Abstract
Eimeria maxima inoculations of 5 × 104 oocysts and E. acervulina inoculations of 2 × 105 to 4 × 105 oocysts were shown to depress growth by 15 to 20% in young chicks fed crystalline amino acid (CAA) diets. The intestinal lesions produced were typical of light to moderate coccidiosis. In one experiment, the performance of chicks fed monensin was increased in the presence, but not in the absence, of E. acervulina. Thus, monensin prevented the negative effects of E. acervulina on chick performance. This coccidiosis × monensin interaction was also indicative of an active coccidiosis infection.Severe E. acervulina infections were produced by inoculations of 1 × 106 or 2 × 106 oocysts. Under these conditions, gain was depressed by 30 to 40% and the intestinal lesions produced were indicative of severe coccidiosis. Also, E. acervulina infections were more severe in birds fed CAA diets than in birds fed corn-soybean meal diets. Trypsin incubation of the oocysts prior to inoculation had no significant effect on performance regardless of diet type.Based upon growth rate, intestinal lesions, and responses to anticoccidial drugs, it was clearly demonstrated that coccidiosis of varying severity can be produced in birds fed CAA diets. In addition, it was observed that the CAA diet, with 24.58% amino acids, contained adequate levels of all indispensible nutrients, even during coccidiosis. This assures that the diet can be used effectively for nutrient requirement studies during coccidiosis.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.