Effect of Gamma Amino Butyric Acid from Germinated Paddy Rice Supplementation on Egg Performance and Qualities

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Wirot Likittrakulwong
Narakamol Laorodphan
Khongsak Srikaeo
Pisit Poolprasert
Tossaporn Incharoen
Skorn Koonawootrittriron


Several physical factors could related to poor egg qualities and loss of production. This study aimed to determine the effects of feed supplemented with γ-amino butyric acid (GABA) from germinated paddy rice (GPR) on egg performance and qualities. A total of 48 laying hens (Ross brown breed), at 34 weeks old, were fed for 49 days. The feeds containing GABA contents of 0 (control), 3.152 and 6.305 mg/kg were fed to chickens, each at four replicates. Hen-day egg production and various egg qualities were assessed. It was found that GABA supplemented feeds improved egg qualities as evidenced by the increased shell strength of the eggs. However, the albumen high and haugh unit of the eggs decreased. Furthermore, GABA supplemented feeds at the studied levels (0-6.305 mg/kg) did not have any effect on hen-day egg production, feed intake and egg weight as well as most of the other egg qualities, including egg width, egg shell weight, albumin weight, yolk weight and yolk ratio. This study suggested that 6.305 mg/kg of GABA from GPR was the optimum level for laying hens to improve egg qualities.

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