Aquaculture Association of Canada’s Post

A recently published study found that sows on a commercial farm fed a lactation diet supplemented with a phytogenic product had increased milk production and improved piglet performance during the lactation period. There was a reduction in the proportion of light piglets at weaning from sows fed the phytogenic product. These effects were 'on top' of other additives (i.e. Bacillus and yeast probiotics, 25-OHD3) in the diet, although it appears the diets did not contain phytase. It would be interesting to also evaluate subsequent reproductive performance and longevity in phytogenic fed sows in studies with larger sample size. #essentialoils #phytogenics #animalnutrition https://lnkd.in/gzrJGiqw

As an outcome of a collaborative research with PGIVAS, Akola, our team at VNIT is happy to share our recent publication in the journal "Biomass Conversion and Biorefinery". The article talks about the effect of incorporation of potato peel dietary fibre (PPDF) as prebiotic supplement in poultry diet. Our research team at VNIT contributed the following: 1. Confirmation of the synbiotic ability of PPDF prior to its inclusion in poultry diet, validating the synergistic effect of PPDF alongside the gut microbiota. 2. Detailed chemical/compositional characterization of PPDF, namely total sugar (FOS, GOS, MOS, XOS), total fibre (soluble and insoluble), total VFA, total polyphenol content, proximate analysis and lignocellulosic composition. In vivo trials were carried out at PGIVAS, Akola, spanning across 7 weeks. Several parameters relevant to poultry characteristics were studied, including nutrient metabolisability, blood metabolite concentration, blood biochemical parameters, gut health, immune response etc. I'd like to sincerely thank Prof. Sachin Mandavgane, Ph.D, Dr. Kuldeep Deshpande, Dr. Ipsita Chakravarty for their constant guidance and support. Looking forward to working further on the subject. #research #collaboration #poultry #prebiotic #microbiology #animalnutrition #synbiotic #potatopeel #vnit #merinoinnovationcenter #dst #biorefinery

Dietary fibre (DF) is important for health but many individuals experience GI symptoms. Happy to share this publication in which we show that symptoms in response to a high-dose DF supplement (arabinoxylan) revert almost completely back to baseline after 4 to 6 weeks of consumption. Symptoms severity and temporal dynamics varied among individuals and were linked to gut microbiota composition (e.g. Bifidobacterium longum), fecal acidification, and baseline diet. The findings indicate that humans can adapt to high doses of DF within a relatively short time, and suggest that specific members of the gut microbiome contribute to this process. This forms a basis for the development of personalized microbiome-targeted or dietary strategies aimed to increase fiber consumption by alleviating fibre-induced symptoms. With a big Thank You to Edward Deehan, PhD, RDN for his vision and leadership, all the talented former students, postdocs, and coordinators that contributed to the work, and to world-class collaborators David Berry and Carla Prado, PhD, RD.

Delighted to start 2024 with publication of our recent paper “Effects of quercetin and hydroxytyrosol supplementation in a high-fat diet on growth, lipid metabolism, and mitochondrial function in spotted seabass (Lateolabrax maculatus)” in Aquaculture Journal. Our results revealed the deterioration of growth, feed intake and feed utilization in high-fat diet (HFD) group compared to the normal-fat diet (NFD) group whereas QUE and HT application improved their values. The results of oil red O staining exhibited a remarkable reduction in number of lipid droplets in the liver of fish from HFD + QUE + HT group compared to the HFD group. Expression of lipid metabolism related genes (srebp-1c, fas, acc) were down-regulated by QUE and HT treatment. Co-supplementation of QUE and HT down-regulated the expression of ERS-related genes (grp78, chop, perk, atf6, ire1), improved ER ultrastructure, and enhanced the coupling between mitochondria and ER. Moreover, expression of genes associated with hepatic mitochondrial biogenesis (pgc1-α, pgc1-β, nrf1) and mitophagy (pink1, atg5, mul1) was up-regulated in HFD + QUE, HFD + HT and HFD + QUE + HT groups. 

🐖During the weaning phase, piglets face significant challenges, as it represents one of the most delicate phases of their production cycle. The success of this phase can be compromised by several factors, one of the most frequent is the contamination of raw materials and feed with #mycotoxins. 🌾 Diets contaminated with mycotoxins, such as aflatoxin B1 and fumonisins, result in decreased production parameters and altered immune systems. 📊 To test the efficacy of BIŌNTE® QUIMITŌX® PLUS on animal performance and antioxidant status in weaned pigs exposed to aflatoxin B1 and fumonisins (FB1+FB2), a study was conducted in collaboration with the University of Thessaly (Greece). ✅ The results demonstrated the efficacy of BIŌNTE® QUIMITŌX® PLUS in mitigating the effects of mycotoxins, improving productive parameters and alleviating oxidative stress in weaned #piglets. ⬇ Follow this link to read the complete article: #BIŌNTE #animalnutrition #mycotoxins #pigproduction

Dietary supplementation with bacteria-produced selenium nanoparticles enhances broiler performance, intestinal architecture, mucosal protection, and beneficial gut microorganisms. More here: https://lnkd.in/eNYwrD5q

By God’s grace, I am delighted to announce our latest publication: 'Symbiotic Can Replace Zinc Bacitracin in Diets for Layer-Type Chicks.' Our study reveals that a symbiotic supplement can effectively substitute antibiotic growth promoter zinc bacitracin in layer-type chick diets from 1 to 35 days old. The inclusion of 0.1% symbiotic significantly improved feed conversion ratios while impacted blood serum biochemistry and reducing liver and Fabricius bursa weights. These findings emphasize the symbiotic's potential to maintain chick performance and health, offering a sustainable alternative to antibiotics for growth promotion and stress management in young layer chicks. Our research gives significant insights and practical application solutions for poultry farmers dealing with increased antibiotic restrictions. https://lnkd.in/d74hiGdC

My PhD Culminates! Yarrowia lipolytica Boosts Rainbow Trout Immunity. This post marks the last publication of my PhD work in Aquaculture journal. We investigated the potential of Yarrowia lipolytica yeast (isolated from sewage of wastewater treatment plant in Sweden) as a dietary supplement to enhance gut health and immunity in rainbow trout (Oncorhynchus mykiss). This project used fish as an animal model to explore the benefits of Yarrowia lipolytica for #aquaculture. #fishasanimalmodel #fishhealth #yarrowialipolytica #preventivenutrition #functionalfeed #circularbioeconomy #nextgenerationfeed Our study revealed exciting results! Supplementation of non autolysed Yarrowia lipolytica at 5% inclusion showed promise as an immunostimulant, increasing the expression of key immune genes in the trout intestine. While the overall gut microbial composition wasn't significantly altered. #gutmicrobiota #immunology This research paves the way for Yarrowia lipolytica as a potential functional feed additive. It could promote gut health and potentially improve disease resistance in rainbow trout, ultimately contributing to sustainable aquaculture practices. I am grateful to my supervisors Torbjörn Lundh, Johan Dicksved, Anna Schnürer and Aleksandar Vidakovic and co-authors for their continuous support. Feel free to reach me out if you have any questions about the findings! Link : https://lnkd.in/g7D-i66v  

Join us for an enlightening session of Phibro Expert Talk with Dr. Vasil Stanev on Probiotics, where we will delve into the topic of how probiotics work. Lesson four: Stimulation of other beneficial microflora via cross-feeding or quorum sensing. When it comes to applying probiotics in poultry, many ask: Is there an ideal strain or microflora pattern? Unfortunately, the answer is NO. Microflora populations vary across different segments of the GIT and change as birds grow, especially in their first weeks. Dietary and environmental factors play a significant role, influencing microflora diversity. What matters most is probiotic diversity. We need strains that produce different metabolites and thrive under various conditions. And while added microbial cells are minimal compared to resident microflora, higher doses yield better results. Early use of probiotics in diets proves most effective, especially during stress periods like diet changes or pathogen exposure. It's all about restoring normal structure and function. In the intricate world of poultry probiotics, it's not just about strains—it's about synergy, adaptation, and timing.  Learning more from the video by Dr. Vasil Stanev. #teamphibro #MicroLife/Provia

Reshaping of Gut Microbiota in Gilthead Sea Bream Fed Microbial and Processed Animal Proteins as the Main Dietary Protein Source The present study aimed to unravel the effects of partial (50%; 50LSAqua) and total (100%; 100LSAqua) replacement of #fishmeal (FM) by a commercial protein source (LSAqua SusPro) made of #bacterial and processed #animalproteins (#PAP) in farmed juveniles of gilthead sea bream (Sparus aurata). The trial lasted 8 weeks, and the feasibility of replacement was assessed in terms of growth performance, histopathological scoring and composition of mucosal adherent microbiota from anterior intestine (AI). Specific growth rates (SGR) of 50LSAqua fish were undistinguishable from the CTRL group, whereas a slight but significant growth impairment was found with the total replacement. Histological signs of inflammation across the intestine were more evident at the highest level of FM replacement, and the total concentration of short-chain fatty acids (SCFA) in stripped feces decreased in a dose-dependent manner. Illumina sequencing of gut mucosal microbiota yielded a mean of 130,439 reads per sample assigned to 1,567 OTUs at a 97% identity threshold. The bacterial richness was similar in all groups, but a significantly higher Simpson diversity index was found in 100LSAqua fish. At the phylum level, Proteobacteria were the most abundant in all groups, whereas Firmicutes decreased and Actinobacteria increased with the FM replacement. At a closer look, pro-inflammatory Gammaproteobacteria of the genus Psychrobacter, and Acinetobacter decreased with FM replacement, whereas the anti-inflammatory Paracoccus, Arthrobacter, and Actinomycetales increased, with a remarkable presence of the Propioniciclava genus in LSAqua groups. The inferred metagenome analysis suggested that these discriminant bacteria could be implicated in a counter-regulatory anti-inflammatory response. It also pointed to an over-representation of mucosal microbes that can potentially be involved in the natural production of antimicrobials in fish fed the experimental diets. https://lnkd.in/dRWVY5GD #aquaculture #seabream #gutmicrobiota #microbiota