The interaction of various pathogens with the eimerian parasites of chickens and turkeys

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" The interaction of various pathogens with the eimerian parasites of chickens and turkeys "
R. A. Norton, Jr. T. A. Yazwinski

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	1104037
Doc. No	:	TLpq303986658
Main Entry	:	R. A. Norton, Jr.
	:	T. A. Yazwinski
Title & Author	:	The interaction of various pathogens with the eimerian parasites of chickens and turkeys\ R. A. Norton, Jr.T. A. Yazwinski
College	:	University of Arkansas
Date	:	1992
student score	:	1992
Degree	:	Ph.D.
Page No	:	157-157 p.
Abstract	:	The interaction of several pathogens with eimerian species of parasites was investigated in chickens and turkeys. No synergistic effect on mortality, weight gain or oocyst production during mixed infections of Trichomonas gallinarum and Eimeria adenoids in turkeys. There did however, appear to be a trend of larger numbers of T. gallinarum being present as well as both ceca being infected when E. adenoides was present. Poults receiving newly larvated Ascaridia dissimilis at days 3, 0 and +3 and receiving Eimeria meleagrimitis had lower oocyst production than birds receiving E. meleagrimitis alone. Poults receiving 100 day old larvated A. dissimilis ova at days 3 or +3 produced fewer oocysts than birds receiving both pathogens on the same day. The method of using Spleen Weight:Gain Index proved to be the most useful in assessing concurrent infections of Hemorrhagic Enteritis Virus (HEV) or Marble Spleen Virus (MSV) and E. meleagrimitis in turkeys. The combination of either virus and E. meleagrimitis had an effect on weight gain in that these birds gained more weight than those receiving only the HEV. Birds receiving the combination of MSV and E. meleagrimitis also had fewer oocysts present in their intestines whereas no difference could be discerned when fecal samples were processed and examined for oocysts.
Subject	:	Animal diseases
	:	Biological sciences
	:	Veterinary services
	:	Veterinary services