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Evaluation of Moisture percentage and pH Scale in Relation to Survivability of Vaccine Escape Mutant Newcastle Disease Virus Genotype VII in Poultry Manure

Evaluation of Moisture percentage and pH Scale in Relation to Survivability of Vaccine Escape Mutant Newcastle Disease Virus Genotype VII in Poultry Manure

Ragia S. Mohamed1, Rania F. El Naggar2, Mamdouh. M. Hamoud1, Mohamed M. Hamoud3, Abdulrhman M. Gamal1, Samah E. Laban1, Shimaa A.E. Nasr1, Manal M. Zaki1, ElShaimaa Ismael1, Osama K. Zahran1* 

1Department of Animal Hygiene and Veterinary Management, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt; 2Department of Virology, Faculty of Veterinary Medicine, University of Sadat City, Sadat, Egypt; 3Department of Poultry and Rabbit diseases, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt. Medicine, Cairo University, Giza, 12211, Egypt.

zahran771953@gmail.com 

Figure 1

Amino acids mutation trend analysis for F protein of field strain velogenic NDV genotype VII in compare to commonly used vaccine strain of Genotypes I and II. 

Figure 2

Phylogenetic analysis of the studied NDV isolate genotype VII and their clustering patterns with representative AAvV-1 isolates of each genotype. Reported isolates clustered within genotype VII of class II. The position of clustering is indicated by a blue box. 

Figure 3

Days interval for evaluation of moisture % and pH and their effect on velogenic NDV genotype VII survivability. 

Figure 4

Evaluation of A) pH and B) moisture % on the survival of velogenic NDV genotype VII in poultry manure. 

Hosts and Viruses

April

Vol.6, Iss.2, Pages 23-41

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