فهرست نشریات علمی دسترسی آزاد ایران

Infection is the most important reason for mortality in suckling calves, and their susceptibility to it. Animals can synthesize L-ascorbic acid (or Vitamin C) from D-glucose or D-galactose through the glucuronic acid pathway in the liver or the kidneys. To prevent ruminal degradation and oxidation, vitamin C is coated, or coated with cellulose, sodium ascorbate, and silicate. This study aims to investigate the effects of micellized vitamin C supplementation on the growth performance and blood parameters of suckling calves. 24 neonatal Holstein calves with an average age of 3 days and an average weight of 39 ± 2.2 kg with 4 experimental diets (6 repeat/ each) were used completely randomly. The experimental diets include: 1) control (free vitamin C), 2) basic diet with 1 gram of powdered vitamin C (PVC) soluble in milk, 3) basic diet with 10 ml of the MVCS (emulsion soluble in milk with 5% edible oil), and 4) basic diet with 10 ml of the MVCS (emulsion soluble in milk with 10% edible oil). Adding the MVCS could have an insignificant effect on body weight, average daily weight gain, and feed efficiency of suckling calves. At 30 and 60 days old, adding the MVCS increased the feed intake compared to the control diet. Likewise, in the entire rearing period, the use of the MVCS with 5% and 10% oil increased the feed intake compared to the control diet and the PVC receiving group (P<0.05). In general, it can be concluded that the use of the MVCS did not affect body weight, average daily weight gain, and feed efficiency, but it improved the feed intake of suckling calves. The MVCS with 5 and 10% oil increased the triglycerides, cholesterol, and vitamin C blood concentration and did not affect the blood concentration of albumin, total protein, malondialdehyde, and antioxidant capacity. It is concluded that the addition of the micellized vitamin C supplement improved blood vitamin C concentration as an antioxidant and enhanced growth performance.