Effect of Aspergillus japonicas culture filtrate on performance, carcase yield, digestive enzymes, intestinal microbiota and blood constituents of quail

Abstract

This study was carried out to examine the beneficial role of organic acids and other beneficial compounds produced by Aspergillus japonicas and their effects on performance, carcase yield, digestive enzymes, intestinal microbiota and blood constituents of quail. 240 quails (7 days old) were allotted to 5 groups consisting of 48 quail chicks (4 replicates of 12 chicks). The first, second, third, fourth and fifth groups were fed basal diet with 0 (control), 1, 2, 3, and 4 mL A. japonicas culture filtrate/kg diet, respectively. The addition of A. japonicas culture filtrate up to 3 mL/kg feed increased body weight at 3 and 5 weeks-old and body weight gain from 1-3, 3-5 and 1-5 weeks, the best level was 3 mL/kg feed. Quails fed A. japonicas filtrate diets recorded the best feed conversion ratio in comparison with the control. Dietary addition of A. japonicas filtrate tended to decline triglyceride, LDL, and VLDL and increased HDL values in the plasma. Use of A. japonicas filtrate in diets up to 2 mL/kg improved the immune indices. The levels of SOD and TAC, GSH and CAT as well as digestive enzymes were improved due to A. japonicas filtrate supplementation compared to control. Plasma levels of MDA were decreased (p ¼ .0001) in the quails fed Aspergillus filtrate (1 or 2 mL/kg). Quails fed rations enriched with filtrate exhibited lower colonisation of Escherichia coli, coliform and Salmonella. In conclusion, supplemental A. japonicas culture filtrate could improve the performance, digestive enzymes, immunity, antioxidant indices and mitigate intestinal pathogens. HIGHLIGHTSUse of Aspergillus filtrate improved in quail diets performance and digestive enzymes. Use of Aspergillus filtrate in quail diets improved immunity and antioxidant indices. Dietary addition of Aspergillus filtrate mitigated intestinal pathogens.

Dietary citric acid enhances growth performance, nutrient digestibility, intestinal microbiota, antioxidant status, and immunity of Japanese quails

“…Birds fed 10 to 20 g/kg CA recorded higher digestive enzyme activities (amylase and lipase). FCR improvement may be attributed to organic acids, because the acidic anions promote the absorption of minerals like Ca, P, Mg, and Zn ( Abdel-Latif et al, 2020 ; Pearlin et al, 2020 ). Diets enriched with organic acidifiers induced significant improvements in nutrient absorption by increasing the intestinal villus height in chickens ( Xia et al, 2004 ).…”

Use of fumaric acid as a feed additive in quail's nutrition: its effect on growth rate, carcass, nutrient digestibility, digestive enzymes, blood metabolites, and intestinal microbiota

“…Aside from lipase enzyme, birds fed 5 and 15 g/kg FUA had greater amylase activity. Organic acids supplementation may be responsible for the increase in FCR since acidic anions aid mineral absorption ( Abdel-Latif et al, 2020 ; Alagawany et al, 2020 ; Pearlin et al, 2020 ). Broilers fed organic acid diets improved nutrient absorption by increasing the height of villus in the intestine ( Xia et al, 2004 ).…”

The effect of Citric Acid in the Diets of Native Chicken on Growth Performance and Carcass Traits

“…The beneficial effects of citric acid also affect gut's size, gut's morphometry, thus improve nutrient digesting [21]. Organic acids, which enhance the minerals' absorption, including Ca, P, Mg, and Zn, may be responsible for the improved FCR [22,23]. Besides, these such minerals might play a crucial role in enzyme activities.…”