skinfold thickness and rib skinfold thickness were measured using a digital display caliper while the body condition score (BCS) of tested Holstein was evaluated,and Dairy Herd Improvement (DHI) records at the month when skinfold thickness was measured were collected.Finally,records of 2 519 milking cows were used in the analysis.The fixed effect model were used to analyze the effects of parity,farm,measurer,lactation stage and BCS on skinfold thickness,and the model analyzing the effects of skinfold thickness on the milk performance also included the above mentioned fixed effects.The results showed that parity farm,measurer,lactation stage and BCS had extremely significant effects on the skinfold thickness (P＜0.01).The neck skinfold thickness had significant impacts on the daily milk yield and milk fat percentage (P＜0.05),but no significant impacts on milk protein percentage and milk urea nitrogen (P＞0.05),while the rib skinfold thickness did not have significant impact on the milk performance (P＞0.05).The highest milk yield could be derived when the neck skinfold thickness was 7.20 mm and the lowest milk fat percentage could be derived when the neck skinfold thickness was 6.00 mm.This study intensively illustrated the factors affecting the skinfold thickness in different regions of body during the entire lactation period and explored the impacts of skinfold thickness in different regions of body on the lactation performance in Holstein population,which could provide a theory basis for utilizing skinfold thickness to improve the management in dairy farm.关键词
荷斯坦奶牛/皮褶厚/产奶量/乳成分Key words
Holstein/skinfold thickness/milk yield/milk component分类
农业科技引用本文复制引用
娄文琦,李源韬,常瑶,苏义童,黄铭逸,张海亮,董刚辉,李锡智,王雅春..北京地区荷斯坦奶牛皮肤褶皱厚度与泌乳性能关系的研究[J].中国畜牧兽医,2018,45(2):375-383,9.基金项目
现代农业(奶牛)产业技术体系建设专项资金(CARS-36) （奶牛）
长江学者和创新团队发展计划(IRT_15R62) （IRT_15R62）
现代农业产业技术体系北京市奶牛创新团队(BAIC06-2017) （BAIC06-2017）
