Merck Animal Health Ralgro Implants 24DS – Zeranol Implant for Beef Cattle Weight Gain

Overview

Merck Animal Health Ralgro Implants 24DS present a zeranol-based implant option designed for beef cattle. Packaged in round cartridges, each cartridge contains 24 doses. Every dose comprises three small pellets delivering a total of 36 mg of zeranol. The same dosing applies to calves, growing beef cattle, and feedlot heifers and steers, making the system straightforward for mixed-age herds. The product is not approved for dairy cattle, veal calves, or bulls intended for reproduction.

Key details at a glance

• Brand: Merck Animal Health
• Product: Zeranol implant
• Purpose: Designed to stimulate weight gain and improve feed efficiency under certain management conditions
• Dose count: 24 doses per cartridge

How it works (simplified)

Ralgro uses zeranol, described as an anabolic agent that can influence the animal’s natural growth-promoting processes. It is formulated to interact with the animal’s endocrine system, aiming to support growth-oriented outcomes when used as part of a broader feeding and management program. The same dose is intended for calves, heifers, and steers, which helps simplify scheduling across herd groups.

Packaging, dosing, and management

The 24-dose cartridge system is designed for pasture or feedlot settings. Each dose consists of three pellets containing 12 mg of zeranol, for a total of 36 mg per dose. This consistent dosing makes it suitable for a range of beef cattle stages, though always follow label directions and local regulations.

Use cases and best practices

• Pasture-raised calves and growing beef cattle
• Feedlot heifers and steers undergoing finishing programs

Important usage notes

• Not approved for dairy cattle, veal calves, or bulls intended for reproduction
• Use as directed, within the context of a complete management plan

Potential benefits and considerations

In real-world settings, producers may observe shifts in weight gain trajectories and feed efficiency under the right management and environmental conditions. Results are influenced by equipment, diet, housing, and animal health, and will vary by operation. This product is presented as a tool within an integrated cattle-farming strategy, not a guaranteed outcome.