We investigate the effects of the immune function (HI titer) in broilers fed diets containing Hermetia illucens (H. illucens) peptide extract over a 40-day period. Twenty-four broiler chicks (Arbor Acres, 1 d old) were divided into four groups and fed different diets (control, 0.1%, 0.5%, and 1% H. illucens peptide extract). To evaluate HI titer, all broilers were vaccinated with H9H2 vaccine subcutaneously on the lateral thorax, according to the manufacturer’s recommendations. Similar HI titer was observed with 1% H. illucens peptide extract treatment compared to the control after 40 days (p>0.01). Groups fed 0.5% H. illucens peptide extract demonstrated the most effective immune effects (p<0.01), followed by groups fed 0.1% H. illucens peptide extract. In conclusion, using 0.1% or 0.5% H. illucens peptide extract before or after vaccination improved HI titer immune function in broilers.

Abstract
 1. 서 론
 2. 재료 및 방법
 3. 결과 및 고찰
 4. 결 론
 REFERENCE

• 지상윤(농촌진흥청 국립축산과학원) | Sang-Yun Ji (National Institute of Animal Science, Rural Development Administration)
• 박관호(농촌진흥청국립농업과학원) | Kwan-Ho Park (National Institute of Agricultural Sciences, Rural Development Administration)
• 김기현(농촌진흥청 국립축산과학원) | Ki-Hyun Kim (National Institute of Animal Science, Rural Development Administration)
• 이희삼(농촌진흥청국립농업과학원) | Heui-Sam Lee (National Institute of Agricultural Sciences, Rural Development Administration)
• 최규성(중부대학교 바이오융합학부) | Gyu-Sung Choi (Department of Companion Animal & Animal Resource, Joongbu Univeristy)
• 임연지(중부대학교 바이오융합학부) | Yeon-Ji Lim (Department of Companion Animal & Animal Resource, Joongbu Univeristy)
• 유리(중부대학교 바이오융합학부) | Ri Yu (Department of Companion Animal & Animal Resource, Joongbu Univeristy)
• 최인학(중부대학교 바이오융합학부) | In-Hag Choi (Department of Companion Animal & Animal Resource, Joongbu Univeristy)
• 정태호(중부대학교 바이오융합학부) | Tae-Ho Chung (Department of Companion Animal & Animal Resource, Joongbu Univeristy) Corresponding author