Replacing soybean oil with increasing levels of soybean acid oil in diets of coturnix quails (Coturnix coturnix coturnix) and the effects on egg quality

Abstract

The effects of increasing levels of soybean acid oil in diets of quails on the quality of eggs were evaluated over a period of 56 days. A completely randomized design with five treatment levels of soybean acid oil (0, 2, 4, 6, and 8%) as a replacer for soybean oil and eight replicates of two quails each were used. A total of 240 fresh eggs were used for quality analysis, and 400 eggs were stored at 23ºC over a period of 0, 7, 14, 21, and 28 days for analysis of shelf-life. Polynomial regression and ANOVA with repeated measurements and Tukey´s tests were used. Soybean acid oil linearly increased the intensity of red (a* = -5.26 + 0.14 x, R 2 = 0.89, P = 0.01) and yellow (b* = 42.32 + 0.44 x, R 2 = 0.88 P = 0.01). All other variables of egg qualitywere not affected by the treatments, with the exception of sensory attributes, such as odor and aftertaste, which were more pronounced with soybean acid oil. In conclusion, soybean acid oil affects the intensity of yellow and red color of the yolk. Trained assessors detected differences in odor and aftertaste of eggs when soybean acid oil was included in the quail diet.

Influence of free fatty acid content and degree of fat saturation in laying hen diets on egg quality, yolk fatty acid profile, and cholesterol content

“…(2001) obtained significantly higher egg weight when SO was used in laying hen feed compared to other sources of fat (tallow, linseed, and olive oil). However, differences in production performance or egg weight laid by birds fed SO or SAO have not been observed in similar studies ( Pardío et al ., 2005 ; Perez-Bonilla et al, 2011 ; Irandoust et al, 2012 ; Roll et al ., 2018a ). In our study, however, differences in egg size are almost entirely attributable to the high weight recorded for hens fed S45 (63.84 g), with the remaining groups presenting considerably lower average values (59.00–60.95 g) and egg mass remained unaffected.…”