The aim of this study was to determine the prevalence of M. hyopneumoniae infection in suckling pigs. Nasal swabs were collected from 300 suckling pigs originating from five farrow-to-finishing farms. One farm had a c...The aim of this study was to determine the prevalence of M. hyopneumoniae infection in suckling pigs. Nasal swabs were collected from 300 suckling pigs originating from five farrow-to-finishing farms. One farm had a confirmed PRDC problem (farm A) and four other farms previously had a PRDC problem (farms B, C, D and E). Thirty (30) lactating sows in parity 1, 2 and 3 were selected from each farm (Ten sows per parity). Two piglets from each sow were randomly sampled for nasal swab at 3 weeks of age. The samples were analyzed by the nested PCR technique. Forty five per cent (27/60) of nasal swabs from farm A were found positive. On the other hand, a total of 2.08 per cent were found positive (5/240) from farm B, C, D and E. The tendency of piglet infection per sow by parity showed that first parity had more prevalence than the second and the third parity (60%, 55%, 20%), respectively. We have found a correction between M. hyopneumoniae early infection in suckling pigs and a confirmed PRDC problem (farm A) as oppose to farms that did not have a PRDC problem. The strategies to prevent M. hyopneumoniae early infection are to maintain good lactation, antibiotic prevention program and early M. hyopneumoniae展开更多
This study was designed to determine the safety and efficacy of cefovecin (Convenia?;Pfizer Animal Health) when compared to clindamycin (Antirobe?;Pfizer Animal Health) as an adjunctive therapy to periodontal scaling ...This study was designed to determine the safety and efficacy of cefovecin (Convenia?;Pfizer Animal Health) when compared to clindamycin (Antirobe?;Pfizer Animal Health) as an adjunctive therapy to periodontal scaling or surgery for severe periodontal disease in dogs. A multi-centre, double-masked, randomised study was conducted in 299 dogs with severe periodontal disease. Clindamycin, administered once daily at 11 mg/kg bodyweight orally for 10 days following dental surgery was compared with a single, subcutaneous injection of cefovecin (8 mg/kg bodyweight) administered at the time of dental surgery. The primary efficacy parameter assessed was percentage of tooth-root sites bleeding when probed (an indicator of gingival inflammation) 42 days after surgery. Two-hundred and ninety-one (291) dogs were included in the efficacy assessments. Cefovecin was shown to be non-inferior to clindamycin. The percentage of sites bleeding on probing was reduced from 54.3% to 20.3% for the cefovecin group (53.1% reduced to 17.4% for the clindamycin group). There were no suspected adverse drug experiences attributed to treatment with cefovecin or clindamycin. Cefovecin was shown to be as effective and safe adjunctive treatment for severe periodontal disease in dogs undergoing periodontal scaling and surgery as clindamycin.展开更多
To amplify the NS, NP, PB1, PB2 and PA internal genes of two equine H3N8 influenza A viruses isolated in Greece in 2003 and 2007 five primer pairs were designed. The derived sequences were analysed from a phylogenetic...To amplify the NS, NP, PB1, PB2 and PA internal genes of two equine H3N8 influenza A viruses isolated in Greece in 2003 and 2007 five primer pairs were designed. The derived sequences were analysed from a phylogenetic point of view and compared with the evolutionary patters of the HA and NA proteins. Comparison of nucleotide sequences of the five internal genes of the Greek strains showed high similarity (99.3% - 99.7%) to strains isolated from outbreaks in Europe and Asia during 2002-2008. A total of 11 amino acid substitutions of the surface protein NA and the RNP complex proteins were identified in the Greek strains compared to those of progenitor viruses circulating up to 2003. These substitutions were repeated in Chinese and Mongolian isolates from outbreaks in 2007-2008. Notably NS1 protein did not acquired amino acid substitutions and moreover, a stop codon introduced at position 220 was stably maintained in the Greek strains. Phylogenetic trees of the five internal genes did not show the same separation in clades. Greek strains classified them into the American sublineage (as for the PA) Florida clade II (as for the NP, NS1 and PB1) and among Chinese strains of 2007-2008 outbreaks (as for the PB2). Additionally, evolutionary profiles of these internal proteins, except PB2, indicated a parallel evolution fashion to the HA protein, suggesting the possible occurrence of genetic reassortment between H3N8 viruses of district evolutionary lineages. In conclusion, phylogenetic analysis of the internal genes reported in this study could establish a candidate framework for future scientific communications on the phylogenetic diversity and evolution of the equine influenza viruses.展开更多
文摘The aim of this study was to determine the prevalence of M. hyopneumoniae infection in suckling pigs. Nasal swabs were collected from 300 suckling pigs originating from five farrow-to-finishing farms. One farm had a confirmed PRDC problem (farm A) and four other farms previously had a PRDC problem (farms B, C, D and E). Thirty (30) lactating sows in parity 1, 2 and 3 were selected from each farm (Ten sows per parity). Two piglets from each sow were randomly sampled for nasal swab at 3 weeks of age. The samples were analyzed by the nested PCR technique. Forty five per cent (27/60) of nasal swabs from farm A were found positive. On the other hand, a total of 2.08 per cent were found positive (5/240) from farm B, C, D and E. The tendency of piglet infection per sow by parity showed that first parity had more prevalence than the second and the third parity (60%, 55%, 20%), respectively. We have found a correction between M. hyopneumoniae early infection in suckling pigs and a confirmed PRDC problem (farm A) as oppose to farms that did not have a PRDC problem. The strategies to prevent M. hyopneumoniae early infection are to maintain good lactation, antibiotic prevention program and early M. hyopneumoniae
文摘This study was designed to determine the safety and efficacy of cefovecin (Convenia?;Pfizer Animal Health) when compared to clindamycin (Antirobe?;Pfizer Animal Health) as an adjunctive therapy to periodontal scaling or surgery for severe periodontal disease in dogs. A multi-centre, double-masked, randomised study was conducted in 299 dogs with severe periodontal disease. Clindamycin, administered once daily at 11 mg/kg bodyweight orally for 10 days following dental surgery was compared with a single, subcutaneous injection of cefovecin (8 mg/kg bodyweight) administered at the time of dental surgery. The primary efficacy parameter assessed was percentage of tooth-root sites bleeding when probed (an indicator of gingival inflammation) 42 days after surgery. Two-hundred and ninety-one (291) dogs were included in the efficacy assessments. Cefovecin was shown to be non-inferior to clindamycin. The percentage of sites bleeding on probing was reduced from 54.3% to 20.3% for the cefovecin group (53.1% reduced to 17.4% for the clindamycin group). There were no suspected adverse drug experiences attributed to treatment with cefovecin or clindamycin. Cefovecin was shown to be as effective and safe adjunctive treatment for severe periodontal disease in dogs undergoing periodontal scaling and surgery as clindamycin.
文摘To amplify the NS, NP, PB1, PB2 and PA internal genes of two equine H3N8 influenza A viruses isolated in Greece in 2003 and 2007 five primer pairs were designed. The derived sequences were analysed from a phylogenetic point of view and compared with the evolutionary patters of the HA and NA proteins. Comparison of nucleotide sequences of the five internal genes of the Greek strains showed high similarity (99.3% - 99.7%) to strains isolated from outbreaks in Europe and Asia during 2002-2008. A total of 11 amino acid substitutions of the surface protein NA and the RNP complex proteins were identified in the Greek strains compared to those of progenitor viruses circulating up to 2003. These substitutions were repeated in Chinese and Mongolian isolates from outbreaks in 2007-2008. Notably NS1 protein did not acquired amino acid substitutions and moreover, a stop codon introduced at position 220 was stably maintained in the Greek strains. Phylogenetic trees of the five internal genes did not show the same separation in clades. Greek strains classified them into the American sublineage (as for the PA) Florida clade II (as for the NP, NS1 and PB1) and among Chinese strains of 2007-2008 outbreaks (as for the PB2). Additionally, evolutionary profiles of these internal proteins, except PB2, indicated a parallel evolution fashion to the HA protein, suggesting the possible occurrence of genetic reassortment between H3N8 viruses of district evolutionary lineages. In conclusion, phylogenetic analysis of the internal genes reported in this study could establish a candidate framework for future scientific communications on the phylogenetic diversity and evolution of the equine influenza viruses.
