Effects of dietary zearalenone on the serum biochemistry, hepatic and intestinal histology, and intestinal microbiota of juvenile Dabry′s sturgeon ( Acipenser dabryanus )

2021 ◽  
Author(s):  
Jinping Wu ◽  
Hao Du ◽  
Jinming Wu ◽  
Jiang Luo ◽  
Peng Fu ◽  
...  
Keyword(s):  
Intestinal Microbiota ◽  
Serum Biochemistry ◽  
Intestinal Histology

scholarly journals Production Performance, Nutrient Digestibility, Serum Biochemistry, Fillet Composition, Intestinal Microbiota and Environmental Impacts of European Perch (Perca Fluviatilis) Fed Defatted Mealworm (Tenebrio Molitor)

2021 ◽  
Author(s):  
Hung Quang Tran ◽  
Markéta Prokešová ◽  
Mahyar Zare ◽  
Jan Matoušek ◽  
Ilario Ferrocino ◽  
...  
Keyword(s):  
Environmental Impacts ◽  
Intestinal Microbiota ◽  
Perca Fluviatilis ◽  
Serum Biochemistry ◽  
Nutrient Digestibility ◽  
Production Performance ◽  
European Perch ◽  
Fishmeal Replacement ◽  
Fish Diets ◽  
Solid Nitrogen

Abstract Background: Yellow mealworm (Tenebrio molitor) larvae meal (TM), one of seven approved insect species used in aquafeeds, is a frequently investigated candidate for fish diets. Results: This study aimed to investigate the effects of dietary defatted TM on production performance, serum biochemistry, nutrient digestibility, fillet traits, intestinal microbiota, and environmental impacts of perch (Perca fluviatilis). Four experimental diets, characterized by defatted TM inclusion levels of 0, 6.8, 13.5 and 20.3%, respectively, or 0, 25, 50, and 75% at the expense of fishmeal (TM0, TM25, TM50, and TM75, respectively) were fed to juvenile perch (bodyweight 20.81 ± 3.36 g, total length 117.7 ± 7.2 mm) (quadruplicated per diet) for 105 days. Inclusion levels of 6.8% or 25% fishmeal replacement by defatted TM did not show a significant effect on specific growth rate and feed conversion ratio (P > 0.05), while further levels of 13.5 and 20.3%, or 50 and 75% fishmeal replacement with defatted TM, respectively, displayed a significant delay in these indices compared to the control diet (P < 0.001). The aspartate aminotransferase activities in perch’s serum increased with increasing dietary TM (P = 0.044). Nutrient digestibility of perch exhibited TM-dose dependent (P < 0.05). Dietary defatted TM did not lead to any significant changes in the fillet composition of perch (P > 0.05). Defatted TM did not modify diversity of fish gut microbiota (Chao1 index, P = 0.742; Shannon index, P = 0.557; and observed species, P = 0.522), but significantly reduced abundance of Lactobacillus (P = 0.018) and Streptococcus (P = 0.013) while fed TM75 relative to TM0. TM-containing diets generated a comparable amount of total solid waste and solid phosphorus waste with TM0, except TM25, whereas solid nitrogen waste significantly increased with elevated TM levels (P < 0.001). Perch fed TM25 was comparable with TM0 for global warming potential, acidification, and land use (P > 0.05), whereas TM50 and TM75 exerted heavier burdens on energy use, eutrophication, and water use than TM0 (P < 0.001). Fishmeal replacement by TM significantly reduced economic fish-in fish-out (P < 0.001).Conclusion: The inclusion of 6.8% or 25% fishmeal replacement by defatted insect meal (T. molitor) in European perch diets resulted in comparable production performance but entailed heavier burdens associated with solid outputs waste and environmental impacts. The present study underlined the major bottleneck of a substantial inclusion of defatted insect meal (T. molitor) in fish diets associated with solid nitrogen waste and environmental consequences associated with one unit of farmed perch produced. Our multidisciplinary study suggested important aspects while formulating diets for fish, using insect meals regarding production performance and environmental issues.

scholarly journals Resveratrol Butyrate Esters Inhibit Obesity Caused by Perinatal Exposure to Bisphenol A in Female Offspring Rats

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 4010
Author(s):  
Ming-Kuei Shih ◽  
You-Lin Tain ◽  
Yu-Wei Chen ◽  
Wei-Hsuan Hsu ◽  
Yao-Tsung Yeh ◽  
...  
Keyword(s):  
Weight Gain ◽  
Bisphenol A ◽  
Intestinal Microbiota ◽  
Lipid Accumulation ◽  
Blood Lipids ◽  
Serum Biochemistry ◽  
Female Offspring ◽  
Perinatal Exposure ◽  
Fat Deposits ◽  
Potential Applications

Resveratrol butyrate esters (RBE) are derivatives of resveratrol (RSV) and butyric acid and exhibit biological activity similar to that of RSV but with higher bioavailability. The aim of this study was designed as an animal experiment to explore the effects of RBE on the serum biochemistry, and fat deposits in the offspring rats exposed to bisphenol A (BPA), along with the growth and decline of gut microbiota. We constructed an animal model of perinatal Bisphenol A (BPA) exposure to observe the effects of RBE supplementation on obesity, blood lipids, and intestinal microbiota in female offspring rats. Perinatal exposure to BPA led to weight gain, lipid accumulation, high levels of blood lipids, and deterioration of intestinal microbiota in female offspring rats. RBE supplementation reduced the weight gain and lipid accumulation caused by BPA, optimised the levels of blood lipids, significantly reduced the Firmicutes/Bacteroidetes (F/B) ratio, and increased and decreased the abundance of S24-7 and Lactobacillus, respectively. The analysis of faecal short-chain fatty acid (SCFA) levels revealed that BPA exposure increased the faecal concentration of acetate, which could be reduced via RBE supplementation. However, the faecal concentrations of propionate and butyrate were not only significantly lower than that of acetate, but also did not significantly change in response to BPA exposure or RBE supplementation. Hence, RBE can suppress BPA-induced obesity in female offspring rats, and it demonstrates excellent modulatory activity on intestinal microbiota, with potential applications in perinatological research.

Features of large intestinal microbiota of patients with hypothyroidism

2020 ◽  
Author(s):  
Antonina Piddubna ◽  
Nataliia Pashkovska ◽  
Galina Koval ◽  
Ivan Pankiv ◽  
Yulia Marchuk ◽  
...  
Keyword(s):  
Intestinal Microbiota
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