Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/22017
Tipo: Artigo
Título: Creatinine as a metabolic marker to estimate urinary volume in growing goats
Autor(es): Valadares Filho, Sebastião de Campos
Santos, Stefanie Alvarenga
Prates, Luciana Louzada
Carvalho, Gleidson Giordano Pinto de
Santos, Antônio Carneiro Santana dos
Tosto, Manuela Silva Libânio
Mariz, Lays Débora Silva
Neri, Felipe da Silva
Sampaio, Mariana de Queiroz
Abstract: The objectives of this study were to: (1) quantify the relationship between fasting body weight (FBW, kg) and urinary creatinine excretion (UCE, mg/d) in Boer goats; (2) evaluate the urinary volume estimates obtained from creatinine concentrations in the spot samples collected at different time points; (3) compare them with the 24-h observed urine volume. Thirty growing Boer goats (18 ± 2.2 kg initial BW) were distributed in a complete randomized design. Each collection period fell on 2 consecutive days and collector funnels were used. Spot samples were collected at 0, 4, and 8 h after morning feedings. These procedures were repeated in three runs 25 days apart to obtain different FBWs. All the samples were analyzed to quantify creatinine concentrations. The relationship between UCE and FBW was established by the following equations: UCE = 17.39 x FBW, r^2 = 0.96, P < 0.01, RSD = 40.8; UCE = 23.50 x FBW^0.9059, R^2 = 0.96, P < 0.01, RSD = 40.9. The null hypothesis was accepted when predicted and observed values were compared (P > 0.05). Thus both linear and allometric relationships can be used to predict UCE. The spot samples obtained at 4 h after feeding could be used to estimate urinary volume (P < 0.05) instead of at 0 or 8 h. We conclude that UCE can be a metabolic marker to the estimate urinary volume of goats when calculated according to FBW with linear or allometric mathematical relationships.
Palavras-chave: Boer
Carcass
Spot sample
Urine
Editor: Small Ruminant Research
Tipo de Acesso: Open Access
URI: https://doi.org/10.1016/j.smallrumres.2017.08.007
http://www.locus.ufv.br/handle/123456789/22017
Data do documento: Set-2017
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