Effects of feeding β-carotene on levels of β-carotene and vitamin A in blood and tissues of beef cattle and the effects on beef quality

β-carotene as a dietary factor affecting expression of genes connected with carotenoid, vitamin A and lipid metabolism in the subcutaneous and omental adipose tissue of beef cattle

“…Similarly, the effects of βC supplementation on BCMO1, PPARγ and RXRα gene and protein expressions stated in the present study showed that there is a close relationship between carotenoids and fat metabolism in beef cattle, which was also found in our previous study (Jin et al, 2016). Adipose tissue was reported to be an important place for βC storage (Yang et al, 1992;Reynoso et al, 2004), which was also confirmed by our previous research (Jin et al, 2015). In the present study, the higher expression of BCMO1 and BCO2 in βC supplemented groups in subcutaneous and omental adipose tissue may be caused by higher content of βC reported by Jin et al (2015), however the lack of differences among the supplemented groups may indicate a limited βC metabolism capacity of adipose tissue.…”

“…Interestingly, our previous study showed that supplementing βC up to 600 mg/d could increase concentrations of βC in subcutaneous and omental fat (Jin et al, 2015). Moreover in the present study the βC supplementation up-regulated the two βC catabolism related genes BCMO1 and BCO2, which illustrates the capability of adipose tissues in βC storage and catabolism.…”

“…Cattle were fed twice daily (06:00 and 16:00) and each dose of βC was weighed every day for each animal, mixed with concentrate and split between two feeds. For more details about animals and management see Jin et al (2015;.…”

Effect of feeding rice whole crop silage on growth rate, levels of vitamin A, β‐carotene, vitamin E and IGF‐1 in plasma and skeletal muscle protein degradation in Japanese black calves

“…Jin et al. () reported that feeding β‐carotene did not affect the serum retinol concentration. A large portion of the supplemental β‐carotene was absorbed in its intact form and transported to the liver, where a portion of it was converted into retinol and stored because the animal did not lack vitamin A (Jin et al., ).…”

“…() reported that feeding β‐carotene did not affect the serum retinol concentration. A large portion of the supplemental β‐carotene was absorbed in its intact form and transported to the liver, where a portion of it was converted into retinol and stored because the animal did not lack vitamin A (Jin et al., ). This suggests that feeding RWCS increased the plasma β‐carotene concentration, but because plasma vitamin A was not lacking, the plasma vitamin A concentration was not increased by feeding RWCS.…”