Data/hora: 16/06/2024 10:38:15

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 02/03/2001
Data da última atualização: | 30/03/2017
Autoria: | SANTOS, S. A.; COSTA, C.; POTT, A.; ALVAREZ, J. M.
Afiliação: | EMBRAPA Pantanal (Corumba, MS). UNESP/FMVZ (Botucatu, SP).
Título: | Test of a conversion equation to increase the accuracy of microhistological analysis of herbivore diets in the Pantanal.
Ano de publicação: | 2001
Fonte/Imprenta: | In: INTERNATIONAL GRASSLAND CONGRESS, 19., Sao Pedro, 2001. Proceedings. Sao Pedro: Sociedade Brasileira de Zootecnica, 2001. p.337-338.
Idioma: | Inglês
Conteúdo: | Forty forage species samples were collected in September 1999, including grass, sedges, forbs, shrubs and trees. Seven hand-compounded mixtures of know botanical composition and dry weight were prepared. Five slides of each mixture were made and 20 frequency observations were recorded per slide. Two procedures were used to determine percent composition on a dry weight basis and their values were  converted to correct the proportion of the unidentifiable fragments amongst species. Estimated and actual values differed significantly (P<0.05) in 31.7%, 34.1%, 12.2% and 12.2% of the species for frequency addition (FA), density convertion (DC), frequency addition converted (FAC) and density convertion converted (DCC), respectively. The average similarity values between estimated and observed mixture were 90.2, 86.0, 94.2 and 93.3 for FA, DC, FAC and DCC, respectively. In conclusion, food habits by microscopic analysis may be described using any of the procedures tested because they rank important forage species for herbivores.
Palavras-Chave: | Herbivore; Herbivoro; Native pasture.
Thesagro: | Composição Botânica; Dieta; Pastagem Nativa.
Thesaurus Nal: | botanical composition; diet; Pantanal.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (48329-1) - UPC - SP - PP - SP16221 -  - 16221 - DIS