Science and Technology Archives

Nasal Swab– a New Tool for the Detection of Porcine Respiratory Disease Complex in Natural Infected Pigs

Abstract The objectives of the present study were to determine whether nasal swab could be used for the detection of PRDC in naturally infected pigs. Fifteen piglets were used in this study. Serum, oral fluid, nasal swab, lung, tonsil and pulmonary lymph node were collected from each pig. Most common PRDC pathogens are porcine reproductive......

Chronic Royal Jelly Administration Induced Antidepressant-Like Effects Through Increased Sirtuin1 and Oxidative Phosphorylation Protein Expression in the Amygdala of Mice

Abstract Background: Major depressive disorder (MDD) is a common psychological disorder worldwide. However, one-third of patients with MDD are resistant to the present anti-depressant medicine, which regulates monoamine contents in the brain. Thus, another drug target is strongly required. Much evidence strongly suggests that sirtuin1, which is the key factor in regulating the mitochondrial activity,......

Establishment of an In Vitro Model of Persistent Chicken Anemia Virus Infection

Abstract Persistent infection of chicken anemia virus (CAV) in chickens has been suspected to result in immunosuppression and exogenous virus contamination within vaccine production. However, no direct evidence for persistent CAV infection has thus far been obtained. In this study, we aimed to establish an in vitro model of persistent CAV infection. CAV-infected MDCC-MSB1 (MSB1)......

Chicken anemia virus in northern Vietnam: molecular characterization reveals multiple genotypes and evidence of recombination

Abstract Chicken anemia virus (CAV) has a ubiquitous and worldwide distribution in the chicken production industry. Our group previously reported a high seroprevalence of CAV in chickens from northern Vietnam. In the present study, tissue samples collected from a total of 330 broiler and breeder commercial chickens in eleven provinces of northern Vietnam were tested......

Factors associated with prolonged farrowing duration in sows

Abstract The present study was conducted to investigate the effect of parity number, gestation length, litter size and average piglets’s birthweight on the prolonged farrowing duration (PFD, farrowing duration ≥5h) in sows. Data were collected from 981 sows raised at 17 farms in 6 provinces in the North of Vietnam. Univariate logistic regression models were......

Establishment of a serodiagnosis system for the detection of Toxocara spp. and Ascaris suum infection in chickens

Abstract Chickens are considered to act as paratenic hosts for agents, Toxocara canis, T. cati and Ascaris suum; which cause ascarid larva migrans syndrome (ascarid LMS) in humans. In addition, they are the definitive host for Ascaridia galli, considered not to be infective for humans. All ascarid parasites can have a high homology of antigenicity,......

Effect of vaginal discharge in sows on diarrhea in sucking piglets

The present study was conducted to investigate the effect of postparturient vaginal discharge in sows on the diarrhea in sucking piglets. In total, 67 sows and 762 sucking piglets of Landrace x Yorkshire breed were enrolled in this study. Duration of postparturient vaginal discharge (PVD), the postfarrowing timepoint at which a litter had the first......

Enhanced detection of Porcine reproductive and respiratory syndrome virus in fixed tissues by in situ hybridization following tyramide signal amplification

This study evaluated the sensitivity of biotinyl-tyramide-based in situ hybridization (TISH) method by comparison with chromogenic in situ hybridization (CISH) and immunohistochemical staining (IHC) methods. This study also determined the effect of fixative and fixation time on the detection of Porcine reproductive and respiratory syndrome virus (PRRSV) in paraffin-embedded tissues. Lung samples were fixed in......