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首页> 外文期刊>Nigerian Journal of Animal Production >Relationship between udder measurements during pregnancy and partial daily milk yield in goats
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Relationship between udder measurements during pregnancy and partial daily milk yield in goats

机译：山羊怀孕期间乳房测量值与每日部分产奶量之间的关系

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摘要

Relationship between udder measurements during pregnancy and partial daily milk yield (PDM) in ten West African Dwarf (WAD), three Red Sokoto (RS) and Sahel goats was studied. Udder width (UW), udder circumference (UC), distance between teats (DBT) and teat length (TL) were measured monthly before conception and during pregnancy up to parturition, PDM was determined weekly for 12 weeks of lactation commencing from 4 days post partum. There was a slight increase in udder dimensions within the first 2trimesters of pregnancy (day 0 - 100) and then followed by an exponential increase during the third trimester (last 50 days of pregnancy) across the breeds. Sahel does had the largest udder dimensions with highest average PDM while WAD does had the smallest udder with lowest average PDM. The highest correlations between udder growth curve parameters and average PDM were obtained with A (r=0.795) and b (r=0.609). Thus, udder size at conception and during pregnancy appeared to be a significant determinantof average PDM per lactation and could he more important to average PDM than the rate of increase in udder size during pregnancy.
机译：研究了十只西非矮人（WAD），三只Red Sokoto（RS）和萨赫勒（Sahel）山羊怀孕期间乳房测量值与每日部分产奶量（PDM）之间的关系。在受孕前和怀孕期间直至分娩前每月测量乳房宽度（UW），乳房周长（UC），乳头之间的距离（DBT）和乳头长度（TL），从哺乳后第4天开始每周12周每周测定一次PDM产妇在怀孕的前两个三个月（第0-100天）中，乳房的尺寸略有增加，然后在整个三个月的最后三个月（怀孕的最后50天）中呈指数增加。 Sahel的乳房尺寸最大，平均PDM最高，而WAD的乳房尺寸最小，平均PDM最低。乳房生长曲线参数与平均PDM之间的最高相关性由A（r = 0.795）和b（r = 0.609）获得。因此，受孕时和怀孕期间的乳房大小似乎是每个泌乳期平均PDM的重要决定因素，对平均PDM而言，它可能比怀孕期间乳房大小增加的速度更为重要。

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