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确定生长猪的最佳能源系统和水平

Sangwoo Park¹, Jeehwan Choe², Jin Ho Cho³

¹Department of Animal Science, University of California, Davis, CA 95616, USA.

Journal of animal science and technology

|July 8, 2024

概括

饮食能量系统和水平并没有显著影响生长猪的性能或营养素消化能力. 然而,更高的能量水平增加了以太提取物,酸化以太提取物和酸洗剂纤维的可消化度.

科学领域:

动物营养动物营养
猪生理学猪生理学
料科学料科学

背景情况:

优化生长猪饮食中的能量系统和水平对于高效的营养利用至关重要.
了解可代谢能量 (ME) 与净能量 (NE) 系统以及不同能量密度的影响对于料配方至关重要.

研究的目的:

评估不同能源系统 (ME与NE) 和能量水平 (低,推,高) 对生长猪生长表现的影响.
为了在这些饮食治疗中比较营养消化能力和可消化的营养度.

主要方法:

实验1:144头生长中的猪 (26.69±7.39公斤体重) 经过2×3的因数排列 (ME/NE x LE/C/HE) 进行6周的6种饮食.
实验2:12只生长中的猪 (27.0±1.8公斤体重) 在复制的6x6拉丁方形设计中被食相同的六种饮食,以评估营养消化能力.

主要成果:

在能量系统或水平之间没有观察到生长性能 (BW,ADG,ADFI) 或大多数营养物质消化率的显著差异.
以太提取物,酸化以太提取物 (AEE) 和酸洗剂纤维 (ADF) 的可消化度随着饮食能量水平的提高而显著增加 (p < 0.05).
通过更高的能量含量,可消化原蛋白增加的趋势 (p = 0.09) 被观察到.

结论:

能量系统 (ME与NE) 和能量水平的适度变化不会显著改变生长猪的生长性能或营养消化能力.
较高的饮食能量水平可以增加关键营养素的可消化度,如以太提取物和纤维.
在聚焦可消化的营养度时,饮食能量水平的大幅变化可能是必要的,以引起生长性能和营养物质消化的显著变化.

关键词:

能量集中能量集中能量集中能量水平能量水平能源系统能源系统养猪生长的猪是什么意思代谢反应的反应能源净值是指能源净值.

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