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不同的非传统料组合对乳牛生长,消化和乳头发酵的影响

Ming Chen¹, Mingan Dai², Qingjiang Wang³

¹School of Animal Science and Technology, Jiangsu Agri-animal Husbandry Vocational College, Taizhou, 225300, China. siliao0520032022@163.com.

Cellular and molecular biology (Noisy-le-Grand, France)

|June 10, 2023

概括

用玉米质料 (CGF) 和中国牛 (Leymus chinensis) 取代草干草,改善了奶牛的营养和功能. 11%的CGF群体显示了最高的营养摄入量,消化能力和经济效益,提高了奶牛养殖的利能力.

科学领域:

动物科学动物科学
类动物营养类动物营养
农业经济学农业经济学

背景情况:

研究非传统料对于优化奶牛饮食至关重要.
玉米质料 (CGF) 和中国牛 (Leymus chinensis) 提供了传统料的潜在替代品,如草.
了解这些替代物对皮功能和产量的影响,对于可持续的奶牛养殖至关重要.

研究的目的:

为了评估用不同比例的CGF和L. chinensis取代草干草对奶牛表现的影响.
评估对营养消化,新陈代谢和乳头发酵参数的影响.
为了确定这些非传统料组合的经济可行性.

主要方法:

荷尔斯泰因乳牛 (状,原和多) 接受了0%,7%和11%的CGF的食,用CGF和L. chinensis取代了部分草.
评估了料摄入量,营养物质消化能力,哺乳性能,血液生物化学指标和小肠退化参数.
分析了组合料的营养成分和经济效益.

主要成果:

而CGF的小肠中蛋白质消化能力高于草的干草.
11%的CGF组显示了显著更高的营养摄入量,消化能力,干物质降解率 (S,Kd) 和原蛋白降解率 (P<0.05).
11%的CGF集团产生了最高的总产值 (¥119.057/d) 和经济效益 (¥68.62/d).

结论:

在奶牛的饮食中,用CGF和L. chinensis的组合取代部分草干草是可行的.
这种饮食策略有效地增强了皮的降解和营养吸收,从而改善了产量.
CGF和L. chinensis的组合提供了显著的经济优势,有助于优化中国水产养殖行业的料结构.

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