【摘要】 对淮南地区荷斯坦牛体型线性性状与产奶量进行了相关分析,结果显示:荷斯坦牛后乳房高度与乳牛产奶量成强正相关(P<0.01)后乳房宽度与产奶量呈中等强度正相关(P<0.05),乳房深度与产奶量则呈显著负相关(P<0.05),乳静脉长度与产奶量呈显著正相关(P<0.05),而乳头长度与乳头直径在4胎前均与产奶量呈显著负相关(P<0.05),4胎后则呈弱负相关(P<0.05);后乳房高度、后乳房宽度及乳静脉长度是直接影响产奶量的重要性状。更多还原

【Abstract】 The experiment had a correlation analyze on milk yield and linear type trait at Huainan area.The result indicated: Holstein rear udder height has a strong positive correlation with milk yield(P<0.01),rear udder width has a mid-positive correlation with milk yield(P<0.05),udder depth has a mid-negative correlation with milk yield(P<0.05),the length of mammary veins has a mid-positive correlation with milk yield(P<0.05),however the length and diameter of nipple have a obvious negative correlation before the fourth lactation.After the fourth lactation the correlation will turn to weak negative correlation(P>0.05);The height,width of rear udder and the length of mammary veins are the important trait which have a direct effection on milk yield.更多还原