Executive Summary & Operational Context
Detecting non-pregnant ("open") cows early is the cornerstone of dairy reproductive management. Utilizing portable ultrasound scanning at 28-35 days or skilled rectal palpation at 60 days reduces dry days, identifies twin pregnancies, and saves thousands in maintenance feed.
Early ultrasound at Day 30 identifies non-pregnant cows 30 days earlier than manual palpation, cutting open days and boosting farm calving index.
4 Cardinal Signs of Pregnancy on Rectal Palpation
A skilled veterinarian rectally palpates the uterus between 60 and 90 days post-AI to confirm pregnancy based on four definitive positive signs: 1. Membrane Slip (Day 35 to 65): Gently pinching and slipping the chorioallantoic membrane between thumb and forefinger; 2. Amniotic Vesicle (Day 35 to 65): Palpating the firm, fluid-filled turgid egg-like structure in the pregnant horn; 3. Placentomes / Cotyledons (Day 80 onwards): Palpating the discrete button-like caruncles along the uterine wall; 4. Fremitus of Middle Uterine Artery (Day 110 onwards): Feeling the distinctive pulsing "buzzing/thrill" sensation in the hypertrophied uterine artery supplying the pregnant horn.
How to Implement on Your Dairy Farm
Schedule Ultrasound at Day 30
Use portable linear rectal probe ultrasound (5.0–7.5 MHz) to detect gestational fluid and fetal heartbeat at 30 days post-AI.
Confirm Manual Palpation at Day 60-90
Have a qualified veterinarian perform gentle transrectal palpation to confirm normal fetal growth.
Re-Synchronize Open Cows Immediately
If diagnosed empty ("open"), immediately administer prostaglandin (PGF2alpha) to bring the cow back into fertile heat within 3-4 days.
Recommended Breeds for this System
Related Dairy Guides in Breeding & Genetics
Sex-Sorted Semen in Dairy Farming: 90% Female Calf Rate, Cost & AI Technique
Heat Detection in Cows and Buffaloes: Standing Heat Symptoms & The AM-PM AI Rule
Repeat Breeding in Dairy Cattle: Causes, Hormonal Protocols & Uterine Infection Cure
FAQ
Frequently Asked Questions: Pregnancy Diagnosis (PD) in Cattle: 60-Day Rectal Palpation vs Ultrasound Scanning
Need a Custom TMR Feed or Bank Loan Calculation?
Use our interactive ICAR-NDRI Total Mixed Ration calculator or explore Pashu KCC loan scales for all 73 Indian livestock breeds.