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Results 551 - 600 of 1456
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Reddish J M - - 2004
Selection for breast muscle yield and BW in commercial broilers has resulted in genotypes far different from broilers processed in the past. When comparative studies with commercial lines are conducted, it is often difficult to differentiate between carcass effects resulting from direct genetic selection vs. correlated effects that partially reflect ...
Guo F C - - 2004
We investigated the effects of polysaccharide extracts from 2 mushrooms, Lentinus edodes (LenE) and Tremella fuciformis (TreE), and an herb, Astragalus membranaceus (AstE), on cellular and humoral immune responses of Eimeria tenella-infected chickens. A total of 150 broiler chicks were assigned to 5 treatment groups: 3 groups were infected with ...
Sims M D - - 2004
Hybrid male turkeys were fed to 18 wk of age in a completely randomized design with 10 replicate pens (18 birds each) per treatment to compare growth promoters. Four dietary treatments were used: negative control (CON), bacitracin methylene disalicyate (BMD) at 55 mg/kg to 6 wk and 27.5 mg/kg thereafter, ...
Dilger R N - - 2004
Two trials were conducted to evaluate the efficacy of a new microbial phytase (Phyzyme XP) for broiler chicks. Trial 1 used 192 8-d-old male broilers in a 14-d trial to assess growth and nutrient utilization. Dietary treatments (221.9 g/kg CP) included a positive control [5.0 g/kg nonphytate P (NPP)], negative ...
Engberg R M - - 2004
An experiment was carried out to study the effect of different forms of wheat (airtight silo stored whole wheat, conventionally stored whole wheat, and ground wheat included in pellets) and dietary xylanase addition on production results and gastrointestinal characteristics of broiler chickens. Ileal viscosity, pancreatic digestive enzyme activities, and the ...
Wu Y B - - 2004
1. The aim of the present study was to examine the influence of whole wheat inclusion and xylanase supplementation on the performance, apparent metabolisable energy (AME), digesta viscosity, and digestive tract measurements of broilers fed on wheat-based diets. The influence of the method of whole wheat inclusion (pre- or post-pelleting) ...
Chantarapanont Walairut - - 2004
The objective of this research was to determine the effect of chlorine, acidified sodium chlorite, and peracetic acid treatments on viable Campylobacter jejuni located at various depths within follicles or folds of chicken skin. Chicken skin was inoculated with C. jejuni transformed with P(c)gfp plasmid (GFP-Campylobacter), which also codes for ...
Arnon E - - 2004
1. This study compared the effect of bilateral electrolytic lesions of the basomedial hypothalamus (HL) in broiler and White Leghorn (WL) males. 2. Hypothalamic lesions were placed in WL at 10 weeks of age (body weight 1.1 kg) and in broilers, either at 6 weeks (body weight 1.5kg) or at ...
Honaker C F - - 2004
Commercial equipment used by the turkey industry at hatch sterilizes the germinal tissue of the claw with microwave energy and the beak tissue with infrared energy. This effectively trims the claws and beaks of the birds. Two strains of Leghorn chicks (1,200 each strain) were utilized to test this technique ...
Korver D R - - 2004
The effects of triticale and wheat on broiler (mixed sexes) performance and cost of production were compared. In experiment 1, wheat- and triticale-based diets were fed to 3 strains of broilers (Ross x Ross, Hubbard x Hubbard, and Ross x Hubbard). Each of the diets was provided to 5 cages/strain ...
Ponte P I P - - 2004
There is an urgent need in industrialized societies to develop novel products that can lower human dietary cholesterol intake. Dehydrated alfalfa is a good source of hypocholesterolemic compounds such as saponins. Whether consumption of alfalfa by chickens would decrease the cholesterol content of broiler meat remains, however, to be established. ...
Heres L - - 2004
Consumption of poultry meat is associated with human Campylobacter and Salmonella infections. One way to control the presence of these bacteria in broiler flocks is to make chickens less susceptible for colonisation. Acidification of feed may be a tool to reduce the Campylobacter and Salmonella carriage in broiler chickens. In ...
Daskiran M - - 2004
Two experiments were conducted to evaluate the effects of a commercial endo-beta-D-mannanase (Hemicell) on overall performance, MEn, net energy for gain, and some serum parameters of broilers fed diets varying in beta-mannan level (experiment 1) and to evaluate effects of enzyme level on the same variables in broilers fed diet ...
Thomas D G - - 2004
AIM: To compare the effects of four stocking densities (5, 10, 15 or 20 birds per m2) on the performance, carcass characteristics and selected welfare indicators of broiler chickens. METHODS: A total of 756 day-old male broiler chicks were assigned as six replicates of 13, 25, 38 and 50 birds ...
Taylor R D - - 2004
1. Pelleted diets, incorporating whole or ground wheat or barley in the pellets, were fed to broiler chickens and proventricular dilatation, digesta characteristics and mortality were recorded. 2. The incidence of proventricular dilatation was reduced when whole grain was incorporated into pelleted diets at 200 g/kg. 3. Enzyme application did ...
Swamy H V L N - - 2004
An experiment was conducted to investigate the effects of feeding grains naturally contaminated with Fusarium mycotoxins on growth and immunological parameters of broiler chickens. Three hundred sixty, 1-d-old male broiler chicks were fed 1 of 4 diets containing grains naturally contaminated with Fusarium mycotoxins for 56 d. The diets included ...
Pope T - - 2004
Two experiments were conducted to assess effects of phase-feeding (PF) on broilers from 21 to 63 d. Experiment 1 evaluated the impact of PF on growth performance, whereas experiment 2 assessed the effects of PF on CP intake and nitrogen excretion. Diets were formulated using recommendations from NRC or linear ...
Selvaraj R K - - 2004
A study was conducted to evaluate the nutritive value and inclusion level of sunflower seed (SFS) in broiler diets. SFS contained 38.7% ether extract (EE), 16.9% CP, 14.9% crude fiber (CF), 3.5% ash, 0.57% lysine, and 0.46% methionine (89.2% DM basis). The AME (kcal/ kg) content of SFS in roosters ...
Chavez C - - 2004
To determine the impact of Met source on volatile compounds of broiler excreta, 2 trials were conducted using straight-run broiler chicks that were randomly distributed in battery cages with 3 replicate pens of 16 birds each. The treatment groups were 1) dry Met hydroxy analogue (52% Met activity), 2) sodium ...
Kidd M T - - 2004
1. Three experiments were conducted to measure growth and carcase responses of growing and finishing broilers fed on test diets formulated to be deficient in isoleucine (Ile). 2. Dose titration methodology was used to measure growth and carcase responses of growing and finishing broilers to graduations of Ile in three ...
Hocking P M - - 2004
1. Broiler breeder females were fed restricted allocations of food to meet target body weights. They were fed on a standard wheat-soy ration or on one of three series of rations containing 50, 100 or 200 g/kg of ground oat hulls, ground unmolassed sugar beet pulp or sunflower meal. Changes ...
Lázaro R - - 2004
A trial was conducted to study the influence of feeding regimen [ad libitum, (AL) vs. feed restriction, (FR)] and supplementation of the diet with a combination of xylanase and beta-glucanase on physiological parameters and performance of broilers fed rye-based diets. There were 4 dietary treatments arranged factorially with 2 feeding ...
Lyon B G - - 2004
Effects of diet and feed withdrawal times on the sensory profile and shear values of broiler breast meat were determined. Feeds were formulated with 3 dietary carbohydrate sources (corn, milo, and wheat). Birds (n = 192) were processed between 42 and 52 d of age. Feed was withdrawn for 0 ...
Decroos Karel - - 2004
The influence of the administration of a mixed probiotic on zootechnical performances and the microbial composition of the feces of young broilers, up 42 days old, was investigated. In a six weeks trial the feed was supplemented with 1(w/w)% of a mixture of five potentially probiotic strains belonging to the ...
Rosebrough R W - - 2004
Although changes in dietary protein levels change metabolism in the broiler chicken, there is little information concerning the time course of the process of adaptation. Therefore, male Hubbard broiler chickens were fed diets containing either 12 or 30% crude protein from 7 to 28 d of age and then were ...
Debski Bogdan - - 2004
The experiment was performed on ISA broilers at big farm conditions. One day old chickens were randomly assigned to two poultry-houses with the capacity of 10600 birds each. Chromium was provided in the form of chromium enriched yeast (1.0 g Cr/kg yeast) given in doses of 0.2 mg Cr/kg diet. ...
Komprda T - - 2003
Total cholesterol content in 24 fillets (F) of males and females of common carp, 35 samples of male chicken breast meat (BM) and thigh meat (TM), and 48 samples of male turkey BM and TM, respectively, was determined by high-performance liquid chromatography after total lipid (TL) extraction using n-hexane/2-propanol mixture. ...
Liew P K - - 2003
The effects of early age feed restriction and heat conditioning on heat shock protein (HSP) 70 expression, antibody production, resistance to infectious bursal disease (IBD), and growth of heat-stressed male broiler chickens were investigated. Chicks were divided into 4 groups: 60% feed restriction on d 4,5, and 6 (FR); exposure ...
Madiya A T - - 2003
Waste material from bakeries is an unconventional energy feed source which is available in sufficient quantities for use in small-scale broiler production in South Africa. Small-scale broiler producers do not have access to the computer programs required to balance home-mixed rations. This investigation confirms that the use of dried bakery ...
Fru Nji F - - 2003
Bambara groundnut (Vigna subterannea)--a leguminous root nut, which grows in the tropics and subtropics--was used in an experiment to test its effect on the performance of growing broiler chicks. Performance was measured by monitoring growth, measuring nutrients and energy balances and also by determining nutrient accretion. Twelve-day old broiler chicks, ...
Taylor M L - - 2003
Two 42-d experiments compared the nutritional value of YieldGard Rootworm corn (MON863; experiment 1) and YieldGard Plus corn (MON810 x MON863; experiment 2) to their respective nontransgenic controls and 6 commercial reference corn hybrids when fed to growing broilers. For each experiment, a randomized complete block design was used with ...
Mahmoud Kamel Z - - 2003
Dietary ascorbic acid (AA) and heat stress (HS) affect heat shock protein 70 (hsp70) and body temperature (BT) of strain cross white Leghorn chickens. At five weeks of age, chicks fed either no supplemental AA (N-AA) or 200 mg/kg AA (AA) were subjected to either HS (42 degrees C) or ...
Díaz-Cruz Antonio - - 2003
The objective of this study was to assess the effects of dietary supplementation with lipoic acid (LA) on broilers maintained at 2235 m above sea level with high risk to develop ascites syndrome (AS). A total of 2040 chicks were fed under commercial conditions with water and specific diets ad ...
Kleessen Brigitta - - 2003
Control of intestinal pathogens during the earliest phases of broiler production may be the best strategy for the reduction of human pathogens on processed broiler carcasses. The recent ban on antibiotics in poultry feed has served to focus much attention on alternative methods of controlling the gastrointestinal microflora. A field ...
Gabriel I - - 2003
A complete ground and pelleted feed was compared to free choice feeding of whole wheat and a pelleted protein concentrate during three experimental infections with coccidia in broiler chickens. At 22 d of age birds were inoculated with different doses of sporulated oocysts of a cecal species (Eimeria tenella) in ...
Bowling E R - - 2003
The attributes of broiler breeder males characterized by sperm mobility phenotype were studied in replicate experiments. Low and high phenotypes were observed in the first experiment over a 10-wk interval. Average straight line velocity differed between phenotypes (P < or = 0.05) as evidenced by computer-assisted sperm motion analysis. The ...
Havenstein G B - - 2003
The yield of carcass parts as well as levels of carcass fat, moisture, and ash were measured in the 1957 Athens-Canadian Randombred Control (ACRBC) and in the Ross 308 commercial broiler, when fed diets that were representative of those being fed during 1957 and 2001. The Ross 308 was used ...
Havenstein G B - - 2003
Body weight, feed consumption, and mortality were measured in the 1957 Athens-Canadian Randombred Control (ACRBC) strain and in the 2001 Ross 308 strain of broilers when fed representative 1957 and 2001 diets. The dietary regimens were chosen to be representative of those used in the industry in 1957 vs. 2001. ...
Williams B B Bone Biology Group, Division of Integrative Biology, Roslin Institute, - - 2004
Although it is well accepted that bone architecture adapts to withstand the loads placed on it, the manner in which this occurs in the immature growing skeleton is not fully understood. To investigate the possible mechanisms, we have compared morphometric differences between tibiae from chickens with fast and those with ...
Kalinowski A - - 2003
Two experiments were conducted with fast- (Ross x 3F8) and slow- (Ross x 308) feathering broiler males from 0 to 3 wk of age to determine Met and Cys requirements. A corn-soybean meal basal diet was formulated to be deficient in Met and Cys but was adequate in all other ...
Kalinowski A - - 2003
Two experiments were conducted to first determine Met then Cys needs of broilers from 3 to 6 wk of age and whether differences existed between slow-feathering (Ross x 308) and fast-feathering (Ross x 3F8) males. A corn-soybean meal diet (20.0% CP; 3,150 kcal ME/kg) with graded levels of Met or ...
Bokkers E A M - - 2003
1. It has been suggested that broiler chickens have a disturbed satiety and hunger mechanism. The satiety mechanism for eating can be expressed as the positive correlation between meal length and the length of the preceding (preprandial) interval; the hunger mechanism for eating as the positive correlation between meal length ...
Bamgbose A M - - 2003
The effect of feeding graded levels of tigernut meal (TGN) as a replacement for maize in the diets of cockerel starters on carcass characteristics and economics of feed conversion was assessed for 70 days. Tigernut replaced maize at 0%, 33.33%, 66.67% and 100% levels. A total of 120 day-old chicks ...
Khan M Z - - 2003
This study compared the adverse effects of formalin administered by two different methods. Formalin mixed with the feed (2.5, 5.0 and 10 ml/kg) was given to 10-week-old White Leghorn cockerels for a period of 8 weeks. Simultaneously in other groups, a 3% solution of formalin was administered into the crops ...
Nephew Benjamin C - - 2003
One potential stressor to vertebrates both in the wild and in captivity is the presence of numerous individuals in a confined space. To examine the effects of increased conspecific density in birds, we simultaneously measured cardiac, behavioral, and endocrine responses of European starlings (Sturnus vulgaris) to acute crowding. A cage ...
Lewis P D - - 2003
1. Photorefractoriness was assessed in two lines of broiler breeders. In one trial, male-line and female-line pullets were reared on the floor and transferred to individual cages at 15 weeks. Birds were either maintained on 8-, 11- or 16-h photoperiods or transferred from 8- to 16-h photoperiods at 67 or ...
Jonaidi H - - 2003
In addition to playing a role as a hormone, oxytocin (OT) can act as a neurotransmitter. In birds, mesotocin (MT) replaces OT. There is both direct and indirect evidence for behavioral effects of OT in rats and humans, but there have been no such studies performed in birds. The purpose ...
Collin Anne - - 2003
The objective of the present study was to investigate the effects of dietary macronutrient ratio on energy metabolism and on skeletal muscle mRNA expression of avian uncoupling protein (UCP), thought to be implicated in thermogenesis in birds. Broiler chickens from 2 to 6 weeks of age received one of three ...
Dhandu A S - - 2003
Two experiments were conducted to determine the nonphytin phosphorus (nPP) requirement for broilers, based on broken line analysis, in the finisher (32 to 42 d) and withdrawal phases (42 to 49 d) of a four-phase feeding program. The determined nPP concentrations used were 0.15, 0.19, 0.26, and 0.31% in the ...
Pophal Simone - - 2003
Apoptosis is a naturally occurring process; it is important for the final shape and size of developing tissues, and it is characterized by some morphological features such as plasma membrane blebbing, nuclear breakdown, chromosomal fragmentation and apoptotic bodies followed by phagocytosis. The objective of the study was to evaluate the ...
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