Zhang Ge, Sun Zhiqiang, Wang Tenghao, Liu Ling, Zhao Jinbiao, Zhang Zeyu
State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
Zhejiang Qinglian Food Co., Ltd., Jiaxing 314399, China.
Animals (Basel). 2024 Nov 21;14(23):3355. doi: 10.3390/ani14233355.
Experiments were conducted to investigate the effects of extrusion devices on the available energy and nutrient digestibility of soybean meal (SBM), and further to investigate the impact of different levels of extruded SBM on the growth performance and nutrient digestibility of weaned piglets. In Exp. 1, eighteen crossbreed growing pigs with an initial body weight (BW) of 32.6 ± 2.7 kg were randomly assigned to three treatments, including a corn basal diet, SBM, and extruded SBM diets. In addition, six cannulated pigs (initial BW, 22.3 ± 1.8 kg) were allocated across an 6 × 3 Youden square design. The experimental treatments included a N-free diet and three diets containing 40% of different SBM sources. The results indicated that extrusion reduced the anti-nutritional factors in soybean meal without affecting the digestibility of available energy and nutrients. In Exp. 2, 192 pigs (initial BW, 6.60 ± 0.54 kg) were allocated across four diets supplemented with 0%, 3%, 6%, and 9% extruded SBM. The four treatments were randomized and each comprised six replicate pens containing four boars and four gilts. The results showed that average daily feed intake (ADFI) decreased linearly with the increase in extruded SBM levels from d 0-14 ( < 0.05), and average daily gain (ADG) increased; ATTD was higher in the GE, DM, OM, and CP of piglets in the 9% extruded SBM group ( < 0.05). In conclusion, the extrusion treatment reduced ANFs in SBM, and adding 9% extruded SBM to the diet improved the growth performance of weaned piglets by increasing the digestibility of nutrients.
进行了试验以研究挤压设备对豆粕（SBM）可利用能量和养分消化率的影响，并进一步研究不同水平的挤压豆粕对断奶仔猪生长性能和养分消化率的影响。在试验1中，将18头初始体重（BW）为32.6±2.7 kg的杂交生长猪随机分配到三种处理中，包括玉米基础日粮、豆粕和挤压豆粕日粮。此外，6头安装了瘘管的猪（初始体重，22.3±1.8 kg）按照6×3尤登方设计进行分配。试验处理包括无氮日粮和三种含有40%不同豆粕来源的日粮。结果表明，挤压降低了豆粕中的抗营养因子，而不影响可利用能量和养分的消化率。在试验2中，将192头猪（初始体重，6.60±0.54 kg）分配到四种日粮中，日粮分别添加0%、3%、6%和9%的挤压豆粕。四种处理随机分组，每组包括六个重复栏，每个重复栏中有四头公猪和四头母猪。结果显示，从第0至14天，平均日采食量（ADFI）随着挤压豆粕水平的增加呈线性下降（P<0.05），平均日增重（ADG）增加；9%挤压豆粕组仔猪的总能（GE）、干物质（DM）、有机物（OM）和粗蛋白（CP）的表观全肠道消化率（ATTD）更高（P<0.05）。总之，挤压处理降低了豆粕中的抗营养因子，日粮中添加9%的挤压豆粕可通过提高养分消化率来改善断奶仔猪的生长性能。
