摘要
选用3只安装永久瘤胃瘘管的甘肃高山细毛羯羊(1.5岁,平均体重22.5 kg),采用3×3拉丁方设计,研究3种组合饲粮,即对照饲粮(Ⅰ)、含甜菜渣饲粮(Ⅱ)、含苹果渣饲粮(Ⅲ)对绵羊消化代谢的影响。试验分3期,每期预试期10 d,正试期9 d。结果表明,饲粮Ⅰ、Ⅱ的干物质(DM)和有机物质(OM)消化量与消化率均显著高于Ⅲ(P<0.05);饲粮Ⅱ的中性洗涤纤维(NDF)和酸性洗涤纤维(ADF)消化量及消化率呈现出高于Ⅰ、Ⅲ的趋势(P>0.05),饲粮Ⅲ的NDF和ADF消化率也呈现出低于Ⅰ的趋势;饲粮Ⅱ的氮消化量显著高于Ⅰ(P<0.05),其消化率显著高于饲粮Ⅰ、Ⅲ(P<0.05),呈现出其氮存留量高于Ⅰ及氮存留率高于Ⅰ、Ⅲ的趋势;饲粮Ⅱ钙的表观消化率显著高于Ⅰ(P<0.01)、Ⅲ(P<0.05),Ⅲ也显著高于Ⅰ(P<0.05);饲粮Ⅲ的磷表观消化量显著高于Ⅰ、Ⅱ(P<0.05),且呈现饲粮Ⅲ磷消化率高于Ⅱ,Ⅱ也高于Ⅰ的趋势。
Three one and a half year old Gansu high mountain fine wool wethers (average live weight 22.5 kg)were fitted with permanent ruminal fistulas and a 3 × 3 Latin square design was used to study the effects ofthree combinations of diet (Ⅰ control, Ⅱ with 85 beet pulp, and Ⅲ with 8% apple pomace) on apparent digestion and retention of nitrogen. There were three 19 day periods (a 10-d adjustment followed by 9-d of collections) for each period. Apparent digested DM, OM and digestibility of DM Ⅰ and Ⅱ were significantly greater than those of Ⅲ (P〈0.05). The digeste of NDF and ADF in diet Ⅱ were greater than those of diet Ⅰ , while those of with these of diet Ⅰ. The digested N of diet Ⅱ was significantly (P〈0.05 gestibility of Ⅱ was significantly (P〈0.05) greater than those of I and Ⅲ. than of Ⅰ and Ⅲ. The apparent digestibility of Ca for diet Ⅱ was significantl Ⅰ and of Ⅲ (P〈0.05), and that of Ⅲ was significantly greater than that of (P〈0.05)significantly greater than those of Ⅱ and Ⅱ. The apparent digest compared with I and Ⅱ. and OM of wethers fed with diets d NDF, ADF and the digestibility diet Ⅲ were lower by comparison )greater than that of I and N diThere was more retained N of Ⅲ y (P〈0.01) greater than those of Ⅰ. The digested P of diet Ⅲ was ibility of P in diet Ⅲ was greater
出处
《草业学报》
CSCD
北大核心
2009年第1期112-117,共6页
Acta Prataculturae Sinica
基金
国家农业科技成果转化资金项目(2008GB2G100324)
教育部春晖计划项目(Z2004-1-62022)
甘肃省农业科技成果转化基金项目(0704XCNA008)资助
关键词
绵羊
甜菜渣
苹果渣
消化
氮代谢
sheep
beet pulp
apple pomace
digestion
metabolism