| The effects of genotype and protein source on the performance of male layer hybrids compared to a fattening strain were investigated. The layer hybrids Lohmann Brown (LB, n = 90, male), Lohmann Selected Leghorn (LSL, n = 90, male) and the fattening hybrid Hubbard JA-757 (HUB, n = 90, mixed sex) were divided into three feeding groups: 1) commercial feed with 25,5 % soybean cake (Control), 2) control diet + alfalfa meal ad lib. (Alf-ext) and 3) control diet inclusive 12 % replace of soybean cake by alfalfa meal (Alf-int). Fattening periods were 63, 91 and 104 days for HUB, LB and LSL, respectively. Final weights were influenced by the interaction of genotype and feed (HUB 1843, LB 1871, LSL 1631 g). Highest daily weight gains showed HUB, followed by LB and... |
