Effect of Use Different of L-Carnitine on Productive Performance on Egg of Two Breeds of Japanese Quail

Abstract

This study was conducted on 270 quail females at the age of 42 days from two strains of Japanese quail, the desert and white, in order to show the effect of the strain and the levels of carnitine (0,200,250) mg carnitine/kg feed by three treatments and three replicates for each strain during the egg production stage (42-101) days. The results of study showed that there was a significant difference (p≤0.05) for the effect of strain on the number of eggs, the ratio of egg production HD%, the height of albumen, and the height of yolk, while there were no significant differences in egg weight, total egg mass, egg white ratio, yolk ratio, shell ratio shell thickness, yolk diameter, feed consumption rate, and feed conversion efficiency and mortlity ratio. The results showed, in relation to the effect of carnitine levels, that there were a significant differences (p≤0.05) in the characteristics of egg weight, total egg number, total egg mass, HD% egg albumen height, and yolk diameter, while the differences were not significant in the characteristics of whiteness and yolk ratio, shell, thickness of shell,, feed consumption rate (g/bird), feed conversion efficiency g/g egg, and mortality ratio. As for the effect of the interaction between the quail strains and three levels of carnitine, the results of the statistical analysis showed that there were significant differences (p≤0.05) in the egg weight, the number and the mass of the total egg, HD%, the ratio of whiteness, yolk, shell, height and diameter of the albumen, feed consumption rate, and feed conversion efficiency, while the difference were not significant in the ratio of yolk, thickness of shell, height of yolk and the ratio of mortality