Assessment of factors affecting conception rate in cross bred cows following artificial insemination under field conditions

Abstract

Studies were conducted to identify the factors affecting fertility in cross bred cows following
artificial insemination (Al) under field conditions. A field survey was carried out on 446 crossbred cows of
89 farmers inseminated by 34 AI technicians. The data was analyzed by Artificial Insemination Database
Application (AIDA) a software provided by F AO/IAEA Vienna, Austria. The I•• service conception rate
(FSCR) and the overall conception rate (OCR) were 29.4% and 38%, respectively. The OCR was better
(48.8%) in cows inseminated 18-23 hours after the onset of estrus. Inseminations done by professional
degree holders yielded better conception rate (48.7%) as compared to those done by diploma holders
(20.4%) or by progressive dairy farmers (30.2%). The OCR was significantly (P<0.05) higher (51.6%) when
inseminations were done during "standing estrus". It is concluded that the quality of estrus, semen,
management and expertise of AI technician have a strong bearing on the success of AI in cross bred cows.