High-value valorization of <i>Periplaneta americana</i> residue: intestinal health regulation in pre-bred hens and circular economy applications.

ABSTRACT: This study investigated the effects of Periplaneta americana residue (PAR) on the growth performance and gut health of laying hens during the pre-breeding phase. Over an 11-week period, 450 one-month-old Nandan Yao chickens were assigned to six dietary groups in which PAR replaced 0%, 10%, 20%, 30%, 40%, or 50% of the soybean meal. The results revealed no significant impact of PAR on growth performance (p > 0.05). However, PAR supplementation significantly elevated duodenal and jejunal immunoglobulin A (IgA) levels, as well as ileal immunoglobulin M (IgM) and immunoglobulin G (IgG) levels (p < 0.05). Although no overall significant differences were observed in the villus height (VH), width (VW), crypt depth (CD), or the villus-to-crypt (V/C) (p > 0.05), ileal VH

SUBMITTER: Tao S 

PROVIDER: S-EPMC12739957 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature