Prid Delta 1.55g
Prid Delta 1.55g
PLEASE NOTE: A prescription issued by a UK registered vet (MRCVS) is required before this item can be dispatched.
Product Description
A 7-day progesterone device for cows and heifers
What it does — in brief
Delivers 1.55 g progesterone over seven days.
Brings cows and heifers into heat together, so you can plan fixed-time AI or embryo transfer.
Works in both cycling and non-cycling animals.
Requires no milk or meat withdrawal.
How to use it — step by step
First, disinfect the applicator, fold the device, and load it (tail exposed).
Next, add a small amount of lubricant and insert the applicator: vertical at first, then horizontal until you meet gentle resistance.
Then, press the handle to release the device and withdraw the applicator, leaving the tail visible.
After seven days, pull the tail to remove the device. If you cannot see the tail, locate it carefully with a gloved hand.
Finally, inseminate as the protocol below directs.
Main protocols
| Situation | Hormones to add | When to inseminate |
|---|---|---|
| Cycling cattle | PGF₂α 24 h before removal | Observe heat; AI within 12 h or use fixed-time AI 56 h after removal |
| Cycling & non-cycling | GnRH at insertion → PGF₂α 24 h before removal → (option A) AI 56 h after removal or (option B) GnRH 36 h after removal → AI 16–20 h later | As shown |
| Non-cycling | PGF₂α 24 h before removal + eCG at removal | Fixed-time AI 56 h after removal |
Your vet chooses the exact plan for your herd.
Key reminders
Use one device per animal, one time only.
Heat usually starts one to three days after removal.
Insert gently and never force removal; call your vet if you meet resistance.
Prid Delta 1.55g Withdrawal
Zero days
