Li Tianxiang, Kim In Ho
Department of Animal Biotechnology, Dankook University, Cheonan, Korea.
J Anim Physiol Anim Nutr (Berl). 2025 Jan;109(1):145-153. doi: 10.1111/jpn.14041. Epub 2024 Sep 12.
This experiment aimed to evaluate the effects of low doses of Quillaja saponin (QS) or phytase (PHY) on growth performance, nutrient digestibility, faecal gas emissions, and carcass grade in growing-finishing pigs. A total of 72 pigs (Landrace × Yorkshire × Duroc), each weighing 25.82 ± 1.68 kg, were selected and randomly assigned to three treatment groups. Each group had six replicates, with four pigs per pen, and the allocation was based on the four initial body weight and sex of the pigs. They were randomly divided into the following three diet groups: the basal diet as a control (CON) group, the basal diet + 0.02% PHY; and the basal diet + 0.01% QS. The experiment period lasted for 110 days. The results of adding 0.01% QS to the basal diet of pigs show that it can significantly increase the body weight (BW) of growing-finishing pigs on the 110th day (p < 0.05). QS can significantly increase the average daily weight gain (ADG) on Days 80-110 of the experiment (p < 0.05). QS can significantly increase the total average daily weight gain (TADG) of growing-finishing pigs during the entire experimental period (p < 0.05) and has a tendency to improve the average daily feed intake and feed conversion rate during the entire experimental period. However, QS has no significant effect on pig nutrient digestibility and carcass grade. In addition, we also found that QS has a tendency to reduce carbon dioxide emissions. However, adding 0.02% PHY to the basal diet of growing-finishing pigs can only increase the TADG during the entire experimental period. Throughout the experiment, adding PHY to the diet had no significant impact on the nutrient digestibility, faecal gas emissions, and carcass grade of growing-finishing pigs. In summary, adding QS to feed can significantly improve the growth performance of growing-finishing pigs, and has a tendency to improve faecal gas emissions. PHY can only improve the growth performance of growing-finishing pigs.
本试验旨在评估低剂量皂树皮皂苷（QS）或植酸酶（PHY）对生长育肥猪生长性能、养分消化率、粪便气体排放及胴体等级的影响。选取72头体重为25.82±1.68千克的猪（长白×大白×杜洛克），随机分为三个处理组。每组6个重复，每栏4头猪，根据猪的初始体重和性别进行分配。随机分为以下三个日粮组：基础日粮作为对照组（CON），基础日粮+0.02% PHY；基础日粮+0.01% QS。试验期持续110天。在猪的基础日粮中添加0.01% QS的结果表明，其可显著提高生长育肥猪在第110天的体重（BW）（p<0.05）。QS可显著提高试验第80 - 110天的平均日增重（ADG）（p<0.05）。QS可显著提高生长育肥猪在整个试验期的总平均日增重（TADG）（p<0.05），且在整个试验期有提高平均日采食量和饲料转化率的趋势。然而，QS对猪的养分消化率和胴体等级无显著影响。此外，我们还发现QS有降低二氧化碳排放的趋势。然而，在生长育肥猪的基础日粮中添加0.02% PHY仅能在整个试验期提高TADG。在整个试验过程中，日粮中添加PHY对生长育肥猪的养分消化率、粪便气体排放及胴体等级无显著影响。综上所述，在饲料中添加QS可显著提高生长育肥猪的生长性能，并有改善粪便气体排放的趋势。PHY仅能提高生长育肥猪的生长性能。
