Login / Signup

Effects of 25(OH)VD 3 on Growth Performance, Pork Quality and Calcium Deposit in Growing-Finishing Pigs.

Zeyu ZhangGang ZhangJindang CaoBaoqin QiuXiaoyu QinJinbiao Zhao
Published in: Animals : an open access journal from MDPI (2022)
The study was conducted to evaluate the effects of 25(OH)VD 3 with different inclusion levels of 0, 25, 50 and 75 μg/kg in the diet on growth performance, nutrient digestibility, bone properties and pork quality in growing-finishing pigs. The results showed that the average daily gain ( p < 0.05) and body weight ( p < 0.10) of pigs showed a trend of increasing quadratically as inclusion levels of 25(OH)VD 3 increased. Dietary supplementation of 50 μg/kg 25(OH)VD 3 increased calcium digestibility compared with the 0 μg/kg group ( p < 0.05), and calcium and phosphorus digestibility increased quadratically as inclusion levels of 25(OH)VD 3 increased ( p < 0.05). Dietary supplementation of 50 μg/kg 25(OH)VD 3 increased concentrations of polyunsaturated fatty acids, and decreased contents of saturated and monounsaturated fatty acids in the longissimus dorsi of pigs ( p < 0.05). The addition of 25, 50 and 75 μg/kg 25(OH)VD 3 to the diet increased breaking strength and bone stiffness in the tibia compared with the 0 μg/kg group ( p < 0.05). Dietary supplementation of 50 μg/kg 25(OH)VD 3 improved the activities of superoxide dismutase (SOD) and catalase (CAT), and increased the messenger RNA (mRNA) expression of Cu/Zn SOD in the longissimus dorsi compared with the 0 μg/kg group ( p < 0.05). Supplementing 50 μg/kg 25(OH)VD 3 improved the mRNA expression of calcium-binding protein D9k (CaBP-D9k) and D28k (CaBP-D28K) in the liver compared with the 0 μg/kg 25(OH)D 3 group ( p < 0.05). In conclusion, a diet with an added dose of 50 μg/kg 25(OH)VD 3 showed a greatest growth performance of growing-finishing pigs, and 25(OH)VD 3 enhanced calcium deposition and antioxidant capacity in the longissimus dorsi, which may be associated with improved expression of calcium ion channel proteins.
Keyphrases
  • physical activity
  • binding protein
  • weight loss
  • fatty acid
  • bone mineral density
  • risk assessment
  • body composition
  • long non coding rna