补充25-hydroxycholecalciferol与不同饮食可用的含量对 brojlers的效果
L S Bassi1, F A Moreno1, C C S Martins2
1Department of Animal Science, Federal University of Paraná, Curitiba, Brazil.
British poultry science
|November 3, 2023
概括
补充25-基醇 (25-OH-D3) 的 brojler 料可以改善矿物质的消化能力和生长性能. 这可以降低可用的 (AvP) 水平,而不会对 brojler 的健康或骨发育产生负面影响.
科学领域:
- 动物营养 动物营养
- 禽畜科学 禽畜科学 禽畜科学
- 营养生物化学 营养生物化学
背景情况:
- 饮食中可获得的 (AvP) 对于肉生长和骨健康至关重要.
- 25-基胆硫醇 (25-OH-D3) 是维生素D3的代谢物,可以增强营养利用率.
研究的目的:
- 为了研究25-OH-D3补充剂对肉性能和矿物消化能力在不同的AvP水平下的影响.
- 为了确定25-OH-D3是否可以减轻低AvP饮食的负面影响.
主要方法:
- brojlers (1-21天) 被食四种AvP水平 (0.36%-0.45%) 的饮食,有或没有69μg/kg的25-OH-D3.
- 评估了料摄入量,体重增加,料转化率 (FCR),Ca和P的内皮消化能力,血清代谢物和骨矿物质含量.
主要成果:
- 25-OH-D3补充剂增加了料摄入量,体重增加和Ca/P质消化能力,同时降低了FCR.
- 增加AvP线性地降低了Ca和P的消化能力,但增加了骨中的P含量.
- 25-OH-D3改善了血清代谢物和骨灰含量,特别是在较低的AvP水平下.
结论:
- 25-OH-D3可以提高肉的Ca和P利用率和维生素D状态.
- 补充25-OH-D3可以将饮食中的AvP降低到0.36%,而不会影响生长或骨质.
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