No. 1 (2021)
Articles

Evaluation of egg quality parameters of two Hungarian ostrich populations

Published June 1, 2021
Lili Dóra Brassó
University of Debrecen DE MÉK Állattenyésztéstani Tanszék, Állattenyésztési Tudományok Doktori Iskola";}
István Komlósi
University of Debrecen, Faculty of Agricultural and Food Sciences and Environmental Management Department of Animal Breeding Debrecen, Böszörményi Street 138.
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APA

Brassó, L. D. ., & Komlósi, I. (2021). Evaluation of egg quality parameters of two Hungarian ostrich populations. Acta Agraria Debreceniensis, (1), 51–57. https://doi.org/10.34101/actaagrar/1/8523

The aim of our study was to evaluate the quality parameters, porosity and weight loss of eggs deriving from the two most significant ostrich farms in Hungary. Quality parameters included weight, length, width, shape index, egg volume, surface area, circumference and shell volume.  The effect of storage conditions in both farms and the incubation technology on egg weight loss in farm “A” were also examined.  The research objective was to impart a comprehensive knowledge on egg quality parameters of the main ostrich populations in Hungary and to compare the trios and the farms with each other and the international literature. We could reveal significant differences between trios in all egg quality traits. In conclusion, the shorter and the narrower the eggs were, the more spherical shape they had.  Narrower eggs showed smaller surface area, volume, circumference and shell volume and vice versa. Eggs from farm “B” indicated significantly greater width, shape index, surface area, circumference and shell volume than farm “A”. A significant difference was observed in weight loss during storage between the farms.  Weight loss in farm “A” was a multiple of farm “B”. In farm “B” there was a weak, positive correlation between storage period and weight loss (r=0.22, P≤0.05), in farm “A” it was not significant (P=0.52). There was no relationship between the initial egg weight and weight loss either in farm “A” or farm “B” (P=0,21, P=0,69). A slight positive correlation could be noted between egg porosity and weight loss (r=0.24, P≤0.05). Pores count presented here was less than the international results. Poultry eggs contain the most pores at the blunt end, less via the equator and the least at the pointed end. In ostrich egg we found more pores via the equator against the blunt end. To draw more precise conclusions, further investigation should be carried out on porosity. Considering the fact that the length of storage period and the weight loss during incubation are in strict correlation with hatchability, we intend to extend our research aims to these traits.

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