Dietary modulation of avian coccidiosis

PC Allen, HD Danforth, PC Augustine - International journal for …, 1998 - Elsevier
During the past several years, our laboratory has been investigating the anticoccidial activities
of various natural products that have potential use as dietary supplements for coccidiosis …

Cell: sporozoite interactions and invasion by apicomplexan parasites of the genus Eimeria

PC Augustine - International Journal for Parasitology, 2001 - Elsevier
The site specificity that avian Eimeria sporozoites and, to a more limited degree, other
apicomplexan parasites exhibit for invasion in vivo suggests that specific interactions between the …

A study of the dynamics of the invasion of immunized birds by Eimeria sporozoites

PC Augustine, HD Danforth - Avian diseases, 1986 - JSTOR
The invasion of the intestinal epithelium of immunized and unimmunized turkeys and
chickens by four species of Eimeria was quantitated. In unimmunized birds, E. adenoeides, E. …

Avian Eimeria: invasion in foreign host birds and generation of partial immunity against coccidiosis

PC Augustine, HD Danforth - Avian Diseases, 1990 - JSTOR
Four species of avian Eimeria invaded the intestine of foreign host birds in the same areas in
which they invaded the natural host. Repeated inoculation (immunization) of chickens with …

Maternal immunization with gametocyte antigens as a means of providing protective immunity against Eimeria maxima in chickens

…, U Bendheim, HD Danforth, PC Augustine - Infection and …, 1992 - Am Soc Microbiol
In the present study, we wished to demonstrate the ability of surface gametocyte antigens to
induce protective immunity against Eimeria maxima infections in chickens. In order to …

Effect of betaine on the growth performance of chicks inoculated with mixed cultures of avian Eimeria species and on invasion and development of Eimeria tenella and …

PC Augustine, JL McNaughton, E Virtanen, L Rosi - Poultry Science, 1997 - Elsevier
At 7 d postinoculation (DPI) with a mixed culture of avian Eimeria species, 21-d-old chicks
maintained in batteries and floor pens on a diet containing 0.15% (3 lb/ton) betaine plus 66 …

Influence of betaine and salinomycin on intestinal absorption of methionine and glucose and on the ultrastructure of intestinal cells and parasite developmental stages …

PC Augustine, HD Danforth - Avian diseases, 1999 - JSTOR
The effect of betaine and salinomycin on absorption of methionine and glucose in tissue from
the duodenal loops of Eimeria acervulina-infected chicks was determined. Differences in …

X-irradiation of Eimeria tenella oocysts provides direct evidence that sporozoite invasion and early schizont development induce a protective immune response (s)

MC Jenkins, PC Augustine, HD Danforth… - Infection and …, 1991 - Am Soc Microbiol
Sporulated oocysts of the protozoan parasite Eimeria tenella were attenuated by exposure
to various doses of X-radiation to inhibit intracellular replication and thus determine whether …

Genetically engineered antigen confers partial protection against avian coccidial parasites

HD Danforth, PC Augustine, MD Ruff, R McCandliss… - Poultry Science, 1989 - Elsevier
A fusion protein of β-galactosidase and Eimeria tenella produced in a recombinant
Escherichia coli strain was injected into chickens and elicited partial protection against an oral …

Historical land use evolution in a tropical acid upland agroecosystem

DP Garrity, PC Agustin - Agriculture, ecosystems & environment, 1995 - Elsevier
… The three land use maps were digitized using PC ARC/INFO, and the areas in each class
determined. Map overlay analysis was used to quantify the change in land use between dates. …