Istraživanje je provedeno u fazaneriji Božur u mjestu Satnica Đakovačka. Fazani su držani u zatvorenom objektu uz mogućnost ispusta. Za potrebe istraživanja uzorkovano je 120 jaja običnog fazana, smeđe i zelene boje ljuske. Ženke su pronijele početkom ožujka, a krajem ožujka i početkom svibnja obavljena su uzorkovanja jaja za analize. Prilikom prvog uzorkovanja jaja u ožujku fazanke su bile u 5. tjednu nesivosti, a prilikom uzorkovanja jaja u svibnju bile su u 10. tjednu nesivosti. Cilj rada bio je procijeniti utjecaj perioda nesenja na kvalitetu rasplodnih jaja običnog fazana (Phasianus colchicus) iz kontroliranog uzgoja, kao i utvrditi sadržaj masnih kiselina i kolesterola u žumanjcima jaja. Fazani su hranjeni krmnom smjesom izbalansiranom na 17,30 % proteina. Hranjenje i napajanje bilo je ad libitum. U svrhu istraživanja korištene su različite priznate znanstvene metode za određivanje kvalitete jaja, sadržaja masnih kiselina i kolesterola u žumanjcima jaja. Istraživanjem je utvrđeno da period nesenja utječe na masu jaja, površinu jaja, masu ljuske, masu bjelanjka, masu, visinu i pH žumanjka (P<0,05). Sadržaj masnih kiselina bio je ujednačen u oba termina analize (ožujak-svibanj), s tim da su vrijednosti miristinske, palmitinske i ΣSFA bile značajno veće kod jaja uzorkovanih u svibnju u odnosu na ožujak, a sadržaj linolne i ukupne n-6 PUFA u tom periodu bile su značajno niže (P<0,05). Na ostale analizirane pokazatelje period nesenja jaja nije imao utjecaja (P>0,05). Prema rezultatima istraživanja može se zaključiti kako se kvaliteta rasplodnih jaja običnog fazana iz kontroliranog uzgoja mijenja s obzirom na period nesenja (ožujak 5. tjedan nesivosti odnosno svibanj 10. tjedan nesivosti). The research was conducted at the pheasant farm Božur in Satnica Đakovačka. Pheasants were kept in a closed building with the possibility of an outlet. For the purposes of the research, 120 common pheasant eggs, with brown and green shells, were sampled. Females laid eggs in early March, and egg sampling for analysis was carried out at the end of March and the beginning of May. During the first egg sampling in March, the pheasants were in the 5th week of laying, and when the eggs were sampled in May, they were in the 10th week of laying. The aim of the work was to assess the influence of the laying period on the quality of common pheasants’ (Phasianus colchicus) breeding eggs from controlled breeding, as well as to determine the acids content fatty and cholesterol in egg yolks. Pheasants were fed a feed mixture balanced to 17.30% protein. Feeding and watering was ad libitum. For the purpose of research, various recognized scientific methods were used to determine the quality of eggs, the fatty acids content and cholesterol in egg yolks. The research found that the laying period affects egg weight, egg surface, shell mass, albumen weight, and weight, height and pH of yolk (P<0.05). The fatty acids content was uniform in both periods of analysis (March – May), with the fact that the values of myristic, palmitic and ΣSFA were significantly higher in eggs sampled in May compared to March, while the content of linoleic and total n-6 PUFA in that period was significantly lower (P<0.05). The laying period had no effect on other analyzed indicators (P>0.05). According to the research results, it can be concluded that the quality of breeding eggs of common pheasants from controlled breeding changes with regard to the laying period (March 5th week of laying and May 10th week of laying).