食蛋白酶能否改善在以低消化氨酸饮食养的 brojlers 的性能和肠道完整性?
Shahram Golzar Adabi1, Hamid Raei2, Mohammad Amir Karimi Torshizi2
1AVESA Research & Consultancy, Ankara, Türkiye.
Poultry science
|September 12, 2025
概括
在肉饮食中补充蛋白酶 (PROT),减少可消化素 (dLys),改善了生长性能和肠道健康. 在肉中,PROT减轻了较低DLys水平对肉的负面影响,提高了整体性能和肠道完整性.
科学领域:
- 动物科学动物科学
- 营养科学 营养科学
- 禽畜科学 禽畜科学 禽畜科学
背景情况:
- 可消化氨酸 (dLys) 是肉生长的关键氨基酸.
- 蛋白酶 (PROT) 补充剂可以增强营养利用和肠道健康.
- 了解DLys水平和PROT之间的相互作用对于优化 brojler营养至关重要.
研究的目的:
- 研究可消化氨酸 (dLys) 水平的变化和蛋白酶 (PROT) 补充对肉的表现,血清参数,营养消化能力和肠道完整性的影响.
- 确定PROT是否可以抵消DLys水平降低对肉的潜在负面影响.
- 在各种生理和肠道参数上分析dLys和PROT之间的相互作用.
主要方法:
- 使用了一个完全随机的设计,使用了1,024只雄性罗斯308肉.
- 在一个4 × 2因子排列的8次治疗中,测试了4个dLys水平 (100%至95.5%的建议) 和2个PROT水平 (0或125 mg/kg).
- 评估性能 (BWG,FI,FCR),血清参数,营养消化能力,状组织形态学和肠道微生物群.
主要成果:
- 在生长性能,血清参数,营养消化能力和肠道完整性方面观察到dLys和PROT之间的显著相互作用.
- 降低dLys水平 (97%和95.5%) 影响了生长性能和肠道形态.
- 减少dLys饮食中的PROT补充剂改善了体重增加,料转化率,状组织形态学和肠道微生物群组成.
结论:
- 将饮食dLys降低到低于菌株建议的水平,会对肉的表现和肠道健康产生负面影响.
- 蛋白酶补充剂有效地减轻dLys降低的不良影响,改善肉的肠道完整性和整体性能.
- 优化dLys和PROT的平衡对于最大限度地提高肉生产效率和健康至关重要.
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