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Janine Donaldson,Michael Taurai Madziva,Kennedy Honey Erlwanger 아세아·태평양축산학회 2017 Animal Bioscience Vol.30 No.5
Objective: The current study aimed to investigate the impact of high-fat diets composed of different animal and vegetable fat sources on serum metabolic health markers in Japanese quail, as well as the overall lipid content and fatty acid profiles of the edible bird tissues following significantly increased dietary lipid supplementation. Methods: Fifty seven male quail were divided into six groups and fed either a standard diet or a diet enriched with one of five different fats (22% coconut oil, lard, palm oil, soybean oil, or sunflower oil) for 12 weeks. The birds were subjected to an oral glucose tolerance test following the feeding period, after which they were euthanized and blood, liver, breast, and thigh muscle samples collected. Total fat content and fatty acid profiles of the tissue samples, as well as serum uric acid, triglyceride, cholesterol, total protein, albumin, aspartate transaminase, and total bilirubin concentrations were assessed. Results: High-fat diet feeding had no significant effects on the glucose tolerance of the birds. Dietary fatty acid profiles of the added fats were reflected in the lipid profiles of both the liver and breast and thigh muscle tissues, indicating successful transfer of dietary fatty acids to the edible bird tissues. The significantly increased level of lipid inclusion in the diets of the quail used in the present study was unsuccessful in increasing the overall lipid content of the edible bird tissues. Serum metabolic health markers in birds on the high-fat diets were not significantly different from those observed in birds on the standard diet. Conclusion: Thus, despite the various high-fat diets modifying the fatty acid profile of the birds’ tissues, unlike in most mammals, the birds maintained a normal health status following consumption of the various high-fat diets.
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Nasiru Muhammad,Busisani Wiseman Lembede,Kennedy Honey Erlwanger 한국식품영양과학회 2021 Journal of medicinal food Vol.24 No.9
Consumption of high-fructose diets early in life increases the risk of developing metabolic disorders, including nonalcoholic fatty liver disease (NAFLD). Zingerone, an alkaloid isolated from Zingiber officinale, has been demonstrated to reverse obesity and fatty liver in adult male rats. We investigated the potential preventive effects of neonatally administered zingerone on the development of fructose-induced NAFLD in male and female rats. Four-day-old male (n = 35) and female (n = 44) rat pups were randomized and gavaged with: 10 mL/kg body weight (bwt) of distilled water (C), 10 mL/kg bwt of 20% fructose solution (Fr), 10 mL/kg bwt of 20% fructose solution +40 mg/kg bwt of zingerone (ZFr), and 40 mg/kg bwt of zingerone (Z) daily for 14 days. After weaning, all groups continued on unlimited standard rat feed; however, groups C and Z had plain drinking water, whereas groups Fr and ZFr had unlimited 20% fructose solution to drink for 10 weeks. Rats on the high-fructose diet (Fr) compared with the negative controls (C) had significantly increased hepatic lipid content (in %, males: P = .0002; females: P < .0001, analysis of variance [ANOVA]) and hepatic steatosis score (in %, males: P = .0018; females: P < .0022, Kruskal–Wallis ANOVA). Zingerone prevented (P < .05) the fructose-induced increase in hepatic steatosis in both sexes. The plasma alanine aminotransferase activity, levels of uric acid, TBARS (thiobarbituric acid reactive substances), IL-6 (interleukin-6), and TNF-α (tumor necrosis factor alpha) were not different (P > .05, ANOVA) across the different treatment groups in both sexes. No difference (P > .05, ANOVA) was observed between the two sexes for treatment, sex and interaction effects with regard to hepatic lipid content, and measured blood parameters. The use of zingerone neonatally should be further investigated as a strategic prophylactic intervention for the prevention of long-term high-fructose diet-induced NAFLD.
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