Comparison of two different breeding systems laying hens in relation to egg shell quality, II

• Main Authors: Mária Angelovičová, Viera Ševčíková, Marek Angelovič, Ondřej Bučko
• Format: Article
• Language: English
• Published: Agroprint Timisoara 2014-11-01
• Series: Scientific Papers Animal Science and Biotechnologies
• Online Access: http://spasb.ro/index.php/spasb/article/view/1701

The aim of work was to follow up and statistically evaluate the selected quality indicators of egg shell according to two different breeding systems and different age of laying hens. An object of investigation were shell weight, share of the shell, strength and thickness of the shell for table eggs. There were used the laying hens of final hybrid ISA Brown reared in enriched cage system, and free range system. In both breeding systems were ensured the conditions with application of the welfare principles. There was used to feed a complete feed mixture HYD 10 in the both breeding systems.  The feeders were supplemented with feed by hand, daily and the same day was supplemented water to drinking troughs. Egg collection was hand in both breeding systems. This paper is a contribution to the solution of optimal breeding laying hens and production of high quality and safe production of table eggs. From the evaluation of the results was formulated conclusion, which shows that statistically significant (p ≤ 0.05) higher egg shell thickness was observed in the breeding free range system compared to the thickness of the egg shell in the breeding cage system, and in age 40 weeks of laying hens in both breeding systems compared to the thickness of the egg shell in age 30 weeks of laying hens. No statistically significant difference (p ≥ 0.05) was observed in egg shell weight between breeding cage system and free range system. Statistically significant (p ≤ 0.05) higher egg shell weight was observed in the age 40 weeks of laying hens in both breeding  systems compared to age 30 weeks of laying hens. There no statistically significant difference (p ≥ 0.05) was observed in the share of egg shell and egg shell strength between breeding cage system and free range system, nor between age 30 and 40 weeks of laying hens.