ABSTRACT This study examined the effects of young growth factor (YGF251) on the growth performance, nutrient digestibility, meat quality, and fecal gas emission of finishing pigs. A total of 80 119-day-old crossbred finishing pigs [(Yorkshire × Landrace) × Duroc], with an average initial body weight (BW) of 65.53 ± 3.89 kg, were used in a 61-day experiment with a completely randomized block design. The pigs were fed with either a basal control diet (CON) or a basal diet supplemented with 0.04% YGF251 (YGF). There were 10 replicate pens per treatment, with four pigs (two barrows and two gilts) per pen. In this study, pigs consuming the YGF251-supplemented diet had a higher average daily gain (ADG) and growth rate, as well as a lower feed conversion ratio (FCR), than the pigs consuming the CON diet. Moreover, with regard to meat quality, increased water-holding capacity (WHC) and decreased drip loss on day 7 were observed in pigs consuming the YGF diet. However, nutrient digestibility and fecal gas emission did not differ between the CON and YGF diet groups. In conclusion, the YGF251 diet group showed superior growth performance, WHC, and drip loss.

中文翻译：

---

YGF251对育肥猪生长性能、养分消化率、肉质及粪便气体排放的影响

摘要 本研究考察了幼龄生长因子 (YGF251) 对育肥猪生长性能、营养物质消化率、肉质和粪便气体排放的影响。总共80头119日龄杂交育肥猪[（约克夏×长白）×杜洛克]，平均初始体重（BW）为65.53±3.89公斤，用于完全随机区组的61天实验设计。给猪喂食基础对照日粮 (CON) 或补充 0.04% YGF251 (YGF) 的基础日粮。每个处理有 10 个重复围栏，每围栏有四头猪（两头公猪和两头小母猪）。在这项研究中，与食用 CON 饲料的猪相比，食用 YGF251 补充饲料的猪具有更高的平均日增重 (ADG) 和生长率，以及更低的饲料转化率 (FCR)。此外，在肉质方面，在食用 YGF 日粮的猪中观察到第 7 天的持水能力 (WHC) 增加和滴水损失减少。然而，CON 和 YGF 饮食组之间的营养消化率和粪便气体排放没有差异。总之，YGF251 饮食组表现出优异的生长性能、WHC 和滴水损失。