Effect of Various Feed Additives on Immune Response of Turkeys Vaccinated with Live Pasteurella multocida in Drinking Water

1980 ◽  
Vol 24 (2) ◽  
pp. 481
Author(s):  
William T. Derieux
Keyword(s):  
Immune Response ◽  
Drinking Water ◽  
Pasteurella Multocida ◽  
Feed Additives

scholarly journals Effect of colistin and tylosin used as feed additives on the performance, diarrhea incidence, and immune response of nursery pigs

2016 ◽  
Vol 37 (4) ◽  
pp. 1947 ◽  
Author(s):  
Kelly Mazutti ◽  
Leandro Batista Costa ◽  
Lígia Valéria Nascimento ◽  
Tobias Fernandes Filho ◽  
Breno Castello Branco Beirão ◽  
...  
Keyword(s):  
Immune Response ◽  
Feed Intake ◽  
Immune Cell ◽  
Average Daily Gain ◽  
Experimental Period ◽  
Feed Additives ◽  
Control Group ◽  
Feed Conversion ◽  
Nursery Pigs ◽  
Diarrhea Incidence

For the last several decades, antimicrobial compounds have been used as feed additives to promote piglet growth at weaning, through the prevention of subclinical and clinical disease. However, few studies have assessed the influence of these antibiotics on the immune response of nursery pigs, as well as the relation between performance, health, and immunity of animals that receive feed additives. Therefore, the present study aimed to evaluate the effects of colistin and tylosin when used as feed additives on the performance, incidence of diarrhea, and immune response of nursery pigs. In this study, 72 weaned pigs (average age, 28 days) were allotted into one of three treatment groups: a control group (feed with no antibiotics), tylosin group (feed containing 22 ppm tylosin), and colistin group (feed containing 20 ppm colistin). Weekly, during a five week period, the average daily feed intake, average daily gain, and feed conversion ratio of the pigs were evaluated. Stools were scored daily, in accordance with a fecal texture scale. Blood samples were collected on the day of housing (d0) and on d7, d21, d28, and d35 for immune cell phenotyping. The results of this study showed that piglets in both the colistin and tylosin groups exhibited a significantly higher average daily feed intake, resulting in a higher body weight at the end of the experimental period (d35) when compared with piglets from the control group. Colistin and tylosin also significantly reduced the incidence of diarrhea. Colistin and tylosin modulated the piglets’ immune responses, particularly on d28, by changing the percentage of circulating B lymphocytes, CD4+CD8+ T cells, and the CD4:CD8 ratio.

scholarly journals 398 Towards new feeding approaches for optimizing nutritional status, immunity and host-microbiota interactions in neonatal and weaned piglets

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 181-181
Author(s):  
Martin Lessard ◽  
Mylène Blais ◽  
Guylaine Talbot ◽  
J Jacques Matte ◽  
Ann Letellier ◽  
...  
Keyword(s):  
Immune Response ◽  
Immune System ◽  
Intestinal Microbiota ◽  
System Development ◽  
Feed Additives ◽  
Epithelial Cell Line ◽  
Host Immune System ◽  
Gut Health ◽  
Weaned Piglets ◽  
Immune System Development

Abstract Lactation, feeding conditions, microbial interventions and piglet growth in the first few weeks of life have important impact on the intestinal microbiota establishment and immune system development of piglets. Indeed, colostrum and milk contain various bioactive components such as immune factors, antimicrobial peptides and oligosaccharides that contribute to maintain intestinal homeostasis and regulate interactions between microbiota and host immune system. Recent results revealed that low birth weight piglet (LBWP) with poor weight gain during the first two weeks of life develop different intestinal microbiota and immune response profiles compared to high BWP (HBWP) littermates. Consequently, piglets within litters may have different resilience to infections after weaning and benefit from feed additives in a specific manner. A study has been performed to evaluate the potential of bovine colostrum extract (BC) as replacement to plasma proteins for improving gut health and resilience to Salmonella infection in piglets. Results revealed that in weaned piglets fed BC, intestinal microbiota was differently modulated and bacterial dysbiosis induced by Salmonella was restored faster. Moreover, expression of genes involved in innate immunity such as β-defensin-2 and glutathione peroxidase-2 was respectively down- and up-regulated in BC fed piglets. A combination of dietary supplementation with BC, cupper and vitamins A and D has also been tested in LBWP and HBWP, and there is clear evidence that BC in combination with other feed additives promote growth and gut health in both LBWP and HBWP. The porcine intestinal epithelial cell line IPEC-J2 was used to better understand the functional properties of BC. Results indicated that BC improves wound healing, enhances barrier function and modulates the expression of several genes involved in innate immune response. Finally, as microbial intervention, the potential of fecal transplantation to modulate intestinal microbiota and immune system development of piglets is under investigation and will be discussed.

scholarly journals The influence of different feed additives to performances and immune response in broiler chicken

2007 ◽  
Vol 57 (2-3) ◽  
pp. 217-229 ◽  
Author(s):  
Tokic Vesna ◽  
Lazarevic Miodrag ◽  
Sinovec Z. ◽  
Tokic A.
Keyword(s):  
Immune Response ◽  
Broiler Chicken ◽  
Feed Additives

scholarly journals Isolation and Identification of Pasteurella multocida from Chicken for the Preparation of Oil Adjuvanted Vaccine

2013 ◽  
Vol 2 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Samina Ievy ◽  
Mohammad Ferdousur Rahman Khan ◽  
Md Ariful Islam ◽  
Md Bahanur Rahman
Keyword(s):  
Immune Response ◽  
Pasteurella Multocida ◽  
Challenge Infection ◽  
Cholera Vaccine ◽  
Isolation And Identification ◽  
Passive Hemagglutination ◽  
Fowl Cholera ◽  
Adjuvanted Vaccine ◽  
Group A ◽  
The Mean

The research work was performed for the isolation and identification of Pasteurella multocida from field cases, preparation of oil adjuvanted vaccine from isolated strain and determination of its efficacy. Samples were collected from suspected dead birds of three poultry farms of Bangladesh (Code name: M and R). The P. multocida isolates were Gram negative, non-motile, non- spore forming rod occurring singly or pairs and occasionally as chains or filaments. Biochemically P. multocida ferment basic sugar and consistently produced acid except from maltose and lactose. After isolation formalin killed oil adjuvanted Fowl cholera vaccine was prepared in Laboratory of the Department of Microbiology and Hygiene, BAU and this experimental vaccine (3.2x108 CFU/ml) was administered in nine weeks old White Leg Horn chickens at the different dose rate through intramuscular (IM) route in each selected group A (1ml alum precipitated vaccine), B (0.5ml alum precipitated vaccine), C (1ml oil adjuvanted vaccine) and D (0.5ml oil adjuvanted vaccine). Pre-vaccinated sera were collected from all groups of birds. The mean of Passive Hemagglutination (PHA) titers of post-vaccination were 51±17.8, 76.8±17, 89.6±17, and 115±17.81 in group A, B, C and D respectively which consist of 5 birds in each. The vaccine produced better immune response when boostering with the similar dose and route at 15 days after primary vaccination. The mean PHA titers were higher at group D than other groups after boostering. Challenge infection was conducted on all the vaccinated and control group (n=5) of birds after 15 days of vaccination which protect 93.75% of birds and the PHA titers from different groups analyzed to determine the protective capacity of vaccinated chickens against challenge exposure. It was demonstrated that experimental oil adjuvanted fowl cholera vaccine with 0.5ml dose produce higher immune response against challenge infection and found to be safe. Microbes and Health, June 2013, 2(1): 1-4DOI: http://dx.doi.org/10.3329/mh.v2i1.17253

scholarly journals Alteration in Inflammatory Responses and Cytochrome P450 Expression of Porcine Jejunal Cells by Drinking Water Supplements

2019 ◽  
Vol 2019 ◽  
pp. 1-6 ◽  
Author(s):  
Orsolya Palócz ◽  
Géza Szita ◽  
György Csikó
Keyword(s):  
Gene Expression ◽  
Drinking Water ◽  
Cytochrome P450 ◽  
Epithelial Cells ◽  
Fulvic Acid ◽  
Intestinal Epithelial Cells ◽  
Feed Additives ◽  
Feed Additive ◽  
Mrna Levels ◽  
Intestinal Epithelial

The intestinal epithelium is the first determining barrier to the drugs administered per os. Cytochrome P450 (CYP) enzymes are substantial in the initial step of xenobiotic metabolism; therefore, intestinal CYP enzyme activities could be an important influencing factor of the oral utilization of xenobiotic substances. In this study, the effect of four drinking water supplements on CYP mRNA levels of porcine intestinal epithelial cells was examined. Further goal of the study is to describe the effect of these feed additives on the proinflammatory response of the LPS-treated enterocytes. The nontransformed porcine intestinal epithelial cells (IPEC-J2) were grown on six-well polyester membrane inserts. Cell cultures were treated with LPS (10 μg/ml), β-glucan (5 and 50 μg/ml), sanguinarine-containing additive (5 and 50 μg/ml), drinking water acidifier (0.1 and 1 μl/ml), and fulvic acid (25 and 250 μg/ml) for 1 hour. Cells were washed with culture medium and incubated for additional 1 h before total RNA isolation. IL-6, IL-8, TNF-α, HSP70, CYP1A1, CYP1A2, and CYP3A29 mRNA levels were measured. The LPS treatment upregulated the gene expression of IL-8 and TNF-α. The relative gene expression of IL-6 remained unchanged and TNF-α and HSP70 were downregulated after the treatment with each feed additive. CYP1A1 and CYP1A2 expressions increased after sanguinarine-containing solution, fulvic acid, and drinking water acidifier treatment. None of the treatments changed the gene expression of CYP3A29, responsible for the metabolism of the majority of drug substances used in swine industry. The feed additive substances inhibited the expression of proinflammatory mediators HSP70 and TNF-α; however, β-glucan and fulvic acid elevated the production of the chemokine IL-8 mRNA in endotoxin-treated enterocytes. All acidic supplements increased the expression of CYP1A1 gene; their constituents may serve as a ligand of CYP1A1 nuclear receptors.

scholarly journals Effects of 5-Aminolevulinic Acid as a Supplement on Animal Performance, Iron Status, and Immune Response in Farm Animals: A Review

Animals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1352
Author(s):  
Amin Omar Hendawy ◽  
Mostafa Sayed Khattab ◽  
Satoshi Sugimura ◽  
Kan Sato
Keyword(s):  
Immune Response ◽  
Egg Production ◽  
Aminolevulinic Acid ◽  
Iron Status ◽  
White Blood Cells ◽  
Feed Additives ◽  
Farm Animals ◽  
Clear Understanding ◽  
Standard Procedures ◽  
Cell Mediated Immune Response

Efforts directed toward enhancing animals’ productivity are focused on evaluating the effects of non-traditional feed additives that are safer than antibiotics, which have been banned because of their health hazards. Many studies used an amino acid that contributes to heme biosynthesis, known as 5-aminolevulinic acid (5-ALA), to promote the productivity of farm animals. However, these studies demonstrate inconsistent results. In order to develop a clear understanding of the effects of 5-ALA in farm animals, we comprehensively searched PubMed and Web of Science for studies evaluating 5-ALA effects on the performance, iron status, and immune response of different farm animals. The search retrieved 1369 publications, out of which 16 trials were relevant. The 5-ALA-relevant data and methodological attributes of these trials were extracted/evaluated by two independent researchers, based on a set of defined criteria. Samples were comprised of pigs, chickens, and dairy cows. The 5-ALA doses ranged from 2 mg to 1 g/kg of feed, and treatment duration ranged from 10 to 142 days. Overall, 5-ALA improved iron status in most studies and increased white blood cells count in 3 out of 10 studies, in addition to improving animals’ cell-mediated immune response following immune stimulation with lipopolysaccharide. Inconsistent findings were reported for growth performance and egg production; however, a combination of 10 mg/kg of 5-ALA with 500 mg/kg of vitamin C promoted the highest egg production. In addition, 5-ALA improved milk protein concentration. In conclusion, 5-ALA can enhance farm animals’ iron status and immune response; however, the heterogeneity of the reviewed studies limits the generalizability of the findings. Standard procedures and outcome measures are needed to confirm the benefits of 5-ALA. Attention should also be paid to any adverse effects.

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