Effect of dietary protein intake on calf resilience to Haemonchus placei infection

Authors

  • Helder Louvandini Universidade de Brasília, Faculdade de Agronomia e Medicina Veterinária, Brasília, DF
  • Adibe Luis Abdalla Universidade de São Paulo, Centro de Energia Nuclear na Agricultura, Piracicaba, SP
  • Robert L. Coop Instituto de Pesquisa Moredun, Edimburgo, Escócia
  • Concepta Margareth Mc Manus Universidade de Brasília, Faculdade de Agronomia e Medicina Veterinária, Brasília, DF
  • Solange Maria Gennari Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, São Paulo, SP

DOI:

https://doi.org/10.1590/S1413-95962002000500002

Keywords:

Haemonchus placei, Protein, Diets

Abstract

Twenty, 2-3-month-old worm free male Holstein calves, were assigned to two groups each containing ten animals. Each group was offered one of two diets: High (HP) and Low (LP) protein with 257 and 91 gkg-1 dry matter respectively, balanced for energy and minerals. After an initial period of 4 weeks on the diets, the calves from each group were subdivided into two groups of four and six calves. A trickle infection of 5,000 Haemonchus placei L3 was given twice a week for nine weeks to the sub group of six calves (I). The remaining four calves from each dietary group were used as non-infected control (C). Four weeks after the last infection, all calves were slaughtered and worm burdens counts. Carried out Biochemical determinations, faecal egg counts and body weights were carried out once a week. The HP group had significantly higher mean adult worm burdens (11,900 ± 7,660) when compared with BP (5,450 ± 7,895). Faecal egg counts were higher in the HP than LP group. Despite higher worm burdens, resilience was increased in the HP calves, with higher packed cell volume values as well as body weight when compared with the LP group.

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Published

2002-01-01

How to Cite

Louvandini, H., Abdalla, A. L., Coop, R. L., Mc Manus, C. M., & Gennari, S. M. (2002). Effect of dietary protein intake on calf resilience to Haemonchus placei infection. Brazilian Journal of Veterinary Research and Animal Science, 39(5), 227-232. https://doi.org/10.1590/S1413-95962002000500002

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