NADA Number: 138-995 | |
| Proprietary Name |
MGA® 200 / Tylan® MGA® 100 / Tylan® |
|---|---|
| Sponsor |
Pharmacia & Upjohn Co. |
| Sponsor Address |
a Division of Pfizer, Inc. 235 East 42nd St. New York, NY 10017 USA |
| Ingredients |
Melengestrol Acetate Tylosin Phosphate |
| Species |
Cattle, beef, heifers |
| Routes of Administration |
Per Os |
| Dose Form |
Medicated feed |
| Drug Form |
Type A Medicated Article |
| Dispensing Status |
OTC |
| Exclusivity |
This OTC approval is to be used as an aid for increased rate of weight gain, improved feed efficiency, suppression of estrus and reduced incidence of liver abscesses in heifers fed in confinement for slaughter. The liquid combination is approved for use in feed at concentrations of MGA:0.125-1.0 mg/lb and TP: 8-10 g/t. |
|
Dosage Amount, Indications & Limitations |
558.342 Melengestrol acetate. Specifications: Dry Type A medicated articles containing 100 or 200 milligrams per pound or liquid Type A article containing 500 milligrams per pound Conditions of use: Cattle (heifers) Amount: Melengestrol acetate, 0.25 to 0.50 milligram per head per day, plus tylosin (as tylosin phosphate), 90 milligrams per head per day. To attain this amount: Add 0.5 to 2.0 pounds per head per day of a liquid or dry medicated feed containing 0.125 to 1.0 milligram of melengestrol acetate per pound to a medicated feed containing 8 to 10 grams of tylosin per ton; or Add 0.5 to 2.0 pounds per head per day of a liquid or dry medicated feed containing 0.125 to 1.0 milligram of melengestrol acetate per pound to 4.5 to 18 pounds of a dry medicated feed containing 10 to 40 grams of tylosin per ton; or Add 0.5 to 2.0 pounds per head per day of a dry medicated feed containing 0.125 to 1.0 milligram of melengestrol acetate (from a dry Type A article) plus 45 to 180 milligrams of tylosin per pound to a ration of non-medicated feed. Indications: For increased rate of weight gain, improved feed efficiency, suppression of estrus (heat), and reduced incidence of liver abscesses. Limitations: For heifers being fed in confinement for slaughter. |
| Tolerances |
Tolerances are established for residues of tylosin in edible products of animals as follows: a. Chickens and turkeys: 0.2 part per million (negligible residue) in uncooked fat, muscle, liver, and kidney. b. Cattle: 0.2 part per million (negligible residue) in uncooked fat, muscle, liver, and kidney. c. Swine: 0.2 part per million (negligible residue) in uncooked fat, muscle, liver, and kidney. d. Milk: 0.05 part per million (negligible residue). e. Eggs: 0.2 part per million (negligible residue). A tolerance of 25 parts per billion is established for residues of the parent compound, melengestrol acetate, in fat, of cattle. |