Effects of different levels of urea supplementation on nutrient intake and growth performance in growing camels fed roughage based complete pellet diets

作     者：Ntiranyibagira Emmanuel Niteen V.Patil Shekbar R.Bhagwat Abdul Lateef Kang Xu Hongnan Liu 

作者机构：Faculté d’Agronomie et de Bio-Ingénierie(FABI)Université du Burundi National Research Centre on Camel Indian Council for Agriculture Research College of Veterinary Science & Animal Husbandry Sardarkrushinagar Dantiwada Agricultural University Department of Physiology and Biochemistry College of Veterinary Science and Animal Husbandry Sardarkrushinagar Dantiwada Agricultural University Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry ProductionKey Laboratory of Agro-Ecological Processes in Subtropical Region Institute of Subtropical AgricultureChinese Academy of Sciences 

出 版 物：《Animal Nutrition》 (动物营养（英文版）)

年 卷 期：2015年第1卷第4期

页      面：356-361页

学科分类：0905[农学-畜牧学] 09[农学] 

基　　金：funded by NSFC(31501964 31501965 31402088) research program of State Key Laboratory of Food Science and Technology,Nanchang University(Project No.SKLF-ZZB-201509) 

主　　题：Urea Nutrient intake Growth performance Complete pellet diet Feed conversion ratio 

摘      要：The utilization of urea in camels has beneficial and negative effects. The aims of this study were to investigate the effects of different levels of urea supplementation on nutrients intake, digestibility,growth performance, feed efficiency and economics in growing camels fed roughage based complete pellet diets. In the present study, eighteen growing camels with an average live body weight of306.17 ± 2.05 kg were randomly assigned in three treatments: T1 = roughage complete pellet diet without urea,T2 = T1 plus 1% urea,and T3 = T1 plus 2% urea. The results showed that the urea supplementation significantly affected average daily feed and nutrient intake of dry matter(DM), organic matter(OM), crude protein(CP), neutral detergent fiber(NDF), and acid detergent fiber(ADF)(P 0.05). Similarly, digestion coefficient of DM, CP, ether extract(EE),crude fiber(CF) and ADF was influenced by increasing urea level(P 0.05). The intake of digestive nutrients was similar among all treatment groups. Total body live weight gain and average daily gain were significantly higher in urea supplemented groups(P 0.05) than in the control group. The supplementation of urea at 1% in low quality roughage complete pellet diets significantly improved(P 0.05) the feed efficiency. In conclusion,these results indicated that the incorporation of urea at 1% in roughage based complete pellet diets could positively improve nutrients intake, digestibility, growth performance and feed conversion efficiency of growing camels.