بررسي اثرات گوسيپول كنجاله پنبه دانه بر محيط بيضه و كيفيت اسپرماتوزوا در قوچ هاي آتاباي

An investigation on the effects of gossypol in cottonseed meal on scrotal circumference and spermatozoa quality in Atabay rams

An experiment was conducted to investigate the effects of gossypol in cottonseed meal (CSM) on scrotal circumference (SC) and spermatozoa quality. Eight Atabay rams of 2 years old with an average body weight of 586.09 were used. The isocaleric and isonitrogenous diets were calculated for the control and experimental groups contained %10 soybean meal and %I5 CSM (containing 850 ppm free gossypol) respectively. Semen was collected for 12 weeks, and percentages of motility, live and normal spermatozoa were measured. SC was measured during the experiment every week. The results showed that the differences of SC and spermatozoa quality between the control and experimental groups were significant (P<0.01). The percentages of motility live and normal spermatozoa and SC in control group were greater than in experimental group respectively (69.57%, 77.25%, 80.61% and 33.55cm vs 62.48%, 74.59%, 59.36% and 32.72cm). The results showed that feeding 15% CSM reduced SC and rate of motility, survival and normal spermatozoa in Atabay rams.