Using MGA

Using MGA

Angus Journal
Provided by the National Association of Animal Breeders (NAAB)

Melengestrol acetate — widely known as MGA — is the common denominator in three widely used systems for synchronizing and artificially inseminating (AIing) cows and heifers. MGA, which is fed with grain or protein and is often top-dressed on other feeds, suppresses estrus and prevents ovulation in cows and heifers. It’s fed at a rate of 0.5 milligrams (mg) per animal per day in a single daily feeding.

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