ANALYSIS CORRELATIONS BETWEEN AGE AND SEMEN PRODUCTION OF LIMOUSIN BULL AT NATIONAL ARTIFICIAL INSEMINATION CENTER, SINGOSARI - INDONESIA

The aim of this research was to analyze the correlation between age and semen quality. The material used is in the form of secondary data, namely data from 2012-2018 from 29 Limousin bulls which include semen quality data as much (n = 27407) ejaculation at the Center for Artificial Insemination, Singosari, East Java, Indonesia. The research method used is a case study. The variables observed were bull's age, semen volume, individual motility, and semen concentration. Data were analyzed using SPSS 21 with One-Way ANOVA method. Correlation test using Pearson correlation (r) and statistical analysis of linear regression models to estimate the quality of semen based on the age of the bulls. The results showed that the age of the bulls had a significant effect (p <0.05) on the quality of semen. Age of bulls was significantly correlated (p <0.05) with volume (r = 0.43), individual motility (r = 0.063) and sperm concentration (r = 0.282). The conclusion of the research, Age of Limuosine bull were significant difference on volume, individual motility and sprem concentration. Age has a negative correlation to sperm concentration and individual motility but is positive to semen volume.