不同维生素D3配合日粮对肉仔鸡胫骨发育和营养代谢的影响

Effects of Different Diets of Vitamin D3 on Tibia Development and Nutritional Metabolism in Broilers

摘要:

VD₃作为调节家禽钙磷代谢、促进钙化的重要物质，在家禽饲料中有着广泛的应用。但因日光照射程度的影响，动物体内的VD₃生成量非常有限，难以满足家禽生长过程中的需求。为此本文就不同水平25-OH-D₃与VD₃组合日粮对肉仔鸡胫骨发育和营养物质代谢情况进行研究，结果发现在相同营养水平条件下添加25-OH-D₃69 μg/kg、VD₃1 380 IU/kg时肉仔鸡胫骨发育和营养物质代谢均有程度不同的提高，但是超量添加时受到抑制，由此表明适量25-OH-D₃和VD₃的添加能有效改善肉仔鸡生长发育状况，为提高生产性能奠定良好的基础。

Abstract:

As an important substance to regulate calcium and phosphorus metabolism and promote calcification in poultry, VD₃ has been widely used in poultry feed. However, due to the impact of sunlight exposure, the amount of VD₃ produced in animals is very limited, which is difficult to meet the needs of poultry during growth. Therefore, this paper studies the development of tibia and nutrient metabolism of broiler chickens with different levels of 25-OH- D₃ and VD₃ combined diets. The results showed that under the same nutrient level, the development of broiler tibia and nutrient metabolism in broilers were improved to varying degrees when supplemented with 25-OH-D₃ 69 μg/kg and VD₃1 380 IU/kg, but they were inhibited when supplemented in excess. This indicated that the appropriate addition of 25-OH-D₃ and VD₃ at the age of day can effectively improve the growth and development of broilers, which can lay a good foundation for improving production performance.