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Polimorfizem genov za ß-laktoglobulin in [alfa]S1-kazein paške ovce = Polymorphism of ß-laktoglobulin [alfa]S1-casein genes in the Pag Island SheepIvanković, Ante, genetik ; Dovč, Peter, 1958-Polimorfizmi genov, ki kodirajo proteine mleka imajo pogosto pomembem vpliv na tehnološke lastnosti mleka. Čeprav so podatki o vplivu alelnih variant laktoproteinskih genov na tehnološke lastnosti ... mleka pogosto kontradiktorni, vselekcijske programe vse pogosteje vključujejo tudi informacije o genotipu na laktoproteinskih lokusih, da bi v populacijah povečali frekvenco alel z ugodnim učinkom na tehnološke lastnosti mleka. Glavni proizvod paške ovce je mleko, ki ga večinoma predelajo v paški sir. Izboljšanje tehnoloških lastnosti mleka te pasme bi bistveno pripomoglo k večji ekonomičnosti reje te pasme. Z namenom, da bi ugotovili frekvenco alelov laktoproteinskih genov, ki pomembno vplivajo na predelovalne lastnosti ovčjega mleka, smo v tej raziskavi tipizirali gena za ß-laktoglobulin in [alfa]s1-kazein štiridesetih živali. Genotipizacijo smo izvedli s pomnoževanjem delov obeh genov z verižno reakcijo s polimerazo in estrikcijo amplifikatov z ustreznimi endonukleazami. Na lokusu za ß-laktoglobulina smo našli alela A in B (0,5375; 0,4625), na lokusu za [alfa]s1-kazein pa smo določali aleli A in D (0,0875; 0,1340). Glede na podatke v literaturi lahko rečemo, da frekvence alel za ß-laktoglobulin in [alfa]s1-kazein populaciji paške ovce niso najugodnejše in da bi z uporabo molekularnih metod frekvenco alel z ugodnimi tehnološkimi lastnostmi lahko sorazmerno hitro povečali. To bi vodilo k izboljšanju ekonomičnosti reje te pasme, katere edini tržno uveljavljeni produkt je paški sir.Source: Acta agriculturae Slovenica. - ISSN 1581-9175 (Letn. 84, št. 2, dec. 2004, str. 121-130)Type of material - article, component partPublish date - 2004Language - slovenianCOBISS.SI-ID - 1675912
Author
Ivanković, Ante, genetik |
Dovč, Peter, 1958-
Topics
ovce |
pasme |
Pag |
mleko |
laktoglobulini |
kazein |
molekularna genetika |
polimorfizem
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Ivanković, Ante, genetik | ![]() |
Dovč, Peter, 1958- | 05098 |
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