| 奶牛胎儿的父亲对母亲产奶量的影响 |
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| 引用本文： | 秦志锐,杨建尧,张沅,江邦岚,张守仁.奶牛胎儿的父亲对母亲产奶量的影响[J].畜牧兽医学报,1992(4). |
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| 作者姓名： | 秦志锐 杨建尧 张沅 江邦岚 张守仁 |
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| 作者单位： | 中国农业科学院畜牧研究所
(秦志锐)，北京市北郊农场
(杨建尧)，北京农业大学
(张沅)，北京市东郊农场
(江邦岚)，北京市东风农场(张守仁) |
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| 摘 要： | 用中国黑白花奶牛研究了胎儿的父亲及犊牛初生重对母亲当胎及下一个泌乳期产奶量的影响,结果指出胎儿的父亲对母亲当胎及下一个泌乳期90天和305天的产奶量,都有极显著的影响,各占产奶总变异量的9.4％,15.3％及3.77％(P<0.01)。犊牛初生重对母亲产奶量的影响也显著(P<0.05)。当根据公牛的产奶预期差(PDM)将胎儿的父亲分为两组后,发现差异显著(P<0.05),胎儿父亲的PDM高,胎儿母亲的产奶量也高,因此胎儿母亲产奶量不仅受胎儿重量的影响,也受父亲PDM的影响。
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| 关 键 词： | 产奶预期差 初生重、胎儿 |
EFFECT OF SIRE OF FETUS ON DAM MILK YIELD IN THE CHINESE BLACK AND WHITE DAIRY CATTLE |
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| Qin Zhirui.EFFECT OF SIRE OF FETUS ON DAM MILK YIELD IN THE CHINESE BLACK AND WHITE DAIRY CATTLE[J].Acta Veterinaria et Zootechnica Sinica,1992(4). |
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| Authors: | Qin Zhirui |
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| Abstract: | The influence of the sire of fetus and the birth weight of the calf on the dam's current and subsequent milk Yield was investigated in Chinese Black and White dairy Cattle. The results of this study suggest that there is a very significant effect of the sire of fetus on the dam's current and subseqent 90 days and 305 days milk yield ( P<0.01 ) and the proportions of variance accounted for by service sires were 9.4%, 15.3% and 3.77% respectively. A significant effect of the calf birth weight on the dam's milk yield was also found in this study ( P<0.05 ). When the sires of fetus were divided into two groups according to their Predicted Difference of Milk ( PDM ) the effect of the sire of fetus on the dam's sebseqent 90 days milk yield can be seen significantly ( P<0.05 ) . The high PDM of the sire of fetus was associated with the high milk yield of the dam. Therefore the dam's milk yield is effected not only by the calf birth weight but also by the sire's PDM. |
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| Keywords: | Predicted Difference of milk ( PDM ) Birth weight Fetus |
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