Showing papers in "Poultry Science in 2013"

TL;DR: A phylogenetic diversity census of bacteria identified in the intestinal tract of chickens and turkeys using a naïve analysis of all the curated 16S rRNA gene sequences archived in public databases helps identify gaps in knowledge on bacterial diversity in poultry gastrointestinal tract.

TL;DR: Hydlyzed peptides from these proteins showed very good angiotensin I converting enzyme inhibitory, anticancer, metal binding, and antioxidant activities, indicating emerging areas with many new applications of separation of egg white proteins and the productions of bioactive peptide from eggwhite proteins.

TL;DR: Feed supplementation with thymol + carvacrol enhanced performance, increased antioxidant enzyme activities, retarded lipid oxidation, enhanced digestive enzymes activities, and improved immune response of broilers.

TL;DR: The histopathological changes occurring in white striping indicate a degenerative myopathy that could be associated with increased growth rate in birds and is supported by the findings from proximate analysis.

TL;DR: The results indicate that although HS reduced production and caused behavioral changes among hens from both strains, the responses differed by genotype, providing evidence that genetic selection is a useful strategy for reducing HS response in laying hens.

TL;DR: Results indicated that the probiotic product incorporating Lactobacillus fermentum and Saccharomyces cerevisiae could stimulate intestinal T-cell immune system without decreasing growth performance in broilers during 1 to 21 d.

TL;DR: The results indicate that the dietary supplementation of DFM increases the growth performance of birds at an early age, stimulates the immune response, decreases the number of E. coli, and improves the ileal morphology of broiler chickens.

TL;DR: The importance achieved by WS defects in the production of broiler meat as well as its very negative impact on water holding and binding capacity of breast meat is revealed.

TL;DR: The cumulative evidence attributes the elevated pulmonary vascular resistance in PAH-susceptible broilers to an anatomically inadequate pulmonary vascular capacity, to excessive vascular tone reflecting the dominance of pulmonary vasoconstrictors over vasodilators, and to vascular pathology elicited by excessive hemodynamic stress.

TL;DR: In conclusion, the supplementation of B. subtilis PB6 not only controlled C. perfringens-induced NE, but also improved intestinal health in the broiler birds.

TL;DR: It is suggested that E. faecium can promote growth performance, improve intestinal morphology, and beneficially manipulate the cecal microflora in broilers challenged with E. coli K88.

TL;DR: The results indicate that dietary β-1,3/1,6-glucan can alleviate intestinal mucosal barrier impairment in broiler chickens challenged with Salmonella Typhimurium.

TL;DR: It is revealed that Sb and Bs could modulate intestinal ultrastructure through increasing occluding, cloudin2, and cloudin3 mRNA expression levels in broiler intestine and Sb induced inflammatory and antiinflammatory cytokines improved in the probiotic groups.

TL;DR: The results of this study suggest that there is a greater chance of higher degrees of white striping associated with heavier birds, but the condition is not related to any major changes in cooked meat quality.

TL;DR: Results demonstrate that 0.12% supplemental GAA, like creatine, produces consistent growth responses in young chicks fed Arg-deficient diets, and indicate that GAA can be used as an efficacious replacement for dietary Arg for young chicks.

TL;DR: Dietary inclusion of B. licheniformis could improve laying performance and egg quality significantly in a dose-dependent manner by decreasing the stress response, upregulating the growth hormone, and improving intestinal health.

TL;DR: Dietary bioflavonoids genistein and hesperidin could positively improve the fatty acid and lipid metabolite profile of broiler breast meat in a dose-dependent fashion and could be a feasible alternative of antioxidant plants/herbs and synthetic feed additives for the production of healthier chicken meat.

TL;DR: This is the first study to associate levels of fear and CORT to production in commercial PS flocks and assesses genotype and group size effects.

TL;DR: Line effects are clearly observed by the comparison of the contents of carnosine, anserine, creatine, and IMP for each meat type according to each sex, useful for selection and development of high-quality, meat-type chicken breeds.

TL;DR: The results suggest that there is no systemic infectious or inflammatory condition associated with a SEV degree of white striping and elevated serum enzyme levels confirm the muscle damage associated with the degenerative myopathy in SEV birds.

TL;DR: Improvements in FCR in the NC+1500 may be associated with mitigation of the antinutrient effects of phytate rather than improved P utilization.

TL;DR: In this paper, the authors identify determinants of poor welfare in commercial broiler chicken flocks by studying the associations between selected resource-based measures (RBM, potential risk factors), such as litter quality and dark period, and animal-based welfare indicators (ABM) such as foot pad dermatitis and lameness, and establish the breadth of effect of a risk factor by determining the range of animal welfare indicators associated with each of the risk factors.

TL;DR: Outdoor access had no effect on growth performance and yield traits but could improve the meat quality; birds reared with outdoor access from 36 d of age had better appearance and meat quality than those with outdoorAccess from 71 d ofAge.

TL;DR: The results of this study suggest that the growth-promoting effect of penicillin supplementation in broilers may be mediated by a similar microbial process, indicating this microbial shift could be responsible for the increase in energy harvest and BW.

TL;DR: The purpose of this review is to provide an overview of the principles of these current technologies and their potential application to improve poultry production and food safety as well as public health.

TL;DR: Results suggest that dietary C. longa could be used to attenuate Eimeria-induced, inflammation-mediated gut damage in commercial poultry production.

TL;DR: The objective of the current study was to determine if metal perches during all or part of the life cycle of White Leghorns affected hen musculoskeletal health, especially at end of lay.

TL;DR: It was concluded that intermittent TM during broiler embryonic development had a long-lasting effect on energy balance that led to improved FCR and breast muscle yield.

TL;DR: It can be concluded that dietary supplementation with MYO or phytase was effective in improving performance of commercial broiler chickens, however, further work is required to explore complex ontogenetic effects of MYO and possible involvement of both myo-inositol and phytases in Na-dependent transport mechanisms.

TL;DR: In spite of the length of this selection experiment (54 generations), genetic variance and beneficial mutations have allowed continued, linear response to selection for increased BW8, which has been tempered by physiological barriers that have decreased survival of young chicks or the ability of females to reproduce.