沂蒙黑山羊与鲁波山羊育肥期生长性能比较分析

The Comparative of Growth Performance between Yimeng Black Goat and Lubo Goat in Fattening Period

为探究沂蒙黑山羊和鲁波山羊在育肥期生长性能的差异,选取3月龄断奶的沂蒙黑山羊13只、鲁波山羊16只开展育肥试验,预试期21 d,正试期90 d,分别于育肥第0、30、60和90天测定体重、体高、体长、胸围、胸宽、胸深、管围等生长发育指标。结果表明,在育肥期间,鲁波山羊体重总增量、平均日增重,体高、体长、胸围和胸深增长量均极显著高于沂蒙黑山羊(P<0.01),胸宽和管围增长量两个品种之间无显著性差异(P>0.05)。沂蒙黑山羊体重的阶段增长量呈上升趋势,体高、体长及胸围累计增长量均超过7 cm,而鲁波山羊体重的阶段增长量呈下降趋势,体高、体长及胸围累计增长量均超过11 cm;3个试验阶段中不同体尺指标在沂蒙黑山羊与鲁波山羊之间总体表现出与体重增长量一致的生长趋势。整体来看,鲁波山羊在育肥期的生长速度快于沂蒙黑山羊。

In order to compare the growth performance between Yimeng Black goat and Lubo goat,13 Yimeng Black goats and 16 Lubo goats weaned at 3 months old were selected to carry out the fattening experiment.The experiment period lasted 90 days after 21 days of adaptation time.The growth and development of body weight,body height,body length,chest circumference,chest width,chest depth and tube circumference were measured and analyzed.The results showed that the growth performance indexes of Lubo goat increased significantly faster than that of Yimeng Black goat(P<0.01),except chest width and tube circumference.The stage increase of body weight in Yimeng Black goat showed an upward trend,the cumulative increase of body height,body length and chest circumference were all more than 7 cm,while the stage increase of body weight in Lubo goat showed a downward trend,the cumulative increase of body height,body length and chest circumference were all more than 11 cm.During the three experimental stages,there were high significant or significant differences in indexes of body measurements between two breeds and the overall growth trend was consistent with body weight increment.On the whole the growth rate of Lubo goat in fattening period is faster than that of Yimeng Black goat.