ANR-1020 IMPLANTS FOR GROWTH PROMOTION IN BEEF CATTLE/Table 1

Table 1. Growth Promotant Ear Implants Approved In U. S. Beef Cattle (August 1996).

Brand Name Active Ingredient Amount Use Claim Re-implant Interval Slaughter Withdrawal

Implants For Nursing Calves

CALF-oid
(Pharmacia & Upjohn) Progesterone
Estradiol
benzoate 100 mg
10 mg Suckling calves (not replacement heifers) <400 pounds Increased rate of gain Re-implant with different product None

Compudose 200 (Elanco) Estradiol 24 mg Suckling and pastured growing steers Increased weight gain 200 days None

Confined steers and heifers Increased weight gain and improved feed efficiency

Ralgro
(Mallinckrodt) Zeranol 36 mg Suckling calves (including replacement heifers >30 days old), weaned calves, growing cattle, feedlot steers and heifers Increased weight gain and improved feed conversion 100 days None

Synovex C
(Ft. Dodge) Progesterone
Estradiol
benzoate 100 mg
10 mg Suckling calves (including replacement heifers <400 pounds and >45 days old) Improved growth promotion Re-implant with different product None

Implants For Weaned Stocker And Feeder Calves

Compudose 200 (Elanco) Estradiol 24 mg Suckling and pastured growing steers Increased weight gain 200 days None

Confined steers and heifers Increased weight gain and improved feed efficiency

Implus-H (Pharmacia & Upjohn) Testosterone
propionate
Estradiol benzoate 200 mg

20 mg Heifers >= 400 pounds Improved growth promotion and feed efficiency None

Synovex H (Ft. Dodge) Testosterone propionate
Estradiol benzoate 200 mg

20 mg Heifers >= 400 pounds Increased weight gain and feed efficiency None

Implus-S (Pharmacia & Upjohn) Progesterone
Estradiol benzoate 200 mg
20 mg Steers >= 400 pounds Improved weight gain and efficiency 70 days None

Synovex S (Ft. Dodge) Progesterone
Estradiol benzoate 200 mg
20 mg Steers >= 400 pounds Increased weight gain and feed efficiency 70 days None

Revalor-G (Hoechst-Roussel) Trenbolone acetate
Estradiol 40 mg

8 mg Pasture steers and heif (slaughter, stocker, anders feeder cattle) Not to be used in animals intended for subsequent breeding Increased rate of gain Not indicated None

Implants For Feedlot Calves Only

Ralgro Magn (Mallinckrodt) um Zeranol 72 mg Confined slaughter steers (finishing stage/heavy weight steers) Increased weight gain None None

Revalor-H (Hoechst-Roussel Trenbolone acetate
Estradiol 140 mg

14 mg Heifers fed in confinement for slaughter (Compared to non-implanted cattle, implanted cattle may have lower marbling scores) Increased rate of weight gain and improved feed efficiency Use conservative or aggressive program depending on goals. Consult technical bulletins and company technical service reps None

Revalor-S (Hoechst-Roussel) Trenbolone acetate
Estradiol 120 mg

24 mg Feedlot steers (Compared to non-implanted cattle, implanted cattle may have lower marbling scores) Increased rateof weight gain and improved feed efficiency program depending Use conservative or aggressive on goals. Consult technical bulletins and company technical service reps None

Synovex Plus (Ft. Dodge) Trenbolone acetate
Estradiol benzoate 200 mg

28 mg Confined feedlot steers (Compared to non-implanted cattle, implanted cattle may have lower marbling scores) Improved feed conversion Use conservative or aggressive program depending on goals. Consult technical bulletins and company technical service reps None

Note: Consult your veterinarian and/or product representative for additional information on each implant.

Read the label of the implant! Be sure to follow label instructions as to method and site of implantation. The site for implanting is in the middle third of the backside of the ear, between the skin and cartilage.
Take time to implant properly. Insure that the animal is well restrained. Restraining the head and taking your time will help you insert the implant properly. Make sure the implant is placed between the skin and cartilage and that the site is clean. The implant will not work well if it is inserted in the cartilage, and implanting at a dirty site may cause infection or an abscess around the implant, which will decrease its effectiveness.

**Table 1. Growth Promotant Ear Implants Approved In U. S. Beef Cattle (August 1996).**
Brand Name	Active Ingredient	Amount	Use	Claim	Re-implant Interval	Slaughter Withdrawal
Implants For Nursing Calves
CALF-oid (Pharmacia & Upjohn)	Progesterone Estradiol benzoate	100 mg 10 mg	Suckling calves (not replacement heifers) <400 pounds	Increased rate of gain	Re-implant with different product	None
Compudose 200 (Elanco)	Estradiol	24 mg	Suckling and pastured growing steers	Increased weight gain	200 days	None
Confined steers and heifers	Increased weight gain and improved feed efficiency
Ralgro (Mallinckrodt)	Zeranol	36 mg	Suckling calves (including replacement heifers >30 days old), weaned calves, growing cattle, feedlot steers and heifers	Increased weight gain and improved feed conversion	100 days	None
Synovex C (Ft. Dodge)	Progesterone Estradiol benzoate	100 mg 10 mg	Suckling calves (including replacement heifers <400 pounds and >45 days old)	Improved growth promotion	Re-implant with different product	None
Implants For Weaned Stocker And Feeder Calves
Compudose 200 (Elanco)	Estradiol	24 mg	Suckling and pastured growing steers	Increased weight gain	200 days	None
Confined steers and heifers	Increased weight gain and improved feed efficiency
Implus-H (Pharmacia & Upjohn)	Testosterone propionate Estradiol benzoate	200 mg 20 mg	Heifers >= 400 pounds	Improved growth promotion and feed efficiency		None
Synovex H (Ft. Dodge)	Testosterone propionate Estradiol benzoate	200 mg 20 mg	Heifers >= 400 pounds	Increased weight gain and feed efficiency		None
Implus-S (Pharmacia & Upjohn)	Progesterone Estradiol benzoate	200 mg 20 mg	Steers >= 400 pounds	Improved weight gain and efficiency	70 days	None
Synovex S (Ft. Dodge)	Progesterone Estradiol benzoate	200 mg 20 mg	Steers >= 400 pounds	Increased weight gain and feed efficiency	70 days	None
Revalor-G (Hoechst-Roussel)	Trenbolone acetate Estradiol	40 mg 8 mg	Pasture steers and heif (slaughter, stocker, anders feeder cattle) Not to be used in animals intended for subsequent breeding	Increased rate of gain	Not indicated	None
Implants For Feedlot Calves Only
Ralgro Magn (Mallinckrodt) um	Zeranol	72 mg	Confined slaughter steers (finishing stage/heavy weight steers)	Increased weight gain	None	None
Revalor-H (Hoechst-Roussel	Trenbolone acetate Estradiol	140 mg 14 mg	Heifers fed in confinement for slaughter (Compared to non-implanted cattle, implanted cattle may have lower marbling scores)	Increased rate of weight gain and improved feed efficiency	Use conservative or aggressive program depending on goals. Consult technical bulletins and company technical service reps	None
Revalor-S (Hoechst-Roussel)	Trenbolone acetate Estradiol	120 mg 24 mg	Feedlot steers (Compared to non-implanted cattle, implanted cattle may have lower marbling scores)	Increased rateof weight gain and improved feed efficiency program depending	Use conservative or aggressive on goals. Consult technical bulletins and company technical service reps	None
Synovex Plus (Ft. Dodge)	Trenbolone acetate Estradiol benzoate	200 mg 28 mg	Confined feedlot steers (Compared to non-implanted cattle, implanted cattle may have lower marbling scores)	Improved feed conversion	Use conservative or aggressive program depending on goals. Consult technical bulletins and company technical service reps	None
Note: Consult your veterinarian and/or product representative for additional information on each implant. Read the label of the implant! Be sure to follow label instructions as to method and site of implantation. The site for implanting is in the middle third of the backside of the ear, between the skin and cartilage. Take time to implant properly. Insure that the animal is well restrained. Restraining the head and taking your time will help you insert the implant properly. Make sure the implant is placed between the skin and cartilage and that the site is clean. The implant will not work well if it is inserted in the cartilage, and implanting at a dirty site may cause infection or an abscess around the implant, which will decrease its effectiveness.

return