Korean Journal of Agricultural Science (Korean J. Agric. Sci.; KJOAS)
Indexed in KCI (Korea Citation Index), Open Access, Peer Reviewed.
pISSN 2466-2402
eISSN 2466-2410

Production performance and egg quality parameters in Hy-line brown laying hen in response to extra feed supplementation



Hossain MM, Park JH, Kim IH. Production performance and egg quality parameters in Hy-line brown laying hen in response to extra feed supplementation. Korean Journal of Agricultural Science 50:291-298.

Korean Journal of Agricultural Science (Korean J. Agric. Sci.) 2023 June, Volume 50, Issue 2, pages 50:291-298. https://doi.org/10.7744/kjoas.20230020

Received on 25 January 2023, Revised on 26 April 2023, Accepted on 11 May 2023, Published on 30 June 2023.

Production performance and egg quality parameters in Hy-line brown laying hen in response to extra feed supplementation

Md Mortuza Hossain, Jae Hong Park, In Ho Kim*

Department of Animal Resource and Science, Dankook University, Cheonan 31116, Korea

*Corresponding author: inhokim@dankook.ac.kr


The purpose of this experiment was to determine the influence of providing laying hens with extra feed on egg production and egg quality parameters. A total of 480 laying hens (38-weeks old), were divided into five treatment groups (eight replicate cages/treatment and 12 layer/replicate) according to their starting body weight (1.98 ± 0.05 kg) in this four-week feeding trial. Five different feed allowances of the same diet (105, 110, 115, 120, and 125 g·day-1·bird-1) were assigned to layers. Daily inspections of remaining feed (around 0.1g) and layer mortality (0%) showed no harmful impact of supplying extra feed to layers. Providing 120 and 125 g of feed per day to layers resulted in the highest final body weight, large-egg ratio, and improved yolk color among all treatment groups. Layers receiving 125 g of feed daily had the highest egg weight, but the highest egg production ratio was observed in layers receiving 110 g of feed/day. The additional supply of feed did not have a negative impact on the productive performance or egg quality of the layers. The provision of 125 g feed per day led to an improvement of large-egg ratio, egg weight, and yolk color, but likely led to obesity of the layers, which manifested as an increase in body weight and a decline in the egg production ratio. We concluded that 110 grams of feed was the proper quantity after taking into consideration the significance of the health of the laying hen to the overall production performance.


egg quality, extra feed supply, laying hen, productive performance


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Authors Information

Md Mortuza Hossain, https://orcid.org/0000-0002-6732-286X

Jae Hong Park, https://orcid.org/0000-0002-2025-0141

In Ho Kim, https://orcid.org/0000-0001-6652-2504

Conflicts of interest

No potential conflict of interest relevant to this article was reported.


The Department of Animal Resource & Science was supported through the Research-Focused Department Promotion & Interdisciplinary Convergence Research Projects as a part of the University Innovation Support Program for Dankook University in 2022.