Reproduction, Events and Management | Mating Management: Detection of Estrus

摘要: Estrus detection is one of the key components in fertility management programs on dairy farms. Low rate strongly associated with poor fertility, long calving interval, intensive replacement heifers, and reduced genetic progress, resulting heavy economic losses. The goal an estrus program to identify positively accurately all cycling cows ultimate predict time ovulation, thus allowing for insemination that will maximize opportunity conception. In general, market sorts out which technologies offer a competitive advantage do not. It includes using pedometers, pressure-sensing radiotelemetric system, electrical resistance, body temperature, monitoring milk progesterone levels. Most aids have been developed are not reliable or sensitive enough relieve farmer from frequent visual observation herd. Combining simultaneous measurements several physiological events specifically onset ovulation should provide more accurate predictions optimal insemination. New approaches being automated systems remote-sensing technology, but development these new tools its infancy.