Soeharsono Soeharsono, Mulyati Sri, Utama Suzanita, Wurlina Wurlina, Srianto Pudji, Restiadi Tjuk Imam, Mustofa Imam
Department of Veterinary Anatomy, Faculty of Veterinary Medicine, Universitas Airlangga, Kampus C Unair, Jl. Mulyorejo, Surabaya-60115, Indonesia.
Department of Veterinary Reproduction, Faculty of Veterinary Medicine, Universitas Airlangga, Kampus C Unair, Jl. Mulyorejo, Surabaya-60115, Indonesia.
Vet World. 2020 Mar;13(3):471-477. doi: 10.14202/vetworld.2020.471-477. Epub 2020 Mar 13.
This study aimed to develop equations to predict daily milk production (DMP) based on linear body and udder morphometry of Holstein Friesian (HF) dairy cows.
The experiment was conducted on 174 lactating HF dairy cows reared by farmers at different locations under similar conditions. The age, parity, and body condition score of experimental animals were limited to 0.25 of the standard deviation value above or below the average. The average DMP was based on farmers' records. Morphometry components, i.e., body length (BL); chest circumference (CC); front udder height (FUH), rear udder height (RUH); and udder circumference (UC) were directly measured using a tape; meanwhile, body weight (BW) was estimated using the Indonesia Winter formula. The relationship variables of morphometry components (body and udder morphometry) and BW on DMP were analyzed by regression.
The result showed no correlation (p>0.05) between CC and BW on DMP. Meanwhile, DMP obtained linear regression (p<0.05) with the mathematical equation: 1.30+0.11BL; 13.90+0.41FUH; 11.02+0.18RUH; and 3.87+0.16UC.
This study shows that the DMP of dairy cows could be predicted based on their BL and udder morphometry.
本研究旨在基于荷斯坦弗里生（HF）奶牛的线性体尺和乳房形态测量数据，建立预测日产奶量（DMP）的方程。
实验在不同地点由农户饲养的174头泌乳期HF奶牛上进行，饲养条件相似。实验动物的年龄、胎次和体况评分限制在平均值上下标准差0.25范围内。平均DMP基于农户记录。体尺测量指标，即体长（BL）、胸围（CC）、乳房前高（FUH）、乳房后高（RUH）和乳房周长（UC），使用卷尺直接测量；同时，体重（BW）采用印尼冬季公式估算。通过回归分析形态测量指标（身体和乳房形态测量）和BW与DMP之间的关系变量。
结果表明，CC和BW与DMP之间无相关性（p>0.05）。同时，DMP与以下数学方程呈线性回归关系（p<0.05）：1.30 + 0.11BL；13.90 + 0.41FUH；11.02 + 0.18RUH；以及3.87 + 0.16UC。
本研究表明，奶牛的DMP可基于其BL和乳房形态测量进行预测。
