Showing papers in "Poultry Science in 2005"

TL;DR: The biological basis for antibiotic effects on animal growth efficiency will consider effects on intestinal microbiota and effects on the host animal and will use the germ-free animal to illustrate effects of the conventional microflora.

TL;DR: It could be concluded that dietary yeast components, such as WY or CW supplementation improved growth performance and meat tenderness could be improved by the Wy or YE.

TL;DR: It is reasonable to assume that the elevated glycogen levels in the in ovo treatment reduce the need to produce glucose via gluconeogenesis and, therefore, contribute to less use of muscle protein and hence a greater percentage of pectoral muscle weight in theIn ovo birds.

TL;DR: It is evident from the present studies that the addition of an appropriate combination of carbohydrase enzymes to target cell wall polysaccharide structures could further improve enzyme efficacy in practical wheat, SBM, canola meal, and peas-based broiler diets.

TL;DR: Results show that 0.2% butyric acid can help to maintain the performance and carcass quality of broilers, especially in vaccinated birds challenged with coccidiosis.

TL;DR: Chicks that hatched from eggs incubated at low EST during wk 1 of incubation had lower rectal temperature after hatching, especially under low housing temperatures, and this effect lasted until 7 d posthatch in batch 1, and the highest rectal temperatures were always found in chicks incubation at 37.8 degrees C EST constantly throughout incubation.

TL;DR: The study provides the first evidence of superoxide anion production in the skeletal muscle mitochondria of meat-type chickens in response to acute heat stress, suggesting the irrelevance of ANT in the regulation of reactive oxygen species flux under heat stress conditions.

TL;DR: It can be concluded that the use of phytase and XAP individually in a corn/soybean meal-based diet is effective in improving nutrient digestibility and performance of broilers fed nutritionally marginal diets.

TL;DR: It would appear from this study that the nutrient utilization of corn-SBM diet by broilers could be enhanced by using an appropriate multicarbohydrase enzyme supplement.

TL;DR: Data indicate that meat quality differences exist among genotypes with very different growth rates and reared with or without outdoor access.

TL;DR: Butyric acid decreases cecal colonization shortly after infection, decreases fecal shedding, and as a consequence, decreases environmental contamination by S. enteritidis-infected broilers, however, complete elimination can probably only be achieved with a combined approach using both hygienic measures and different protection measures.

TL;DR: It is indicated that organic Se increases tissue Se concentration, but it does not affect growth performance, carcass traits, or pGPX3 activity compared with inorganic Se.

TL;DR: Significant growth performance and yield differences exist among genotypes in alternative poultry systems, and these data indicate that substantial growth performances and yields are likely to be different among genotype systems.

TL;DR: The results indicate that increasing the density beyond 30 kg/m2 elicited some negative effects on live performance of heavy broilers, partially explained by less feed consumption.

TL;DR: The results from this experiment indicate that percentage hen-day production is not affected by Se source, and that SY increases egg Se concentrations more than SS.

TL;DR: A growth trial and a metabolism trial were conducted as 2 experiments to investigate the effects of dietary enzyme supplementation on performance, nutrient digestibility, intestinal morphology, digestive organ size, and volatile fatty acid profiles in the hindgut of broiler chickens fed wheat-based diets.

TL;DR: Sufficient concentrations of an appropriate bacteriophage, or a bacteriophile mixture, can significantly reduce recoverable Salmonella from carcass rinses.

TL;DR: The effects of chicken breast meat lightness value (L*) on microstructure, protein extraction, and marinating and tumbling was investigated and the PSE meat showed larger intercellular spaces among muscle fibers and bundles compared with normal and DFD meat.

TL;DR: The results confirmed that delay in feed access caused weight loss during holding time and depressed growth rate after access to feed, and it was suggested that the adverse effects of delay inFeed access can be reduced by providing a source of energy in hatching baskets or during transportation.

TL;DR: Lower serum levels of total protein, albumin, and globulins were observed for all AFB, containing diets without SB addition, whereas all other treatments were not altered.

TL;DR: The results indicated that although the physical quality factors monitored in this study decreased during storage, egg quality was still acceptable beyond current recommended shelf life guidelines.

TL;DR: It is demonstrated for the first time to the authors' knowledge that dietary COS supplementation was effective in increasing the ileal digestibilities of nutrients and feed efficiency in broilers.

TL;DR: The objective of this research was to improve the accuracy of the calculations of egg volume and surface area based on the measurements of the egg length and breadth, and develops a formula that could be both accurate and suitable for calculations.

TL;DR: Variation in broiler health and welfare was associated with the percentage of time a company could maintain house temperature and RH within limits recommended by the breeder company, suggesting that better control of humidity might lead to improved welfare.

TL;DR: Nonlinear relationship between TBARS values in cooked meat and alpha-tocopherol content of raw meat showed saturation in the antioxidant effect of alpha-Toc, which showed linear increase as the concentration of PUFA in raw meat increased.

TL;DR: The evolved Escherichia coli phytase was efficacious in improving broiler growth performance, bone characteristics, and retention of P, Ca, N, and a number of amino acids.

TL;DR: Although heritabilities for these traits were moderate to high, genetic correlations with ESC were low, suggesting a minor relationship between shell color and physical attributes of the shell as well as internal egg quality in brown-egg dwarf layers.

TL;DR: The ability of MOS to adsorb and degrade AFB1, reducing gastrointestinal absorption of AFB1 and its levels in tissues was demonstrated, and MOS appeared to increase protein percentage in albumen.

TL;DR: Hatching egg quality during storage was affected by dietary PUFA and Se content, as well as broiler breeder age, and eggs from the FO treatment were smaller with thinner eggshells compared with the SO treatment, but addition of Se to the FO diets ameliorated some of these effects.

TL;DR: Results of the present study suggest that supplementation with ZnPic could be considered to be more protective than ZnSO4.H2O by reducing the negative effects of oxidative stress induced by heat stress in quail.