Performance and ruminal parameters of fattening Moghani lambs fed recycled poultry bedding

作     者：Ayoub Azizi Afrooz Sharifi Arash Azarfar Ali Kiani Alireza Jolazadeh 

作者机构：Animal Science GroupFaculty of Agricultural SciencesLorestan University Animal Science DepartmentKhuzestan Ramin Agricultural and Natural Resources University 

出 版 物：《Animal Nutrition》 (动物营养（英文版）)

年 卷 期：2017年第3卷第2期

页      面：145-150页

核心收录：

学科分类：090502[农学-动物营养与饲料科学] 0905[农学-畜牧学] 09[农学] 

主　　题：Recycled poultry bedding Performance Enzyme activity Microbial protein Lamb 

摘      要：This study investigated the effects of recycled poultry bedding(RPB) on performance and protozoa population, microbial enzyme activity and microbial protein synthesis(MPS) in rumen contents of fattening lambs. Thirty-six male Moghani lambs(31.4 ± 3.2 kg body weight) were fed iso-energetic and iso-nitrogenous diets containing 0, 70,140 or 210 g/kg dry matter(DM) RPB in a balanced randomized design(9 lambs per treatment). Results showed that final body weight, DM intake, average daily gain and feed conversion ratio were unchanged(P 0.05) by RPB inclusion. Total protozoa population and subfamily of Entoniniinae and Diplodiniiae were linearly decreased by RPB(L, P 0.05) by feeding the experimental diets. Inclusion of RPB in the diet linearly decreased extra cellular and total a-amylase activity(L, P 0.05). The extra cellular activity of proteases tended to increase(L, P=0.07) and their total and cellular activity increased(P 0.05) in lambs fed RPB. Incorporation of RPB into the diet had no effect(L, P 0.05) on urinary purine derivative excretion and MPS. In conclusion, inclusion of RPB up to 210 g/kg DM had no negative impact on performance, ruminal fibrolytic enzyme activity and MPS, while it increased rumen protease activity and decreased protozoa population in fattening Moghani lambs.