Moore Karen L, Loudon Emalyn, Dunshea Frank R
Pork Innovation WA Inc., Viveash, WA 3056, Australia.
Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia.
Animals (Basel). 2021 Jun 23;11(7):1866. doi: 10.3390/ani11071866.
An experiment was conducted to determine the appropriate dietary concentration of albus lupins that would lower feed intake and decrease backfat while optimizing the effect on the growth rate of immunocastrated male pigs. The pigs were fed albus lupins (varying from 0 to 200 g/kg) from 2 weeks after the last immunization against GnRF for 14 d prior to slaughter (where d 0 is the day of the last immunization against GnRF). Increasing the dietary albus lupin concentration decreased daily gain for d 15 to 28 ( = 0.004). Daily feed intake also decreased as the concentration of the albus lupins increased for d 15 to 28 ( < 0.001). Carcass weight and backfat decreased as the concentration of dietary albus lupins increased ( = 0.011 and = 0.024, respectively). The albus lupin concentration to maximize growth rate, minimize feed intake, maximize carcass weight and minimize backfat depth was 120, 142, 62.7 and 138 g/kg, respectively.
进行了一项实验，以确定白羽扇豆的适宜日粮浓度，该浓度既能降低采食量和背膘厚度，又能在使免疫去势公猪生长率达到最佳的同时产生最大效果。这些猪在最后一次免疫GnRF两周后开始饲喂白羽扇豆（浓度从0至200克/千克不等），直至屠宰前14天（其中第0天为最后一次免疫GnRF的日期）。提高日粮中白羽扇豆的浓度会降低第15至28天的日增重（P = 0.004）。在第15至28天，随着白羽扇豆浓度的增加，日采食量也会下降（P < 0.001）。随着日粮中白羽扇豆浓度增加胴体重和背膘厚度下降（分别为P = 0.011和P = 0.024）。使生长率最大化、采食量最小化、胴体重最大化以及背膘厚度最小化的白羽扇豆浓度分别为120、142、62.7和138克/千克。
