journal
https://read.qxmd.com/read/38166582/antiviral-effect-of-palmatine-against-infectious-bronchitis-virus-through-regulation-of-nf-%C3%AE%C2%BAb-irf7-jak-stat-signalling-pathway-and-apoptosis
#21
JOURNAL ARTICLE
W Zhang, Y Chen, F Yang, H Zhang, T Su, J Wang, Y Zhang, X Song
1. Infectious bronchitis virus (IBV), a gamma-coronavirus, can infect chickens of all ages and leads to an acute contact respiratory infection. This study evaluated the anti-viral activity of palmatine, a natural non-flavonoid alkaloid, against IBV in chicken embryo kidney (CEK) cells.2. The half toxic concentration (CC50 ) of palmatine was 672.92 μM, the half inhibitory concentration (IC50 ) of palmatine against IBV was 7.76 μM and the selection index (SI) was 86.74.3. Mode of action assay showed that palmatine was able to directly inactivate IBV and inhibited the adsorption, penetration and intracellular replication of IBV...
January 3, 2024: British Poultry Science
https://read.qxmd.com/read/38053490/use-of-wheat-dilution-to-improve-digestive-function-in-broilers-application-in-low-protein-diets
#22
JOURNAL ARTICLE
M Naeem, E J Burton, D V Scholey, A Alkhtib, S Broadberry
1. This study evaluated the effect of wheat dilution increasing in particle size in low crude protein diets on growth performance, digestive tract, nitrogen efficiency and litter quality in broiler chickens.2. Ross 308 male broiler chicks ( n  = 336) were allocated to one of four dietary treatments (each with seven pens, 12 chicks per pen); Control (CON; commercial pellet diet with standard crude protein, CP: 22.50%), W578 (CON +20% wheat of geometric mean diameter (GMD) of 578 µm; CP:20...
December 6, 2023: British Poultry Science
https://read.qxmd.com/read/38047715/effect-of-dietary-concentrations-of-metabolisable-energy-and-crude-protein-on-the-performance-and-behavior-of-ducks
#23
JOURNAL ARTICLE
C I Lim, H J Choo, K N Heo, H K Kim, M R Hassan, S Sulatana, I M Whiting, S C Mansbridge, V R Pirgozliev
1. The study evaluated the effect of dietary metabolisable energy (ME) content and crude protein (CP) level on the growth performance and behaviour of ducks.2. A total of 720, Cherry Valley ducks were allocated to 36 pens in groups of 20 birds. For the initial period, from 1 to 21 d age, six diets, containing a standard (SME), low (LME) and high (HME) ME of 12.14, 11.93 and 12.35 MJ/kg, and standard (SCP) or high (HCP) CP contents of 210 or 220 g/kg diet, respectively, were mixed. For the period from 22 to 42 d age, the diets contained ME of 12...
December 4, 2023: British Poultry Science
https://read.qxmd.com/read/38038674/efficiency-of-natural-oils-as-alternative-adjuvants-to-mineral-oils-in-inactivated-avian-influenza-vaccine-formulation
#24
JOURNAL ARTICLE
A F Abdelkhalek, A Kayed, Y Moatasim, M El Sayes, R El-Shesheny, A A Khalil, A El-Deeb, H A Hussein, A A El-Sanousi, G Kayali, M A Ali, A Kandeil
The effectiveness of inactivated vaccines depends on selecting the suitable adjuvant for vaccine formulation. The potency of vaccines with low antigen content can be improved with the appropriate adjuvant. This could allow production of more doses and lower the production cost.This study evaluated the efficiency of vaccines prepared using oil extracted from natural sources including argan oil, almond oil, sesame seed oil, pumpkin oil, cactus oil and black seed oil as alternative adjuvants for improving the protection capacity of inactivated influenza virus vaccine as compared to commonly used mineral oils...
December 1, 2023: British Poultry Science
https://read.qxmd.com/read/38018666/the-pathogenicity-and-immune-effects-of-different-generations-of-mycoplasma-synoviae-on-chicken-embryos
#25
JOURNAL ARTICLE
X Ma, L Wang, J Li, Y Guo, S He
Mycoplasma synoviae (MS) is the primary causative agent of synovitis in avian species. In order to investigate the pathogenicity and immunological responses associated with MS in specific pathogen-free chicken embryos, a series of generations (F1, F95, F120, F160 and F200) of MS were introduced into 7-day-old SPF chicken embryos and subsequent mortality rates were recorded and analysed.Reverse transcription-quantitative polymerase chain reaction was performed to detect expression of heat shock proteins HSP27, HSP40, HSP60, HSP70 and HSP90 and inflammatory factors interleukin (IL)-1β, caspase-1 and IL-18 in the tracheal tissue...
November 29, 2023: British Poultry Science
https://read.qxmd.com/read/38018563/effects-of-monensin-sodium-and-live-attenuated-oocyst-vaccine-as-coccidiosis-management-programs-on-productive-performance-bone-quality-and-mineral-utilisation-in-broiler-chickens
#26
JOURNAL ARTICLE
M Bozkurt, N N Savaş
The following study was conducted to evaluate the influence of coccidiosis vaccine-induced metabolic stress on the utilisation of minerals in broilers. The starter, grower and finisher phase diets, including macro- and micro minerals at the recommended levels for the breed standards, were fed to chickens between 1 and 39 d of age.A total of 486, one-d-old male broilers were randomly distributed into three coccidiosis management programs (CMP) with six replications each. The CMP comprised: monensin sodium (MON), coccidiosis vaccine (VAC), not treated with MON or VAC (CNT)...
November 29, 2023: British Poultry Science
https://read.qxmd.com/read/38018517/sperm-replacement-in-sperm-storage-tubules-causes-last-male-sperm-precedence-in-chickens
#27
JOURNAL ARTICLE
M Matsuzaki, S Mizushima, M Tsudzuki, T Maeda, T Sasanami
1. This study elucidated the last-male sperm precedence (LMSP) mechanism in chickens by examining replacement in storage tubules (SSTs) after multiple artificial inseminations (AI) and the effects of seminal plasma (SP) and male breed on sperm replacement in SSTs.2. Hens were artificially inseminated with fluorescent dye-labelled spermatozoa from White Leghorn (WL) chickens. Secondary AI was conducted 3 d later with sperm labelled with different nuclear fluorescent dye. Percentage of first and second inseminated sperm in SSTs and their logarithmic odds were calculated...
November 29, 2023: British Poultry Science
https://read.qxmd.com/read/37955138/holo-analysis-of-the-effects-of-xylo-oligosaccharides-on-broiler-chicken-performance
#28
JOURNAL ARTICLE
N K Morgan, E Kim, G González-Ortiz
Xylo-oligosaccharides (XOS) stimulate proliferation of beneficial bacteria in the gastrointestinal tract of broiler chickens. This results in enhanced utilisation of dietary non-starch polysaccharides and increased production of valuable short-chain fatty acids. However, these positive effects do not always translate into improved bird productive performance, with inconsistent performance responses observed between bird trials.A holo-analysis was conducted to determine the effects of supplementing XOS into broiler diets on bird feed intake, body weight gain, feed conversion and mortality...
November 13, 2023: British Poultry Science
https://read.qxmd.com/read/37921562/effect-of-25-hydroxycholecalciferol-supplementation-with-different-dietary-available-phosphorus-levels-for-broilers
#29
JOURNAL ARTICLE
L S Bassi, F A Moreno, C C S Martins, R F Sens, C A Lozano-Poveda, A Maiorka
Based on the hypothesis that 25-hydroxycholechalciferol (25-OH-D3 ) inclusion would optimise dietary mineral digestibility and ameliorate growth performance and bone mineralisation in available phosphorus (AvP) deficient-fed broilers, a trial was conducted to evaluate its effect in diets with different levels of AvP.Broilers aged 1 to 21 d were randomly assigned one of eight treatments, consisting of four dietary levels of AvP (0.45, 0.42, 0.39, and 0.36%) and with or without supplementation with 25-OH-D3 at 69 μg/kg of feed...
November 3, 2023: British Poultry Science
https://read.qxmd.com/read/37861269/growth-not-digestibility-in-chickens-receiving-reduced-protein-diets-is-independent-of-non-specific-amino-nitrogen-sources-when-the-essential-to-total-nitrogen-ratio-is-constant-and-lower-than-50
#30
JOURNAL ARTICLE
O A Olukosi, Y Lin
A 21 d experiment was conducted to investigate whether growth performance and coefficients of amino acids digestibility (cAID) in broilers receiving reduced-protein diets supplemented with different non-essential amino acids (NEAA) were dependent on supplemented NEAA in diets with the same essential-to-total N (eN-to-tN) ratio kept at < 50%.The experiment used 240 male broiler chicks, allocated to eight treatments with six pen replicates per treatment, and five chicks per replicate. The diets were either adequate in protein diet (PC), reduced protein (NC) diet or the NC diet supplemented with Gly, Gln, Ser, Ala, Gly + Ser or Ala + Ser...
October 20, 2023: British Poultry Science
https://read.qxmd.com/read/37861101/a-comparative-study-on-the-effect-of-limestone-particle-size-on-performance-ileal-digestibility-of-calcium-and-phosphorus-and-bone-characteristics-in-broilers-and-pullets
#31
JOURNAL ARTICLE
A R Jafari Arvari, S Mirzaie Goudarzi, M R Abdollahi, M Sadeghi
1. The effects of limestone particle size on growth performance, gastrointestinal tract (GIT) traits, ileal morphology, duodenal gene expression of calbindin, apparent ileal digestibility coefficients (AIDC) of calcium (Ca) and phosphorus (P) and tibia characteristics in broilers and pullets were assessed in broilers and pullets. These birds have different growth rates and likely different responses to parameters, such as particle size.2. A total of 240 chicks aged one day, 120 Ross 308 female broilers, and 120 Hy-Line pullets were allocated randomly into four treatments in a 2 × 2 factorial arrangement with two bird types (broilers vs ...
October 20, 2023: British Poultry Science
https://read.qxmd.com/read/37807899/effects-of-genetic-selection-for-fast-growth-on-the-development-of-wooden-breast-myopathy-in-broilers
#32
JOURNAL ARTICLE
M Emambu, A Haron, D Lokshtanov, D Shinder, S Druyan
This study investigated the physiological and molecular mechanisms leading to wooden breast (WB) by comparing growth parameters, oxygen consumption rate, thyroid hormone and gene expression patterns in fast- versus slow-growing broiler lines (Cobb500 and L1986, respectively).WB was observed in Cobb500 broilers only and was first diagnosed on d 21 post-hatch. Compared to the slow-growing L1986, Cobb500 showed a significantly higher growth rate, relative breast weight, breast thickness, meat pH and water-retention capacity (drip loss)...
October 9, 2023: British Poultry Science
https://read.qxmd.com/read/37807894/gga-let-7a-3p-inhibits-the-proliferation-and-differentiation-of-chicken-intramuscular-preadipocytes
#33
JOURNAL ARTICLE
P Ren, M Chen, Q Liu, J Wu, R Li, Z Lin, J Li
1. Intramuscular fat (IMF) is a key parameter for chicken meat quality. IMF deposition is driven by genetic, nutritional and management factors, with genetics being the determining factor. Previous whole transcriptome sequencing revealed that mRNA gga-let-7a-3p was related to lipid metabolism in breast muscle. This study further investigated the potential role of gga-let-7a-3p in IMF deposition.2. The mimic and inhibitor of gga-let-7a-3p were individually transfected into chicken intramuscular preadipocytes...
October 9, 2023: British Poultry Science
https://read.qxmd.com/read/37782109/n-acetyl-l-cysteine-improves-performance-of-chronic-cyclic-heat-stressed-finisher-broilers-but-has-no-effect-on-tissue-glutathione-levels
#34
JOURNAL ARTICLE
H Pertiwi, M Majdeddin, J Degroote, H Zhang, J Michiels
It was hypothesised that dietary N-acetyl-L-cysteine (NAC) in feed, as a source of cysteine, could improve the performance of heat-stressed finisher broilers by fostering glutathione (GSH) synthesis. GSH is the most abundant intracellular antioxidant which the sulphur amino acid cysteine is rate limiting for its synthesisIn the first experiment, four levels of NAC: 0, 500, 1000 and 2000 mg/kg, were added to a diet with a suboptimal level of sulphur amino acids in the finisher phase. In the second experiment NAC was compared to other sulphur amino acid sources at equal molar amounts of digestible sulphur amino acids...
October 2, 2023: British Poultry Science
https://read.qxmd.com/read/37772759/effect-of-quercetin-on-granulosa-cells-development-from-hierarchical-follicles-in-chicken
#35
JOURNAL ARTICLE
T Li, Y Feng, Z Chen, Q Hou, B R Serrano, A R Barcenas, P Wu, W Zhao, M Shen
1. The bioflavonoid quercetin is a biologically active component, but its functional regulation of granulosa cells (GCs) during chicken follicular development is little studied. To investigate the effect of quercetin on follicular development in laying hens, an in vitro study was conducted on granulosa cells from hierarchical follicles treated with quercetin.2. The effect of quercetin on cell activity, proliferation and apoptosis of granulosa cells was detected by CCK-8, EdU and apoptosis assays. The effect on progesterone secretion from granulosa cells was investigated by enzyme-linked immunosorbent assay (ELISA)...
September 29, 2023: British Poultry Science
https://read.qxmd.com/read/37772752/the-interaction-of-chia-mucilage-based-edible-film-and-transglutaminase-enzyme-on-spent-hen-meat-nuggets
#36
REVIEW
I Çelik, C Sarıçoban
The aim of this study was to utilise low-value spent hen meat and investigate the possibility of using chia ( Salvia hispanica L.) as a mucilage-based edible film to prevent loss of quality in meat products. For this purpose, spent hen meat was reconstructed with the addition of transglutaminase (TGase) at different concentrations (0.5, 1 and 1.5%) and used to produce nuggets. These were covered with chia mucilage-based film and kept at 4°C for 7 d.The addition of transglutaminase and coating with film decreased meat pH ( P  < 0...
September 29, 2023: British Poultry Science
https://read.qxmd.com/read/37747291/influence-of-two-levels-of-phytic-acid-and-particle-size-of-oyster-shell-on-the-performance-calcium-digestibility-gastrointestinal-ph-and-bone-traits-in-broilers
#37
JOURNAL ARTICLE
H K Zanu, M Iddrisu, B G Fosu, H K Ketemepi, M R Bedford
Phytic acid (PA) is an antinutritional factor in poultry diets. The effect of high dietary PA in chicken diets might be exacerbated when the particle size of oyster shell (OS) is too fine. Thus, this study investigated the hypothesis that high PA with fine OS particle size would impair growth in broilers.Two hundred and eighty Cobb 500 broilers were assigned to four diets in a 2 × 2 factorial arrangement in a CRD. The factors were PA (low or high) and OS particle size (fine or coarse) in starter, grower and finisher diets...
September 25, 2023: British Poultry Science
https://read.qxmd.com/read/37735991/identification-and-functional-analysis-of-circripk2-in-lipopolysaccharide-induced-chicken-macrophages
#38
JOURNAL ARTICLE
J Tan, J Ge, P Sahaer, H Li, H Sun
1. It was hypothesised that a circular RIPK2 ( circRIPK2 ) highly expressed in chicken macrophages plays an important role during bacterial infection.2. After PCR amplification, Sanger sequencing and RNase R exonuclease treatment of chicken macrophages, it was found that circRIPK2 was a stable circular RNA, which was formed by reverse splicing of exons 4 to 9 of the RIPK2 .3. The circRIPK2 can promote the lipopolysaccharide (LPS) induced cellular injury by reducing cell viability and increasing the expression of pro-inflammatory cytokines and apoptosis genes...
September 22, 2023: British Poultry Science
https://read.qxmd.com/read/37706266/sunflower-and-rapeseed-meal-as-alternative-feed-materials-to-soybean-meal-for-sustainable-egg-production-using-aged-laying-hens
#39
JOURNAL ARTICLE
V R Pirgozliev, I M Whiting, S C Mansbridge, S P Rose
1. This study assessed the impact of replacing two thirds of a soybean meal (SBM) based diet with an alternative protein (AP) based diet (sunflower and rapeseed meal), when fed to end of production Hy-Line Brown laying hens.2. Diets were fed in seven cages, each containing six birds aged from 75 to 83 weeks old. Measured variables included bird performance, egg production, quality variables of fresh eggs, total tract digestibility of dry matter (DMD), neutral detergent fibre (NDFD), fat (FD), and nitrogen corrected apparent metabolisable energy (AMEn)...
September 14, 2023: British Poultry Science
https://read.qxmd.com/read/37697900/effects-of-oleanolic-acid-on-acute-liver-injury-triggered-by-lipopolysaccharide-in-broiler-chickens
#40
JOURNAL ARTICLE
W Hong, W Fu, Q Zhao, C Xue, W Cai, N Dong, A Shan
Infectious injury caused by lipopolysaccharide (LPS), a metabolite of gram-negative bacteria, can induce stress responses in animals and is a significant cause of morbidity and mortality in young birds. The purpose of this study was to investigate the effects of dietary supplementation with oleanolic acid (OA) on acute liver injury in broiler chickens challenged with LPS.In total, 120 broiler chickens were randomly divided into six groups and fed a basal diet containing 0, 50, 100, or 200 mg/kg OA or 100 mg/kg aureomycin...
September 12, 2023: British Poultry Science
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