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M F A Farghly, M E Abd El-Hack, M Alagawany, I M Saadeldin, A A Swelum
In an attempt to alleviate the deleterious effects of high summer temperatures, the present study investigated the effects of wet feed and cold water on the growth performance, carcass and meat quality, leg problems, physiological responses, and blood parameters of growing Muscovy ducklings. A total of 180 4-week-old ducklings was randomly divided into 6 experimental groups in a 3 × 2 factorial design that included 3 feed systems (AD: ad libitum dry; DW: diurnal wet; and AW: ad libitum wet) and 2 systems of water (TW: tap water; and CW: cold water)...
February 14, 2018: Poultry Science
Mathias Devreese, Siska Croubels, Siegrid De Baere, Ronette Gehring, Gunther Antonissen
Ochratoxin A (OTA, 0.25 mg/kg body weight) was absorbed rapidly (Tmax = 0.31-1.88 h) in all avian species (broiler chickens, laying hens, turkeys and Muscovy ducks), but more slowly in broiler chickens (Tmax = 1.43 - 4.63 h). The absolute oral bioavailability was complete in these bird species (88.0% - 109.6%). Ducks have a significantly higher volume of distribution (Vd) and turkeys a lower Vd compared to chickens and layers (broiler chickens: 0.27 ± 0.12 L/kg; layers: 0.23 ± 0.08 L/kg; turkeys: 0.18 ± 0...
February 8, 2018: Journal of Agricultural and Food Chemistry
Petrus Malo Bulu, Ian D Robertson, Maria Geong
In early 2004 highly pathogenic avian influenza (HPAI) H5N1 virus caused major outbreaks of disease in poultry in Indonesia. The disease was first reported in West Timor in eastern Indonesia in the same year, resulting in the death of approximately one hundred chickens from both commercial and backyard farms; however no evidence of disease has subsequently been reported in West Timor since 2007. A targeted survey was undertaken in 2013 in 2 districts of West Timor. Three hundred village and commercial poultry (292 chickens and 8 Muscovy ducks) from 10 villages and 5 live bird markets (LBMs) were sampled between August and October 2013...
February 1, 2018: Preventive Veterinary Medicine
Rongchang Liu, Cuiteng Chen, Yu Huang, Longfei Cheng, Ronghui Lu, Guanghua Fu, Shaohua Shi, Hongmei Chen, Chunhe Wan, Qiuling Fu, Jiansheng Lin
In total, 985 livers were collected from 275 backyard waterfowl farms distributed in seven provinces of southern China. The virus that was most commonly isolated was avian influenza virus, with a 12.1% positivity rate. Of the other positive samples, 10.6% tested positive for avian Tembusu virus, 6.8% for duck hepatitis A virus, 3.8% for duck plague virus, 3.4% for Muscovy duck parvovirus, 3.1% for goose parvovirus, 1.0% for mycoplasma, and 0.9% for respiratory enteric orphan virus. The bacterium that was most commonly isolated was Escherichia coli, with a 47...
February 2, 2018: Journal of Veterinary Medical Science
Qiao Ye, Jiguo Xu, Xinfeng Gao, Hongjia Ouyang, Wei Luo, Qinghua Nie
Insulin-like growth factor 2 (IGF2) and dopamine receptor 2 (DRD2) play important roles in ovarian follicular development. In this study, we analyzed tissue-specific expression of the Muscovy duck IGF2 and DRD2 genes and cloned those genes transcripts. Polymorphisms in these genes were tightly linked with egg production traits and both genes were highly expressed in the ovary. Moreover, we identified five single nucleotide polymorphisms (SNPs) for IGF1 and 28 for DRD2. Mutations A-1864G and C-1704G of IGF2 were positively correlated with increased egg laying at 59 weeks (E59W) ( P < 0...
2017: PeerJ
Jianye Wang, Jueyi Ling, Zhixian Wang, Yu Huang, Jianzhong Zhu, Guoqiang Zhu
BACKGROUND: Muscovy duck parvovirus (MDPV) and Goose parvovirus (GPV) are important etiological agents for Muscovy duck parvoviral disease and Derzsy's disease, respectively; both of which can cause substantial economic losses in waterfowl industry. In contrast to GPV, the complete genomic sequence data of MDPV isolates are still limited and their phylogenetic relationships largely remain unknown. In this study, the entire genome of a pathogenic MDPV strain ZW, which was isolated from a deceased Muscovy duckling in 2006 in China, was cloned, sequenced, and compared with that of other classical MDPV and GPV strains...
November 9, 2017: BMC Veterinary Research
Kang Ning, Minghang Wang, Shenghua Qu, Junfeng Lv, Lixin Yang, Dabing Zhang
Goose parvovirus (GPV) usually affects goslings and Muscovy ducks but not Pekin ducks. Earlier works showed that a variant GPV can cause short beak and dwarfism syndrome (SBDS) in Pekin ducks. Here, we investigated the pathogenicity of a variant GPV of Pekin duck-origin (JS1) and a classical GPV of goose-origin (H) in Pekin ducklings. Following intramuscular infection at two days of age, both JS1 and H strains influenced weight gain and development of beaks and bones of wings and legs, and caused microscopic lesions of internal organs of ducks...
October 2017: Veterinary Microbiology
X N Su, J J Liu, Q F Zhou, X H Zhang, L C Zhao, Q M Xie, W G Chen, F Chen
Adeno-associated virus (AAV; genus Dependoparvovirus, family Parvoviridae) was first discovered in 1965 as a contaminant in adenovirus preparations. The AAVs are generally considered non-pathogenic, and they have the ability to attenuate the replication of other more pathogenic viruses, which makes them attractive as potential therapeutics or preventative measures. This study characterized a novel AAV isolated from Muscovy ducks in China. The novel virus (MHH-05-2015) was isolated after propagating a field isolate of the DAdV-3 virus (a type 3 duck adenovirus) in duck embryo fibroblasts...
September 1, 2017: Poultry Science
Mohamed F A Farghly, Khalid M Mahrose, Zafar Ullah, Zaib Ur Rehman, Chan Ding
This experiment was conducted to observe the effects of varying swimming times (ST) of Muscovy ducks, raised in an open-sided house, in alleviating the deleterious effects of high temperature in hotter times of the day in the summer season on growth performance (body weight, average daily gain, feed consumption, and feed conversion ratio), carcass characteristics, body temperature, and some health aspects. We hypothesized that swimming times during the hottest periods of the day would show different performances...
September 1, 2017: Poultry Science
Mei-Qing Huang, Xiao-Xia Cheng, Shi-Long Chen, Min Zheng, Shao-Ying Chen
Muscovy duck reovirus (MDRV) belongs to the Orthoreovirus genus of the Reoviridae family, which is a significant poultry pathogen leading to high morbidity and mortality in ducklings. However, the pathogenesis of the virus is not well understood. In the present study, two-dimensional (2D) polyacrylamide gel electrophoresis (PAGE) combined with LC-MS-MS was used to identify differentially expressed proteins between Muscovy duck embryo fibroblasts (MDEF) infected with virulent (MV9710 strain) and attenuated (CA strain) MDRV and non-infected MDEFs...
October 18, 2017: Journal of Veterinary Medical Science
Yijian Wu, Huihui Jiang, Erpeng Zhu, Jian Li, Quanxi Wang, Wuduo Zhou, Tao Qin, Xiaoping Wu, Baocheng Wu, Yifan Huang
To elucidate the effect of Hericium erinaceus polysaccharide (HEP) on the intestinal mucosal immunity in normal and Muscovy duck reovirus (MDRV)-infected Muscovy ducklings, 1-day-old healthy Muscovy ducklings were pretreated with 0.2g/L HEP and/or following by MDRV infection in this study, duodenal samples were respectively collected at 1, 3, 6, 10, 15 and 21day post-infection, tissue sections were prepared for observation of morphological structure and determination of intestinal parameters (villus height/crypt depth ratio, villus surface area) as well as counts of intraepithelial lymphocytes (IELs), goblet cells, mast cells...
September 23, 2017: International Journal of Biological Macromolecules
Taofeng Lu, Qin Ma, Wenzhuo Yan, Yuanzhi Wang, Yuanyuan Zhang, Lili Zhao, Hongyan Chen
Muscovy duck parvovirus (MDPV) causes high mortality and morbidity in ducks. This study investigated a novel aptamer-based, label-free aptasensor detection of MDPV. In this study, we developed an ssDNA aptamer using the filtration partition and lambda exonuclease method with an affinity-based monitor and counter-screening process. After 15 rounds of SELEX (systematic evolution of ligands by exponential enrichment), the ssDNA aptamer Apt-10, which specifically bound to MDPV with high affinity (Kd = 467nM) was successfully screened, and the aptamer was also found to be good specific to MDPV...
January 1, 2018: Talanta
Quanxi Wang, Mengxi Liu, Lihui Xu, Yijian Wu, Yifan Huang
The aim of this work was to clarify the molecular mechanism underlying the fatty degeneration of livers infected with Muscovy duck reovirus (MDRV), which produces obvious white necrotic foci in the liver. Transcriptome data for MDRV-infected Muscovy duck livers and control livers were sequenced, assembled, and annotated with Illumina(®) HiSeq 2000. The differentially expressed genes were screened and their functions were analysed. We also determined and confirmed the molecular mechanism of the hepatic fat metabolism disorder caused by MDRV infection...
October 10, 2017: Avian Pathology: Journal of the W.V.P.A
B Vidaña, R Dolz, N Busquets, A Ramis, R Sánchez, R Rivas, R Valle, I Cordón, D Solanes, J Martínez, N Majó
H7N9 virus infection is a global concern, given that it can cause severe infection and mortality in humans. However, the understanding of H7N9 epidemiology, animal reservoir species and zoonotic risk remains limited. This work evaluates the pathogenicity, transmissibility and local innate immune response of three avian species harbouring different respiratory distribution of α2,6 and α2,3 SA receptors. Muscovy ducks, European quails and SPF chickens were intranasally inoculated with 10(5) embryo infectious dose (EID)50 of the human H7N9 (A/Anhui/1/2013) influenza isolate...
September 14, 2017: Zoonoses and Public Health
Jianye Wang, Yu Huang, Jueyi Ling, Zhixiang Wang, Guoqiang Zhu
For members of the family Parvoviridae, rescue of infectious virus from recombinant plasmid is usually done in cultured cells. In this study, the whole genome of the pathogenic Muscovy duck parvovirus (MDPV) strain YY was cloned into the pBluescript II (SK) vector, generating recombinant plasmid pYY. With the aid of a transfection reagent, pYY plasmid was inoculated into 11-day-old embryonated Muscovy duck eggs via the chorioallantoic membrane route, resulting in the successful rescue of infectious virus and death of the embryos...
December 2017: Archives of Virology
Liji Xie, Zhixun Xie, Li Huang, Sheng Wang, Jiaoling Huang, Yanfang Zhang, Tingting Zeng, Sisi Luo
Sequence analysis of duck plague virus (DPV) revealed that there was a 528bp (B fragment) deletion within the UL2 gene of DPV attenuated vaccine strain in comparison with field virulent strains. The finding of gene deletion provides a potential differentiation test between DPV virulent strain and attenuated strain based on their UL2 gene sizes. Thus we developed a polymerase chain reaction (PCR) assay targeting to the DPV UL2 gene for simultaneous detection of DPV virulent strain and attenuated strain, 827bp for virulent strain and 299bp for attenuated strain...
August 30, 2017: Journal of Virological Methods
E Baéza, P Chartrin, T Bordeau, M Lessire, J M Thoby, V Gigaud, M Blanchet, A Alinier, C Leterrier
The welfare of ducks can be affected by unwanted behaviors such as excessive reactivity and feather pecking. Providing long-chain n-3 polyunsaturated fatty acids (LC n-3 PUFA) during gestation and early life has been shown to improve the brain development and function of human and rodent offspring. The aim of this study was to test whether the pecking behavior of Muscovy ducks during rearing could be reduced by providing LC n-3 PUFA during embryonic and/or post-hatching development of ducklings. Enrichment of eggs, and consequently embryos, with LC n-3 PUFA was achieved by feeding female ducks (n-3F) a diet containing docosahexaenoic (DHA) and linolenic acids (microalgae and linseed oil)...
September 1, 2017: Poultry Science
Yongjuan Wang, Shanyuan Zhu, Weiming Hong, Anping Wang, Weiyong Zuo
In this study, six pairs of specific primers that can amplify DNA fragments of different sizes were designed and synthesized according to viral protein gene sequences published in GenBank. Then, a multiplex PCR method was established for rapid detection of duck hepatitis virus 1, duck plague virus, duck Tembusu virus, muscovy duck parvovirus, muscovy duck reovirus, and duck H9N2 avian influenza virus, and achieve simple and rapid detection of viral diseases in ducks. Single PCR was used to confirm primer specificity, and PCR conditions were optimized to construct a multiplex PCR system...
October 2017: Journal of Virological Methods
Qiuling Fu, Yu Huang, Chunhe Wan, Guanghua Fu, Baomin Qi, Longfei Cheng, Shaohua Shi, Hongmei Chen, Rongchang Liu, Zhenhai Chen
In 2008, clinical cases of short beak and dwarfism syndrome (SBDS) caused by Muscovy duck parvovirus (MDPV) infection were found in mule duck and Taiwan white duck farms in Fujian, China. A MDPV LH strain causing duck SBDS without tongue protrusion was isolated in this study. Phylogenetic analysis show that the MDPV LH strain was clustered together with other MDPV strains, but divergent from GPV isolates. Two major fragment deletions were found in the inverted terminal repeats (ITR) of MDPV LH similar to the ones in the ITR of MDPV GX5, YY and SAAS-SHNH strains...
July 12, 2017: Research in Veterinary Science
Jiguo Xu, Xinfeng Gao, Xing Li, Qiao Ye, Endashaw Jebessa, Bahareldin Ali Abdalla, Qinghua Nie
Follicle-stimulating hormone (FSH) and its receptor play a key role in the follicular development and regulation of steroidogenesis in the ovary and spermatogenesis in the testis. The purpose of this study was to characterize themuscovy duck FSHR gene, identify SNPs and their association with egg production traits in muscovy ducks. Here, we cloned the complementary DNA (cDNA) sequence of FSHR, and examined the expression patterns of FSHR gene in adult female muscovy duck tissues. The cloned cDNA of the muscovy duck FSHR gene shared high similarity to those of pekin duck (Anas platyrhynchos) (95...
June 2017: Journal of Genetics
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