Factors affecting conception rate in dairy cattle using sorted semen in Uttarakhand

Abstract

The primary aim of this study was to evaluate the performance of sorted semen in dairy cattle of various breeds in Uttarakhand. Total 6382 inseminations were performed in different districts. Different factors considered for study were region, dam breed, parity number, insemination season, bull breed used for insemination. Sorted semen provided by Uttarakhand Livestock Board. Total 6382 inseminations were considered for this study and the statistical analysis was performed using R version 4.3.1 software to study the effect of these different factors on conception rate. Except dam breed all other factors were having significant effect over conception rate. The overall conception rate was 37.2±1.12%. Highest conception rate 35.7±1.69% was observed in first parity lowest was in heifer that was 30.1±1.38%. In season study summer season was having highest conception rate summer 39.1±0.98% while rainy season was having 35.9±1.17% conception rate lowest was in winter 23.9±1.48%. Animals inseminated in Hilly region were shown conception rate of 30.2±1.2% while animals in Plane region were having conception rate of 35.8±0.94%. Gir bulls were having highest conception rate 34.7±1.42% followed by Sahiwal 34.6±0.86% Red Sindhi bulls were having lowest conception rate 29.6±1.43%.