喀麦隆北部地区瘤牛的体型和乳房形态对产奶量的影响。

Effects of body conformation and udder morphology on milk yield of zebu cows in North region of Cameroon.

作者信息

Mingoas Kilekoung Jean-Pierre, Awah-Ndukum Julius, Dakyang Houinga, Zoli Pagnah André

机构信息

Department of Physiology and Biochemistry, School of Veterinary Medicine and Sciences, University of Ngaoundere, PO Box 454 Ngaoundere, Cameroon.

Department of Anatomy, Histology and Embryology, School of Veterinary Medicine and Sciences, University of Ngaoundere, PO Box 454 Ngaoundere, Cameroon.

出版信息

Vet World. 2017 Aug;10(8):901-905. doi: 10.14202/vetworld.2017.901-905. Epub 2017 Aug 11.

DOI:10.14202/vetworld.2017.901-905

PMID:28919680

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5591476/

Abstract

AIM

The aim of the study was to assess the effect of udder morphological characteristics on milk yield in zebu cows of Cameroon.

MATERIALS AND METHODS

The diameter and height of the udder, length and diameter of the teat, and the milk yield were measured in 29 Djafun (Red Mbororo) and 19 Aku (White Fulani) cows in Louggueré zootechnical station in the North region of Cameroon.

RESULTS

Overall, strong positive correlation (r=0.60) between the diameter (240.21±28.58 mm) and height (131.12±23.64 mm) of udders (p<0.001) and between length (39.51±6.44 mm) and diameter (19.85±3.08 mm) of teats (r=0.78) were found in the zebu cows. Udder morphologic characteristics varied significantly (p<0.005) according to breed, lactation stage and parity, and height at whiters. There was significant (p<0.001) correlations between udder diameter (r=0.541) and height (r=0.549) with milk yield.

CONCLUSION

This study ascertained udder morphological characteristics values in local zebu cows, and showed that udder size is strong and positively correlated to milk yield. The findings are useful in genetic improvement programs of zebu cows.

摘要

目的

本研究旨在评估喀麦隆瘤牛乳房形态特征对产奶量的影响。

材料与方法

在喀麦隆北部地区卢格雷畜牧站，对29头贾丰（红姆博罗罗）牛和19头阿库（白富拉尼）牛测量了乳房的直径和高度、乳头的长度和直径以及产奶量。

结果

总体而言，在瘤牛中发现乳房直径（240.21±28.58毫米）与高度（131.12±23.64毫米）之间存在强正相关（r = 0.60）（p<0.001），乳头长度（39.51±6.44毫米）与直径（19.85±3.08毫米）之间存在强正相关（r = 0.78）。乳房形态特征因品种、泌乳阶段、胎次和断奶时的身高而有显著差异（p<0.005）。乳房直径（r = 0.541）和高度（r = 0.549）与产奶量之间存在显著相关性（p<0.001）。