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Table 5 Serum retinoid concentrations and mRNA expression of genes involved in retinoid metabolism in intramuscular fat of 2 months old of calves receiving different doses of vitamin A treatments

From: Vitamin A administration at birth promotes calf growth and intramuscular fat development in Angus beef cattle

Response 0 IU (n = 9) 150,000 IU (n = 7) 300,000 IU (n = 9) SE P-value
Serum retinoid content
 Retinoic acid, pmol/mL 7.05b 13.16a 11.02a 0.81 < 0.001
 Retinaldehyde, pmol/mL 10.51 13.26 11.71 1.28 0.348
 Retinol, nmol/mL 1.14ab 1.21a 0.94b 0.06 0.026
mRNA abundance of enzymes (Arbitrary unit)
ADH4, relative expression 1.00 0.68 0.35 0.14 0.184
ADH5, relative expression 1.00 2.01 1.82 0.21 0.123
ALDH1A1, relative expression 1.00 1.71 1.35 0.20 0.369
  1. a-bMeans in the same row with different letters differ significantly (P < 0.05)