The effect of dietary Salvia hispanica seed on the content of n-3 long-chain polyunsaturated fatty acids in tissues of selected animal species, including edible insects
2013
The aim of the study was to compare the deposition of n-3 long-chain polyunsaturated fatty acids (LC-PUFAn-3) in chicken breast meat (BM), thigh meat, quail eggs (QE) and tissues of two edible insect species (cricket [CR] and giant mealworm beetle [MB]) when feeding the animals with different amounts of Salvia hispanica seeds (SHS; source of α-linolenic acid, αLnn). The highest (P<0.05) LC-PUFAn-3 concentration in BM, TM and QE (11.7, 36.5 and 106mg/100g of fresh matter) was reached with the dietary SHS content of 60gkg−1 (chickens) and 75gkg−1 (quails), respectively. The eicosapentaenoic acid (EPA) concentration in CR fed the diet containing 500gkg−1 of SHS was 17mg/100g, which suggests a presence of Δ6- and Δ5-desaturases. When adjusted for changing αLnn intake, LC-PUFAn-3 content in BM, TM, QE and CR was 14, 31, 76 and 20mg/100g. Percentage of αLnn deposited in a given tissue that was converted to LC-PUFAn-3 in this tissue (tissue LC-PUFAn-3/tissue αLnn×100, in %; Y) decreased (P<0.001) with increasing dietary αLnn (mg/100g) both in BM+TM (taken as a one set; Y=39.2−0.03X, R2=0.35) and QM (Y=75.6−0.04X, R2=0.75).
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