Synthesis of some azaheterocycles condensed to and fused with quinoxaline

2,3-dichloroquinoxaline I was allowed to react with hydrazine hydrate to give II. Reaction of II with some reagents afforded the products III-XI. Product X was utilized for synthesis of compounds XII-XXI via its reactions with active methylenes, nitriles and unsaturated systems

Effect of both Mycoplasma gallisepticum [MG] and infectious bronchitis [IB], classical and variant strains on the egg production of the broiler breeder flocks

A surver was made of mycoplasma gallisepticum [MG] and infectious bronchitis classical and variant strains. Blood samples were collected at the age of 30 and 33 weeks having a log[2] M 9-10 ND HI antibody titers allover the examination period. SPA test against MG gave 100%, 50%, and 33% positive in farm 1 [FA[1]], FA[2] and FA[3] respectively. AGPT against IB recorded a result of 41.6%, 0% and 0%, while the result of HI test against variant IB strains [M[4], D[274] and D[1466]] was 100% in all the three examined farms indicating higher titer against M[41] than D[274] and the lowest was D[1466]. The egg production curve through the period of 26-37 weeks was found to be decreased by about 10% than the control farm [negative MG and IB, classical or variant]. This decrease in egg production may be due to the infection with either MG mixed with IB or IB alone