Abstract
DOI: 10.15414/afz.2014.17.02.44â46 Received 7. May 2014 Ç Accepted 3. June 2014 Ç Available online 23. June 2014 The effect of housing systems (conventional cages and litter) and genotype (Czech hen and Lohmann) on egg quality was investigated. The totals of 1500 eggs were analysed. A significant interaction between housing system and genotype was found in shape index (P ⤠0.001) and eggshell weight (P ⤠0.027). The housing system significantly (P Ë 0.001) affected egg weight. Higher values in Czech hen were detected in litter on other hand in Lohmann were found in cage. Higher egg weight (61.18g vs. 49.19g) and eggshell weight (6.02g vs. 4.79g) was found in Lohmann compared to Czech hen. Shape index (76.46g vs. 75.15g) and deformation (0.31N vs. 0.29N) was higher in eggs from Czech hen compared to Lohmann. Significant interaction between housing system and genotype in albumen weight (P ⤠0.023), albumen share (P ⤠0.018), albumen index (P ⤠0.042) and yolk share (P ⤠0.034) were detected. Yolk share, yolk index and yolk colour were higher in eggs from Czech hen compared to yolk weight. Keywords : hens, genotype, housing system, egg quality
Highlights
The monitoring of egg quality characteristics is important mainly in terms of production economy
Higher values in Czech hen were detected in litter on other hand in Lohmann white were found in cage
A significant interaction between housing system and genotype was found in shape index (P ≤0.001) and eggshell weight (P ≤0.027)
Summary
The monitoring of egg quality characteristics is important mainly in terms of production economy. It is very important to evaluate the egg quality characteristics and factors affecting them (Zita et al, 2009). Egg quality is influenced by many internal and external factors, of which genotype and housing system are major importance (Tůmová et al, 2009). The genotype plays an important role egg weight and other egg characteristics (Heil and Hartmann, 1997; Ledvinka et al, 2000; Leyendecker et al, 2001; Vits et al, 2005). Egg quality characteristics are better in eggs produced in cages compared to alternative housing systems (Moorthy et al, 2000; Tůmová a Ebeid, 2003; Ledvinka et al, 2004). The aim of study was to evaluate the effect of housing system on egg quality in contrast genotypes
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