Changes in testis parameters and the weight of antlers and carcass in males of the European roe deer (Capreolus capreolus) between 2009 and 2011

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The research involved the analysis of changes in selected metrical features in the male roe deer (n = 57) during three consecutive years 2009–2011. Next, correlations between testis parameters and carcass and antler weight were presented. The research was conducted during the rut. Statistical analyses showed that in particular years the weight of carcass, antlers and testes changed. Also, differences in the thickness and circumference of testes were observed. Males presented the lowest weight in 2009 when a severe winter occurred. It was also a year when the males had the smallest and lightest testes. The highest weight of the studied males was recorded in 2011. However, the increase in carcass weight did not translate into proportional increase in testis weight. The antler weight increase was not closely related to the increase in carcass weight either. In each of the analysed years, the bucks presented the same length of testes and epididymis.