Effect of zinc sulfate, Ascorbic Acid and Sodium Bicarbonate to laying hens diet with saline drinking water on performance and egg shell quality
2011
Mirabdolbaghi , J | Lotfolahian, H | Afraz , F
An experiment was conducted to study the effects of saline drinking water (Tap water + 2 g/lit. Na) and supplementation of zinc sulfate, Ascorbic Asid and Sodium Bicarbonate to diet on laying hen performance and egg shell quality. Zinc sulfate in levels (0, 0.28 and 0.56) also Ascorbic Asid in levels (0, 1.5 and 3) and Sodium Bicarbonate in levels (0, 4 and 8) supplemented to diets. This addatives seprately added in diets with salin drinking water in 3 trails on 324 commercial laying hens (Hy-Line) in 32 weeks old for 12 weeks. The data was analyzed in randomized complete block design with factorial arrangement (3*2) in 3 replication and 6 hens in each replicate. The results showed that drinking water content 2 gr per liter NaCl decreased shell thickness, present of shell weight and egg shell weight of unit surface area(p0.05). Addition of 0.28 gr/Kg zinc sulfate in diet with saline drinking water improved egg production, egg mass(gr), feed conversion ratio and eggshell quality significantly (p0.05). Addition of 3 gr/Kg Ascorbic acid in diet with saline drinking water decreasd egg shell defects (p0.05). Addition of 8 gr/Kg Ascorbic acid in diet with saline drinking water improved egg production,egg mass (gr) and feed conversion ratio also decreasd egg shell defects (p0.05).
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