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- MakaleAçık Erişim2026Scopus SJRQ1Effects of graviola oil extract on fattening performance and circadian rhythms of adipokine, cardiac and mitochondrial function markers in lambs
Kotan, Gökşad Cemil; Bayraktar, Bülent
Background: This study investigated the effects of dietary graviola (Annona muricata L.) oil extract (GOE) (supplemented at 200, 400, and 600 mg/kg) on the growth performance and circadian rhythm profiles of adipokine, cardiac, and mitochondrial function biomarkers in 48 male Anatolian Merino lambs (2.5 months old). Methods: Lambs were assigned to a control group (G0) or supplementation groups (G200, G400, G600 mg/kg) for a 60-day trial (70 days total). The study was conducted under a 12-h light/12-h dark cycle to ensure controlled environmental conditions. To analyze circadian profiles, blood samples were collected on days 0, 15, 30, 45, and 60 at four time points (07:00, 13:00, 19:00, and 01:00). Serum levels of Apelin, cTnI, BMAL1, MOTS-c, and BMCP1 were measured by ELISA. Data were analyzed using GLM Multivariate analysis (p < 0.05). Results: Key findings showed the G400 dose resulted in the most effective linear increase in live weight and live weight gain by day 60, and had a significant overall effect on live weight (p < 0.05). The G200 dose significantly improved the feed conversion ratio (p < 0.05), while feed consumption was unaffected (p > 0.05). Regarding biomarkers on day 60, the G400 dose effectively modulated BMAL1, MOTS-c, and BMCP1 (peak at 19:00). The G600 dose yielded the best results for Apelin (peak at 19:00) and cTnI (peaks at 13:00 and 07:00). Conclusions: In conclusion, GOE at a dose of 400 mg/kg (G400) not only optimizes fattening performance in Anatolian Merino lambs but also supports metabolic homeostasis by modulating adipokine levels, cardiac function, and mitochondrial biogenesis processes in a manner consistent with the circadian rhythm. These findings demonstrate that the G400 dose is a safe and effective phytogenic strategy for improving animal health and production efficiency.
- MakaleAçık Erişim2025Scopus SJRQ3Effect of Graviola Oil Extract on Anti-obesity Effect and Adipokine (Apelin and Adiponectin) Response in High Fat Diet-induced Obese Rats
Erkılıç, T. Orkun; Bayraktar, B.
Background: This study aims to investigate the anti-obesity effect of GOE with adipokine (apelin and adiponectin) response at different doses (100 and 200 mg/kg) of GOE in normal healthy and obese rats with High-fat diet (HF). Methods: In this study, 36 adult male Wistar albino rats, aged between 8-10 weeks, were used. 6 groups were created, with 6 rats in each group: Control (C), Rat group without GOE and HF application, G100 (GOE 100 mg/kg group given with oral gavage route of administration (OGRA), G200 (GOE 200 mg/kg group given with OGRA), HFC (HF control group): no HF and no GOE group), HF100 (rats receiving HF were 100 mg/kg graviola oil extract added to their diet), HF200 (rats receiving HF were 200 mg/kg graviola oil extract added to their diet). Blood samples were taken from the tail vein (vena caudalis) of all on days 0 and 60 of the study. Apelin and adiponectin levels in the serum samples were measured by ELISA method. Result: In the present study, a significant increase (p<0.01) was observed in the mean serum apelin level in the HF groups at the end of the 60 day after HF induction, while a significant decrease (p<0.01) was also detected in the adiponectin level. On the other hand, when examined in terms of BW, the most significant decrease due to GOE addition in the HF groups, i.e. the anti-obesity effect, was determined in the HFG200 mg/kg group (p<0.01). As a result, it was concluded that GOE may be safe and beneficial when administered at a dose of 200 mg/kg in obesity-induced rats.
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