Calf growth and health benefit from organic selenium and vitamin E, according to a study from
During the study, the researchers evaluated the effect of selenium source and vitamin E dosage on calf growth, performance and immune response. To do that, they assigned calves to one of four treatment groups:
1) 0.3 parts per million (ppm) organic selenium and 1,000 IU of vitamin E per day.
2) 0.3 ppm inorganic sodium selenite and 1,000 IU of vitamin E per day.
3) 0.3 parts per million organic selenium and 250 IU of vitamin E per day.
4) 0.3 ppm inorganic sodium selenite and 250 IU of vitamin E per day.
Calves received their assigned treatment for 85 days. It was incorporated into their milk replacer and starter grain. Here is a snapshot of the results:
- Calves enrolled in treatment 4 gained less weight per day than calves in treatment 2 (1.74 pounds per day versus nearly 2.14 pounds per day.)
- Treatment 4 calves ate nearly 6 pounds of feed per pound of gain, which is a higher feed-to-gain ratio than that of calves in treatment 1. Those calves ate 4.4 pounds of feed per pound of gain.
- Calves in treatment 1 had the least number of sick days. Calves in treatment 4 had the greatest number of sick days.
Abstract #314, American Dairy Science Association