Protein digestive dynamics of meat and bone meals in broiler chickens

作     者：Shemil P.Macelline Leon R.Mc Quade Bernie V.Mclnerney Amy F.Moss Peter H.Selle Sonia Y.Liu Shemil P.Macelline;Leon R.McQuade;Bernie V.Mclnerney;Amy F.Moss;Peter H.Selle;Sonia Y.Liu

作者机构：School of Life and Environmental SciencesFaculty of ScienceThe University of SydneySydneyNSW2006Australia Poultry Research FoundationThe University of SydneyCamdenNSW2570Australia Australian Proteome Analysis FacilityMacquarie UniversitySydneyNSW2109Australia School of Environmental and Rural ScienceUniversity of New EnglandArmidaleNSW2351Australia 

出 版 物：《Animal Nutrition》 (动物营养（英文版）)

年 卷 期：2020年第6卷第4期

页      面：521-528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] 

基　　金：AgriFutures Chicken-meat for funding the’Formulating broiler diets based on protein and starch digestive dynamics’project(PRJ010216)and for their ongoing encouragement and support financial support of Australian Government Research and Training Program International Scholarship for Mr Shemil Macelline awarded by Department of Education,Skills and Employment 

主　　题：Amino acid Digestibility Digestive dynamics Meat and bone meal Protein digestion rate 

摘      要：This study determined the variations in protein digestibilities and digestion rates in broiler chickens offered diets containing 7 different meat and bone meals(MBM).A total of 252 male Ross 308 broiler chickens were offered 7 atypical diets largely based on maize and MBM from 24 to 28 d *** experimental diet was offered to 6 replicates with 6 birds per replicate *** were collected in their entirety from 25 to 27 d post-hatch and on 28 d *** samples were collected from the proximal jejunum,distal jejunum,proximal ileum and distal *** digestibilities of protein were determined in each segment and apparent digestibilities of amino acids were measured in the distal *** were significant differences in apparent protein digestibility coefficients in the proximal jejunum(P=0.006),where broiler chickens offered the high ash beef meal(diet 7)generated the lowest protein digestibility in the proximal jejunum(0.318).Similarly,there were significant differences in apparent digestibility coefficients in the distal jejunum(P0.001)and distal ileum(P0.001)but not in the proximal *** pronounced differences were found in the disappearance rate of protein and there were significant differences in all 4 segments of the small intestine(P0.001).Broiler chickens offered the high ash beef meal had the lowest protein disappearance rate(P0.001).No difference was observed in the predicted protein digestion rate(P=0.486)but chickens offered the high ash beef meal had the lowest potential digestible protein(0.662,P=0.034)whereas the highest potential digestible protein(0.739)was detected in diet 5(containing a beef meal).This study contributed to the establishment of a preliminary database to include digestion rates of starch and protein into practical diet formulation.