低蛋白饮食会影响中等生长的黄羽毛肉的矿物质吸收和利用,年龄从1到30天
Xiaoran Li1, Chong Wang1, Shunying Li1
1Mineral Nutrition Research Division, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
Poultry science
|November 10, 2024
概括
减少肉的食蛋白质改善了的保留和矿物质的吸收,增强了抗氧化能力,而不会影响生长. 这项研究强调了低蛋白饮食对肉营养和矿物质代谢的好处.
科学领域:
- 动物营养 动物营养
- 禽畜科学 禽畜科学 禽畜科学
- 生物化学 生物化学
背景情况:
- 减少蛋白质的饮食可以减少 (N) 的损失,并保存蛋白质成分.
- 低蛋白饮食对肉矿物质吸收和利用的影响需要进一步研究.
- 了解这些影响对于优化 brojiler料配方至关重要.
研究的目的:
- 研究低蛋白饮食对肉生长表现,沉积和矿物质含量的影响.
- 为了分析与肉的矿物代谢相关的酶活动和基因表达,食低蛋白饮食.
- 为了阐明饮食中的蛋白质含量和矿物质吸收/利用在中等生长的黄色羽毛肉之间的关系.
主要方法:
- 72只一天大的公被分配给两种饮食治疗:21%的原蛋白 (CP) (控制) 和19%的CP (低蛋白).
- 这项实验持续了30天.
- 测量包括生长性能,保留,血清和组织矿物质含量,排泄物矿物质含量,酶活性和基因表达.
主要成果:
- 没有观察到生长表现的显著差异 (平均每日增长,料摄入量,料:增长比率).
- 低蛋白摄入量增加了的保留率,血清 (P),铜 (Cu) 和 (Mn),以及便中的Cu,Mn和 (Zn).
- 低蛋白饮食增强了抗氧化酶活动 (超氧化物脱酶,总超氧化物脱酶) 和总抗氧化能力,同时降低了铜超氧化物脱酶 (CuZnSOD) 活动和mRNA水平.
结论:
- 将食CP从21%降低至19%,改善了肉中留和P,Cu和Mn的吸收.
- 低蛋白饮食增强了肝脏和心脏的抗氧化能力.
- 减少饮食中的蛋白质影响了年轻肉的P,Cu,Zn,铁 (Fe) 和Mn的代谢利用.
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