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首页> 外文期刊>African Journal of Biotechnology >Effects of supplemental microbial phytase enzyme on performance and phytate phosphorus digestibility of a corn-wheat-soybean meal diet in broiler chicks
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Effects of supplemental microbial phytase enzyme on performance and phytate phosphorus digestibility of a corn-wheat-soybean meal diet in broiler chicks

机译：补充微生物植酸酶对肉鸡玉米-小麦-豆粕日粮生产性能和植酸磷消化率的影响

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摘要

This experiment was conducted to investigate the effects of supplemental phytase in a corn-wheat-soybean meal basal diet on phosphorus (P) digestibility and performance of broiler chicks. 378 one-day old broiler chicks (Ross 308) were allocated to 3′3 factorial arrangements with three levels of phytase enzyme (0, 500 and 1000 FTU/kg) and three levels of non-phytate P (100, 80 and 60% of NRC requirements). Broiler chicks received experimental diets from 7 to 49 days of age.Phytase significantly (P < 0.05) improved body weight gain and feed intake. Tibial ash and P contents increased significantly by phytase supplementation. Ileal P digestibility increased and P excretion reduced by added phytase. The greatest response due to supplemental phytase regarding P digestibility and utilization was obtained at the lowest dietary non-phytate P (NPP) level (60% of NRC requirements). Difference between various levels of added phytase (500 and 1000 FTU/kg) regarding P excretion and utilization was not significant. The interactions between supplemental phytase and dietary NPP for P utilization, tibial ash and P contents were significant (P < 0.05). The results indicate that, supplemental microbial phytase (500 FTU/kg of diet) added to diet containing NPP lower than NRC requirements (60%) can improve growth performance, tibial ash and phytate P utilization in broiler chickens.
机译：进行该实验以研究玉米-大豆-豆粕基础日粮中补充植酸酶对肉鸡磷（P）消化率和生产性能的影响。将378只一天大的肉仔鸡（Ross 308）分配给3'3因子安排，具有三级植酸酶（0、500和1000 FTU / kg）和三级非植酸磷（100、80和60％ NRC要求）。肉仔鸡从7到49天龄接受实验饮食，磷酸酶显着（P <0.05）改善了体重增加和采食量。补充植酸酶可显着增加胫骨灰分和磷含量。回肠中磷的消化率增加，而植酸酶则减少磷的排泄。在最低的膳食非植酸磷（NPP）水平（NRC要求的60％）下，由于补充植酸酶对磷的消化率和利用率产生了最大的响应。添加的植酸酶的不同水平（500和1000 FTU / kg）之间关于磷的排泄和利用的差异不显着。植酸酶和日粮NPP之间的交互作用对磷利用，胫骨灰分和磷含量具有显着影响（P <0.05）。结果表明，向日粮中添加NPP低于NRC要求（60％）的补充微生物植酸酶（500 FTU / kg日粮）可以改善肉鸡的生长性能，胫骨灰分和植酸磷的利用率。

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