Showing papers in "Poultry Science in 2019"

TL;DR: The type and amount of antibiotics used in poultry production and the level of antibiotic resistance in Escherichia coli isolated from broilers are identified and the absence of a harmonized approach in the monitoring of antibiotics per animal species and the evaluation of resistances is clearly displayed.

TL;DR: The aim of this presentation was to address the role of oxidative stress and inflammation to combat infectious pathogens, and to elucidate how the reactive processes will contribute to normal immune defense mechanisms of the animal.

TL;DR: The scientific evidence about how heat stress affects the quality of chicken meat through the acid/base status, oxidative reactions, and changes in hormonal secretions is discussed.

TL;DR: Probiotics and prebiotics can be used in chicken feed safely and without any adverse effects on the productive parameters and immune status of the flock, and have a positive effect on microbial count in 5-week-old broilers.

TL;DR: The gut microbiota in broilers were changed by heat stress, and the changes of the gut microbiota could provide the basis for further research on the heat stress.

TL;DR: Evidence related to modulation of the antioxidant capacities in poultry by vitamin E is presented and it was shown that increased vitamin E supplementation in the breeder's or cockerel's diet increased their resistance to various stresses, including high polyunsaturated fatty acids, mycotoxin, or heat stress.

TL;DR: In this article, the potential usefulness of the instruments currently available to induce early life programming in broilers is discussed, as well as the potential use of such instruments to manipulate the Gut Microbiome (GIT) of young chicks.

TL;DR: The results reveal the importance of SB in improving intestinal development, inducing an anti-inflammatory effect during intestinal inflammation progression, and modulating the microbial community in broilers.

TL;DR: There is a need to commercially validate positive impacts of cost‐effective enrichments on bird behavior and physiology, and areas for future research identified.

TL;DR: Lactobacillus plantarum 16 and BSC10 could improve intestinal and body health status of broilers by increasing intestinal barrier function, anti-oxidative capacity and immunity, and decreasing cell apoptosis with strain-specificity.

TL;DR: It is demonstrated that the CP content of grower and finisher diets can be reduced by 2.2–2.3% units without adverse effects on growth performance of broilers, while CP reduction seems promising to reduce nitrogen excretion from broiler houses, improve bird welfare, and reduces dependence on vegetable protein sources.

TL;DR: EOA may reduce harmful bacteria and promote digestive enzyme activity and higher concentrations of SCFA, and enramycin may inhibit the growth of beneficial bacteria and reduce the need for intestinal mucosal barrier function.

TL;DR: It is suggested that MOS improved growth performance, and oxidative status and barrier integrity in the intestine of broilers under cyclic heat stress.

TL;DR: The cyclic HS had a significant effect on the performance, egg quality, and blood chemistry over the 4-wk HS.

TL;DR: In this paper, the authors evaluated the effectiveness of the bacteriophage cocktail SalmoFREE® to control Salmonella on a commercial broiler farm and assessed the relationship between the use of SalmoFree® and productivity parameters (feed conversion, weight gain, homogeneity).

TL;DR: Findings indicated that baicalin promoted mitochondrial dynamics imbalance and effectively prevents oxidative stress and apoptosis in the splenocytes of chickens infected with MG.

TL;DR: Positive alterations to the microbial populations in the gut of broiler may at least be a partial mechanism by which B. subtilis DSM 32315 reduced pathology and improved performance of broilers in the NE challenge.

TL;DR: The effect of a multiallelic indel in the CDKN3 gene on the economic traits of chickens, and this indel was significantly associated with growth and carcass traits in chickens.

TL;DR: Results showed that GSLS promoted significantly higher NDV- and IBV-specific antibody responses with the highest antibody response detected in GSLS-Se group, and the increased antibody was capable of neutralizing NDV andIBV.

TL;DR: In ovo SAA injection (methionine plus cysteine) in the embryonated eggs exposed to heat stress increased GSH‐Px gene expression and antioxidant indices, and reduced HSP70 gene expression, corticosterone concentrations, and lipid profile of newly hatched broiler chicks.

TL;DR: Assessment of the effects of zinc oxide nanoparticles on the growth performance, zinc (Zn) concentration in edible tissues, thiobarbituric acid reactive substance, and corticosterone concentrations in broilers reared under normal or heat stress environmental conditions concluded that further research is needed to determine the optimal level of dietary ZnONPs supplementation.

TL;DR: In conclusion, CGAE supplementation at 1,000 mg/kg could alleviate the adverse effects of heat stress on growth performance and meat quality and improve oxidative stability and fatty acid profile of breast meat in heat-stressed broilers.

TL;DR: Investigating the effect of stocking density and sex on growth performance, meat quality, and intestinal barrier function in broiler chickens concluded that increasing stocking density decreases broiler performance regardless of sex and this negative effect is likely associated with decreased intestinal barrierfunction.

TL;DR: The results clearly indicate that the capacity of intestinal microbiota to degrade AX in the hindgut increases as the broiler ages, and suggests that the benefits of endoxylanase supplementation of broiler feeds depend on the interaction of the intestinal microbiota and AX present in the GI tract at specific broilers ages.

TL;DR: In conclusion, the broilers orally administrated carvacrol essential oils inhibited the secretion of inflammatory cytokines caused by LPS, affected the pathway of TLRs/NF‐&kgr;B, and showed an anti‐inflammatory function.

TL;DR: Observations indicated that ultrasound treatment was necessary for modification of CPP to meet the requirements for food processing, especially UCPP‐20, which showed a significant increase in antioxidant properties over CPP.

TL;DR: Dietary supplementation of B. subtilis 29784 significantly improved the growth performance of broilers, likely through beneficial effects on microbiota and host.

TL;DR: It was concluded that CP infection induced inflammatory response in the intestine of broiler chickens, and the mechanisms of inflammation are probably mediated via Th2 and Th17 cells.

TL;DR: The effectiveness of chicken semen long‐term storage for the restoration of lost genetic resources is demonstrated and the importance of standardized chicken semen cryopreservation is highlighted using procedures combining biophysical (cryoprotectants, freezing/thawing conditions) and zootechnical (artificial insemination) features.

TL;DR: In conclusion, chronic heat exposure activated LXRα pathway and enhanced fat synthesis in the liver after 7 D of heat exposure, and chronic heat stress resulted in lipid accumulation in the Liver of broilers.