不同精粗比日粮对青年母水牛尿中嘌呤衍生物排出规律的影响  

Effect of different rations of concentrate and roughage on excretion of urinary purine derivatives in young buffalo

作　　者：梁贤威[1] 白剑飞[2] 李丽莉[1] 杨炳壮[1] 郑威[1] 邹彩霞[1] 梁坤[1] 韦升菊[1] 庞春英[1] 李舒露[1] 夏中生[2] 

机构地区：[1]中国农业科学院广西水牛研究所,广西南宁530001 [2]广西大学动物科技学院,广西南宁530005

出　　处：《畜牧与兽医》2008年第12期6-10,共5页Animal Husbandry & Veterinary Medicine

基　　金：广西科学基金资助项目(桂科自0640075;桂科青0640033;桂科转0718005-4A)

摘　　要：试验选取3头24月龄、体重相近的健康母水牛,采用随机区组试验设计,分别饲喂象草22.93kg+精料1.19kg/d(处理A)、象草18.63kg+精料2.07kg/d(处理B)和象草14.33kg+精料2.96kg/d(处理C)3种不同精粗组合的试验日粮。结果表明:随着精料水平的上升,营养物质的表观消化率呈递增趋势(P<0.05);粪氮和尿氮呈递减趋势(P<0.05);氮平衡和能量消化率明显增加(P<0.01);尿中PD的排出量显著升高(P<0.05);肌酸酐的排出量稳定在40mmol/d左右,各处理间无显著差异(P>0.05)。In order to study the effects of different rations of concentrate and roughage on urinary excretion of PD and creatinine of young buffalo, 3 buffalos of 24-month-old were divided into three periods. Digestive-metabolism trial of each period was 17 days, including 12 days prefeeding and 5 days collecting samples. Three ration treatments were： concentrate 1.19 kg, roughage 22.96 kg, concentrate 2. 07 kg, roughage 18. 63 and concentrate 2. 96 kg, roughage 14. 33 kg respectively. The results showed that the apparent digestibility of the feed nutrients were increased （ P 〈 0. 05 ） ; fecal nitrogen and urine nitrogen were significantly decreased （ P 〈 0. 05 ） ; nitrogen balance and digesti-bility of energy were significantly increased （ P 〈 0. 01 ） ; urinary excretion of PD significantly increased （ P 〈 0. 05 ） as the level of concentrate ration increased. Urinary excretion of ereatinine was not significantly affected by concentrate and roughage rations and kept at about 40mmol/d （ P 〉 O. 05 ）.

关 键 词：青年母水牛 精粗比 嘌呤衍生物 

分 类 号：S815.4[农业科学—畜牧学]