ANSC 372 Heat Detection

primary sign of heat

permits other animals to mount her while she remains standing; "standing heat

secondary signs of heat

mounts other cows, swollen vulva, nervous and restless, roughened tailhead, clear mucus from vagina

bloody discharge

means she has been in heat recently; uncommon

6-12

22% of cows showing heat

12-6

10% showing heat

breed late afternoon

heat in morning

breed in the morning

heat in the afternoon

heatwatch system

electronic heat mount detection system, pressure sensitive switches, catches all cows in heat, exact onset of heat, tells best time to AI

producer

most important part of heat detection

30 min 2-4 times daily

watching for heat

moving and before feeding

observe cows for heat when they are _____ ___ ___ _____

decreased mounting

slippery surfaces may result in _____ _____

unrealistic

heat watching just with your eyes

24 hours

can wait ___ ___ after she has been seen in heat

check

producer must _____ the aids for them to be useful

bovine beacon

lights up when mounted

DETECT-HER tail paint

if rubbed off, probably mounted

gomer bull with paintball

marks cows with paint when he mounts

estrus alert

scratch off patch

KAMAR detector

changes color

pedometry

count her steps; cows in heat walk more

MooMonitor

neck band detects head position; also health monitor; expensive