Effect of encapsulated Cosmos caudatus leaf extract on the physiological conditions, immune competency, and antioxidative status of broilers at high stocking density

• Published in: Annals of animal science 2022-04, Vol.22 (2), p.653-662
• Main Authors: Agusetyaningsih, Ikania, Widiastuti, Endang, Wahyuni, Hanny Indrat, Yudiarti, Turrini, Murwani, Retno, Sartono, Tri Agus, Sugiharto, Sugiharto
• Format: Article
• Language: English
• Subjects: Birds; Blood; Body weight gain; broiler; Bursa of Fabricius; Chickens; Chicks; Cosmos; Cosmos caudatus; Density; Depletion; Diet; Encapsulation; Erythrocytes; extract; Feed additives; Feed efficiency; Hematocrit; Hemoglobin; high stocking density; Juveniles; Leaves; Leukocytes; Lymphocytes; Metabolic rate; Organs; Physiological effects; Physiology; Plant extracts; Poultry; Serum albumin; Spleen; Stocking; Superoxide dismutase
• ISSN: 2300-8733; 1642-3402; 2300-8733
• DOI: 10.2478/aoas-2021-0043

The present study aimed to investigate the effect of encapsulated leaf extract on the physiological conditions, immune competency, and antioxidative status of broiler chickens raised at a high stocking density. After 15 days of rearing, 370 Lohmann broiler chicks were assigned to five treatment groups, including T0 (chicks were raised at a density of 10 birds/m and received no additive), T1 (chicks were raised at a density of 16 birds/m and received no additive), T2 (chicks were raised at a density of 16 birds/m and received 0.5 g/kg encapsulated leaf extract), T3 (chicks were raised at a density of 16 birds/m and received 1.0 g/kg additive), and T4 (chicks were raised at a density of 16 birds/m and received 1.5 g/kg additive). On days 28 and 42, blood samples from two chicks per pen were collected. On day 42, the chicks that had been blood-sampled were sacrificed, and blood samples and lymphoid organs (i.e., bursa of Fabricius, spleen, and thymus) were collected. The daily weight gain and feed efficiency of broilers (P