Data/hora: 14/06/2024 01:29:53

Biblioteca(s): | Embrapa Caprinos e Ovinos.
Data corrente: | 23/09/1997
Data da última atualização: | 08/09/2021
Autoria: | LEITE, E. R.; STUTH, J. W.
Afiliação: | ENEAS REIS LEITE, CNPC; Texas A&M University, College Station, USA.
Título: | Fecal NIRS equations to assess diet quality of free-ranging goats.
Ano de publicação: | 1995
Fonte/Imprenta: | Small Ruminant Research, v. 15, n. 3, p. 223-230, 1995.
Idioma: | Inglês
Conteúdo: | Abstract: Research was conducted to evaluate the predictability of the nutritional status of free-ranging goats through analysis of fecal materrial by near infrared reflectance spectroscopy (NIRS). Diet samples were collected from esophageally fistulated goats, whereas fecal samples were obtained from nonfistulated animals grazing the study areas. Percentage of crude protein (CP) and standard corrected in vitro digestible organic matter (DOM) were determined for diet samples. The resulting diet reference data and the fecal spectra were used to develop predictive equations. Standard errors of calibration (SEC) for CP and DOM were 1.12 and 2.02, being within acceptable limits for NIRS. Coeficients of determination (R2), were 0.94 and 0.93 for CP and DOM, respectively. Validation trials, performed in post oak woodlands and subtropical thornsrub regions of Texas, indicated that the selected CP and DOM equations can be useful in predicting the nutritional status of goats under different rangeland conditions.
Palavras-Chave: | Equação fecal; Fecal equation; Infrared spectrophotometry; NIRS; Nutrition precision; Status nutricional.
Thesagro: | Caprino; Dieta; Nutrição animal; Qualidade.
Thesaurus Nal: | Animal nutrition; Diet; Goats; Nutritional status; Ruminant nutrition.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
Registro original: | Embrapa Caprinos e Ovinos (CNPC)
Exemplares: | CNPC - (1000-1) - UPC - AP - PP -  -  - 1997.00000 - DIS