YIELD RESPONSE OF THE LAYING HYBRIDSTO THE MODIFIED COOPS REARING SYSTEM

M.G Usturoi, I. Vacaru-Opriş, R.M. Radu-Rusu, Cristina Radu-Rusu, D. Simeanu, A. Usturoi

Abstract


The management conditions provided to the fowl having not free access to hall floor (Lc, L1exp and L2exp) allowed the expression of the used hybrid (Lohmann Brown) potential. Thus, control group yield counted 325.05 eggs, compared to just 311.34 eggs, produced by the L3exp (hens with free access on hall floor). Mortality has been correlated with the brooding density (7.46÷9.57% in experimental groups and 11.66% in Lc one). Shell was found thicker in L3exp group (0.369÷0.448 mm), as well as its breaking strength (0.337÷0.348 kg f/cm2). Microbial load of the shell gradually increased, especially in L3exp group (148.62÷258.94 germs/cm2, compared with 106.31÷106.61 germs/cm2).

Keywords


eggs; yield; alternative system; laying hybrid

Full Text:

PDF


DOI: http://dx.doi.org/10.15835/buasvmcn-asb:65:1-2:981




University of Agricultural Sciences and Veterinary Medicine
3-5 Manastur St., 400372 Cluj-Napoca
Romania
Tel: +40-264-596.384 | Fax: +40-264-593.792 
biroupublicatii@usamvcluj.ro