Abstract The main objective of this study was to evaluate the influence of pig's age on the effectiveness of a new microbial 3-phytase, produced by Komagataella phaffii, under commercial conditions in barley-wheat based diets. Two experiments were conducted in weaned, growing and finishing pigs; firstly, to determine phytase efficacy on dry matter, organic matter, energy, protein and mineral (phosphorus, P and calcium, Ca) digestibility (n = 48; Experiment 1), and secondly, to evaluate the effect of phytase on growth performance and bone mineralization (n = 312; Experiment 2) . In each experiment, three barley-wheat based diets were formulated following the recommendations for each animal age, of which two versions were manufactured, including 0 and 1000 phytase units (FTU)/kg of feed of the new 3-phytase to be tested. Results showed the new phytase had the potential to increase the digestibility of Ca and P (on av. + 0.05 and +0.06, respectively; P

中文翻译：

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在商业条件下，年龄对 12 至 108 kg 猪大麦-小麦基日粮中新型 3-植酸酶有效性的影响

摘要 本研究的主要目的是评估猪龄对商业条件下大麦-小麦饲料中由 Komagataella phaffii 产生的新型微生物 3-植酸酶有效性的影响。在断奶、生长和育肥猪中进行了两个实验；首先，确定植酸酶对干物质、有机质、能量、蛋白质和矿物质（磷、磷和钙、钙）消化率的功效（n = 48；实验 1），其次，评估植酸酶对生长性能和骨矿化（n = 312；实验 2）。在每个实验中，按照每个动物年龄的建议配制三种基于大麦-小麦的日粮，其中制造了两种版本，包括 0 和 1000 植酸酶单位 (FTU)/kg 饲料的待测试新 3-植酸酶。