Assessing the influence of the inclusion of Bacillus subtilis AQUA‐GROW ^® as feed additive on the growth performance, feed utilization, immunological responses and body composition of the Pacific white shrimp, Litopenaeus vannamei

Abstract

This study was carried out to determine the influence of four concentrations of dietary Bacillus subtilis on the growth performance, nutrient utilization, immunity and antioxidants activities, mortality rate and chemical composition of Litopenaeus vannamei.Three hundred and sixty L. vannamei (4.00 g ± 0.03) were raised in 12 hapas (1 m 3 each, placed in 4 ponds) equally distributed on apparently 38.5% protein and 10.5% lipid containing three concentrations (0.5, 1.0 and 1.5) g/kg of dietary B. subtilis and a non-supplemented control in triplicates. After 56 days of feeding trial, the growth performance, feed utilization, survival rate and immune parameters were significantly (p < 0.05) better in shrimp fed with dietary B.subtilis compared to the control. The higher dose of dietary B.subtilis showed the good performance of the parameters studied, but in some instances (specific growth rate, feed conversion rate, lysosomal enzyme activity, phenoloxidase activity etc.) were not significant (p < 0.05) difference.This study indicates that dietary B. subtilis based diets have a more positive influence on the growth performance, feed utilization, survival rate and immune response of L. vannamei fingerlings.

Pikeperch (Sander lucioperca) larval rearing optimization: utilization of lactic acid bacteria for improving microbiome diversity and digestive enzyme activity

“…Still, it may also have positively modulated the rearing water quality inherent to the multifaceted mode of action and benefits of probiotics. Although some studies have documented an effect of LABs supplementation on water biochemistry (Eissa et al, 2022), no statistical differences in ammonia, nitrate, or nitrite levels were observed between the treatments in this study.…”

Impacts of Dietary Selenium Nanoparticles from Spirulina platensis on Growth Performance, Physio-Biochemical Components and Alleviating Effect against Cadmium Toxicity in Pacific White Shrimp Litopenaeus vannamei

“…The aquaculture sector has been identified as one of the main sources for the animal proteins needed for human consumption [1]. In the 1980s, shrimp farming experienced significant growth and is a billion dollar sector today [2].…”

“…Symbol1 -vitamin premix (per kg of premix): 2.5 g thiamine; 2.5 g riboflavin; 2.0 g pyridoxine; 100. g inositol; 0.3 g biotin; 100.0 g pantothenic acid; 0.75 g folic acid; 2.5 g para-aminobenzoic acid; 200.0 g choline; 10.0 g nicotinic acid; 0.005 g cyanocobalamine; 20.1 g a-tocopherol acetate; 2.0 g menadi one; 100,000 IU retinol palmitate; 500,000 IU cholecalciferol. Symbol 2 -mineral premix (g/kg of pre mix): CaHPO4.2H2O: 727.2; MgCO4.7H2O: 127.5; KCl: 50.0; NaCl: 60.0; FeC6H5O7.3H2O: 25.0; ZnCO3 5.5; MnCl2.4H2O: 2.5; Cu (OAc) 2.H2O: 0.785; CoCl3.6H2O: 0.477; CaIO3.6H2O: 0.295; CrCl3.6H2O 0.128; AlCl3.6H2O: 0.54; Na2SeO3: 0.03.…”

A Global Analysis of Climate Change and the Impacts on Oyster Diseases

“…One of the challenges encountered through alteration to the aquatic environment is the impact on aquatic animal diseases, which also expands in range in freshwater and marine waters [21][22][23]. Over the years, studies have indicated that climate change can increase pathogen development and consequently influence disease spread, host susceptibility, and survival.…”