Liquid Type B and C medicated feeds containing melengestrol acetate must have a pH of 4.0 to 8.0 and their labels must bear appropriate mixing directions. Mixing directions for liquid Type B (or C) feeds stored in recirculation tank systems are: “Recirculate immediately prior to use for no less than 10 minutes, moving not less than 1 percent of the tank contents per minute from the bottom of the tank to the top. Recirculate daily, as directed in this paragraph even when the Type B (or C) feed is not used.” Mixing directions for liquid Type B and C feeds stored in mechanical, air or other agitation-type tank systems are: “Agitate immediately prior to use for not less than 10 minutes, creating a turbulence at the bottom of the tank that is visible at the top. Agitate daily, as directed in this paragraph, even when the Type B (or C) feed is not used.”
Intermediate premixes should not be made from HEIFERMAX® 500 except as a part of a continuous mixing operation to make a complete liquid Type B (or C) medicated feed.
Thoroughly mix 0.5 to 4 pounds of HEIFERMAX® 500 per ton of a non-medicated feed to prepare a Type C medicated feed containing 0.25 to 2.0 grams of melengestrol acetate per ton. The following table may be used as a guide in determining the amount of HEIFERMAX® 500 to be added to prepare a ton of Type C medicated feed.
Amount of
Type C Feed Fed
(lb/head/day)
Melengestrol
Acetate
(mg/head/day)
HEIFERMAX® 500 Liquid Premix
Per Ton of Type C Feed
When Added by
Weight (lb)
When Added by
Volume (mL)
0.5
0.25
2.00
876
0.5
0.30
2.40
1051
0.5
0.35
2.80
1226
0.5
0.40
3.20
1402
0.5
0.45
3.60
1577
0.5
0.50
4.00
1752
1.0
0.25
1.00
438
1.0
0.30
1.20
526
1.0
0.35
1.40
613
1.0
0.40
1.60
701
1.0
0.45
1.80
788
1.0
0.50
2.00
876
1.5
0.25
0.66
289
1.5
0.30
0.80
350
1.5
0.35
0.93
407
1.5
0.40
1.07
469
1.5
0.45
1.20
526
1.5
0.50
1.33
582
2.0
0.25
0.50
219
2.0
0.30
0.60
263
2.0
0.35
0.70
307
2.0
0.40
0.80
350
2.0
0.45
0.90
394
2.0
0.50
1.00
438
Type B medicated feed containing 4 to 10 grams melengestrol acetate per ton may be manufactured by thoroughly mixing 8 to 20 lbs of HEIFERMAX® 500 with 1992 to 1980 lbs of non-medicated feed. Labeling for such Type B feed shall contain directions for manufacturing Type C medicated feeds containing 0.25 to 2.0 grams melengestrol acetate per ton (0.125 to 1.0 mg/lb). The Type C medicated feed, containing melengestrol acetate, must be top dressed on grain or roughage or mixed with a complete ration at the rate of 0.5 to 2.0 pounds per head per day.
Good manufacturing practice regulations must be adhered to in manufacturing feeds containing HEIFERMAX® 500.
Restricted Drug — Use only as Directed (California)
Elanco, HeifermaX and the diagonal bar are trademarks owned or licensed by Eli Lilly and Company, its subsidiaries or affiliates.
Distributed by Elanco Animal Health, a Division of Eli Lilly and Company, Indianapolis, IN 46285, USA
To report adverse events, access medical information, or to obtain additional product information, call 1-800-428-4441
ANADA 200-343, Approved by FDA
