Bor ve Zeolit İçeren Yemlerin Yaşlı Yumurtacı Tavuklar Üzerine Etkileri

The effects of feeds containing boron and zeolite, either alone or in combination, on aged laying hens was assessed in the study. A total 576 laying hens of commercial white strain (Super Nick), 65 wk of age, were used in this experiment which was lasted for 15 weeks. Experimental feeding groups were as follows: basal diet without boron and zeolite (control), basal diet with added boron (100 mg/kg diet), basal diet with zeolite (8 g/kg diet) and basal diet with combination of boron (B) and zeolite (100 mg/kg boron + 8 g/kg zeolite), respectively. B and zeolite, either alone or combination, reduced egg weight (P