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Pregled bibliografske jedinice broj: 704021

Utjecaj mikroklimatskih čimbenika na kakvoću i antioksidativna svojstva sjemena rasplodnih bikova


Majić-Balić, Ivanka
Utjecaj mikroklimatskih čimbenika na kakvoću i antioksidativna svojstva sjemena rasplodnih bikova, 2010., doktorska disertacija, Veterinarski fakultet, Zagreb


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Naslov
Utjecaj mikroklimatskih čimbenika na kakvoću i antioksidativna svojstva sjemena rasplodnih bikova
(Effect of environmental factors on semen quality, and antioxidative parameters in service bulls)

Autori
Majić-Balić, Ivanka

Vrsta, podvrsta i kategorija rada
Ocjenski radovi, doktorska disertacija

Fakultet
Veterinarski fakultet

Mjesto
Zagreb

Datum
01.06

Godina
2010

Stranica
125

Mentor
Milinković-Tur, Suzana ; Samardžija, Marko

Ključne riječi
rasplodni bikovi; oksidativni stres; antioksidansi; sjemena plazma; godišnje doba
(service bulls; oxidative stress; antioxidants; sperm; semen plasma; seasons)

Sažetak
Taking into account that reproduction quality depends on animal age and climate conditions and that oxidative stress has been reported to be a common cause of infertility, the objective of this study was to monitor indicators of oxidative stress and antioxidant protection during four seasonal periods in service bulls of various age to get better insight into the significance of these factors upon evaluating service bull semen. The research was conducted over a year on 19 Simmental service bulls. Animals were divided into two groups according to age ; group I consisted of younger bulls aged two to four years (n=9), and group II was comprised of older bulls between five to ten years of age (n=10). Semen samples were obtained during one week in every seasonal period and blood samples for biochemical analysis were collected by jugular venipuncture immediately prior to ejaculate collection. The activity of total glutathione peroxidase (T-GSH-Px), selenium-dependent glutathione peroxidase (Se-GSH-Px) and selenium-independent glutathione peroxidase (non-Se-GSH-Px) together with the intensity of lipid peroxidation (TBARS concentration) and oxidative protein damage (PCC concentration) were measured in semen plasma. In samples of spermatozoa and blood serum, the activity of Se-GSH-Px and TBARS and PCC concentrations were determined. Older service bulls had significantly higher ejaculate volume in summer in comparison to younger bulls, whereas the number of spermatozoa and progressive motility percentage did not significantly vary with age. Younger animals had lower progressive motility percentage during summer than in spring, with more intensive oxidative processes observed in semen plasma (TBARS) and spermatozoa (TBARS and PCC). Based on the results presented here, it can be concluded that younger bulls are more sensitive to elevated ambient temperatures during the summer, when intensified pro-oxidative processes in semen plasma and spermatozoa eventually led to decreased sperm progressive motility with consequential semen quality deterioration.

Izvorni jezik
Hrvatski

Znanstvena područja
Veterinarska medicina



POVEZANOST RADA


Ustanove:
Veterinarski fakultet, Zagreb


Citiraj ovu publikaciju:

Majić-Balić, Ivanka
Utjecaj mikroklimatskih čimbenika na kakvoću i antioksidativna svojstva sjemena rasplodnih bikova, 2010., doktorska disertacija, Veterinarski fakultet, Zagreb
Majić-Balić, I. (2010) 'Utjecaj mikroklimatskih čimbenika na kakvoću i antioksidativna svojstva sjemena rasplodnih bikova', doktorska disertacija, Veterinarski fakultet, Zagreb.
@phdthesis{phdthesis, author = {Maji\'{c}-Bali\'{c}, Ivanka}, year = {2010}, pages = {125}, keywords = {rasplodni bikovi, oksidativni stres, antioksidansi, sjemena plazma, godi\v{s}nje doba}, title = {Utjecaj mikroklimatskih \v{c}imbenika na kakvo\'{c}u i antioksidativna svojstva sjemena rasplodnih bikova}, keyword = {rasplodni bikovi, oksidativni stres, antioksidansi, sjemena plazma, godi\v{s}nje doba}, publisherplace = {Zagreb} }
@phdthesis{phdthesis, author = {Maji\'{c}-Bali\'{c}, Ivanka}, year = {2010}, pages = {125}, keywords = {service bulls, oxidative stress, antioxidants, sperm, semen plasma, seasons}, title = {Effect of environmental factors on semen quality, and antioxidative parameters in service bulls}, keyword = {service bulls, oxidative stress, antioxidants, sperm, semen plasma, seasons}, publisherplace = {Zagreb} }




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