Increasing doses of phytase from Citrobacter braakii in diets with reduced inorganic phosphorus and calcium improve growth performance and lean meat of growing and finishing pigs
Increasing doses of phytase from Citrobacter braakii in diets with reduced inorganic phosphorus and calcium improve growth performance and lean meat of growing and finishing pigs
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DOI：
10.1371/journal.pone.0217490
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发表时间：
2019-05-24
期刊：
影响因子：
3.7
通讯作者：
Hermes, Rafael
中科院分区：
文献类型：
--
作者：
da Silva, Caio Abercio;Callegari, Marco Aurelio;Hermes, Rafael
本研究旨在评价提高细菌植酸酶(RONOZYME HiPhos)添加剂量对生长肥育猪生产性能和屠宰性能的影响。研究对象为雄性去势公猪120只，初始体重23.21+/-1.91 kg，日龄68日龄，随机区组设计，5个处理，8个重复，每个重复3只动物。在玉米-豆粕基础上饲喂5种日粮：阳性对照(PC)，添加无机磷和钙；阴性对照(NC)，有效磷降低0.13%，钙降低0.11%；NC饲粮中分别添加1000、2000和3000植酸酶单位(FYT)/kg。与不含植酸酶的对照组相比，添加1,000、2,000和3,000 FYT/kg组的日增重提高了12%(二次，p
The objective of this study was to evaluate the effect of increasing doses of bacterial phytase (RONOZYME HiPhos) on performance and carcass characteristics of growing and finishing pigs. The study included 120 castrated males with initial weight of 23.21 +/- 1.91 kg and 68 days of age, distributed in a randomized block design with five treatments and eight replicates with three animals each. The pigs were fed five corn-soybean meal-based diets: positive control (PC), supplemented with inorganic phosphorus and calcium; negative control (NC), with 0.13% reduction in available phosphorus and 0.11% in calcium; and three NC diets supplemented with 1,000, 2,000, and 3,000 phytase units (FYT)/kg in the feed. Compared with the NC diets without phytase, diets with 1,000, 2,000, and 3,000 FYT/kg inclusion increased the daily weight gain by +12% (quadratic, p