The effects of eggshell and oyster shell supplemental as calcium sources on performance, eggshell quality and mineral excretion in laying hens

DOI: 10.5958/0976-0555.2015.00056.4    | Article Id: B-218 | Page : 205-209
Citation :- The effects of eggshell and oyster shell supplemental as calcium sources on performance, eggshell quality and mineral excretion in laying hens.Indian Journal Of Animal Research.2015.(49):205-209
Osman Olgun*, Alp Önder Yildiz and Yusuf Cufadar oolgun@selcuk.edu.tr
Address : Department of Animal Science, Faculty of Agriculture, Selcuk University, 42075 Konya, Turkey.

Abstract

A study was conducted to determine the influence of different calcium sources in layer diets on performance, eggshell quality and mineral excretions. A total of 72 Hy-Line W36, layer birds of 25 weeks old, were distributed in 6 experimental groups randomly. In each experiment group there were 4 replicates, and in each replicates there were 3 birds. During the 12 weeks experiment period, birds were fed 6 experimental diets. Experimental diets were consisted of various calcium sources for meeting the calcium requirements. It was control (limestone), 1/3 eggshell, 1/3oyster shell, 1/3 eggshell+1/3 oyster shell, 2/3 eggshell and 2/3 oyster shell. Dietary different sources of calcium had no significant effect on body weight change, feed conversion ratio, eggshell breaking strength, eggshell thickness, and eggshell phosphorus and magnesium contents (p > 0.05). The different sources calcium had a significantly effect on egg production, egg weight, egg mass, feed intake and eggshell weight in laying hens (p

Keywords

Eggshell Eggshell quality Laying hens Mineral excretion Oyster shell.

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