141 research outputs found
The effect of feeding a novel multistrain yeast fraction on European seabass (Dicentrachus labrax) intestinal health and growth performance
© Copyright by the World Aquaculture Society 2019 Fish were fed a single-strain yeast fraction (SsYF; 2 g/kg) or a multistrain yeast fraction (MsYF; 0.8 g/kg) for 10 weeks. The results demonstrated significant (p ≤ 0.03) elevations in weight gain, specific growth rate, protein efficiency ratio, and feed conversion ratio in fish fed the yeast fraction-supplemented diets. In the distal intestine, a significant elevation in microvilli density was observed after 5 and 10 weeks of dietary supplementation with MsYF and SsYF, respectively, compared to control fed fish (p < 0.001). A significant elevation (p = 0.02) in the perimeter ratio was observed in fish fed diets supplemented with the yeast fractions. After 10 weeks of feeding on the experimental diets, Rt-qPCR demonstrated a significant downregulation (p < 0.05) in the stress response genes, heat-shock protein 70 (hsp70) and proliferating cell nuclear antigen (pcna), in fish fed diets supplemented with the yeast fractions. Significant (p < 0.05) elevations in interleukin 1-beta (il1β) and interleukin-10 (il10) gene expression were observed in fish fed diets supplemented with the MsYF compared to the other dietary groups. These findings suggest that feeding an MsYF specifically at a lower incorporation rate < 1 g/kg, compared to a commercial SsYF at 2 g/kg, is effective in improving the intestinal health status and growth performance of European seabass
The use of citrus pulp silage in Diplodus puntazzo nutrition
[EN] Purpose Studying the efect of citrus pulp silage in the growth performance, amino acid retention of sharpsnout sea bream
juveniles.
Methods Citrus pulp is an energy and protein source that has been used to replace wheat meal in Diplodus puntazzo fngerlings; 96 fsh of 21.5±0.67 g were nourished with two experimental diets for 105 days. The control diet (CON) contained
421.6 g/kg of protein and 22.6 MJ/kg of energy. The citrus pulp diet (CPD) included 442.7 g/kg of protein and 22.02 MJ/
kg of energy.
Results At the end of this trial, the CPD did not afect the growth parameters, but the feed efciency values exhibited statistically signifcant diferences, with those fsh fed the CPD having higher values, possibly due to the presence of limonene in
the diet. The CPD also resulted in a reduction in amino acid (AA) content due to the protein being bound to fbre; this consequence did not afect the fnal fsh AA profle. For AA retention, only arginine displayed signifcant diferences, although
the rest of the AAs also showed efects of AA reduction from the CPD.
Conclusion Citrus pulp silage can be used in D. puntazzo feeding, without adverse in the growth performance and the amino
acid profle, although it did cause a reduction in feed efciencyNogales Mérida, S.; Tomas-Vidal, A.; Jover Cerda, M.; Sánchez Lozano, NB.; Velazco Vargas, JL.; Martínez-Llorens, S. (2018). The use of citrus pulp silage in Diplodus puntazzo nutrition. International Journal Of Recycling of Organic Waste in Agriculture (Online). 2018:1-8. https://doi.org/10.1007/s40093-018-0235-5S182018Alnaimy A, Gad AE, Mustafa MM, Atta MAA, Basuony HAM (2017) Using of citrus by-products in farm animals feeding. J Sci 1(3):58–67. https://doi.org/10.15406/oajs.2017.01.00014Amorim AB, Thomaz MC, Ruiz US, Pascoal LAF, Watanabe PH, Martinez JF, Daniel E, Martins MIEG, Masson GCIH (2011) Economic evaluation of the use of different levels of citrus pulp with or without the addition of enzyme complex in the diets of pigs. 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Effects of Electron-Beam Radiation on Nutritional Parameters of Portuguese Chestnuts (Castanea sativa Mill.)
Proximate, Antinutritional, Microbial, and Sensory Acceptability of Bread Formulated from Wheat (Triticum aestivum) and Amaranth (Amaranthus caudatus)
Replacement of a Natural Diet by a Prepared Dry Feed for Successful Maturation and Spawning of Female Litopenaeus vannamei (Boone) Broodstock
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