Data/hora: 02/06/2024 06:59:07

Provedor de dados: | 52
País: | Brazil
Título: | Nitrogen balance of starting barrow pigs fed on increasing lysine levels
Autores: | Moreira,Ivan; Fraga,Alessandro Luis; Paiano,Diovani; Oliveira,Gisele Cristina de; Scapinello,Cláudio; Martins,Elias Nunes.
Data: | 2004-03-01
Ano: | 2004
Palavras-chave: | Environmental pollution; Crystalline amino acids; Protein metabolism; Slurry.
Resumo: | The effects of increasing lysine levels on nitrogen balance of pigs fed on low protein diets were evaluated. Four treatments (diets) containing lysine levels (0.8, 1.0 1.2 and 1.4%) were applied to 12 starting (20.0 ± 1.8 kg) barrow pigs. Methionine, threonine and tryptophan were kept constant to the lysine ratio in all diets. Feces and urine were collected during a 5-day period. Nitrogen output in urine (NOU), total nitrogen output (TNO), nitrogen retention (NR), net protein utilization (NPU), biological value or feed protein (BVFP), urine urea nitrogen (UUN), and plasma urea nitrogen (PUN) were determined. PUN showed high negative correlations with BVFP (-0.84), NPU (-0.76), and NR (-0.78) and a positive correlation (0.79) to NOU. Lowest nitrogen excretion and the best use of diet protein were obtained with 1.1% total lysine level. PUN is efficient to indicate amino acid for pigs.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000100012
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132004000100012
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.47 n.1 2004
Fonte: | info:eu-repo/semantics/openAccess