Pregled bibliografske jedinice broj: 645730
Determination of physiological characteristics and specificities of estrous and breeding season in Pramenka breed Lika strain sheep
Determination of physiological characteristics and specificities of estrous and breeding season in Pramenka breed Lika strain sheep // Book of Abstracts, The 5th International Congress "Veterinary Science and Profession" / Horvatek Tomić, Danijela ; Severin, Krešimir ; Slavica, Alen (ur.).
Zagreb: Veterinarski fakultet Sveučilišta u Zagrebu, 2013. str. 51-51 (predavanje, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 645730 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Determination of physiological characteristics and specificities of estrous and breeding season in Pramenka breed Lika strain sheep
Autori
Platiša, Maja ; Grizelj, Juraj ; Špoljarić, Branimira ; Vince, Silvijo
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Book of Abstracts, The 5th International Congress "Veterinary Science and Profession"
/ Horvatek Tomić, Danijela ; Severin, Krešimir ; Slavica, Alen - Zagreb : Veterinarski fakultet Sveučilišta u Zagrebu, 2013, 51-51
Skup
The 5th International Congress "Veterinary Science and Profession"
Mjesto i datum
Zagreb, Hrvatska, 03.10.2013. - 04.10.2013
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Pramenka breed - Lika strain; seasonality; sexual cycle; LH hormone; progesterone
Sažetak
The aim of this research was to determine the physiological characteristics and specificities of oestrus cycle and breeding season of Pramenka breed Lika strain sheep measuring hormone levels (progesterone, testosterone and LH). For this purpose, blood samples were taken from eight sheep and one ram of Pramenka breed lika strain in two year period (2011 and 2012) and orchidometry was performed in ram for determination of breeding season. In order to determine the characteristics and duration of oestrus cycle, blood was sampled in sheep during 21 days (in full breeding season), after oestrus synchronisation with two prostaglandin F2α applications (with an interval of 12 days). Concentrations of progesterone and testosterone were analyzed using an automatic system Immulite ® One. Analysis of the LH hormone was done by ELISA. On the basis of the obtained data we have concluded that the season of breeding activity begins in late July. Most of the sheep enter the season in late August and September, and continue with breeding activity through December. Concentrations of testosterone and results of orchidometry in ram are corresponding with breeding season of sheep. The oestrous cycle in sheep lasts 17.2 days on average, with luteal phase of 13.8 days and follicular of 3.4 days. The average duration of LH surge was 12.4 hours with a range of 8 to 16 hours.
Izvorni jezik
Engleski
Znanstvena područja
Veterinarska medicina, Biotehnologija
POVEZANOST RADA
Projekti:
053-0000000-3645 - Optimizacija superovulacije i krioprezervacija kozjih zametaka (Grizelj, Juraj, MZOS ) ( CroRIS)
Ustanove:
Veterinarski fakultet, Zagreb
