Showing papers in "Poultry Science in 2002"

TL;DR: It is indicated that PSE chicken can represent a substantial proportion of commercially processed broiler meat and could potentially exhibit poor water-holding capacity.

TL;DR: Low-protein diets failed to support equal growth performance to that of high-protein control diets and whole-body composition of broiler chicks fed low- protein diets supplemented with crystalline amino acids.

TL;DR: It was concluded high yield per unit area with good carcass quality could be achieved when ventilation rate and air circulation were adequate and broilers per unit of floor space was highest.

TL;DR: It is demonstrated that microbial phytase supplementation to low-P diets improved performance; P, Ca, Mg, and Zn use; and tibia weight and relative liver weight in broiler chickens.

TL;DR: Six bioassays were conducted to determine the ideal ratios of several amino acids relative to Lys, and gain:feed requirements for Lys were much higher than weight gain requirements.

TL;DR: It was concluded that under the conditions of this study, which tried to simulate commercial conditions, the bursal weight was the best indicator of stress that was related to housing density and addition of perches appeared to increase this level of stress.

TL;DR: The results of this study indicated that the MEn and AA digestibility of corn-SBM and corn-canola meal diets increase with age for young chicks and the latter ingredients may have beneficial effects for very young chicks.

TL;DR: In 1995, an antibiotic (ANT) was used in starter, grower, and withdrawal (WD) feeds by 94.3, 98.2, and 75.1% of broiler production units, but by 2000, ANT use had declined, but use of ION + ROX + ANT increased, and there were no significant differences in calorie conversion.

TL;DR: This study compared three non-linear growth models (Richards, Gompertz, and logistic) and the spline linear regression model using BW measurements from an unselected, randombred chicken population and concluded that growth parameters predicted with different models with fixed inflection points are not directly comparable.

TL;DR: It is demonstrated that EO water can reduce ST on poultry surfaces following extended refrigerated storage, and although effective against ST, TSP and AA are costly and adversely affect the environment.

TL;DR: It was concluded that 2% supplemental dietary tamarind could decrease serum cholesterol concentrations and increase layer performance and overall performance in different layer strains.

TL;DR: An F2 chicken population was established from a cross of a broiler sire-line and an egg laying (White Leghorn) line, and genetic effects were generally additive, and the broiler allele increased body weight in all cases.

TL;DR: Chia significantly lowered the saturated fatty acid content as well as the saturated:polyunsaturated fatty acid and omega-6:omega-3 ratios of the white and dark meats compared to the control diet.

TL;DR: Differences by color group might indicate that extreme variation in color may be due to long-term genetic factors as well as short-term antemortem stress.

TL;DR: It can be concluded that organic acids, individually or in combination, have a strong bactericidal effect on Campylobacter spp.

TL;DR: Results suggest that reduction of abdominal fat in broilers fed linseed oil seems to be a consequence of higher lipid oxidation despite the higher synthesis of endogenous fatty acids.

TL;DR: A mapping population segregating for egg quality traits was created by a line cross between two egg layer lines and screened by a genome scan, where the most interesting area was on chromosome 4, where highly significant QTL effects were detected for BW, egg weight, and feed intake in the same area.

TL;DR: Results indicate that lower respiratory chain coupling in low FE muscle mitochondria may be due to lower activities of Complexes I and II and defects in electron leak and provide insight into cellular mechanisms associated with the phenotypic expression of feed efficiency in broilers.

TL;DR: Salmonella-specific IgY could bind to the antigens expressed on the Salmonella surface, resulting in structural alterations of the bacterial surface, and was demonstrated to inhibit Salmoneella growth in liquid medium.

TL;DR: Dietary CLA at 2 and 3% levels influenced meat quality in broilers, and after cooking, the breast meat from 2 or 3% dietary CLA treatment was harder and drier, and the color was a little darker than that of the control.

TL;DR: Broilers appeared able to recover from mild feed restriction, and there was always an associated reduction in mortality.

TL;DR: The decrease in BW at 2 wk of age in challenged birds indicates that bacteriophage treatment did not provide complete protection and may provide an alternative to the use of antibiotics in poultry production; however, in all three studies mortality was significantly decreased, indicating that aerosol spray of bacteriophile may be practical for administration of bacter iophage.

TL;DR: It appears that broilers selected for rapid growth under optimal conditions do not achieve their genetic potential under high AT, and specific indicators of adaptation to heat, possibly water consumption or body temperature, should be added to commercial selection for rapid growing to improve broiler performance in hot climates.

TL;DR: Lauric acid and 2.5% pure nisin were incorporated singly and together into thermally compacted soy films for antimicrobial packaging applications for further processed meats and reduced cell numbers on turkey bologna.

TL;DR: In this paper, the authors hypothesized that increased distance between resources and stimulation of foraging behavior, through altering the degree of environmental complexity by using moving lights and scattering whole wheat in the litter, would improve physical activity of broiler chickens.

TL;DR: Feeding FH during the grower period had the most beneficial effect in terms of growth and feed conversion on broiler performance and feed:gain was lower for the FH22-42 and FH0-42 treatments compared to the NAFH.

TL;DR: It was concluded that feeding maize which was highly contaminated with Fusarium mycotoxins adversely influenced performance of hens and modulated immune response.

TL;DR: A significant interaction of flock age x turning in storage for hatchability of fertile eggs in Experiment 1 suggested that eggs from an older broiler breeder flock that exhibit reduced fertility benefited more from turning during storage than did eggs from a young broiler Breeder flock.

TL;DR: It is suggested that polyunsaturated fatty acids reduce fat deposition in separable fat depots with respect to monounsaturated and saturated fats but not in the rest of the bodyfat depots.

TL;DR: Differences in mineralization rates and growth characteristics suggest that the functionality and integrity of the femur should not be assumed solely from tibia measurements.