Effects of the level and source of dietary physically effective fiber on feed intake,nutrient utilization,heat energy,ruminal fermentation,and milk production by Alpine goats

作     者：Raquel V.Lourencon Amlan K.Patra Luana P.S.Ribeiro Ryszard Puchala Wei Wang Terry A.Gipson Arthur L.Goetsch Raquel V.Lourencon;Amlan K.Patra;Luana P.S.Ribeiro;Ryszard Puchala;Wei Wang;Terry A.Gipson;Arthur L.Goetsch

作者机构：American Institute for Goat ResearchLangston UniversityLangstonOK73050USA 

出 版 物：《Animal Nutrition》 (动物营养（英文版）)

年 卷 期：2024年第17卷第2期

页      面：312-324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：supported by the USDA National Institute of Food and Agriculture,Evans-Allen Project OKLUGOETSCH2017(Accession Number 1012650) Capacity Building Grant OKLUPUCHALA2018(Accession Number 1018078) the USDA NIFA Evans-Allen Project OKLUWANG2023(Accession Number 7004023) 

主　　题：Physically effective fiber Alpine goat Lactation Ruminal fermentation Feeding behavior 

摘      要：Thirty-two primiparous and 31 multiparous Alpine goats were used to determine influences of diets varying in level and source of forage on performance in early to mid-lactation for 16 *** consisted of 40%,50%,60%,and 70%forage(designated as 40F,50F,60F,and 70F,respectively)with 60F and 70F containing coarsely ground grass hay(primarily orchardgrass)and 40F and 50F containing cottonseed hulls,alfalfa pellets,and coarsely ground wheat *** contained 15.9%to 16.3%crude protein and 37.8%,42.1%,53.5%,and 55.4%neutral detergent fiber(NDF)with 10.0%,15.8%,50.1%,and 55.5%particle retention on a 19-mm sieve,and 26.1%,29.6%,38.3%,and 40.0%physically effective NDF(peNDF)for 40F,50F,60F,and 70F,*** matter intake(2.71,2.75,1.96,and 1.95 kg/d)and milk yield(2.82,2.71,2.23,and 2.10 kg/d for 40F,50F,60F,and 70F,respectively)were lower(P0.05),but digestibility of NDF was greater(P0.05)by diet and was lower(P0.05)by diet or parity,but many interactions involving diet,period,hour,and parity were significant(P0.05).In conclusion,lactational performance of Alpine goats in early to mid-lactation will be constrained with diets high in forage of moderate quality,peN