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在没有的饮食中,高粉素与粉素的比率降低了 brojler chickens 的内源性氨基酸损失

Huajin Zhou¹, Tahir Mahmood², Wei Wu¹

¹State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.

Animal nutrition (Zhongguo xu mu shou yi xue hui)

|June 30, 2023

概括

在无饮食 (NFD) 中增加粉糖与粉素 (AM/AP) 的比率,减少了的内生氨基酸 (IEAA) 损失. 对于准确的IEAA测量,建议在NFD中使用0.60的AM/AP比率.

科学领域:

动物营养和新陈代谢
禽畜科学是一门学科.
胃肠道生理学胃肠道生理学

背景情况:

准确地确定内源性氨基酸 (IEAA) 损失对于制定精确的家禽饮食至关重要.
无饮食 (NFD) 用于估计IEAA,但它们的组成,特别是粉素与粉素 (AM/AP) 的比例,可以影响结果.

研究的目的:

调查NFD中变化的AM/AP比率对IEAA在 brojler中的损失的影响.
为了确定NFD中最佳的AM/AP比率,以便可靠的IEAA估计.
评估不同AM/AP比对肠道形态,消化酶活性和肠道微生物群的影响.

主要方法:

252只肉被食不同AM/AP比率 (0.20至1.00) 的饮食或控制饮食3天.
测量包括IEAA损失,粉和干物质 (DM) 消化能力,马尔塔酶活性,肠道组织学 (杯状细胞,小毛病高度,密室深度) 和阴道微生物群组成.
分析了粘素-2和克鲁佩尔样因子4 (KLF-4) 的基因表达,以及血清激素水平 (葡萄糖,甲状腺素).

主要成果:

增加AM/AP比率线性降低了IEAA损失,粉消化能力和马尔塔酶活性,而DM消化能力显示线性和二次性下降.
通过增加杯状细胞和相关的基因表达 (mucin-2,KLF-4),NFDs改变了肠道形态,但降低了的高度和密室深度.
较低的AM/AP比率 (0.20,0.40) 减少了肠道微生物的丰富性,增加了蛋白质细菌,并减少了Firmicutes. 0.60的AM/AP比率显示结果最接近对照饮食.

结论:

在NFD中较高的AM/AP比率减少了IEAA的损失,但可能导致营养不良和肠道失调.
在NFD中建议AM/AP比率为0.60,用于肉,以最大限度地减少IEAA损失并保持肠道平衡.
饮食中的AM/AP比率显著影响肠道生理学和微生物群,影响IEAA测定的准确性.

关键词:

氨基菌素是一种氨基菌素.氨基酸氨基酸是什么肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉肉内生氨基酸的损失氨基酸的内生损失玻璃杯细胞是什么?没有的饮食.

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