Vol. 9, Special Issue 1 (2024)

Author(s): Anil, Radha Rani Sawami, Rajesh Kumar Bochlya and Sagar Kumar Meena

Abstract: The present study was carried on 234 Surti buffaloes, sired by 56 bulls, maintained at Network Project on Buffalo Improvement (NPBI) Surti Unit of Livestock Research Station (LRS), Vallabhnagar (Udaipur), Rajasthan for the duration of 28 years (1990-2017). To investigate the effect of season of birth/calving on first service period (FSP), the total duration of a year into three seasons, followed by coding of the respective seasons. The data were classified into four periods according to the birth of year. To study the effect of various genetic and non-genetic factors on FSP, computer package programme, SPSS (Statistical Package for the Social Sciences) software version 20.0 was used for data analysis. Duncan’s Multiple Range Test (DMRT) was used to test the significance of differences between different means. The Overall least square means of FSP was 189.83±8.5 days. The effect of sire, effects of season of birth, period of birth and effect of age at first calving (AFC) groups were non-significantly effects on FSP.