Preference, Feeding Behavior, and in Vitro Fermentation Characteristics of Pelleted Feeds Containing Alkaline Aqueous Lignin By-Product from Paper Processing in Holstein Heifers  

作　　者：Bruna C.Agustinho Hsin-Tai Hong Kathryne Blair Chia-Yu Tsai Hao-Che Hung Anne H.Laarman Pedram Rezamand 

机构地区：[1]Department of Animal,Veterinary and Food Sciences,University of Idaho,Moscow,ID 83844,USA [2]Department of Animal Science,National Chiayi University,Chiayi City 600,Taiwan [3]College of Veterinary Medicine,Washington State University,Pullman,WA 99164,USA [4]BioResource International,Durham,NC 27703,USA [5]Department of Agricultural,Food and Nutritional Science,University of Alberta,Edmonton,AB T6G 2P5,Canada

出　　处：《Journal of Agricultural Science and Technology(A)》2022年第2期54-64,共11页农业科学与技术（A）

摘　　要：The objectives of this study were to evaluate the effect of using multiple dietary inclusion rates of alkaline aqueous lignin by-product(AALB),in replacing a commercial binder,on the preference and feeding behavior of dairy heifers,and in vitro digestibility.In the experiment I,five pelleted diets including negative control(no-binder),commercial lignosulfonate binder,and 1.6%,3.2%,and 4.8%of AALB were tested.In the experiment II,five pelleted diets including negative control,positive control(2%molasses),and 1%,2.4%,and 3.8%of AALB(all combined with 2%of molasses)were tested.Feeding behavior and preference were determined for 60 min per animal per evaluation.In vitro digestibility was determined for each pelleted diet for 48 h over five incubation runs.Results from Experiment I showed animals receiving 1.6%of AALB diet showed the greatest preference(dry matter(DM),intake)and a greater number of approaches with eating than other diets.The preference was lower when animals received control or 4.8%AALB diets relative to other diets.Results from Experiment II revealed animals receiving 3.8%AALB combined with molasses showed the greatest DM intake preference over 60 min,and DM intake per approach.Diets that included 2.4%and 3.8%of AALB combined with molasses presented the greatest in vitro DM digestibility.Overall,heifers showed a greater intake when receiving pelleted diets with 1.6%AALB.Furthermore,preference,intake over 60 min,and in vitro DM digestibility,were greater in the pelleted diets that contained higher rates of AALB when combined with molasses.

关 键 词：Dairy heifer feeding behavior feed binder LIGNIN pellet. 

分 类 号：TQ9[化学工程]