Nitrogen retention of growing pigs obtained by nitrogen balance technique or comparative slaughter technique

Authors

  • Vladimir de Oliveira Universidade Federal de Santa Catarina
  • Elias Tadeu Fialho Universidade Federal de Lavras

DOI:

https://doi.org/10.5380/avs.v15i2.18109

Keywords:

excreção de nitrogênio, nutrição animal, retenção de proteína, animal nutrition, nitrogen excretion, protein retention

Abstract

A study was realized to compare nitrogen retention assessed either by nitrogen balance technique (NB) or by comparative slaughter technique (CST) in growing pigs feeding diets with different crude protein levels. Thirty five castrated pigs (34 ± 0.9 kg) were used, being 9 in the NB and 26 in the CST. Pigs were fed with isoenergetic and isolysinic diets formulated with the ideal ratio of amino acids. A randomized complete design was used with a 2x3 factorial arrangement of treatments: method (NB X CST) and protein level (12, 14 and 16%). The nitrogen retained was lower in CST and there was not influence of crude protein levels. The protein retained was influenced by crude protein levels of diet in the BN method. The protein retained was about 30% overestimated when calculated by BN method in comparison with CST method. These results confirm that the nitrogen retention and protein retention are overestimated by nitrogen balance method and the protein levels of diet increase the differences.

Author Biographies

Vladimir de Oliveira, Universidade Federal de Santa Catarina

Professor adjunto do Departamento de Zootecnia e Desenvolvimento Rural da Universidade Federal de Santa Catarina. Professor de Nutricao Animal de Monogastricos.

Elias Tadeu Fialho, Universidade Federal de Lavras

Professor Titular do Departamento de Zootecnia da Universidade Federal de Lavras. Professor de Nutricao e metabolismo animal.

How to Cite

de Oliveira, V., & Fialho, E. T. (2010). Nitrogen retention of growing pigs obtained by nitrogen balance technique or comparative slaughter technique. Archives of Veterinary Science, 15(2). https://doi.org/10.5380/avs.v15i2.18109

Issue

Vol. 15 No. 2 (2010)

Section

Preventive Veterinary Medicine

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