This study was conducted in the field of poultry, Agric. College, University of Muthanna to study the effect of replacing Silics-free rice husks for maize in diet on some production performance of broiler. Three hundred broiler chicks (Ross 308), one-day old were grouped in to four treatments each of 75 birds, and replicated three times. These were control, addition 5, 7 and 10% Silica-free rice husks to diet. Insignificant differences were detected among treatments up to the commencement of 3rd weeks of bird age in terms of body weight, weight gain, feed consumption and feed conversion. During the fourth and fifth weeks of bird age, however, addition of 7% Silica-free rice husks showed significant (P ≤ 0.05) increases, as compared to other treatments in live body weight, weight gain and feed conversion with average percentages in weekly body weights 1082.53 and 1776.51, and weekly gained weights 491.98 and 693.98, 1.61 and fed conversion factors1.61, 171 and weekly feed consumption 792.09, 1179.77, respectively, for check and 7% treatments. Furthermore, 7% Silica-free rice husks revealed the lowest mortality 1.33 and the highest production index 319.
Faisal M. Al-Tahir, Agric. College, Al-Muthanna Univ.
Kasim M. Hello, Science College, Al-Muthanna Univ.
Mohammed Thamer AL-Giashi, Agric. College, Al-Muthanna Univ.