Spinler Mikayla S, Gebhardt Jordan T, Tokach Mike D, Goodband Robert D, DeRouchey Joel M, Kyle Josh M, Woodworth Jason C
Department of Animal Sciences and Industry, College of Agriculture, Kansas State University, Manhattan, KS 66506, USA.
Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA.
Transl Anim Sci. 2023 May 27;7(1):txad056. doi: 10.1093/tas/txad056. eCollection 2023 Jan.
A total of 105 sows (Line 241, DNA, Columbus, NE) were used across four batch farrowing groups to evaluate the effects of feeding a feed flavor in lactation diets on sow and litter performance. Sow groups 1 and 2 farrowed in an old farrowing facility during the summer months and groups 3 and 4 farrowed in a new farrowing facility during the winter months. Sows were blocked by body weight (BW) within parity on days 110 of gestation and allotted to 1 of 2 dietary treatments. Dietary treatments were a standard corn-soy-based lactation diet (control) or the control diet with the addition of a feed flavor at 0.05% of diet (Krave AP, Adisseo, Alpharetta, GA, USA). Farrowing facility environment had a large impact and resulted in many interactions with the feed flavor treatment. From farrowing to weaning, sows fed the feed flavor in the old farrowing house tended to have a higher ( = 0.058) lactation feed intake, while no difference in average daily feed intake (ADFI) was observed in the new farrowing house. Pigs weaned from sows fed with the feed flavor in the old farrowing facility had a higher ( = 0.026) BW at weaning and piglet average daily gain (ADG) from day 2 to weaning ( = 0.001) compared to piglets from sows not fed with the feed flavor; whereas the opposite occurred in the new farrowing house. Progeny from one farrowing group in the old farrowing facility was followed into the nursery. A total of 360 weaned pigs (DNA 241 × 600: initially 5.7 kg) were used in a 2 × 2 factorial in the nursery portion of the study to evaluate the effects of previous sow feed flavoring treatment (control vs. flavor) and nursery diets formulated with or without a feed flavor on growth performance in a 38-d trial. Nursery treatments were either a control diet or a diet containing a feed flavor (Delistart #NA 21, Adisseo). Offspring from sows fed with the flavor diet were heavier at weaning ( < 0.001) which was maintained throughout the study. Overall, progeny from sows fed with a diet containing a feed flavor had greater ( < 0.05) ADG, ADFI, and final BW during the trial. The presence of a feed flavor in the nursery did not improve overall nursery performance. In conclusion, when sow lactation feed intake was increased in the old farrowing house, pigs weaned from sows fed with the flavor diet were heavier ( = 0.039) at weaning compared to pigs weaned from sows fed with the control diet. Adding the feed flavor increased sow feed intake and piglet ADG in a warm environment, but not in a cool environment.
总共105头母猪（241品系，DNA，哥伦布，内布拉斯加州）被用于四个批次的产仔组，以评估在泌乳日粮中添加饲料风味剂对母猪和仔猪性能的影响。母猪第1组和第2组在夏季于一个旧的产仔设施中产仔，第3组和第4组在冬季于一个新的产仔设施中产仔。在妊娠第110天，按胎次和体重对母猪进行分组，并分配到两种日粮处理之一。日粮处理为标准玉米 - 大豆型泌乳日粮（对照）或在对照日粮中添加0.05%日粮的饲料风味剂（Krave AP，安迪苏公司，阿尔法利塔，佐治亚州，美国）。产仔设施环境有很大影响，并导致与饲料风味剂处理有许多相互作用。从产仔到断奶，在旧产仔舍中饲喂饲料风味剂的母猪泌乳期采食量往往较高（P = 0.058），而在新产仔舍中平均日采食量（ADFI）没有差异。与未饲喂饲料风味剂的母猪所产仔猪相比，在旧产仔设施中饲喂饲料风味剂的母猪所产断奶仔猪断奶体重较高（P = 0.026），且从第2天到断奶的仔猪平均日增重（ADG）较高（P = 0.001）；而在新产仔舍中情况则相反。旧产仔设施中一个产仔组的后代被跟踪至保育期。在研究的保育期部分，总共360头断奶仔猪（DNA 241×600：初始体重5.7千克）用于2×2析因试验，以评估先前母猪饲料风味剂处理（对照与风味剂）以及含或不含饲料风味剂的保育日粮对38天试验期生长性能的影响。保育期处理为对照日粮或含饲料风味剂的日粮（Delistart #NA 21，安迪苏公司）。饲喂风味剂日粮的母猪所产后代断奶时较重（P < 0.001），且在整个研究期间体重一直保持较高。总体而言，在试验期间，饲喂含饲料风味剂日粮的母猪所产后代平均日增重（ADG）、平均日采食量（ADFI）和最终体重更高（P < 0.05）。保育日粮中添加饲料风味剂并未改善整体保育性能。总之，当旧产仔舍中母猪泌乳期采食量增加时，与饲喂对照日粮的母猪所产断奶仔猪相比，饲喂风味剂日粮的母猪所产断奶仔猪断奶时体重更重（P = 0.039）。在温暖环境中添加饲料风味剂可增加母猪采食量和仔猪ADG，但在凉爽环境中则不然。
