Effect of different protein levels on, testicular parameters and semen quality in Kivircik ram lambs during pubertal development
The aim of this study was to determine the effects of different protein levels on, testicular parameters and semen quality in Kivircik ram lambs during pubertal development. Two experimental groups were formed. Following weaning, crude protein (CP) were 12% CP in group I (low protein diet) and 18% C...
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| Testületi szerző: | |
| Dokumentumtípus: | Cikk |
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Szegedi Tudományegyetem Mezőgazdasági Kar
Szeged
2011
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| Sorozat: | Agrár- és vidékfejlesztési szemle
6 No. 1 |
| Kulcsszavak: | Juhtenyésztés |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/76098 |
| Tartalmi kivonat: | The aim of this study was to determine the effects of different protein levels on, testicular parameters and semen quality in Kivircik ram lambs during pubertal development. Two experimental groups were formed. Following weaning, crude protein (CP) were 12% CP in group I (low protein diet) and 18% CP in group II (high protein diet). Measurements of live weight and testicular characteristics were performed in 20 days intervals starting from 115 days up to 195 days of age. There was an increase in semen volume, spermatozoa concentration and the percentage of progressively motile sperm in both groups between 135 and 195 days of age. Group I had significantly higher semen volume on day 175 (P<0.05). Furthermore, spermatozoa concentration were higher in group I than those in group II on days 155 and 175 (P<0.05). Values of live weight, testicular diameter, testicular circumference, testicular length and testicular volume of ram lambs in group II (high protein diet) were higher than those in group I (low protein diet). Testicular length and testicular volume of group II were significantly higher than those of group I on day 195 (P<0.05). Live weight and testicular characteristics of ram lambs fed with high protein diet were affected positively during pubertal development. However, it was observed that feeding with high protein diet had negative effect on semen characteristics by impaired thermoregulation mechanism and spermatogenesis in testicles because of excessive fat accumulation in scrotum. |
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| Terjedelem/Fizikai jellemzők: | 150-155 |
| ISSN: | 1788-5345 |