NARASIMHA MURTHY2019-07-052019-07-052006http://krishikosh.egranth.ac.in/handle/1/5810112905Inefficient estrus detection and improper timing of artificial insemination are among the major causes for the failure of conception which results in prolonged service period, long calving intervals and reduced lifetime production which intum affects the profitability of dairy farming. In dairy cows, upto 40 percent of estrus periods may pass undetected inspite of normal ovarian cyclicity (Williamson et ah, 1972; King et al, 1976). Consequently, controlled breeding with induction of estrus and fixed time inseminations have gained importanceThesis