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外源植物酶相对于肉中单酸中的相等价值
Jung Yeol Sung1, Brittney J Emmert1, Darrin M Karcher1
1Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA.
Poultry science
|November 25, 2023
概括
外源植物酶补充剂改善了肉的生长,的消化能力和骨质. 植物酶在1000FYT/kg相当于从单酸 (MSP) 获得的1.2-1.5g/kg的无机.
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:
- (P) 是肉必需的矿物质,但其从植物性饮食中获得的数量有限.
- 外源植物酶可以降解植物酸盐,释放P并改善其利用.
- 了解植物酶与酸 (MSP) 等无机P来源的P等值对于饮食配方至关重要.
研究的目的:
- 为了确定外源植物酶相对于来自肉的单酸盐 (MSP) 的无机P的 (P) 等值.
- 评估饮食中MSP或外源植物酶对生长性能,乳腺P消化能力和骨特征的影响.
主要方法:
- 制定了六种饮食:缺乏P的基础饮食,MSP的基础+0.9或1.8g/kg无机P,以及基础+500,1,000或2,000 FYT/kg外源植物酶.
- 576只雄性肉从化后的第8天到第18天被食这些饮食.
- 测量了生长性能,状体P消化能力,骨折强度和骨灰.
主要成果:
- 体重增加和增加到料的比率随着MSP或植物酶水平的增加而增加.
- 在第11天和第18天,Ileal P的消化能力随着植物酶度的增加而增加.
- 骨折强度和骨灰线性增加随着MSP或植物酶含量增加.
- 1,000 FYT/kg 植物酶相当于11日的1.5g/kg 无机P,18日的1.2g/kg,这取决于内可消化的P度.
结论:
- 补充MSP或外源植物酶可以提高肉的生长性能,P消化能力和骨参数.
- 外源植物酶有效地增加了玉米-大豆基饮食中的P的生物可用性.
- 外源植物酶的P等值为优化肉营养和减少P排泄提供了有价值的数据.
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