The Fungicide Thiram may Disrupt Reproductive Cycle of Domestic Male Pigeon (Columba livia domestica) Subjected to a Long Photoperiod
The Fungicide Thiram may Disrupt Reproductive Cycle of Domestic Male Pigeon (Columba livia domestica) Subjected to a Long Photoperiod
Souheila Slimani1,*, Sonia Hamouda1, Chahrazed Souadi1, Sara Silini2, Cherif Abdennour2 and Leila Delimi3
Variation of the mean testicular volume (m±SE) of male pigeons (Columba livia domestica) subjected to a long photoperiod (19L:05D) and exposed to thiram (n=6). a, difference between control and D1; b, difference between control and D2; c, difference between D1 and D2.
Variation of the mean testicular weight at week 10 (m±SE) of male pigeons (Columba liviadomestica) subjected to a long photoperiod (19L: 05D) and exposed to thiram (n=6). a, difference between control and D1; b, difference between control and D2; c, difference between D1 and D2.
Selected pictures of testes of male pigeons (Columba liviadomestica) at week 10 (C: control; D1, 5mg/Kg/D; D2, 10mg/Kg/D) subjected to a long photoperiod (19L: 05D) and exposed to thiram (n=6).
The testis of control pigeons (Columba livia domestica) subjected to long photoperiod (19L:5D) for 10 weeks H&E. Magnification x10 and x40. The histological profile showing azospermia and lack of spermatogenesis stage. TS, somniferous tubules; TI, interstitial tissue; EP, epithelium.
Testis of pigeon (Columba livia domestica) exposed to Thiram 5 mg/Kg/day for 10 weeks and subjected to long photoperiod (19L:5D), H&E. Magnification x10 and x40. L, lumen; Sp, spermatozoa; SG, spermatogonia; SC, spermatocyte; SD, spermatide. Degenerative in the histoarchitecture of testis are seen. Irregular somniferous tubules with all successive stages of spermatogenesis, some malformed spermatozoa in the lumen, slight decrease in Sertoli cell counts and a decrease in the interstitial spaces.
Testis of pigeon (Columba livia domestica) exposed to Thiram at 10 mg/Kg/day after 10 weeks (H&E. Magnification x10 and x40). L, lumen; Sp, spermatozoa; SG, spermatogonia; SC, spermatocyte; SD, spermatide; S, Sertoli cells. Acute degenerative in the histoarchitecture of testis characterized by elongated and irregular diameter of seminiferous tubules with all the successive stages of spermatogenesis. Deteriorating of Sertoli cells, a pronounced decrease in interstitial space and severe atrophy of Leydig cells.
