日粮不同蛋白水平对舍饲辽宁绒山羊生产性能及营养物质消化率的影响  

Effects of different protein levels on production performance and nutrient digestibility in Liaoning cashmere goats

作　　者：刘海斌[1,2] 胡锐[3] 蔡凤坤[1] 史延平[3] 王丽[1] 戚磊[1] 卫功庆[1] 

机构地区：[1]吉林农业大学中药材学院,吉林长春130118 [2]河北北方学院动物科技学院,河北张家口075000 [3]辽东学院,辽宁丹东118000

出　　处：《西北农林科技大学学报（自然科学版）》2009年第3期43-48,共6页Journal of Northwest A&F University(Natural Science Edition)

基　　金：辽宁省科技厅自然科学基金项目(20041087)

摘　　要：【目的】探索舍饲辽宁绒山羊的饲养标准。【方法】采用单因子试验方法,将30只体质量相近、健康的2周岁辽宁绒山羊母羊,随机均分为5组,研究日粮不同蛋白水平(92.6,100.6,110.2,121.2,131.9 g/kg)对其生产性能及营养物质消化率的影响。【结果】日粮不同蛋白水平对辽宁绒山羊体增质量和产绒性能(绒毛生长量、绒毛生长率、产绒量、羊绒长度、羊绒细度、绒层厚度)无显著影响(P>0.05),日粮中粗蛋白水平达到110.2 g/kg以上时,显著促进粗毛的生长(P<0.05);粗蛋白表观消化率随日粮中蛋白水平的增加而增加,二者呈极显著正相关(P<0.01);日粮中粗蛋白水平为110.2 g/kg以上时,能量表观消化率下降明显,与蛋白水平呈极显著负相关(P<0.01);粗纤维表观消化率与日粮中蛋白水平相关不显著(P>0.05)。【结论】辽宁绒山羊日粮中适宜的蛋白水平为110.2g/kg。[Objective] The study investigated the breeding standardization of Liaoning cashmere goats. [Method] By the means of one-factor experiment,30 2-year-old and healthy female goats with similar body weight were arranged into 5 groups to study the effects of different dietary protein levels（92.6,100. 6, 110.2,121.2,131.9 g/kg） on production performance and nutrient digestibility in Liaonin cashmere goats. [Result] The results showed that different dietary protein levels had no significant （P〈0. 05）effect on live body gain and yield and qualities of cashmere （cashmere growth length, cashmere growth rate, cashmere yeild, cashmere length, cashmere diameter, cashmere high）. There was significant （P〈 0.05） decrease on guard hair growth when the protein level was above 110.2 g/kg;A significant（P〈0.01） positive correlation was found between dietary protein level and crude protein apparent digestibility, there was a significant （P〈0.01） negative correlation between dietary protein level and energy apparent digestibility,and there was no significant correlation（P〈0.05）between dietary protein level and crude fiber apparent digestibility.When the protein level was above 110.2 g/kg, energy apparent digestibility declined significantly. [Conclu sion] The dietary protein level of 110.2 g/kg is suitable for Liaoning cashmere goats.

关 键 词：日粮蛋白水平 辽宁绒山羊 生产性能 营养物质 消化率 

分 类 号：S816.32[农业科学—饲料科学]