Molecular Nutrition

Effects of Different Dietary Vitamin D3 Levels on Growth Performance and Bone Phosphorus Metabolic Utilization of Broilers

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  • Mineral Nutrition Research Division, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China

Received date: 2017-03-01

  Online published: 2017-09-08

Abstract

This experiment was conducted to investigate the effects of different dietary vitamin D3 (VD3) levels on growth performance and bone phosphorus metabolic utilization of broilers. A completely randomized factorial design involved two non-phytate phosphorus (NPP) contents[0.45% and 0.23% (the measured content was 0.44% and 0.21%, respectively)] and four VD3 supplemental levels (0, 1 000, 2 000, and 4 000 IU/kg). A total of 480 one-day-old Arbor Acres male broilers were allotted to 8 groups with 6 replicate cages of 10 broilers per cage for each group. The experiment lasted for 21 days. The results showed that the broilers fed diets containing 0.44% NPP had significantly higher average daily gain (ADG), average daily feed intake (ADFI), tibia ash content and its phosphorus content (P<0.05), while had significantly lower ratio of feed to gain (F/G) and tibia ash phosphorus absolute deposition rate (P<0.05) compared with the broilers fed diets containing 0.21% NPP. Dietary VD3 significantly enhanced ADG, ADFI during 15 to 21 days of age and 1 to 21 days of age, tibia ash content and its phosphorus absolute deposition rate of broilers (P<0.05), significantly decreased the F/G of broilers during 1 to 21 days of age (P<0.05) compared to the diet without addition of VD3. When the broilers fed diets containing 0.21% NPP, dietary VD3 significantly decreased the mortality of broilers (P<0.05), and significantly promoted tibia ash phosphorous weight of broilers at 21 days of age (P<0.05), while dietary 2 000 IU/kg VD3 significantly promoted tibia ash phosphorous weight of broilers at 14 days of age (P<0.05) compared to the diet without addition of VD3. When the broilers fed diets containing 0.44% NPP, dietary VD3 significantly enhanced tibia ash phosphorous weight of broilers compared to the diet without addition of VD3 (P<0.05). The results indicate that dietary VD3 can enhance the growth performance and decrease the mortality and promoted phosphorus metabolic utilization in bone of broilers.

Cite this article

WEN Qian, LYU Lin, ZHANG Liyang, LIAO Xiudong, LUO Xugang . Effects of Different Dietary Vitamin D3 Levels on Growth Performance and Bone Phosphorus Metabolic Utilization of Broilers[J]. Chinese Journal of Animal Nutrition, 2017 , 29(9) : 3099 -3108 . DOI: 10.3969/j.issn.1006-267x.2017.09.011

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