Park Jong Wan, Lee Sang Sik, Hosseindoust Abdolreza, Mun Jun Young, Ha Sang Hun, Tajudeen Habeeb, Neves Silvestre Priscilla, Choi So Dam, Park Seon Ah, Ingale Santosh Laxman, Lokhande Anushka, Kim Jin Soo
Department of Animal Industry Convergence, Kangwon National University, chuncheon, Korea.
Advanced Enzyme Technologies Ltd., Thane, India.
Anim Biosci. 2025 Aug 12. doi: 10.5713/ab.25.0186.
: This study aimed to investigate the effect of different levels of phytase supplementation on growth performance parameters, nutrient digestibility, amino acid digestibility, and blood inositol concentration in weanling piglets that fed corn-soybean meal diet.
: Weanling piglets were allocated to one of the five feeding treatments: control, a corn-soybean meal diet; dietary supplementation of 500 FTU/kg phytase; dietary supplementation of 750 FTU/kg phytase; dietary supplementation of 1,000 FTU/kg phytase; dietary supplementation of 1,500 FTU/kg phytase. The experiment had two feeding phases (phase 1, d 1 to 21; phase 2, d 22 to 42) to clarify effects of dietary phytase supplementation.
: The final body weight, average daily gain, and gain-to-feed ratio in the whole experimental period were increased linearly in response of elevated levels of dietary phytase supplementation (p < 0.01). There was no significant difference in average daily feed intake in the whole experimental period. In phase 1, there was a linear increase in apparent total tract digestibility of crude protein (CP), gross energy, and calcium as the level of dietary phytase supplementation increases. Phosphorus digestibility tended to be linearly increased (p = 0.056). In phase 2, linear increases were observed (p < 0.01) in calcium and phosphorus digestibility. Additionally, CP digestibility was linearly increased (p < 0.05). Dry matter digestibility showed a quadratic effect (p < 0.05). The digestibility of arginine, leucine, lysine, tryptophan, alanine, and phenylalanine and cysteine showed a linear increase (p < 0.01). There was a linear increase (p < 0.01) in blood myo-inositol levels in phase 2.
: Dietary phytase supplementation at levels greater than 1,000 FTU/kg significantly improved growth performance, nutrient digestibility, and blood myo-inositol concentrations in weanling pigs. However, further studies are necessary to investigate the effects of super dosing and to determine the optimal phytase dosage.
本研究旨在探讨在以玉米 - 豆粕为基础日粮的断奶仔猪中，添加不同水平植酸酶对其生长性能参数、养分消化率、氨基酸消化率及血液肌醇浓度的影响。
断奶仔猪被分配至五种饲养处理之一：对照组，即玉米 - 豆粕日粮；日粮中添加500 FTU/kg植酸酶；日粮中添加750 FTU/kg植酸酶；日粮中添加1,000 FTU/kg植酸酶；日粮中添加1,500 FTU/kg植酸酶。实验分为两个饲养阶段（第1阶段，第1天至第21天；第2阶段，第22天至第42天），以阐明日粮添加植酸酶的效果。
在整个实验期内，随着日粮植酸酶添加水平的升高，仔猪的末体重、平均日增重和料重比呈线性增加（p < 0.01）。整个实验期内平均日采食量无显著差异。在第1阶段，随着日粮植酸酶添加水平的增加，粗蛋白（CP）、总能和钙的表观全肠道消化率呈线性增加。磷消化率呈线性增加趋势（p = 0.056）。在第2阶段，钙和磷的消化率呈线性增加（p < 0.01）。此外，CP消化率呈线性增加（p < 0.05）。干物质消化率呈现二次效应（p < 0.05）。精氨酸、亮氨酸、赖氨酸、色氨酸、丙氨酸、苯丙氨酸和半胱氨酸的消化率呈线性增加（p < 0.01）。在第2阶段，血液中肌醇水平呈线性增加（p < 0.01）。
日粮中添加高于1,000 FTU/kg水平的植酸酶可显著提高断奶仔猪的生长性能、养分消化率及血液肌醇浓度。然而，有必要进一步研究超量添加的效果并确定最佳植酸酶剂量。
