The effect of ploidy on the fatty acid profile during the reproductive cycle of female rainbow trout (Oncorhynchus mykiss)

Triploidy does not decrease contents of eicosapentaenoic and docosahexaenoic acids in filets of pink salmon Oncorhynchus gorbuscha

“…Due to are sterile and at adult stages exhibit better growth than their diploid counterparts, because the 53 sterility prevents energy loss for gamete production and negative effects of sexual maturation for 54 meat quality (Flajshans et al, 2010;Ozorio et al, 2012).Moreover, the use of sterile triploids in aquaculture can reduce the risks of propagation of non-native escapees into the wild (Ozorio et al, 2012;Ribeiro, Gomes, Vieira, Tabata, Takahashi, & Moreira, 2012). Nevertheless, in spite of the better fillet quality of triploids because of the prevention of mobilization of stored lipids for gonad development, they were reported to have a lesser sum of PUFA in the flesh compared to diploid individuals (Flajshans et al, 2010;Ozorio et al, 2012;Manor, Weber, Salem, Yao, Aussanasuwannakul, & Kenney, 2012;Ribeiro et al, 2012;Manor, Weber, Cleveland, & Kenney, 2014). Therefore, it was suggested to improve PUFA content in muscle of triploids by dietary supplementation of PUFA (Ribeiro et al, 2012).…”

“…Nevertheless, in spite of the better fillet quality of triploids because of the prevention of mobilization of stored lipids for gonad development, they were reported to have a lesser sum of PUFA in the flesh compared to diploid individuals (Flajshans et al, 2010;Ozorio et al, 2012;Manor, Weber, Salem, Yao, Aussanasuwannakul, & Kenney, 2012;Ribeiro et al, 2012;Manor, Weber, Cleveland, & Kenney, 2014). Therefore, it was suggested to improve PUFA content in muscle of triploids by dietary supplementation of PUFA (Ribeiro et al, 2012).…”

“…It is important to note, that All the above data on less PUFA in triploids were based on measurements of their percentages in total fatty acids (Flajshans et al, 2010;Ozorio et al, 2012;64 65 Manor et al, 201264 65 Manor et al, , 2014Ribeiro et al, 2012). Meanwhile, it was demonstrated, that to for estimation of nutritive value for humans, measurements of PUFA per mass of consumed filets, rather than their percentage in total fatty acids should be carried out (Gladyshev, Sushchik, Gubanenko, Demirchieva, & Kalachova, 2007;Gladyshev et al, 2012;Huynh& Kitts, 2009).…”

“…Oncorhynchus mykiss are often used and their fatty acid composition is studied (Ozorio et al, 2012;Manor et al, 2012Manor et al, , 2014Ribeiro et al, 2012). Studies of other salmonid species are also desirable to expand and clarify data on nutritive quality of triploid fish.…”

“…Triploidy was confirmed by measuring the length of the nucleus major axis of erythrocytes (Flajshans et al, 2010;Ribeiro et al, 2012). For each specimen, 50 nuclei were measured.…”