Comparison between laying hen performance in the cage system and the deep litter system on a diet free from animal protein
2006
Voslarova, E.(Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Ustav Verejneho Veterinarniho Lekarstvi a Toxikologie) E-mail:[email protected] | Hanzalek, Z.(Veterinarni Klinika, Hradec Kralove (Czech Republic)) | Vecerek, V.(Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Ustav Verejneho Veterinarniho Lekarstvi a Toxikologie) | Strakova, E.(Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Ustav Vyzivy, Zootechniky a Zoohygieny) | Suchy, P.(Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Ustav Vyzivy, Zootechniky a Zoohygieny)
We compared the performance of ISA BROWN hybrid hens housed either in cage batteries (CB, n=36) or in a deep litter system (DL, n=36) and fed a compound feed containing a vegetable supplement Proenergol instead of meat and bone meal. The number of eggs laid, their weight and shell quality, as well as the clinical state and mortality of the hens were monitored daily during 9 months. In comparison with DL hens, the performance of CB hens was characterized by significantly lower mean egg weight, higher number of eggs per hen per day, higher egg mass weight per hen per day, higher proportion of cracked eggs, lower mortality, and non-significantly higher egg yield. As shown by our results, the deep litter system led to lower laying performance.
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