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The article presents a study which analyses the hemagglutinin genes of H9N2 subtype avian influenza virus (AIV) from the chicken flocks in Guangdong and Guangxi provinces in China. The study method used includes phylogenetic analysis, cloning, and gene amplification. Result shows that the viruses has the potential to cross species and hybrid to infect humans.

The article reports on the study of the variation of chicken anemia virus (CAV) in Guangdong, China using the coding sequences and polymerase chain reaction (PCR) detection method. The result showed that viral protein (VP)1 has 17 variations, VP2 has 11 variations, and the VP3 has six variations. Also mentioned that the coding sequence on the Guangdong isolates are located in two clusters including the nine CAV isolates with other 35 bigger group and one CAV is located in small group

The present study investigated the effects of xanthophyll supplementation on production performance, antioxidant capacity (measured by glutathione peroxidase, superoxide dismutase (SOD), catalase, total antioxidant capacity (T-AOC), and reduced glutathione:oxidised glutathione ratio (GSH:GSSG)) and lipid peroxidation (measured by malondialdehyde (MDA)) in breeding hens and chicks. In Expt 1, 432 hens were fed diets supplemented with 0 (control group), 20 or 40 mg xanthophyll/kg diet. Blood samples were taken at 7, 14, 21, 28 and 35 d of the trial. Liver and jejunal mucosa were sampled at 35 d. Both xanthophyll groups improved serum SOD at 21 and 28 d, serum T-AOC at 21 d and liver T-AOC, and serum GSH:GSSG at 21, 28 and 35 d and liver GSH:GSSG. Xanthophylls also decreased serum MDA at 21 d in hens. Expt 2 was a 2 × 2 factorial design. Male chicks hatched from 0 or 40 mg in ovo xanthophyll/kg diet of hens were fed a diet containing either 0 or 40 mg xanthophyll/kg diet. Liver samples were collected at 0, 7, 14 and 21 d after hatching. Blood samples were also collected at 21 d. In ovo-deposited xanthophylls increased antioxidant capacity and decreased MDA in the liver mainly within 1 week after hatching. Maternal effects gradually vanished during 1–2 weeks after hatching. Dietary xanthophylls increased antioxidant capacity and decreased MDA in the liver and serum mainly from 2 weeks onwards. Data suggested that xanthophyll supplementation enhanced antioxidant capacity and reduced lipid peroxidation in different tissues of hens and chicks. [ABSTRACT FROM PUBLISHER]

The article presents a study on the detection and diagnosis of H5N1 subtype avian influenza virus through reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay. It was observed that the amplification efficiency of the LAMP method is high, in comparison with polymerase chain reaction (PCR). The study indicates that the method is simple, accurate and specific, as well as, sensitive and rapid in detecting the subtype virus.

A correction to the article "Supplementation of xanthophylls decreased proinflammatory and increased anti-inflammatory cytokines in hens and chicks" in the November 2012 issue is presented.