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Poultry Science

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https://www.readbyqxmd.com/read/28651355/evaluation-of-welfare-parameters-in-laying-hens-on-the-basis-of-a-bavarian-survey
#1
H Louton, S M Bergmann, E Rauch, C Liebers, S Reese, M H Erhard, C Hoeborn, A Schwarzer
Health issues like infestation with poultry red mite (Dermanyssus gallinae) and behavioral problems such as feather pecking and cannibalism are reported as current problems on laying hen farms. However, the epidemiological prevalence of these issues in Bavaria, Germany, is not known. The objective of the present survey was to determine the epidemiological prevalence of health and behavioral parameters and the management of hen farms in practice. The survey was sent to all laying hen farmers with more than 1,000 hens in Bavaria, Germany, and contained questions regarding flock management, behavior problems and health issues...
June 23, 2017: Poultry Science
https://www.readbyqxmd.com/read/28651342/emissions-of-volatile-odorous-metabolites-by-clostridium-perfringens-in-vitro-study-using-two-broth-cultures
#2
Nishchal K Sharma, Chuck Keerqin, Shu-Biao Wu, Mingan Choct, Robert A Swick
An in vitro study was carried out to investigate the volatile odorous metabolites produced by necrotic enteritis inducing Clostridium perfringens (Cp) type A field strain (EHE-NE18) cultured in two broth media (thioglycollate broth, brain heart infusion broth) at three levels (0, 103 cfu/mL, 106 cfu/mL) using 2 × 3 factorial arrangement of treatments, with each replicated three times. The culture media with and without Cp was freshly prepared on the day of measurement and the culture headspace concentration of odorants was measured using selected ion-flow tube mass spectrometry (SIFT-MS)...
June 23, 2017: Poultry Science
https://www.readbyqxmd.com/read/28645148/a-soft-environmental-control-effect-of-apatite-doped-with-mineral-traces-in-the-fowl-droppings
#3
M Minamisawa, T Taniai, S Yoshida
Fowl-dropping apatite (Ca10-z[PO4]6-z[OH]2-z) synthesized from carbonized, incinerated fowl droppings contains PO4 and OH groups that are partially substituted by CO32- ions. It shows stronger ion conductivity than commercially available hydroxyapatite in a wide range of temperatures from 23°C to 800°C. Fowl-dropping apatite readily adsorbs NO2 and SO2 gases and, without re-releasing these gases, slowly decomposes them at room temperature under sunlight via ultraviolet-visible (UV-Vis) irradiation. A limited amount of minerals and organics contained in fowl droppings causes light-induced activities in fowl-dropping apatite with a crystal structure that has a developed c face; this initiates excitation-induced atomic transfer on the solid surface derived from PO4 exposed on the c face, which then advances the decomposition reaction...
June 21, 2017: Poultry Science
https://www.readbyqxmd.com/read/28641395/effect-of-in-ovo-injection-of-corticotropin-releasing-hormone-on-the-timing-of-hatching-in-broiler-chickens
#4
Yugo Watanabe, Sylvia V H Grommen, Bert De Groef
In chicken embryos, intravenous injection of corticotropin-releasing hormone (CRH) causes the release of both corticosteroids and thyroid hormones. These hormones initiate and enhance the hatching process, raising the possibility that CRH treatment of the late chicken embryo could accelerate hatching and/or decrease the spread of hatching. We performed a series of exploratory tests to investigate whether in ovo delivery methods of CRH other than intravenous injection that are more practical in a commercial setting, affect hatching time in broilers...
June 21, 2017: Poultry Science
https://www.readbyqxmd.com/read/28641389/acute-tryptophan-depletion-the-first-method-validation-in-an-avian-species-gallus-gallus-domesticus
#5
Patrick Birkl, Joergen B Kjaer, William Szkotnicki, Paul Forsythe, Alexandra Harlander-Matauschek
Acute tryptophan depletion (ATD) is a valuable non-invasive nutritional tool in human and rodent research to study dysfunctions of the serotonergic system and related behavioral disorders. Serotonergic dysfunction is thought to be involved in the pathology of feather pecking behavior of laying hens, one of the most relevant welfare and production issues in modern intensive egg-production systems. ATD temporarily compromises the influx of tryptophan (TRP) across the blood brain barrier which reduces central availability of TRP, the substrate for serotonin (5-HT) synthesis...
June 21, 2017: Poultry Science
https://www.readbyqxmd.com/read/28637225/characteristics-of-escherichia-coli-isolated-from-broiler-chickens-with-colibacillosis-in-commercial-farms-from-a-common-hatchery
#6
H Ozaki, Y Matsuoka, E Nakagawa, T Murase
To investigate the epidemiologic aspects of colibacillosis in broiler chickens, 83 Escherichia coli isolates obtained from the pericarditis and perihepatitis lesions in broiler chickens from 4 commercial farms, 5 isolates recovered from 5 samples of yolk sac contents that were pooled from 25 emaciated chicks, and 4 fecal isolates obtained from a hatchery that supplied chicks to the 4 commercial farms mentioned above were genetically and bacteriologically characterized. Using pulsed-field gel electrophoresis (PFGE), a total of 92 isolates were classified into 33 pulsotypes...
June 20, 2017: Poultry Science
https://www.readbyqxmd.com/read/28637224/impact-of-a-macleaya-cordata-derived-alkaloid-extract-on-necrotic-enteritis-in-broilers
#7
G D Xue, S B Wu, M Choct, A Pastor, T Steiner, R A Swick
Necrotic enteritis (NE) causes significant economic losses in the broiler chicken industry, especially in birds raised without in-feed antibiotics. A standardized blend of plant-derived isoquinoline alkaloids (IQA) derived from Macleaya cordata has shown to have anti-inflammatory potency and promoted animal productivity. This study investigated the effects of IQA supplementation on broiler chickens under NE challenge. A 2 × 2 factorial arrangement of treatments was employed with factors: NE challenge (no or yes), and additives (no additive or IQA at 0...
June 20, 2017: Poultry Science
https://www.readbyqxmd.com/read/28637188/the-influence-of-whole-corn-feeding-method-during-the-finishing-stage-on-the-performance-of-overfed-mule-ducks
#8
J Arroyo, F Lavigne, L Fortun-Lamothe
The aim of this trial was to compare 2 feeding systems based on whole corn, a loose-mix and a free-choice feeding system, during the finishing stage on the performance of ducks. Five hundred sixteen day-old male mule ducks (Muscovy drake × Pekin duck) were divided into 3 groups that differed in the presentation of the diet they received between 58 and 88 d of age: a complete pelleted diet (Control (CON) group; AMEn 12.1 MJ/kg, CP 15.0%) containing 500 g of corn per kg; or whole corn (AMEn 13.9 MJ/kg, CP 7...
June 20, 2017: Poultry Science
https://www.readbyqxmd.com/read/28633498/thymol-as-natural-antioxidant-additive-for-poultry-feed-oxidative-stability-improvement
#9
A Luna, R C Lema-Alba, J S Dambolena, J A Zygadlo, M C Labaque, R H Marin
Antioxidant are regularly included in poultry feed as protection from deterioration during storage. Recently the interest for the use of natural phytochemicals in animal diets has been increased. Thymol (THY) has been proven to be an effective antioxidant for extending broiler meat quality during storage with similar action to the widely used butylated hydroxytoluene (BHT). This study evaluates whether THY can also have a protective effect on the feed mash by assessing its antioxidant potential and related changes in fatty acid (FA) balance...
June 17, 2017: Poultry Science
https://www.readbyqxmd.com/read/28633491/optimization-of-inactivated-h5n9-highly-pathogenic-avian-influenza-vaccine-and-inactivated-salmonella-enterica-serovar-typhimurium-vaccine-with-antigen-dose-and-prime-boost-regimen-in-domestic-ducks
#10
Seong-Su Yuk, Eredene-Ochir To, Jung-Hoon Kwon, Jin-Yong Noh, Woo-Tack Hong, Jei-Hyun Jeong, Gyeong-Bin Gwon, Chang-Seon Song
Owing to the increase in the number of diseases affecting ducks and the demand for food safety by consumers, vaccination has become one of the factors that influence duck meat productivity. The highly pathogenic avian influenza (HPAI) virus is one of the most prevalent and causes one of the most lethal diseases in domestic ducks, and Salmonella enterica serovar Typhimurium is a food-borne pathogen persistent in the domestic duck population. To better understand the optimal usage of HPAI and S. enterica serovar Typhimurium vaccines, we aimed to determine antigen dose, oil and gel adjuvant usage with prime-boost regimen, and vaccination age, inducing the best immune response in ducks, without an effect on body weight gain...
June 17, 2017: Poultry Science
https://www.readbyqxmd.com/read/28637324/the-effects-of-phytosterols-on-the-sexual-behavior-and-reproductive-function-in-the-japanese-quail-coturnix-coturnix-japonica
#11
Mohammad Ibrahim Qasimi, Kentaro Nagaoka, Gen Watanabe
Phytosterols (PS) are plant origin sterols naturally found in many foods and added as food additives. Since 1950, PS have attracted considerable attention due to their ability to lower serum cholesterol and inhibit cardiovascular disease (CVD). However, recent studies have found that PS act as endocrine-disrupting chemicals in laboratory animals. Therefore, this study was aimed at finding the mechanism(s) for PS effects on the sexual behaviors and reproductive functions in male Japanese quails (Coturnix coturnix japonica)...
June 16, 2017: Poultry Science
https://www.readbyqxmd.com/read/28637284/descriptive-texture-analyses-of-cooked-patties-made-of-chicken-breast-with-the-woody-breast-condition1
#12
G Sanchez Brambila, Debolina Chatterjee, B Bowker, H Zhuang
The woody breast (WB) condition negatively influences the texture characteristics and quality of intact broiler breast fillets (Pectoralis major). But the impact of WB on ground meat is unknown. The objective of this study was to evaluate the effects of WB on the texture and cook loss of ground meat made of broiler breast fillets. Broiler breasts (deboned 3 h postmortem) were collected on 3 separate trial d from the commercial deboning line and classified into normal and severe WB fillet categories. Individual fillets were either ground and formed into patties or left intact prior to being stored for 7 d at -20°C...
June 16, 2017: Poultry Science
https://www.readbyqxmd.com/read/28633471/development-of-a-chicken-ileal-explant-culture-model-for-measurement-of-gut-inflammation-induced-by-lipopolysaccharide
#13
Qian Zhang, Susan D Eicher, Kolapo M Ajuwon, Todd J Applegate
Gut mucosa holds a single layer of epithelial cells and the largest mass of lymphoid tissue in the body. Although the epithelial cell culture model is widely used to assess intestinal barrier function, it has limitations for studying cellular interactions, in particular those of the immune system. In this study, a chicken ileal explant culture model was developed for investigating short-term gut inflammatory and secretory responses in an ex vivo environment. Initially, ileal explants from broilers at 21 d of age were cultured ex vivo up to 6 h...
June 16, 2017: Poultry Science
https://www.readbyqxmd.com/read/28637332/coarse-particle-inclusion-and-lignocellulose-rich-fiber-addition-in-feed-benefit-performance-and-health-of-broiler-chickens
#14
Sarbast K Kheravii, Robert A Swick, Mingan Choct, Shu-Biao Wu
Measures to improve gut health and nutrient digestibility have been sought due to in-feed antibiotics being phased out in poultry. The appropriate physical structure of feed ingredients and addition of dietary fiber may be beneficial in enhancing gut health in poultry. In this study, the effect of a lignocellulose-rich fiber source and corn particle size on broiler performance, gizzard development, nutrient digestibility, cecal microflora, and litter quality was evaluated. A total of 684 day-old male Ross 308 chicks were randomly allocated to 6 treatments with 6 replicate pens, each housing 19 birds...
June 15, 2017: Poultry Science
https://www.readbyqxmd.com/read/28637299/serological-investigation-of-mycoplasma-synoviae-infection-in-china-from-2010-to-2015
#15
J Xue, M Y Xu, Z J Ma, J Zhao, N Jin, G Z Zhang
Mycoplasma synoviae can cause worldwide respiratory diseases, synovitis, or subclinical symptoms in poultry. M. synoviae infection occurs throughout the yr and causes significant economic losses, including increased mortality, condemnations, medication, and live production cost. In the present study, the seroprevalence of M. synoviae among 44,395 non-vaccinated chickens from 21 provinces in China from 2010 to 2015 was estimated using ELISA. The overall seroprevalence was 41.19%. Seropositive rates in different yr ranged between 24...
June 15, 2017: Poultry Science
https://www.readbyqxmd.com/read/28637257/effects-of-a-chromosome-9-quantitative-trait-locus-for-ascites-on-economically-important-traits-in-broilers
#16
Sriram Krishna, Katy J Tarrant, Douglas D Rhoads, Nicholas B Anthony
A quantitative trait locus on chromosome 9 was previously shown to be associated with ascites in multiple experimental and commercial populations. A study to evaluate the association of the QTL, based on variable number tandem repeat genotypes, with economically important traits was carried out on a commercial male elite line. Results indicated the highest fat and the lowest fillet mean were associated with the most resistant ascites genotype. All other traits measured for this genotype showed no trend towards positive or negatively impacting production values...
June 15, 2017: Poultry Science
https://www.readbyqxmd.com/read/28633386/oral-administration-of-tea-saponins-to-relive-oxidative-stress-and-immune-suppression-in-chickens
#17
X Chi, S Bi, W Xu, Y Zhang, S Liang, S Hu
The present study was designed to evaluate the effects of tea saponins on oxidative stress induced by cyclophosphamide in chickens. One hundred twenty chickens were randomly divided into 5 groups. Groups 3 to 4 received intramuscular injection of cyclophosphamide to induce oxidative stress and immunosuppression. After that, groups 2 and 4 were orally administered tea saponins in drinking water for 7 d. Then, groups 1 to 4 were immunized with a live, bivalent vaccine of Newcastle disease virus and infectious bronchitis virus...
June 15, 2017: Poultry Science
https://www.readbyqxmd.com/read/28633351/data-compression-can-discriminate-broilers-by-selection-line-detect-haplotypes-and-estimate-genetic-potential-for-complex-phenotypes
#18
N J Hudson, R J Hawken, R Okimoto, R L Sapp, A Reverter
Accurately establishing the relationships among individuals lays the foundation for genetic analyses such as genome-wide association studies and identification of selection signatures. Of particular interest to the poultry industry are estimates of genetic merit based on molecular data. These estimates can be commercially exploited in marker-assisted breeding programs to accelerate genetic improvement. Here, we test the utility of a new method we have recently developed to estimate animal relatedness and applied it to genetic parameter estimation in commercial broilers...
June 15, 2017: Poultry Science
https://www.readbyqxmd.com/read/28605560/effects-of-dietary-energy-and-lysine-levels-on-growth-performance-and-carcass-yields-of-pekin-ducks-from-hatch-to-21-days-of-age
#19
Z G Wen, T J Rasolofomanana, J Tang, Y Jiang, M Xie, P L Yang, S S Hou
A 2 × 6 factorial experiment, using 2 dietary apparent metabolizable energy (AME) levels (2,750 and 3,050 Kcal/kg) and 6 supplemental lysine (Lys) levels (0, 0.10, 0.20, 0.30, 0.40, and 0.50%), was conducted to study the effects of dietary energy and lysine levels on growth performance and carcass yields of Pekin ducks from hatch to 21 d of age. A total of 576 one-day-old male White Pekin ducks was randomly allotted to 12 dietary treatments, each containing 6 replicate pens with 8 birds per pen. At 21 d of age, body weight gain, feed intake, and feed/gain were measured, and then 2 ducks selected randomly from each pen were slaughtered to evaluate the yields of abdominal fat, breast meat, and leg meat...
June 9, 2017: Poultry Science
https://www.readbyqxmd.com/read/28605550/effect-of-selenium-supplementation-on-pigeon-reproductive-performance-selenium-concentration-and-antioxidant-status
#20
Y Wang, H M Yang, W Cao, Y B Li
The effects of dietary supplementation of sodium selenite (SS) on the reproductive performance and the concentration of selenium, glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), and malondialdehyde (MDA) were determined, and expression of glutathione peroxidase 4 (GPx4) and bone morphogenic protein 15 (BMP15) was evaluated. Paired pigeons (n = 864) were fed: T1 received no SS, while T2, T3, and T4 received 0.5, 1.0, and 1.5 mg of SS/kg of dry matter (DM), respectively. Treatments were performed in triplicate with 72 pairs in each replicate...
June 9, 2017: Poultry Science
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