Atigui Moufida, Brahmi Marwa, Hammadi Imen, Marnet Pierre-Guy, Hammadi Mohamed
Improvement and Integrated Development of Animal Productivity and Food Resources, Higher School of Agriculture Mateur, University of Carthage, Mateur 7030, Tunisia.
Livestock and Wildlife Laboratory, Arid Regions Institute, IRESA, Medenine 4100, Tunisia.
Animals (Basel). 2021 Jul 6;11(7):2014. doi: 10.3390/ani11072014.
This study aims to measure mammary morphological traits with a functional influence on machine milking ability of Tunisian Camels () and their evolution according to the stage of lactation and parity. Udder and teat measurements were recorded before morning milking and associated with the measurement of milk emission kinetics parameters evaluated with Lactocorder devices (WMB AG, Balgache, Switzerland) and observations. Three main teat shapes were recorded and their dimensions evolved with parity and stage of lactation. The milk flow curves were classified into three main types according to their maximum and average flow rates and they also evolve according to parity and stage of lactation. An average of 41% of the milk flow curves was bimodal. The correlations showed that some morphological traits were unfavorable to rapid milking and that these increase with parity. Therefore, this study provides the first elements for a morphological selection associated with an aptitude for mechanical milking which appears rather good in our dromedaries. Nevertheless, it will be necessary to monitor a possible negative evolution of the functional and anatomical traits of the udders during the career of the animals.
本研究旨在测量对突尼斯骆驼的机器挤奶能力有功能影响的乳腺形态特征，以及它们根据泌乳阶段和胎次的演变情况。在早晨挤奶前记录乳房和乳头的测量数据，并与使用Lactocorder设备（瑞士巴尔加赫的WMB AG公司）评估的乳汁排出动力学参数测量值以及观察结果相关联。记录了三种主要的乳头形状，其尺寸随胎次和泌乳阶段而变化。乳汁流量曲线根据其最大和平均流速分为三种主要类型，它们也随胎次和泌乳阶段而变化。平均41%的乳汁流量曲线是双峰的。相关性表明，一些形态特征不利于快速挤奶，并且这些特征会随着胎次增加。因此，本研究为与机械挤奶能力相关的形态选择提供了首个要素，而在我们的单峰骆驼中，这种能力似乎相当不错。然而，有必要监测动物生涯中乳房功能和解剖特征可能出现的负面演变情况。
