Effect of dietary supplementation of bamboo vinegar and organic acids on production performance and eggshell quality in laying hens
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Abstract
Aged laying hens have a decreased eggshell quality and an increased incidence of broken eggs in the late phase of production. Therefore, various methods should be sought to increase the quality of eggshells. This study investigated the effects of dietary supplementation of bamboo vinegar and mixed organic acids in laying hens on production performance and eggshell quality. A total of 48 Hisex Brown hens (70-week-old) were assigned into treatments with 4 replicates of 4 birds each, with a completely randomized design. The laying hens were fed a diet supplemented with bamboo vinegar and mixed organic acids at 0.4 % level compared to the control group without supplementation for 8 weeks. Feed intake, egg production, egg weight, egg mass, damaged egg rate, and feed conversion ratio were recorded. Egg qualities were measured on the last day of the experiment. The results found that supplementation of both acidifiers in the diet tended to improve egg production (p = 0.085), feed conversion ratio (p = 0.053), and reduce damaged egg rate (p = 0.055) when compared to the control group. For egg quality, supplementation of acidifiers increased eggshell thickness (p < 0.05) and eggshell strength (p = 0.075) compared to the control group. The results of the experiment showed that supplementation of acidifiers in the laying hen diet at 0.4 % level improved egg production performance and eggshell quality.
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References
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