Showing papers in "Poultry Science in 2006"

TL;DR: Physical changes in the intestine of birds given either antibiotic growth promoter, although not the same, resulted in improved performance, and these changes were greater in birds fed VM than BMD at 1 and 3 wk of age.

TL;DR: IgY levels, total or antigen-specific, in the dams' plasma or eggs were found to be a direct indicator of maternal antibody transfer to the chicks' circulation, with an expected percentage transfer of approximately 30%.

TL;DR: The microbial communities of the ileum and cecum of broiler chickens from a conventional and an organic farm were investigated using conventional culture techniques as well as cloning and sequencing of 16S rRNA genes.

TL;DR: To successfully reduce the carriage of foodborne pathogens in poultry and livestock, it is likely that a combination of intervention strategies will be required.

TL;DR: D diets with DON contamination below levels that induce a negative impact on health and performance could affect small intestinal morphology in broilers and the histological alterations caused by DON were reduced by supplementing the DON-containing diets with PB.

TL;DR: Based on the present 4 studies in combination with 9 studies published earlier, it is suggested that with higher productivity rates of the broilers the effect of probiotics becomes smaller.

TL;DR: The data demonstrate the anti-nutritive effects of phytic acid and the potential of microbial phytase to improve energy utilization and the availability of P and amino acids in broilers fed starter diets.

TL;DR: The results showed that providing the carbohydrates as an energy source to the late-term embryo had a trophic effect on the small intestine and enhanced goblet cell development.

TL;DR: It is concluded that increasing stocking density beyond 30 kg of BW/m2 adversely affects growth responses and meat yield of broilers grown to 1.8 kg but does not alter physiological stress indicators.

TL;DR: A lower pH and higher lightness (L*) andRedness values and redness:yellowness were found in meat for broilers from both 34 degrees C and 34-34 degrees C groups and higher H:L was associated with breast muscle pH according to first-order polynomial regression.

TL;DR: In summary, low CP diets result in optimal growth of broilers with Gly + Ser levels of 2.44% and increase final BW, daily gain, and gain:feed (G:F) when CP was reduced.

TL;DR: There was no treatment impact on live performance of the birds throughout the 6-wk feeding trial, and thickness of the medial and lateral wall of the tibia, tibiotarsal index, percentage ash, and P content were significantly improved by the probiotic.

TL;DR: Research based on biochemical and molecular comparisons of sperm among lines may lead to identification of factors that influence the freezability of poultry semen, and susceptibility to the cryogenic process seems to vary among lines and strains of birds.

TL;DR: The present study provides the first evidence that synthesis of av UCP protein is downregulated in heat-stressed broilers, and suggests that acute heat stress stimulates mitochondrial superoxide production in broiler skeletal muscle, possibly via downregulation of avUCP.

TL;DR: It can be concluded that the ingestion of IP6 reduces the digestibility coefficients of amino acids and the metabolizability of nitrogen of casein, and the addition of phytase can partially ameliorate the detrimental effects of IP 6 on protein utilization.

TL;DR: The results of this experiment demonstrate that IOF of A or S poults may enhance hatch BW and glycogen status of poultts during the neonatal period by inclusion of HMB.

TL;DR: The surplus availability of nutrients in large eggs was held responsible for the absolute and relative higher weight of RY in chicks that hatched from large eggs compared with small eggs.

TL;DR: This paper summarizes and integrates original, primary QTL studies in the chicken to identify basic information on the genetic architecture of quantitative traits in chickens and shows several instances of consensus of QTL locations for similar traits from independent studies.

TL;DR: The results suggest that dark-colored DDGS may have been overheated during drying, causing Maillard reactions to be more extensive and resulting in a lowered total lysine content, l Lysine digestibility, and TMEn content.

TL;DR: Feed and water intake, total excreta, and excretory DM were all increased in ACTH-treated hens, and Reproduction in hens was negatively affected by ACTH treatment, as measured by cessation of laying on the third day of treatment, atretic follicles, and decreased oviduct weight.

TL;DR: It is found that each of the 10 "generally recognized as safe" probiotic isolates tested in vitro were capable of increasing heterophil oxidative burst and degranulation when compared with unstimulated controls.

TL;DR: It can be concluded that the supplementation of diets containing 3 g/kg of available P with exogenous phytase can improve the performance of chicks to that of birds fed a diet containing 5 g/ kg of available K and the use of high doses of phyt enzyme can improve nutrient availability in poultry diets beyond that of dietscontaining lower (< 1,000 U/kg) phytases.

TL;DR: The relative high heritability of FPD and the low genetic correlation to BW suggested that genetic selection against susceptibility to FPD should be possible without negative effects on BW gain.

TL;DR: This recent work was focused on finding a suitable replacement for glycerol, which is contraceptive in the hen, as a cryoprotectant, and favored straw freezing, as opposed to the highly effective pellet freezing method.

TL;DR: Marker-trait association analysis indicated that the 24-bp indel was associated with egg production (P < 0.01) and that H3 (C C T C T G) was the most advantageous haplotype for egg production.

TL;DR: Observations provide a link between bile salt deconjugation in the ileum by L. salivarius and decreased weight gain of broilers and Lactobacilli populations could be targeted in future studies aimed at modification of the ILEal bacterial community to achieve growth promotion of broiler chickens without the administration of antimicrobial drugs.

TL;DR: Increasing lipid levels in breast muscle increased lightness, yellowness, cooking loss, tenderness, and flavor, with correlation coefficients of 0.47, 0.43, and 0.28; however, breast meat color and tenderness were mainly influenced by genotype.

TL;DR: The changes in the composition of the intestinal bacterial community induced by antibiotics may be related to improvement in growth performance.

TL;DR: The results suggest that early deboning may affect meat quality of broiler strains differently, resulting in greater variation within the industry.

TL;DR: The incidence of dead on arrival (DOA) birds was surveyed over 33 broiler, 11 turkey, and 19 spent hen abattoirs representing the majority (around 70%) of the Italian poultry slaughter plants and might be used for establishing limit values of DOA as a welfare indicator during the preslaughter time of birds, including catching, loading, transportation, and lairage.