Hematological parameters and organ weighs in chickens of two strains

Abstract

Various hematological parameters, organ weights and water content in two different strains of chickens (Shaver and New Hampshire) were studied in 10 males and 10 females from each strain at different ages. Shaver animals usually showed higher hematocrit and hemoglobin values than the New Hampshire, while no strain differences were observed for plasma iron. The absolute weights of liver, spleen, kidneys, heart and feathers were usually lower in the Shaver, but relative weights tended to reduce the differences and feathers presented maximum values in the Shaver at all ages. A decrease of absolute and relative weights in the spleen during laying was noticed. The water content for a given organ was similar in both strains at all ages except for feathers which showed a decrease with age. The above cited differences between the two strains may be related to their different relative metabolism, as the Shaver have more active behavior and smaller size.