Electronic monitoring of mounting behavior in beef cattle on pasture.
An automated heatmount detection system was employed to detect estrus for artificial insemination in 57 beef cows. First service conception rate was 84.2% and the pregnancy rate was 89.5% for a 42-day breeding season. Duration of estrus was 9.6 h, sx = 0.5 h and mounting activity was lowest during the dark part of the day.
Mathew
S R
SR
Department of Animal Science, Faculty of Agricultural and Food Sciences, University of Manitoba, Winnipeg.
McCaughey
W P
WP
Kennedy
A D
AD
Lewis
N J
NJ
Crow
G H
GH
D000818:Animals; D001947:Breeding / Q000379:methods; D002417:Cattle; D004972:Estrus Detection / Q000379:methods*; D005260:Female; D007315:Insemination, Artificial; D008297:Male; D011247:Pregnancy; D012726:Sexual Behavior, Animal