Melengestrol Acetate - MIB #46

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Date Revised: 2006-09

Approved Brands

1. MGA 100 PREMIX contains melengestrol acetate at 220 mg/kg (Pfizer Canada Inc.)

Approved for use

In meal or pellet feed for beef cattle (heifers only).

Approved claims

For beef cattle (heifers only) - Claim 1

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Claim 1: For improved growth rate and feed efficiency, and as an aid in suppression of estrus in beef heifers being fed for slaughter.

Level of Drug:

0.40 mg per beef heifer per day

Directions:

Feed this feed containing melengestrol acetate according to directions so that each animal will receive 0.40 mg of melengestrol acetate per head per 24-hour.

Warning:

1. Discontinue the use of this feed containing melengestrol acetate at least 24 hours before slaughter.
2. Do not feed melengestrol acetate containing feeds to heifers implanted with or being fed other hormone drugs.

Caution:

1. Only for use in intact heifers 181 kg and over being fed for slaughter. Not effective in spayed heifers or steers.
2. Do not use in feeds containing pellet binding agents with the exception of lignin sulfonate (Required only on premix and supplement labels).

Note:

Labels must show this statement: Beef heifer cattle feed or supplement containing ...% melengestrol acetate to be fed at ... kg per head per day to beef heifers 181 kg and over being fed for slaughter.

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Accepted Compatibilities

Melengestrol acetate is compatible with the following drug/drug combinations. For details refer to the MIB as indicated.

Number	Medicated ingredients	For use in feed for
1.	Monensin sodium (MIB #57)	beef heifers
2.	Lasalocid sodium (MIB #66)	beef heifers (feedlot)
3.	Salinomycin sodium (MIB #69)	beef heifers fed in confinement for slaughter