Research Information System
Animal Science Papers and Reports, vol.39, no.2, pp.169-177, 2021 (SCI-Expanded, Scopus)
The purpose of this study was to conduct an input-output analysis of various commercial layer hybrids. The Rhode Island Red I x Barred Rock I (Atak-S), Black Line x Blue Line (Atabey), Rhode Island Red II x Line 54 (Atak) together with Nick Chick and Brown Nick foreign hybrids were used. A total of 45 hens, nine from each hybrid, were placed individually into separate cages. The study covered a 49-week of period between 24 and 72 weeks. All the inputs, energy values of inputs and the energy value of products were calculated. Cultural energy expended for feed constituted more than half of the total cultural energy and it was highest for Atak-S (P<0.05). Energy use efficiency for protein defined as cultural energy expended per MJ protein energy was better for Nick Chick and worse for Atak-S (P<0.05). The Nick Chick showed better energy use efficiency, defined as the total cultural energy expenditure divided by energy output compared to Atak-S (P<0.05) and had similar values to those of the Atak, Atabey and Brown Nick (P>0.05). Results show that hybrids differ in terms of their cultural energy use efficiency and thus a suitable hybrid adapted to the region should be sought for sustainable laying hen production.