engleski

Productivity of hens and egg quality in organic and conventional housing system

The research was conducted with two groups of hrvatica (dudica) chicken indigenous breed layers. A control group of layers was kept in the conventional housing system (deep litter), while experimental group was kept in the organic system. Layers from the organic system, compared to conventional system, laid fewer eggs (195:210), they consumed more feed on daily basis (140 g : 125 g), and more feed per kilogram of egg weight (4.16 kg : 3.62 kg). Eggs from organic layers, compared to those from the conventional system, had a significanty (p<0.01) higher weight (63.0 g : 60.0 g), thicker shell (0.35 mm : 0.33 mm) and more intensive yolk colour (12.00 : 10.75 Roshe). Considering egg yolk index, egg weight index, pH of yolk, pH of white, and Haugh units, no-significant differences (p>0.05) were determined between the organic and the conventional system of housing hens. Profitability of egg production in the organic system will mostly depend, on market evulation of the production.

organic system ; conventional system ; hens ; egg quality

nije evidentirano