来自多个国家的棕谷粉的营养成分,校正的真实代谢能量和标准化的氨基酸消化能力
J A Blair1, J L Emmert1, C M Parsons1
1Department of Animal Sciences, 284 Animal Sciences Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States.
Poultry science
|December 27, 2024
概括
棕核粉 (PKM) 在不同国家显示不同的营养含量. 它的校正的真实代谢能量 (TME) 和氨基酸消化能力有很大差异,影响其在动物料中的使用.
科学领域:
- 动物营养 动物营养
- 料科学 料科学
- 农业化学 农业化学
背景情况:
- 棕核粉 (PKM) 是棕油生产的副产品.
- 它的营养价值对于动物料配方至关重要.
- PKM组成的变化可能会影响动物的表现和料效率.
研究的目的:
- 来自五个国家的PKM进行了广泛的营养分析.
- 评估PKM样品的校正的真实代谢能量 (TMEn) 和标准化的氨基酸 (AA) 消化能力.
- 为了确定TMEn和AA可消化的变化,在不同的PKM来源内和之间.
主要方法:
- 两次精准养试验使用常规和切除的单白色莱戈恩.
- 在作物输管前26小时禁食,用25g的PKM样本.
- 在输液后48小时收集排泄物,冷干燥,随后对TMEn和AA消化能力进行分析.
- 使用单向ANOVA和最小显著差异测试 (P <0.05) 的统计分析.
主要成果:
- 在干燥物质基础上,PKM样本平均含有14%的原始蛋白质,7.5%的脂肪和64%的中性清洁剂纤维.
- 平均TMEn为2082千卡/千克 (DM基础),范围为1644到2511千卡/千克.
- 平均标准化的氨基酸消化率值 (%) 是:氨酸 (47%),氨酸 (73%),氨酸 (47%) 和三氨酸 (65%).
- 在来自不同国家的PKM样本中观察到TMEn和AA消化的显著变化.
结论:
- 在其营养成分中,PKM表现出相当大的变化,包括TMEn和可消化的氨基酸水平.
- 这种变异性需要仔细考虑PKM采购和分析,以获得最佳的动物料配方.
- 可能需要进一步的研究来了解导致这种变化的因素,并制定标准化策略.
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