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British Poultry Science

H Endo, N Tsunekawa, M Sonoe, T Sasaki, H Ogawa, T Amano, N T Son, V Phimphachanhvongsod, K Kudo, T Yonezawa, F Akishinonomiya
1. The skulls and postcranial skeletons of the red jungle fowl (Gallus gallus) were compared osteometrically between the populations from North and South Vietnam, North and Central Laos and Southeast Bangladesh. The populations include the three subspecies of G. g. spadiceus, G. g. gallus and G. g. murghi and were sampled to reveal the geographical morphological variations among populations in G. gallus. 2. The morphometric characteristics of subspecies murghi could be clearly distinguished from those of the other subspecies using a canonical discriminant analysis...
April 18, 2017: British Poultry Science
M Akter, P A Iji, H Graham
1. The effect of different levels of dietary iron on phytase activity and its subsequent effect on broiler performance was investigated in a 3 x 2 factorial arrangement. A total of 360 day-old Ross 308 male broiler chicks were distributed to 6 experimental diets, formulated with three levels of Fe (60, 80 and 100 mg/kg) and two levels of phytase (0, 500 FTU/kg). 2. Phytase supplemented to mid-Fe diets increased feed consumption more than the non-supplemented diet at d 24. From hatch to d 35, Fe x phytase interaction significantly influenced the FI, BWG and FCR...
April 11, 2017: British Poultry Science
V Jazi, F Boldaji, B Dastar, S R Hashemi, A Ashayerizadeh
1. This experiment was conducted to evaluate the effects of replacing dietary cottonseed meal (CSM) or fermented cottonseed meal (FCSM) for soybean meal (SBM) on growth performance, carcass characteristics, gastrointestinal microbial populations, and intestinal morphology of broiler chickens. 2. CSM was fermented with Bacillus subtilis, Aspergillus niger and Aspergillus oryzae for 7 days. A total of 300 one-d-old male Ross 308 broiler chickens were used in a 42-d experiment in which the birds were randomly allotted to one of 5 dietary treatments (containing 0, 10 and 20 percent CSM or FCSM) in a completely randomised design...
April 11, 2017: British Poultry Science
M T Musundire, T E Halimani, M Chimonyo
1. The effects of age and sex on body weight, carcass traits, physical and chemical properties of breast muscle from chickens and helmeted guinea fowls managed under village free range conditions, were assessed in random sample of 48 guinea fowls and 48 chickens obtained from local markets. 2. Guinea fowls had higher body weight, hot carcass weight, cold dressed weight and breast weight than chickens. 3. Guinea fowls had more dry matter, protein and less fat than chickens. Ash content did not differ between guinea fowls and chickens...
April 10, 2017: British Poultry Science
M Zendehdel, F Sardari, S Hassanpour, M Rahnema, A Adeli, E Ghashghayi
1. Serotoninergic and adrenergic systems play crucial roles in feed intake regulation in avians but there is no report on possible interactions among them. So, in this study, 5 experiments were designed to evaluate the interaction of central serotonergic and adrenergic systems on food intake regulation in 3 h food deprived (FD3) neonatal layer-type chickens. 2. In Experiment 1, chickens received intracerebroventricular (ICV) injection of control solution, serotonin (56.74 nmol), prazosin (α1 receptor antagonist, 10 nmol) and co-injection of serotonin plus prazosin...
March 31, 2017: British Poultry Science
Y Song, Y Li, S Zheng, W Dai, X Shen, Y Zhang, W Zhao, G Chang, Q Xu, G Chen
1. Highly palatable and nutritious meat products can be produced through dietary interventions. Previous studies have shown that forage feeding has a significant impact on the growth performance and nutrition of cattle in various regions, but whether the same effects can be induced in geese remains unclear. 2. A total of 360 Yangzhou goslings were divided according to body weight at 29 d old, assigned to one of 4 treatments and raised in separate pens (30 geese per pen, 3 replicates per treatment). The treatments applied were A) grazing, no grain supplemental diet, B) grazing, late grain supplemental diet (64 to 70 d), C) grazing, grain supplemental diet and D) confined, grain supplemental diet...
March 29, 2017: British Poultry Science
Z Abidin, A Khatoon, N Arooj, S Hussain, S Ali, A W Manzoor, M K Saleemi
1. The present study was designed to analyse ochratoxin A (OTA) in poultry feed samples (mixed types) along with different poultry feed ingredients collected from different farms and market of Lahore, Pakistan. 2. The whole year (2012-2013) was divided into three sub-periods depending upon environmental conditions, that is, July-October (hot and humid), November-February (winter) and March-June (moderate). During each sub-period 120 samples were collected for each feed and each ingredient constituting a total of 840 samples (120x7 of feed and feed ingredients in each sub-period)...
March 23, 2017: British Poultry Science
J M Carmona, C J Lopez-Bote, A Daza, A I Rey
1. This work aims to quantify changes in fatty acid profile, melting point, abdominal fat accumulation and 2-thiobarbituric acid-reactive substances production depending on dietary fat source and age at slaughter, and to estimate the optimal date for the change from an unsaturated fat to a saturated fat diet or vice versa. 2. Treatments established were (1) birds fed 8% tallow from 21 to 49 d (TTT); (2) birds fed 8% tallow from 21 to 37 d and 8% sunflower oil from d 38 to 49 (TSS); (3) birds fed 8% sunflower oil from 21 to 37 d and 8% tallow from d 38 to 49 (STT); (4) birds fed 8% sunflower oil from 21 to 41 d and 8% tallow from d 42 to 49 (SST); (5) birds fed 8% sunflower oil from 21 to 49 d (SSS)...
March 23, 2017: British Poultry Science
R Mañes-Lázaro, P M Van Diemen, C Pin, M J Mayer, M P Stevens, A Narbad
1. Campylobacter jejuni is the most common bacterial cause of human foodborne gastroenteritis in the world largely from contaminated poultry meat. New control measures to reduce or eliminate this pathogen from the animal gastrointestinal tract are urgently required, and the use of probiotics as competitive exclusion agents is a promising biocontrol measure to reduce C. jejuni in the food chain. 2. In this study, we assessed the potential of Lactobacillus johnsonii FI9785, which has shown efficacy against Clostridium perfringens, to combat C...
March 20, 2017: British Poultry Science
M F Giersberg, N Kemper, J Hartung, L Schrader, B Spindler
1. Specific legal requirements for keeping pullets are not available in the European Union. However, two of the most important rearing factors for pullets are sufficient perching and feeder space. Both factors represent horizontal space dimensions which derive from the body width of the birds. 2. The body width of two strains of layer pullets (brown (BL) and white (WL) layer pullets) based on the measurement of distances in digital images was conducted on front-view digital photographs of BL and WL pullets taken at 8, 12 and 19 weeks of life...
March 20, 2017: British Poultry Science
T J Rieger, C T de Oliveira, J Q Pereira, A Brandelli, D J Daroit
1. Feathers are recalcitrant protein-rich wastes produced in huge amounts by poultry processing for meat production. Hence, feather bioconversion and protease production by Bacillus sp. CL18 were investigated. 2. Bacillus sp. CL18 demonstrated a remarkable feather-degrading potential. Through cultivations on feather broth (10 g l(-1) feathers), 94.5% ± 3% of whole feathers were degraded after 4 d. Increases in soluble protein contents were observed and protease production was maximal also at d 4. This strain produced diverse proteolytic enzymes during growth...
March 17, 2017: British Poultry Science
J Yoo, Y J Yi, S S Wickramasuriya, E Kim, T K Shin, H M Cho, N Kim, J M Heo
1. A dose-response experiment was conducted with male Korean native ducklings (KND) to evaluate the total sulphur amino acid (TSAA) requirement from hatch to 21 d of age. 2. A completely randomised design with 7 dietary TSAA concentrations (0.62%, 0.65%, 0.68%, 0.71%, 0.74%, 0.77% and 0.80%) were used with 6 replications per treatment. 3. Body weight (BW) and feed intake were measured weekly to calculate average daily gain (ADG), average daily feed intake (ADFI) and feed conversion ratio (FCR). One duckling per pen (n = 6) was killed by cervical dislocation to weigh empty body and drumsticks at the conclusion of experiment...
March 17, 2017: British Poultry Science
Z Tao, C Zhu, W Song, W Xu, S Zhang, H Liu, H Li
1. The aim of this study was to describe the role of Nucleotide-binding oligomerization domain-containing protein 1 (NOD1) receptor signalling in chicken. 2. Tissue-specific expression analysis of NOD1, receptor-interacting serine-threonine kinase 2 (RIPK2), nuclear factor kappa B (NF-κB) and mitogen-activated protein kinase 11 (MAPK11 or p38) by quantitative real-time PCR (qRT-PCR) revealed their wide distribution in various organs and tissues. 3. Salmonella pullorum infection activated NOD1 receptor signalling in vivo and in vitro, resulting in significant induction of downstream signalling molecules RIPK2, NF-κB/p65, MAPK11/p38 and the effector molecules IL-1b and IL-8...
March 17, 2017: British Poultry Science
É Gocsik, A M Silvera, H Hansson, H W Saatkamp, H J Blokhuis
1. The present study was designed firstly to explore the potential economic benefits of adopting management practices to reduce lameness in broiler farms, and secondly to explore farmers' possible perceptions of this potential in the Swedish context. 2. The likely financial effects were addressed using a normative economic model, whereas a questionnaire based survey was used to obtain in-depth knowledge about the perceptions of a group of broiler farmers in Sweden. 3. Results suggest that within the Swedish context there is potential to reduce lameness, to thereby improve animal welfare, and to simultaneously increase economic performance...
March 15, 2017: British Poultry Science
B Poźniak, U Pasławska, K Motykiewicz-Pers, M Świtała
1. This experiment was designed to determine if the pharmacokinetics of amoxicillin (AMO) was affected by rapid growth or the acute phase reaction induced by intravenous (i.v.) injection of E. coli lipopolysaccharide (LPS). 2. Turkeys of 2.0, 5.5 and 12.0 kg were administered i.v. or orally with AMO sodium at the dose of 15 mg/kg. One group of turkeys (5.7 kg) was treated with LPS 1 h prior to i.v. AMO administration. Plasma drug concentrations were determined using high-performance liquid chromatography and pharmacokinetic parameters were calculated using a non-compartmental model...
March 14, 2017: British Poultry Science
S A Lee, J Dunne, T Mottram, M R Bedford
In the current study, a novel capsule technique was used to capture real-time pH readings from the gizzard over several hours, in response to different dietary treatments. The first experiment was a preliminary study into capsule administration and pH recordings using 9 male Ross 308 broilers from 20 d. In the second experiment, broilers (576) were fed in 2 phases (0-21 d and 21-42 d) with 4 treatment groups; low and adequate Ca and AvP diets with and without Quantum Blue phytase (1500 FTU/kg). Capsules were administered to 8 birds from each treatment group, pre and post diet phase change, with readings captured over a 2...
February 15, 2017: British Poultry Science
K Kanakri, J Carragher, R Hughes, B Muhlhausler, R Gibson
1. This study aimed to determine the minimal duration required for feeding male broilers (Cobb 500) with a flaxseed oil diet while still retaining long chain omega-3 polyunsaturated fatty acid (n-3 LCPUFA) accumulation in the meat at a desirable level. 2. Three groups of broilers (60 each) were fed on a 3% flaxseed oil (high α-linolenic acid (ALA)) diet for either 6, 4 or 2 weeks prior to slaughter. During the remaining time they were maintained on a 3% macadamia oil (low ALA) diet. A fourth group (Control, n=60) was fed on a commercial diet for 6 weeks...
February 15, 2017: British Poultry Science
A R Da Silva Oliveira, V P Lund, J P Christensen, L R Nielsen
1. The performance of the scoring in the Danish footpad dermatitis (FPD) surveillance system was evaluated by determining inter-rater agreement in visual inspection of FPD in broilers between two independent raters (R1 and R2) and the official scoring at a Danish slaughterhouse. FPD scores were evaluated in 1599 chicken feet. The two raters and the slaughterhouse scored equal proportions of score 0. So did R1 and R2 when assessing scores 1 and the more severe lesion score 2, whereas the slaughterhouse scored a markedly higher proportion of score 1 and a lower proportion of score 2...
February 15, 2017: British Poultry Science
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April 2017: British Poultry Science
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April 2017: British Poultry Science
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