Impacts of weaning age on dietary needs of whey permeate for pigs at 7 to 11 kg body weight

作     者：Ki Beom Jang Marcos Elias Duarte Jerry M.Purvis Sung Woo Kim Ki Beom Jang;Marcos Elias Duarte;Jerry M.Purvis;Sung Woo Kim

作者机构：Department of Animal ScienceNorth Carolina State UniversityRaleighNC 27695USA N.G.Purvis Farm IncRobbinsNC 27325USA. 

出 版 物：《Journal of Animal Science and Biotechnology》 (畜牧与生物技术杂志（英文版）)

年 卷 期：2022年第13卷第2期

页      面：593-600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：This study was awarded and funded by American Dairy Products Institute(Elmhurst,IL,USA) Financial support was also provided by North Carolina Agricultural Foundation(Raleigh,NC,USA) USDA-NIFA Hatch(#02636)for this study 

主　　题：Growth performance Nursery pigs Weaning age Whey permeate 

摘      要：Background:Whey permeate is an effective lactose source for nursery pigs and the most benefits are obtained when pigs are at 7 to 11 kg *** weaning ages could cause different length of early-weaner phases until 7 kg BW and thus it would influence the dietary need of whey permeate during 7 to 11 kg BW of *** study aimed to evaluate if weaning ages would affect the dietary needs of whey permeate for optimum growth performance of pigs at 7 to 11 kg ***:A total of 1,632 pigs were weaned at d 21(d 21.2±1.3)or d 25(d 24.6±1.1)after *** pigs had a common early-weaner feeds until they reached 7 kg *** pigs reached 7 kg BW within a weaning age group,they were allotted in a randomized complete block design(2×4 factorial).Two factors were weaning age groups(21 and 25 d of age)and varying whey permeate levels(7.50%,11.25%,15.00%,and 18.75%).Data were analyzed using the GLM and NLIN procedures of SAS for slope-ratio and broken-line analyses to determine the growth response to whey permeate and optimal daily whey permeate intake for the growth of the pigs weaned at different ***:Pigs weaned at 21 d of age had a common diet for 11 d to reach 7 kg BW whereas pigs weaned at 25 d of age needed 2 *** G:F of pigs weaned at 25 d of age responded to increased daily whey permeate intake greater(P0.05)than pigs weaned at 21 d of *** were obtained(P0.05)at 88 and 60 g/d daily whey permeate intake or 17.0%and 14.4%of whey permeate for G:F of pigs weaned at 21 and 25 d of age,***:Pigs weaned at an older age with a short early-weaner phase had a greater growth response to whey permeate intake compared with pigs weaned at a younger age with a long early-weaner *** weaning ages affected dietary needs of whey permeate for optimum growth performance of pigs from 7 to 11 kg BW.