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Using UHF proximity loggers to quantify male-female interactions: a scoping study of estrous activity in cattle
C J O'Neill1, G J Bishop-Hurley2, P J Williams3
1CSIRO, Agriculture Flagship, Australian Tropical Science and Innovation Precinct, Building 145, James Cook Drive, Townsville, QLD 4814, Australia; School of Medical and Applied Sciences, CQUniversity, North Rockhampton, QLD 4701, Australia.
Animal Reproduction Science
|December 3, 2014
Summary
Ultra-high frequency (UHF) telemetry accurately identifies estrus in cattle by tracking bull-cow associations. This non-invasive technology offers improved reproductive management for livestock and wildlife conservation.
Area of Science:
- Animal Science
- Reproductive Biology
- Wildlife Conservation Technology
Background:
- Reproductive efficiency is crucial for cattle breeding profitability and wildlife conservation via assisted reproductive techniques (ART).
- Current estrous detection methods in cattle lack accuracy and practicality for extensive systems and wildlife.
- Ultra-high frequency (UHF) proximity loggers offer continuous, pair-wise animal association data for livestock and wildlife.
Purpose of the Study:
- To evaluate UHF telemetry for identifying the reproductive cycle phenotype, specifically estrus intensity and duration.
- To assess the feasibility of UHF technology for non-invasive reproductive monitoring in cattle.
Main Methods:
- Conducted a 7-week study on Belmont Red cattle using UHF telemetry loggers to record cow-bull associations.
- Utilized ultrasonography to identify estrus stages in cows.
- Analyzed telemetry data (bull-cow affiliations) using log transformation and ANOVA.
Main Results:
- Significantly higher number and duration of bull-cow affiliations were observed in estrous cows compared to anestrus cows (P<0.001).
- UHF telemetry successfully provided continuous socio-sexual interaction data.
Conclusions:
- UHF telemetry is a viable, non-invasive method for gathering socio-sexual data to aid reproductive management in livestock.
- This technology holds promise for both extensive cattle farming and wildlife conservation efforts.
