辽宁绒山羊成年公羊对不同苜蓿草比例TMR日粮消化性能的研究  

Research on digestibility of diet with Alfalfa Ratio for Liaoning Cashmere Rams

作　　者：孙亚波[1] 边革[1] 彭宏伟 李博平 

机构地区：[1]辽宁省畜牧科学研究院,辽宁辽阳111000 [2]辽宁省畜牧业经济管理站,辽宁沈阳110032

出　　处：《现代畜牧兽医》2015年第5期19-24,共6页Modern Journal of Animal Husbandry and Veterinary Medicine

基　　金：国家"十二五"科技支撑项目"辽宁省风沙类中低产田紫花苜蓿高效生产利用技术研究与示范(2011BAD17B04-3-1);国家绒毛产业技术体系饲养管理岗位科学家(CARS-40-15);辽宁省博士科研启动(20111145)项目支持

摘　　要：选择12只辽宁绒山羊种公羊,随机分成3组,每组4只,试验1组、2组和3组日粮苜蓿草比例依次为20%、30%和40%,精粗比分别为29.6:70.4、23.2:76.8和17.7:82.3,其他营养水平基本相同。结果表明,试验1组和2组粗蛋白表观消化率和代谢率均高于试验3组,并且试验1组与3组差异显著(P<0.05)。试验1组总能表观消化率和总能代谢率均显著(P<0.05)高于试验3组。试验1组粗脂肪表观消化率显著(P<0.05)高于试验3组。在矿物质方面,试验1组和2组粗灰分表观消化率和磷表观消化率均高于试验3组,并且试验1组与3组差异显著(P<0.05)。在纤维类物质方面,试验1组和2组粗纤维和NDF的表观消化率均高于试验3组,且试验1组与3组差异显著(P<0.05)。试验1组和2组ADF的表观消化率均极显著(P<0.01)高于试验3组。因此,当苜蓿草比例为20%、精粗比为30:70时,成年辽宁绒山羊公羊对各类营养物质的消化率最高,饲料利用率最佳。Twelve Liaoning Cashmere Rams were randomly divided into three groups, feeding withnumber1 to 3 diet which including alfalfa 20%, 30% and 40%, and the concentrate to forage ratiowere 29.6%：70.4%,23.2%：76.8% and 17.7%：82.3% respectively. And other nutrients were nearly same. The apparent digestibility and metabolic rate of crude protein in group Ⅰ andⅡ were all higherthan group Ⅲ, and there was significant（P〈0. 05） difference between group Ⅰ and group Ⅲ. Appar- ent digestibility and metabolic rate of GE（gross energy） in group Ⅰ was significantly（P〈0. 05）higher than group Ⅲ. Apparent digestibility of EE（ether extract）, Ash, phosphorus, CF（Crude Fi- ber）, NDF（neutral detergent fiber） in group Ⅰ was significantly （P〈0. 05） higher than group Ⅲ.And apparent digestibility of ADF（acid detergent fiber） in group Ⅰ and Ⅱ were extremely signifi- cantly（P〈0. 01） higher than group Ⅲ. According to the results it could been summarized that thedigestibility of nutrients was the highest when diet including alfalfa 20%, the concentrate to forage ratio was 30%：70%.

关 键 词：辽宁绒山羊 成年公羊 苜蓿草 消化性能 

分 类 号：S827[农业科学—畜牧学]