Showing papers in "Poultry Science in 1998"

TL;DR: The results showed that body weights and feed to gain ratios were improved significantly when compared to control broilers for broilers fed diets containing 0.05 or 0.10% LC, but not 0.15% LC.

TL;DR: Dietary characteristics can modulate a bird's susceptibility to infectious challenges and subtle influences due to the level of nutrients or the types of ingredients may at times be of critical importance.

TL;DR: It appears that nutrient supply from yolk is less crucial for mucosal development then withholding feed for 36 h, which delays normal intestinal development, although rates of development were different in duodenum, jejunum, and ileum.

TL;DR: In meat-type poultry, growth-related disease can be reduced or eliminated by reducing feed intake without affecting final body weight, and metabolic imbalance induced by high nutrient intake may cause some of the conditions.

TL;DR: Heterophils are the predominate granulated leukocyte in the acute inflammatory response in gallinaceous birds and form the first line of cellular defense against invading microbes in the lungs and air sacs where resident macrophages are lacking.

TL;DR: These principles have been utilized in developing a monitoring system to warn of impending heat stress and in improving vehicle design to facilitate the prevention of heat stress during broiler transportation.

TL;DR: Differences in physical and microbiological properties of raw and marinated broiler breast fillets selected as being either lighter or darker than normal are compared, and further processors may consider separating breast fillet according to color.

TL;DR: Intestinal brush border phytase could contribute to phytate-phosphorus digestibility and may be subject to regulation in response to the dietary phosphorus and vitamin D status of the chicken.

TL;DR: Commercial broiler males used to evaluate body temperature response to heat stress and its relationship to gain, feed consumption, and feed conversion ratio and Feather weight as a percentage of BW was significantly greater in the 21 C environment than the 32 C environment.

TL;DR: Frequency of Salmonella colonization was significantly (P < 0.05) reduced due to yeast treatment and Campylobacter colonization was not significantly affected by yeast treatment.

TL;DR: It is demonstrated that this specific sorbent can provide protection against the toxicity of AF, but not T-2 toxin, in young broiler chicks.

TL;DR: Different effects of lysine, threonine, and valine can induce different amino acid requirement profiles according to the criteria used for determining the requirement, and the particular mathematical model being used to calculate amino acid requirements can also influence amino acid needs.

TL;DR: The results showed that the modified fluorometric TBARS method was useful for the samples with low lipid oxidation products, such as fresh raw meat, and facilitates the determination of oxidation products in small quantities of samples.

TL;DR: It appears from this study that phytase can improve growth performance of broilers fed low nP diets when provided either as a commercial supplement or in the form of transformed seeds.

TL;DR: Intraspecies variability among mycoplasma strains and their ability to interact with other disease-producing factors explain the wide variability of clinical manifestations, difficulties in diagnosis, their able to persist within the host for long periods of time, and many of the difficulties involved in control and eradication programs.

TL;DR: In this paper, the effect of diets with reduced CP and supplemental amino acids on broiler performance, N excretion, litter characteristics, and equilibrium NH3 gas concentration was investigated.

TL;DR: Allele distribution at the loci does not support either the stepwise or the infinite alleles mutation model, but the distribution pattern was quite irregular at different loci, suggesting the subdivision of the total population into different lines.

TL;DR: The results indicated that very high amino acid digestibility MBM can be produced in commercial rendering systems, however, differences in processing systems and temperatures can cause substantial variability in amino acids digestibility.

TL;DR: The results suggest that dietary manipulation shows merit for reducing litter N and P concentrations while maintaining acceptable production performance from broilers.

TL;DR: Future research directions will expand knowledge of the impact of genetics on disease resistance by identifying non-MHC genetic control of resistance and by further elucidating mechanisms regulating expression of genes related to immune response.

TL;DR: The findings of this study imply that the progeny chicks from hens consuming a AF-amended diet may be increasingly susceptible to disease owing to suppression of humoral and cellular immunity.

TL;DR: The predominant site of respiratory infections in the caudal air sacs, compared to other parts of the respiratory system, can be explained by the gas flow pathway and the mechanisms present in the parabronchi for particle removal.

TL;DR: Chickens exposed to S. enteritidis shortly after hatching can apparently remain infected until maturity, at which time they might produce contaminated eggs or spread the infection to other susceptible, previously unexposed hens.

TL;DR: Treatment of contaminated corn with electrochemically produced O3 provided protection against AFB1 in young turkey poults, and in vitro analyses demonstrated detoxification of AFB1, suggesting a potential method of remediate AF-contaminated grain.

TL;DR: Results indicated that both strain cross and protein level had effects on body weight and feed intake, and there were significant strain cross by protein level interactions for body Weight and carcass weight.

TL;DR: Oxidation promotion by Cu sulfate was much greater with fine than in coarse sized particles for all three fortification levels, even though TBCC modal diameter for particle size was almost seven times smaller.

TL;DR: It should be remembered that birds may need to perform behavior, including appetitive as well as consummatory elements, although the functional consequences of these are no longer required for survival.

TL;DR: Data indicate that total phosphorus can be reduced by at least 11% in diets prepared with HAP corn, or in diets supplemented with phytase, without affecting the performance or health of broiler chickens.

TL;DR: There was variability in protection against aflatoxicosis between two different samples of the same sorbent that had been stored for different lengths of time following activation, and protection by the sorbents against the effects of T-2 toxin was not observed.

TL;DR: It is suggested that elevated post-mortem temperatures during processing resulted in acceleration of rigor mortis and biochemical changes in the muscle that produced pale, exudative meat characteristics in turkey.