DOI: 10.36347/sjavs.2015.v02i04.004

Pages: 287-294

The heat detection is the key issue to be considered on priority basis. Inadequate heat detection is one of the major factor limiting reproductive performances in herds; therefore, it is an area of farm activity where increased effort or investment is likely to be profitable. Proper heat detection to achieve appropriate timing of insemination is the biggest restriction in attaining high conception rate in dairy herd. For improving efficiency of heat detection visual observation is best method, if it is done three times a day for at least 30 minutes every time, however heat detection aids, if used in combination give better results. The use of synchronization and heat-detection aids can greatly shorten the time spent in heat detection but will not benefit a non- cycling herd. It is already established that, estrus detection alone contributes considerably to reproductive status of the herd, therefore the need of the our is critical observation of dairy herd to reduce incidence of unnoticed estrus.