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British Poultry Science

A A A Abdel-Wareth, H A Hassan, W Abdelrahman, Z S H Ismail, R A M Ali, E A Ahmed, J Lohakare
1. Two separate experiments were conducted to evaluate the efficacy of either prebiotic or synbiotic on growth performance, carcass yield, organs weights, and serum metabolic profile of broilers under hot climatic conditions. 2. In experiment 1, one hundred and fifty 1-day old Ross 308 male broiler chickens were fed dietary synbiotic (Biomin® IMBO, 0, 1 or 1.5 g kg -1 of the starter diets and 0, 0.5 or 0.75 g kg -1 of the grower diets) for six weeks. In experiment 2, one hundred and fifty 1-day old Ross 308 male broiler chickens were fed dietary prebiotic (Mannan oligosaccharide 0 g, 0...
September 10, 2018: British Poultry Science
Seyed Abdollah Hosseini, Amir Meimandipour
1. The use of chitosan nanoparticles for the entrapment of active components has gained considerable interest in food and pharmaceutical industries due to its mucous adhesiveness, non-toxicity, biocompatibility and biodegradability. 2. This study aimed to investigate the usefulness of feeding encapsulated thyme essential oil (E-TEO) on performance, blood parameters, immunity and ileal microflora in broilers. 3. Chitosan nanoparticles (CNPs) were prepared by using ionotropic gelation and structurally characterised by dynamic light scattering; scanning electron microscope and Fourier transform infrared spectroscopy...
September 10, 2018: British Poultry Science
Reza Akbari Moghaddam Kakhki, Reza Bakhshalinejad, Evangelos Zoidis
1. A total of 1440 one-day-old Ross 308 male broilers were allocated to twelve dietary treatments to evaluate dose-dependent effects of α-tocopheryl acetate (α-TOA) combined with zinc (Zn) supplementation on humoral and cellular immune responses, antioxidant enzymes, serum and hepatic contents of vitamins and minerals in broilers. 2. Three levels of supplemental α-TOA (0, 150 and 300 mg/kg) and four levels of Zn (0, 100, 200 and 400 mg/kg) were combined as a completely randomised design as a 3×4 factorial arrangement...
September 10, 2018: British Poultry Science
I Dunn, C Whitehead
No abstract text is available yet for this article.
September 7, 2018: British Poultry Science
D Currie, M Green, O A Dufailu, P Matthaios, P Soultanas, E McCartney, H Lester, L Van Den Eede, J Apajalahti, J Mahdavi
1. The objective of this study was to evaluate the effect of ferric tyrosine on the reduction of Campylobacter spp. and zootechnical performance in broilers exposed to Campylobacter spp. using a natural challenge model to simulate commercial conditions. Additionally, the minimum inhibitory concentrations (MICs) of ferric tyrosine against common enteropathogens were evaluated. 2. At the start of the trial, 840 healthy male 1-d-old birds (Ross 308) were randomly allocated to 6 replicate pens of 35 birds each and fed diets containing different concentrations of ferric tyrosine (0, 0...
September 7, 2018: British Poultry Science
J T Paiva, Marcos Deon Vilela de Resende, R T Resende, H R Oliveira, H T Silva, G C Caetano, A A Calderano, P S Lopes, J M S Viana, F F Silva
The aim of the following experiment was to estimate transgenerational epigenetic variance for egg quality traits using genealogical and phenotypic information in meat-type quail. Measured traits included egg length (EL) and width (EWD), albumen weight (AW), shell weight (SW), yolk weight (YW), and egg weight (EW). A total of 391 birds were evaluated for egg quality by collecting a sample of one egg per bird, during three consecutive days, starting on the 14th day of production. Analyses were performed using mixed models including the random epigenetic effect...
August 24, 2018: British Poultry Science
Tao Zhang, Huan Liu, Li-Kai Yang, Ya-Jun Yin, Hong-Zhao Lu, Ling Wang
1. Lueyang black-bone chicken is a specific strain local to China. Due to lack of conservation breeding schemes,the characteristics of Lueyang black-bone chicken are disappearing. 2. In this study, the complete mitochondrial DNA of China Lueyang black-bone chicken was analysed, and two phylogenetic trees of Lueyang black-bone chickens based on D-loop sequences and the mitochondrial genome were constructed. 3. The complete mitochondrial genome of Lueyang black-bone chickens is 16,784bp in size, consisting of 22 transfer RNA genes, two ribosomal RNA genes, 13 protein-coding genes, and one non-coding control region...
August 21, 2018: British Poultry Science
F De C Tavernari, L F Roza, D Surek, C Sordi, M L B D Silva, L F T Albino, M J Migliorini, D Paiano, M M Boiago
1. This work investigates the apparent metabolisable energy (AME), its nitrogen-corrected form (AMEn) and amino acid (AA) digestibility coefficients of the microalgae Spirulina platensis as an ingredient in broiler chicken diets. 2. One group of birds was fed with a basal control diet (BD), and another was fed with a test diet composed of the BD with the addition of the microalgae at a proportion of 200 g/kg. AME and AMEn were assessed by total excreta collection and indigestibility analysis using acid-insoluble ash (AIA) as a marker...
August 13, 2018: British Poultry Science
P Konieczka, K Nowicka, M Madar, M Taciak, S Smulikowska
1. The effects of supplementation of broiler chicken diets with pea meal, carbohydrase enzymes and a probiotic were investigated for potential performance improvement. 2. Raw or extruded pea meal (cv Model, grown in Poland) was included in a wheat-soybean meal-based diet at 250 g/kg. The diets were unsupplemented (control) or supplemented with either carbohydrase enzymes (200 U/kg xylanase and 10 U/kg β-glucanase in feed) or a probiotic (Bacillus subtilis), or both. The diets were fed to Ross 308 broilers aged nine to 28 days...
August 2, 2018: British Poultry Science
S A Lee, J Dunne, E Febery, C A Brearley, T Mottram, M R Bedford
1. The current study was conducted to evaluate the influence of high phytase doses and xylanase, individually and in combination, on performance, blood inositol and real-time gastric pH in broilers fed wheat-based diets. 2. In a 42-d experiment, a total of 576 male Ross 308 broiler chicks were allocated to 4 dietary treatments. Treatments consisted of a 2 × 2 factorial arrangement, with 500 or 2500 FTU/kg phytase and 0 or 16 000 BXU/kg xylanase, fed in two phases (starter 0-21; grower 21-42 d). Heidelberg pH capsules were administered to 8 birds from each treatment group, pre- and post-diet phase change, with readings captured over a 5...
August 2, 2018: British Poultry Science
Ding-Ping Bai, Xu Wu, Li-Ming Lan, Yue-Ming Wan, Mei-Jiao Yan, SenYang Lian, Ang Li
Osteopontin (OPN) is a highly phosphorylated acidic glycoprotein that plays a crucial role in eggshell formation. In this study, an 893-bp cDNA sequence of the OPN gene, which encodes 180 amino acids, was obtained. Polymorphisms of the OPN gene were analysed with DNA sequencing and polymerase chain reaction-single-strand conformation polymorphism methods in two Chinese domestic laying ducks (Jingding n=100, Youxian n=478, respectively). One polymorphism was identified in exon 7 (NM_ 004676534.1:c.267T>C) of the OPN gene, with three genotypes: TT, TC, and CC...
July 31, 2018: British Poultry Science
R Hulankova, G Borilova, F A A Abdullah, H Buchtova
1. The aim of this study was to assess the incidence of pathogens and the development of spoilage microflora in organic chicken meat originating from a small poultry slaughterhouse and stored for 14 days at 2°C aerobically (control) or in one of two modified atmosphere packaging systems (MAP1: 80% O2 , 20% CO2 and MAP2: 70% N2 , 30% CO2 ). 2. Campylobacter jejuni survived well during storage; and was found on the skin in 95% of samples (262/276). 3. In general, both the skin and meat samples showed a good initial microbiological quality with total viable counts of less than 3 log cfu/g in meat and approximately 5 log cfu/g on skin...
July 31, 2018: British Poultry Science
M Aalaei, A Khatibjoo, M Zaghari, K Taherpour, M Akbari Gharaei, M Soltani
1. This study was conducted to investigate the effect of multi-strain probiotic (containing Lactobacillus acidophilus 2.5 × 107 cfu/g, Lactobacillus casei 2.5 × 107 cfu/g, Bifidobacterium thermophilum 2.5 × 107 cfu/g and Enterococcus faecium 2.5 × 107 cfu/g) and single-strain probiotic (Pediococcus acidilactici 1 × 1010 cfu/g) on broiler breeder performance and gastrointestinal health. 2. A completely randomised trial was conducted using 300 broiler breeder hens (Ross 308) aged 51 weeks old which were randomly allocated to 1 of 5 dietary treatments with 6 replicates per treatment in a 10 week trial...
July 31, 2018: British Poultry Science
M Torki, D Schokker, M Duijster-Lensing, M M Van Krimpen
1. An experiment was conducted to evaluate the effects of technical feed ingredients between 14 and 28 d of age on performance and health status of broilers (d 14-35) fed diets with a high inclusion rate of rapeseed meal as a nutritional challenge. It was hypothesized that the feed ingredients would improve health status related parameters. 2. A total of 1008 one-day-old male Ross 308 chicks were distributed over 36 floor pens and allocated to one of six iso-caloric (AMEN 13 MJ/kg) growing diets (d 15-28): a control and five test diets supplemented with quercetin (400 mg/kg), oat hulls (50 g/kg), β-glucan (100 mg/kg), lysozyme (40 mg/kg) or fish oil ω-3 fatty acids (40 g/kg), with six replicate pens per treatment...
July 31, 2018: British Poultry Science
Michael R Bedford
1. Enzymes have been used commercially for nearly 40 years and save significant costs through sparing of expensive nutrients but the mechanism by which this is achieved is still debated. 2. The research focused on non-starch polysaccharidase (NSPase) enzymes is used as an example of where greater progress could have been made if the details of the work had been described more fully and the analysis of the data generated had been broader in scope and more critical. 3. Lack of standardisation of the details presented in the materials and methods has been identified as a significant barrier to meaningful retrospective analysis and thus limits advances in the understanding of the mode of action of these enzymes...
July 27, 2018: British Poultry Science
Jing Li, Zhiyong Zhao, Decai Xiang, Bin Zhang, Tiao Ning, Tiancai Duan, Jun Rao, Liuping Yang, Xingwang Zhang, Fang Xiong
Adipose differentiation related protein (ADFP), fatty acid transport protein 1 (FATP1), and apolipoprotein B (APOB) are suspected to play an important role in determining intramuscular fat and in overall meat quality. Yunnan's top six famous chicken breeds (the Daweishan Mini, Yanjin Black-bone, Chahua, Wuding, Wuliangshan Black-bone and Piao chicken) are known for the high quality of their meat, but little is known about their expression of these three genes. 3. The present study aimed to examine the ADFP, FATP1, and APOB genes in different tissues of these six breeds at different development stages...
July 13, 2018: British Poultry Science
A E Taylor, M R Bedford, S C Pace, H M Miller
1. The aim of this study was to evaluate the effects of phytase and xylanase and their interaction on laying hen performance, egg quality, phosphorus (P) digestibility, phytate breakdown, volatile fatty acid (VFA) production and peptide YY concentration. 2. Two hundred and forty hens were allocated to cages at 22 weeks of age based on a 3 × 2 arrangement with phytase (0, 300 or 1500 FTU/kg) and xylanase (0 or 12 000 BXU/kg) as factors. 3. Phytase increased hen-day production (P < 0.05), daily egg mass (P < 0...
July 10, 2018: British Poultry Science
H G Mao, H Y Cao, H H Liu, X Y Dong, N Y Xu, Z Z Yin
1. Adenylosuccinate lyase (ADSL) plays an important role in the synthesis of inosine monophosphate (IMP). In this trial, a total of 200 pigeons were sampled and slaughtered. Seven meat quality traits and eleven carcass traits were measured. DNA sequencing was used to detect nucleotide mutations, and associations between ADSL gene polymorphisms and meat quality and carcass traits were analysed. 2. Sequencing results showed that nine nucleotide mutations were found in the exons of the ADSL gene. All the mutations were synonymous except C13065G, which caused a change in amino acids (Ser to Arg)...
July 2, 2018: British Poultry Science
L Pardyak, A Kaminska, M Brzoskwinia, A Hejmej, M Kotula-Balak, J Jankowski, A Ciereszko, B Bilinska
1. To show hormonal differences between male turkeys with yellow semen syndrome (YSS) and white, normal semen (WNS), the expression of aromatase, oestrogen receptor α (ERα), and oestrogen receptor β (ERβ) as well as testosterone and oestradiol concentrations in YSS and WNS testes, epididymis, and ductus deferens were examined. 2. To measure gene expression levels of aromatase and oestrogen receptors (ERs), three complementary techniques (real-time PCR, Western blot, and immunohistochemistry) were used, whereas steroid hormone levels were determined radio-immunologically...
July 2, 2018: British Poultry Science
Lu Liu, Huanxian Cui, Maiqing Zheng, Guiping Zhao, Jie Wen
1. Lipid metabolism is an indispensable process in an organism, though little is known about the regulatory mechanisms of fat deposition in different types of adipose tissue. 2. The differentially expressed genes related to triglyceride (TG) metabolism between abdominal and intramuscular fat of Beijing-You chickens were investigated in this study. 3. TG content in abdominal fat (349.7 mg/g) was significantly higher (P<0.01) than in the breast and thigh (12.3 mg/g and 24.8 mg/g, respectively). 4. Using Agilent chicken gene expression profiling in adipose tissues between abdominal fat and muscle (breast and thigh), certain representative genes related to fatty acid metabolism, lipoprotein catabolism and esterification reactions were significantly up-regulated (P<0...
June 25, 2018: British Poultry Science
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