Lesion Scores of Chickens Given Different Number of Eimeria Necatrix Oocysts / Bhurtel, R. in Nepal Agriculture Research Journal, Vol.1, No. 1 (1997)  

Public ISBD [article]  inNepal Agriculture Research Journal > Vol.1, No. 1 (1997) Title : Lesion Scores of Chickens Given Different Number of Eimeria Necatrix Oocysts Material Type: printed text Authors: Bhurtel, R., Author ; S. A. Edger, Author Publication Date: 1997 General note: Part of the unpublished M.S. thesis (1982), Research conducted at Auburn University, Auburn, Alabama, USA. Languages : English (eng) Keywords: Eimeria  necatrix,  protozoan,  oocysts Abstract: This study was undertaken to observe the lesion scores of chickens were given different number of oocysts of Eimeria necatrix. Maximum severity in chickens was observed with Eimeria necatrix infection at 120 to 144 hours, with 100,000 or 200,000 oocysts (severe infection) per bird and at 168 hours when chickens had 20,000 oocysts (mild infection) per bird. Severe infection caused acute hemorrhage enteritis. Lesions were uniformly distributed throughout the length of the small intestines, but the middle portion showed the greater involvement. At 144 hours postinoculation the intestine became "ballooned" and was congested and edematous in appearance. The thickness of the intestinal walls increased to more than double the normal size. A few trophozoites and schizonts were found in proventiculum and gizzard probably due to reverse peristalsis. The swelling and excessive thickness disappeared by 192 hours. The intestinal tract looked dehydrated but no scars were seen in emaciated survivors. In case of mild infection, the petechiae and white spots accompanied by hemorrhages were most pronounced at 168 hours postinoculation. The serosa of intestines had a spotted appearance. White spots were intermingled with bright or dull red petechiae of various sizes and mostly present in the middle portion of the small intestine which was swollen like a balloon, but swelling decreased as petechiae disappeared. The intestinal wall became thicker than normal. Yellow tinged exudate was present in the intestinal contents, which was streaked with small hemorrhages. At 192 hours the intestine looked almost normal. The changes seen in infected chickens were very constant and striking,. Link for e-copy: http://elibrary.narc.gov.np/?r=2488 [article] Lesion Scores of Chickens Given Different Number of Eimeria Necatrix Oocysts [printed text] / Bhurtel, R., Author ; S. A. Edger, Author . - 1997. Part of the unpublished M.S. thesis (1982), Research conducted at Auburn University, Auburn, Alabama, USA. Languages : English (eng) in Nepal Agriculture Research Journal > Vol.1, No. 1 (1997) Keywords: Eimeria  necatrix,  protozoan,  oocysts Abstract: This study was undertaken to observe the lesion scores of chickens were given different number of oocysts of Eimeria necatrix. Maximum severity in chickens was observed with Eimeria necatrix infection at 120 to 144 hours, with 100,000 or 200,000 oocysts (severe infection) per bird and at 168 hours when chickens had 20,000 oocysts (mild infection) per bird. Severe infection caused acute hemorrhage enteritis. Lesions were uniformly distributed throughout the length of the small intestines, but the middle portion showed the greater involvement. At 144 hours postinoculation the intestine became "ballooned" and was congested and edematous in appearance. The thickness of the intestinal walls increased to more than double the normal size. A few trophozoites and schizonts were found in proventiculum and gizzard probably due to reverse peristalsis. The swelling and excessive thickness disappeared by 192 hours. The intestinal tract looked dehydrated but no scars were seen in emaciated survivors. In case of mild infection, the petechiae and white spots accompanied by hemorrhages were most pronounced at 168 hours postinoculation. The serosa of intestines had a spotted appearance. White spots were intermingled with bright or dull red petechiae of various sizes and mostly present in the middle portion of the small intestine which was swollen like a balloon, but swelling decreased as petechiae disappeared. The intestinal wall became thicker than normal. Yellow tinged exudate was present in the intestinal contents, which was streaked with small hemorrhages. At 192 hours the intestine looked almost normal. The changes seen in infected chickens were very constant and striking,. Link for e-copy: http://elibrary.narc.gov.np/?r=2488