01872cab a2200325Ia 45 0 u202884 SIRSI 120605s2011 ua ss b eng d EAL eng ara ART ZVJ V39 No2 17 Hegazy, A. M. Zagazig veterinary journal, 2011 v. 39 (2) [electronic resource]. Evaluation or sonicated E. coli vaccine in chickens [electronic resource]. تقييم لقاح الميكروب القولوني المعامل بالموجات فوق الصوتية في الدجاج. P. 163-170. Includes references. Laying hens were vaccinated with sonicated E. coli 078 vaccine at 20 and 25 week old, the immune response was estimated by ELISA and IHT test in hens, eggs and hatched chicks after 1st, 2nd, 3rd and 4th weeks post vaccination and hatching. The titer was measured by ELISA in hens ranged from 8.86-9.84. While GMT titer ranged from 1.99-2.71, while in eggs was ranging from 8.1-8.86 and from 1.32-2.43. In chicks ranged from 8.81-5.79 and 1.32 -2.1 respectively. The protection by sonicated vaccine with homologous strain at 14,21 and 28 day post hatching was 80, 60 and 50% while it was 70, 50 and 50% when challenge with heterologus strain respectively. On the other hand body weight gain and feed conversion rate significantly improved than that of control non vaccinated groups. Summary in Arabic. Chickens Vaccination Escherichia coli. Chickens Diseases Lebdah, M. A. A. Nasef, Soad A. Ehab, A. Zagazig Veterinary Journal. 2011.v.39(2) 1110-1458 nass u189860 http://nile.enal.sci.eg/EALE/2011/ZVJ/3911/2/163.pdf Full Text Article. 1 AR lcc 54709 54709