Environmental factors influencing the slaughter value and flesh quality of the common carp in four typical fish farms in Hungary

Abstract

Four important hungarian common carp (Cyprinus carpio l.) breeds (attala mirror, attala scaled, hortobágy scaled and Szeged mirror) harvested from different fish farms were analysed in this study. Main body indices, slaughter characteristics, fillet fat content, and conventional fish flesh quality characteristics were measured and compared. the slaughter value of the mirror strains tended to exceed that of the scaled type carps. For the calculated body indices (profile, cross-sectional, head and tail index) the influence of strain was statistically proven. Fillet fat content was significantly (P<0.01) affected by strains/ponds. The pH value of the fillet was significantly influenced by the strain as a fixed factor. Large, strain dependent variability was proven in fat content besides identical fillet dry matter contents. It was assumed that culture conditions and strain largely influence and lead to a marked variability of the body composition and flesh quality of the most important Hungarian fish species.

Replacing fish meal with alternative protein sources in common carp’s feed

“…Several factors may influence the lower pH detected on the flesh of the common carp in this study such as the time lag on filleting the fish, and the decomposition of glycogen which increases the lactic acid during or immediately after slaughter (Rahmanifarah et al, 2011). However, the pH observed in this study remained stable with different dietary treatments and was in line with the experiment conducted by Varga et al, (2013).…”

“…Body weights were measured and filleted for the meat quality determination. Flesh quality investigations were carried out according to Varga et al (2013). One-way ANOVA (followed by Tukey Post Hoc test) was used to analyze the effect of different diets on r growth and feed utilization, slaughter value and meat quality parameters of common carp (SPSS for Windows 14.0).…”

Prediction of body composition in mirror carp (&lt;i&gt;Cyprinus carpio&lt;/i&gt;) by using linear measurements in vivo and computed tomography post-mortem

“…During this study, no effects of sex on carcass composition were observed. On the one hand, Hancz et al (2003a), Fajmonova et al (2003) and Varga et al (2013) found no influence of sex on the body composition of carp (sample size: n = 18, n = 48 and n = 80). Kocour et al (2007), on the other hand, investigated a larger number of carp (n = 331) and found a significant influence of sex, resulting in females being larger and fatter than males.…”

Factors Influencing the Lipid Content and Fatty Acids Composition of Freshwater Fish: A Review

“…But authors admit that fat content should also influence the feeding (mixed feed instead of barley in one farm). Similarly, Varga et al [25] studied carp from different cultures indifferent regions of Hungarywith identical feeding. They found that environmental factors influence significantly (P = .001) among other fat content.…”