Effects of single or concurrent infections with Eimeria alabamensis and gastrointestinal nematodes on the performance of calves on pasture

Sammanfattning

Twenty-four calves unexposed to pasture were allocated to four groups and inoculated with either two doses of 5 million Eimeria alabamensis oocysts at turn-out (E), 90,000 L3 of Ostertagia ostertagi and Cooperia oncophora divided on six occasions (N) or both oocysts and larvae as above (E + N). A control group was left uninoculated (C). For 10 weeks, the groups grazed in separate uniform paddocks not previously grazed by cattle. By day 5, most calves in groups E and E + N developed clinical coccidiosis that resulted in reduced weight gain compared to C and N. Mean trichostrongylid faecal egg counts in groups N and E + N never exceeded 300 eggs per gram of faeces, and average serum pepsinogen levels were less than 3.8 U tyrosine. This experiment demonstrates the potential impact of E. alabamensis on the performance of previously unexposed calves, whereas no aggravated effects were observed due to concurrent infections with gastrointestinal nematodes

Publicerad i

Parasitology Research
2006, volym: 99, nummer: 1, sidor: 84-89
Utgivare: SPRINGER

SLU författare

• Uggla, Arvid

  • Institutionen för husdjurens biovetenskaper, Sveriges lantbruksuniversitet
    

• Höglund, Johan

  • Institutionen för husdjurens biovetenskaper, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Husdjursvetenskap
Veterinärmedicin

Publikationens identifierare

• DOI: https://doi.org/10.1007/s00436-005-0109-4

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/9967