| 摘要 |
<p>System for estrous detection in cattle or other animals exhibiting standing heat behavior. The system includes a surgically implanted unit (10) positioned at the hindquarters under the hide. The implanted unit includes a power source (42), a force responsive sensor (34), a controller (44), a transmitter (48), an antenna (38), and a fluid-tight capsule (30) which surrounds the other elements. The implanted unit senses force applied during mounting by another animal. It analyzes the duration of mounting to discriminate sustained mountings during estrus from shorter duration spurious mountings which routinely occur in cattle herds. The number of sustained mountings which occur in a fixed period are counted and the frequency is compared to a threshold which determines whether estrus should be indicated. An estrus condition is communicated telemetrically to a receiving base station (52). The systems allow fully automated estrous detection and analysis to be performed.</p> |
