Changes in hay yield and quality of bulbous barley at different phenological stages

Authors : Ferat UZUN

Pages : 1-9

View : 15 | Download : 7

Publication Date : 2010-02-01

Article Type : Research Paper

Abstract :The objective of this study was to determine the changes in hay yield and quality components at different phenological stages of a bulbous barley insert ignore into journalissuearticles values(Hordeum bulbosum L.); population handpicked from natural flora during 2003-2007 in Samsun, Turkey. The phenological stages of bulbous barley during spring-summer insert ignore into journalissuearticles values(grazing maturity, early heading, heading, and milk-dough); and autumn insert ignore into journalissuearticles values(early growing); were investigated. Significant differences were observed in hay yield, relative feed value insert ignore into journalissuearticles values(RFV);, crude protein insert ignore into journalissuearticles values(CP);, acid and neutral detergent fiber insert ignore into journalissuearticles values(ADF and NDF);, Ca, Mg, K, P, Mn, Fe, and Zn concentrations, and Kinsert ignore into journalissuearticles values(Ca + Mg);-1 and Ca P-1 ratios of DM, depending on development stages. Hay yield, ADF, NDF concentrations, and the Ca P-1 ratio increased, whereas RFV, CP, Ca, Mg, K, P, Mn, Fe, and Zn concentrations, and the K insert ignore into journalissuearticles values(Ca + Mg); -1 ratio in DM decreased as plant development progressed. The Cu concentration was inconsistent at all phenological stages. The results of this research indicate that harvesting or grazing should not be delayed in order to obtain the maximum benefit of bulbous barley hay. Additionally, while some minerals were inadequate, others were in excess, in terms of healthy feeding, at all development stages. Therefore, additional supplementation with some minerals is needed for bulbous barley-based ration or bulbous barley should be grown in mixtures with legumes for feeding productive livestock.
Keywords : Key words Bulbous barley, phenological stage, hay yield, mineral content, livestock