Recent developments in antimicrobial growth promoters in chicken health: Opportunities and challenges

Kalia, Vipin Chandra; Shim, Woo Yong; Patel, Sanjay; Gong, Chunjie; Lee, Jung-Kul

doi:10.1016/j.scitotenv.2022.155300

Cited by 31 publications

(22 citation statements)

References 201 publications

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“…Furthermore, it is stated that the exact mechanism of action for the yeasts has not been described in detail yet needs more exploration by scientific studies in terms of poultry. Only the positive effects on GIT have been reported in poultry, it has been defined that yeast supplementation in diet can increase the height of villi and reduce the depth of crypts, ultimately having positive effects on FCR and carcass percentage (Nilson et al 2004;Gosh et al 2011;Kalia et al 2022).…”

Section: Discussionmentioning

confidence: 99%

“…Among these, Saccharomyces cerevisiae is widely used as probiotics in broiler starter and finisher ration and is also known as baker yeast. In poultry feed, yeast products have been used as natural growth promoters (Kalia et al 2022). Different types of yeast have been included in the diet either in the form of yeast by products, commercial yeast products, or in the form of yeast fermented mash produced on farms (Kemal et al 2001;Saied et al 2011;Ismael et al 2022).…”

Section: Introductionmentioning

confidence: 99%

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Probiotics Improve Physiological Parameters and Meat Production in Broiler Chicks

2022

Int J Vet Sci

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The present study was planned to probe the effects of a commercial yeast product as a probiotic on growth performance and quality of meat production in broiler birds. For this purpose, 140 broiler chicks (a-day old) were purchased from a local hatchery and reared as per standard housing conditions. After three days of acclimatization, chicks were divided into seven equal groups (A to E). Group A was kept control negative. Groups B1, C1, and D1 were treated with Yeast Guard Pro® @ 1, 1.5, and 2% in feed, respectively. Groups B2, C2, and D2 were first challenged with Newcastle disease virus (NDV) along with 1, 1.5 and 2% of the yeast. Group E was kept as a control and challenged with NDV. Physiological and hemato-biochemical parameters were evaluated. The data obtained were analyzed statistically. A significant increase in the feed intake was observed from 2nd to 5th week of experiment in probiotic supplemented groups as compared. A significant change in hemato-biochemical values were also observed in yeast supplemented group. It was concluded that using Saccharomyces cerevisiae has beneficial effects on broiler chickens' performance and body weight gain. It also has hepatoprotective and immune stimulatory effects even the birds are exposed to Newcastle disease.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Probiotics Improve Physiological Parameters and Meat Production in Broiler Chicks

2022

Int J Vet Sci

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“…Spain is a leading European meat producer, with chicken meat representing 11.8% of the entire local production [ 3 ]. In fact, the preference for chicken as the source of protein has grown by 70% over the last three decades, and poultry livestock are promoted as a food source to meet the protein requirements of human nutrition [ 4 ]. The poultry industry generates various types of waste, including feathers, blood, bones, and skin; feather alone represents 5 million tons of waste per year (worldwide) [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Functionalization Routes for Keratin from Poultry Industry Side-Streams—Towards Bio-Based Absorbent Polymers

et al. 2023

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Keratin is a largely available protein that can be obtained from the ca. 3 million tons of feathers that the European poultry industry produces as a side-stream. Here, the functionalization of keratin from poultry feathers was evaluated using a one- versus two-stage process using two functionalization agents (succinic anhydride-SA and ethylene dianhydride-EDTAD). The functionalization resulted in the keratin having improved liquid swelling capacities, reaching up to 400%, 300%, and 85% increase in water, saline, and blood, respectively, compared to non-functionalized keratin. The highest swelling was obtained for samples functionalized with EDTAD (one-stage process), while the highest saline uptake was noted for samples processed with 25 wt% SA (two-stage process). Swelling kinetics modeling indicated that the water uptake by the functionalized samples takes place in two steps, and the EDTAD samples showed the highest diffusivity. It is demonstrated that the one-stage functionalization of keratin utilizing EDTAD results in better performance than two-stages, which allows for resource-saving and, thereby, protecting the environment. The results show some potential for the keratin to be utilized as liquid absorbent materials in water, saline, and blood uptake applications. Using keratin from side-streams is an advantage from a sustainability perspective over biomacromolecules that need to be extracted from virgin biomass.

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“…For decades, subtherapeutic doses of antibiotic growth promoters have been used to improve the growth rate and feed conversion efficiency of poultry and prevent diseases that occur in intensive farming 1 . However, the increasing spread of marker genes encoding antibiotic resistance and contamination with drug residues are both potential hazards to human health and the environment 2,3 . Antibiotics have been prohibited in the feed of livestock; however, this prohibition resulted in increased disease incidence in intensive poultry production and decreased the efficiency of animal feeding 4,5 .…”

Section: Introductionmentioning

confidence: 99%

Dietary supplementation with probiotics increases growth performance, improves the intestinal mucosal barrier and activates the Wnt/β‐catenin pathway activity in chicks

Tong

Zeng

et al. 2023

J Sci Food Agric

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Background Probiotics comprise effective feed additives that can replace antibiotics in animal livestock production. However, mono‐strain probiotics appear less effective because of their instability. Therefore, the present study aimed to investigate dietary supplementation with compound probiotics (CPP) on growth performance, diarrhea rate and intestinal mucosal barrier, as well as the possible molecular mechanism, in chicks. In total, 360 1‐day‐old chicks of the Hy‐Line Brown Chicks were randomly divided into the control group (CON, basal diet), chlortetracycline group (500 mg kg−1 CTC) and compound probiotics group (1000 mg kg−1 CPP, consisting of Bacillus subtilis, Bacillus licheniformis, Enterococcus faecium and yeast). The experiment period was 56 days. Results The results showed that, in comparison with the CON group, CPP significantly increased the average daily feed intake and average daily gain of chicks and reduced diarrhea (P < 0.05). The probiotic group exhibited increased immune organ (i.e. spleen and thymus) mass and increased levels of serum immunoglobulin (Ig)A, IgM and IgG (P < 0.05) compared to the CTC group. In addition, the jejunal mass and morphology were improved in the probiotic group (P < 0.05). Moreover, CPP reinforced jejunal barrier function, as indicated by increased transepithelial electrical resistance, protein expression of occludin and claudin‐1, and diamine oxidase levels in the jejunum (P < 0.05). Likewise, enhanced fluorescence signals of proliferating cell nuclear antigen‐labeled mitotic cells and villin‐labeled absorptive cells in the jejunum (P < 0.05) suggested that CPP promoted intestinal stem cells activity. Mechanistically, the Wnt/β‐catenin signaling pathway, including β‐catenin, TCF4, c‐Myc, cyclin D1 and Lgr5, was amplified in the jejunum by CPP addition (P < 0.05). Conclusion The present study demonstrated that dietary supplementation with CPP reinforced the jejunal epithelial integrity by activating Wnt/β‐catenin signaling and enhanced immune function in chicks. © 2023 Society of Chemical Industry.

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Recent developments in antimicrobial growth promoters in chicken health: Opportunities and challenges

Cited by 31 publications

References 201 publications

Probiotics Improve Physiological Parameters and Meat Production in Broiler Chicks

Probiotics Improve Physiological Parameters and Meat Production in Broiler Chicks

Functionalization Routes for Keratin from Poultry Industry Side-Streams—Towards Bio-Based Absorbent Polymers

Dietary supplementation with probiotics increases growth performance, improves the intestinal mucosal barrier and activates the Wnt/β‐catenin pathway activity in chicks

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