Indications for Use: Complete Type C Medicated Feeds: For increased rate of weight gain, improved feed efficiency and increased carcass leanness in growing beef steers and heifers fed in confinement for slaughter during the last 28 to 42 days on feed. Not for use in cattle intended for breeding.
Type C Top-Dress Medicated Feeds: For increased rate of weight gain and improved feed efficiency in growing beef steers and heifers fed in confinement for slaughter during the last 28 to 42 days on feed. Not for use in cattle intended for breeding. Note: Increased carcass leanness is not an approved indication for use with Top-Dress Feeding.
Approved Concentrations of Ractopamine Hydrochloride in Complete Type C Medicated Feeds
| a Based on 90% Dry Matter Basis |
Indications for Use | Concentration of Ractopamine Hydrochloride in Type C Medicated Feed a
| Ractopamine HCl (mg/hd/d) |
Increased Rate of Weight Gain, and Improved Feed Efficiency | 8.2 to 24.6 g/ton (9 ppm to 27 ppm) | 70-430 |
Increased Rate of Weight Gain, Improved Feed Efficiency, and Increased Carcass Leanness | 9.8 to 24.6 g/ton (11 ppm to 27 ppm) | 90-430 |
| a NC = No Change, ↑ = Increased, ↓ = Decreased |
| b Steers Only |
| c Reduction indicates an improvement in USDA Yield Grade. |
Carcass Measurements | Effect of Ractopamine Hydrochloride a
|
8.2 grams/ton (9 ppm) | 16.4 grams/ton (18 ppm) | 24.6 grams/ton (27 ppm) |
Hot Carcass Weight, lbs | ↑ | ↑ | ↑ |
Dressing Percentage, % | NC | ↑b
| ↑b
|
Carcass Percent Fat, % | NC | ↓ | ↓ |
12th Rib Fat Thickness, in. | NC | NC | NC |
Average Rib Eye Area, sq. in. | ↑ | ↑ | ↑ |
USDA Yield Grade | NC | NC | ↓c
|
Marbling Score | NC | NC | NC |
Rate of Carcass Lean Gain per Day | NC | ↑ | ↑ |
Efficiency of Carcass Lean Gain per Day | NC | ↑ | ↑ |
Approved Concentrations of Ractopamine Hydrochloride in Type C Top-Dress Medicated Feeds
| a Based on 90% Dry Matter Basis |
Indications for Use | Concentration of Ractopamine HCl in Type C Top-Dress Medicated Feed a
| Ractopamine HCl (mg/hd/d) |
Increased Rate of Weight Gain and Improved Feed Efficiency | 100 to 800 g/ton in a minimum of 1 lb of Type C Top-Dress Medicated Feed | 70-400 |
Mixing Directions for Complete Type C Medicated Feeds: Thoroughly mix Optaflexx 45 Type A Medicated Article in a ton of appropriate feed ingredients according to the table below to obtain the proper concentration in the Type B Medicated Feed (maximum 4,920 g/ton). The following table gives examples of how some Type B Medicated Feed concentrations can be prepared:
| a Optaflexx 45 contains 45.4 g ractopamine hydrochloride per pound |
| b Based on 90% Dry Matter Basis |
Pounds of Optaflexx 45 a
To Add Per Ton To Make a Type B Medicated Feed | Resulting Ractopamine HCl Concentration in Type B Medicated Feed b
|
grams/ton | grams/pound |
32.8 | 500 | 0.25 |
36.1 | 1,640 | 0.82 |
72.2 | 3,280 | 1.64 |
108.3 | 4,920 | 2.46 |
Thoroughly mix Optaflexx 45 Type A Medicated Article in a ton of complete cattle feed according to the table below to obtain the proper concentration in the Type C Medicated Feed. Prepare an intermediate pre-blend of the premix prior to mixing in a complete feed. Thoroughly mix the required amount in a convenient quantity of feed ingredients then add to the remaining feed ingredients to make one ton of complete feed.
| a Optaflexx 45 contains 45.4 g ractopamine hydrochloride per pound |
| b Based on 90% Dry Matter Basis |
Pounds of Optaflexx 45 a Per Ton To Make a Type C Medicated Feed | Resulting Ractopamine HCl Concentration in Type C Medicated Feed b
|
0.18 | 8.2 grams/ton (9 ppm) |
0.36 | 16.4 grams/ton (18 ppm) |
0.54 | 24.6 grams/ton (27 ppm) |
Mixing Directions for Type B Liquid Medicated Feeds: Thoroughly mix Optaflexx Type A Medicated Article in a ton of appropriate feed ingredients according to the table below to obtain the proper concentration in the Type B Medicated Feed (maximum 2,300 g/ton).
Maintain supplement pH at 4.5 to 7.5. For stored Type B Liquid Medicated Feeds containing ractopamine, recirculate immediately prior to use for not less than 10 minutes, moving not less than 1% of the tank contents per minute from the bottom of the tank to the top. Recirculate daily as described even when not in use.
The following table gives examples of how some Type B Liquid Medicated Feed concentrations can be prepared:
| a Optaflexx 45 contains 45.4 g ractopamine hydrochloride per pound |
Pounds of Optaflexx 45 a
To Add Per Ton To Make a Type B Liquid Medicated Feed | Resulting Ractopamine HCl Concentration in Type B Liquid Medicated Feed |
grams/ton | grams/pound |
36.1 | 1,640 | 0.82 |
44.1 | 2,000 | 1 |
50.7 | 2,300 | 1.15 |
Mixing Directions for Type C Top-Dress Medicated Feeds: Thoroughly mix Optaflexx 45 Type A Medicated Article in a ton of appropriate feed ingredients according to the table below to obtain the proper concentration in the Type C Top-Dress Medicated Feed (100 to 800 g/ton).
The following table gives examples of how some Type C Top-Dress Medicated Feed concentrations can be prepared:
| a Optaflexx 45 contains 45.4 g ractopamine hydrochloride per pound |
| b Based on 90% Dry Matter Basis |
Pounds of Optaflexx 45 a To Add Per Ton To Make Type C Top-Dress Medicated Feed | Resulting Ractopamine HCl Concentration in Type C Top-Dress Medicated Feed b
|
Top-Dress | grams/ton | grams/pound | mg/pound |
2.2 | 100 | 0.05 | 50 |
4.41 | 200 | 0.1 | 100 |
6.61 | 300 | 0.15 | 150 |
8.81 | 400 | 0.2 | 200 |
17.62 | 800 | 0.4 | 400 |
Feeding Directions Complete Type C Medicated Feed: Feed as the sole ration during the last 28 to 42 days on feed.
Type C Top-Dress Medicated Feed: Feed a minimum of 1 lb per head per day of Type C top-dress medicated feed containing 100 to 800 g/ton of ractopamine hydrochloride to provide 70 to 400 mg ractopamine hydrochloride per head per day during the last 28 to 42 days on feed.