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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/31122
Title: 
Estudo do balanço nitrogenado e da digestibilidade da matéria seca e proteína de rações, para ovinos, suplementadas com amiréia, uréia ou farelo de algodão
Other Titles: 
Study of the nitrogen balance and dry matter and protein digestibility of rations, for lambs, supplemented with Starea, urea or cottonseed meal
Author(s): 
Institution: 
Universidade Estadual Paulista (UNESP)
ISSN: 
0100-4859
Abstract: 
To evaluate the nutritional value of rations supplemented with different protein sources, an in vivo digestibility trial was conducted to determine the coefficients of digestibility for dry matter (DMDC) and crude protein (CPDC), nitrogen balance (NB) and the fecal non-protein nitrogen (NPN). Twenty - four 11-months - old lambs weighing 30.4 +/- 3.0 kg were blocked on the basis of their body weight and randomly allocated to three treatments groups; suplemented with cottonseed meal (CSM), starea (ST) or urea (UR). The DMDC was statistically superior for the Starea treatment (67.7%) over the others (64.3% and 64.1% for CSM and UR). The CSM, UR and ST rations had no influence on CPDC (63.9; 66.9 and 69.4%, respectively) and on fecal NPN (1,3; 1,2 e 1,3 g/day, respectively). The NB results were similar also among treatments (13,4; 9,0 e 10,5 g/day to CSM, UR and ST, respectively) although the ST treatment lambs excreted larger amounts of nitrogen in the urine (7.7 g/day) in relation to CSM (4.8g/day) and similar to UR treatment (6.5 g/day). Starea supplement in ruminant diets increased dry matter digestibility when compared to cottonseed meal and urea, but did not improve the efficiency of the nitrogen utilization by lambs.
Issue Date: 
1-Jan-1997
Citation: 
Revista da Sociedade Brasileira de Zootecnia-Journal of the Brazilian Society of Animal Science. Vicosa-mg: Revista Sociedade Brasileira Zootecnia, v. 26, n. 1, p. 179-185, 1997.
Time Duration: 
179-185
Publisher: 
Revista Sociedade Brasileira Zootecnia
Keywords: 
  • starea
  • Nitrogen balance
  • Digestibility
  • cottonseed meal
  • Lambs
  • urea
Source: 
http://www.revista.sbz.org.br/artigo/index.php?artigo=26
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/31122
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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