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不同颗粒大小的clinoptilolite在料或笔表面的应用:对料场牛的气利用和肥氨排放的影响

Cheyanne A Myers¹, Mario E de Haro Marti², Mireille Chahine³

¹Department of Animal, Veterinary, and Food Sciences, University of Idaho, Moscow, ID 83843, USA.

Journal of animal science

|August 10, 2024

概括

将400μm的clinoptilolite (CLN) 给养场牛的方法减少了肥氨排放,但表面应用是无效的. 此外,CLN还改变了矿物质的分泌,影响了营养素的生物可用性.

科学领域:

动物科学动物科学
农业科学农业科学
环境科学环境科学

背景情况:

牛的氨 (NH3) 排放有助于环境污染.
克林诺皮托莱特 (CLN) 是一种以其减轻NH3排放的潜力而被探索的热带矿物.
CLN的颗粒大小可能会影响其在动物食和便管理中的有效性.

研究的目的:

调查食中的克林诺皮托利特 (CLN) 颗粒大小对牛发酵,利用和肥NH3排放在养场牛中的影响.
评估直接CLN应用在笔表面的有效性,以减少便NH3排放.

主要方法:

一个复制的3x3拉丁方形设计与六个牛牛被使用.
饮食治疗包括对照 (CON) 和CON补充30μmCLN (CLN-30) 或400μmCLN (CLN-400).
测量了便的NH3排放,反动物发酵,利用率和矿物质分泌量. 此外,还测试了CLN对笔表面的直接应用.

主要成果:

与CON和CLN-30相比,食400μmCLN (CLN-400) 导致累计肥NH3排放量较低.
对于CLN-30而言,内NH3度低于CON,但对于CLN-400则没有.
对于CLN-30,尿中的N排泄量较低,而尿中的NH3-N排泄量对于CLN-400更大.
便中的K和Fe分泌量增加,尿中的Ca分泌量随着CLN养而减少.
将CLN直接应用于笔表面并没有减少NH3排放.

结论:

将400μm的CLN给牛可以减少便的NH3排放.
CLN的颗粒大小对于其在养时降低NH3排放的有效性至关重要.
矿物质生物可用性 (K,Ca,Fe) 的潜在降低在将CLN纳入牛食中时需要考虑.

关键词:

克林诺皮托利特颗粒的颗粒大小料场的牛料场的牛便中的氨排放量利用率的使用.

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