Effects of Chromium, Zinc, and Lemuru Oil Supplementation on the DigestiveSystem and Internal Organs of IPB D1 Chicken

Abstract

The increasing demand for chicken meat in Indonesia has encouraged the development of superior local
chickens such as IPB D1, which have the ability to utilize local feed and exhibit rapid growth. This
study aimed to determine the role of zinc, chromium, and lemuru oil supplementation on the digestive
system development and internal organs functionality of IPB D1 chickens. A total of 100 twelve-weekold IPB D1 chickens were assigned to four treatment groups: control (P0), feed supplemented with
zinc and chromium (P1), feed supplemented with lemuru oil (P2), and feed supplemented with zinc,
chromium, and lemuru oil (P3). A Completely Randomized Design (CRD) was applied, and significant
differences were analyzed using Tukey’s post hoc test. The findings revealed no significant impact of
supplementation on the relative length of the digestive tract. Nonetheless, a significant increase in the
percentage of gallbladder weight was observed in the P3 group (0.09%–0.13%). In contrast, the heart
weight percentage was significantly reduced compared to the control group (0.48%–0.58%). These
results indicate that combined supplementation of zinc, chromium, and lemuru oil may modulate lipid
metabolism and cardiovascular function in IPB D1 chickens. Further investigations are required to
establish optimal dosages and assess the long-term implications on the performance of IPB D1 chickens.