Određivanje fizioloških karakteristika i posebnosti spolnog ciklusa i rasplodne sezone u ovaca pasmine lička pramenka

master's thesis

• Title (english): Determination of Physiological Characteristics and Specificities of Estrous and Breeding Season in Pramenka Breed Lika Strain Sheep
• Author: Maja Platiša
• Mentor: Silvijo Vince (mentor)
• Mentor: Juraj Grizelj (mentor)
• Committee member: Branimira Špoljarić
• Committee member: Juraj Grizelj
• Committee member: Silvijo Vince
• Granter: University of Zagreb; Faculty of Veterinary Medicine; (Reproduction and Obstetrics Clinic); Zagreb
• Defense date and country: 2015-06-29, Croatia
• Scientific / art field, discipline and subdiscipline: BIOMEDICINE AND HEALTHCARE; Veterinary Medicine; Veterinary Clinical Sciences

Abstract

Cilj našeg istraživanja je određivanje fizioloških karakteristika i posebnosti spolnog ciklusa i rasplodne sezone ovaca pasmine lička pramenka U tu svrhu uzorkovana je krv ovcama i ovnu te rađena orhidometrija ovna. Koncentracija progesterona i testosterona u serumu je analizirana pomoću automatskog sistema Immulite®One. Analiza LH hormona rađena je pomoću Imunoenzimnog testa (ELISA). Statistička analiza podataka načinjena je pomoću programskog paketa SAS (Statistical Analysis Software) 9.1.3. Na osnovu dobivenih podataka o koncentraciji progesterona zaključili smo da sezona spolne aktivnosti započinje krajem srpnja. Većina ovaca u pokusu ulazi u sezonu krajem kolovoza i tijekom rujna, a nastavlja sa spolnom aktivnošću sve do prosinca. Vrijednosti koncentracije testosterona i orhidometrije u ovna odgovaraju rasplodnoj sezoni ovaca. Trajanje spolnog ciklusa u ovaca je u prosjeku iznosilo 17,2 dana, lutealne faze 13,8 dana, a folikularne 3,4 dana. Prosječno trajanje LH vala iznosilo je 12,4 sati s rasponom od 8 do 16 sati te je za njegovu detekciju dostatno uzorkovanje krvi svakih osam sati.

Abstract (english)

The aim of our research is to determine the physiological characteristics and specificities of oestrus and breeding season of Pramenka breeds Lika strain sheep. For this purpose, blood was sampled from the sheep and ram and orchidometry was done in ram. Concentrations of progesterone and testosterone were analyzed using an automatic system Immulite ® One. Analysis of the LH hormone was done by ELISA. Statistical analysis was made using the software package SAS. On the basis of the obtained data we have concluded that season of sexual activity begins in late July. Most of the sheep enters the season in late August and September, and continues with sexual activity throughout December. Concentrations of testosterone and results of orchidometry in ram are corresponding with appropriate breeding season of sheep. Duration of estrous in sheep is in average 17.2 days, 13.8 days luteal and 3.4 days follicular phase. The average duration of LH surge was 12.4 hours with a range of 8 to 16 hours and for its detection blood sampling every eight hours was sufficient.

• Keywords: lička pramenka; sezonost; spolni ciklus; LH hormon; progesteron
• Keywords (english): Pramenka breed-Lika strain; seasonality; sexual cycle; LH hormone; progesterone
• Language: croatian
• URN:NBN: urn:nbn:hr:178:354100
• Study programme: Title: Veterinary Medicine; Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: doktor/doktorica veterinarske medicine (doktor/doktorica veterinarske medicine)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2016-01-14 10:17:38