Data/hora: 03/06/2024 10:32:17

Biblioteca(s): | Epagri-Sede.
Data corrente: | 13/09/2016
Data da última atualização: | 13/09/2016
Autoria: | GARAGORRY, F. C.; PINTO, C. E.; COSTA JÚNIOR, N. B.; BALDISSERA, T. C.; FAVARO, V. R.
Título: | Organic matter digestibility and fibers of natural grassland, improved natural grassland, and cultivated pasture in highlands of Santa Catarina State.
Ano de publicação: | 2016
Fonte/Imprenta: | In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 53., 2016, Gramado, RS. Resumos... Porto Alegre, RS: SBZ, 2016.
Idioma: | Inglês

Conteúdo:

Chemical composition characterization of pastures is essential to formulate technical
recommendations on the need for strategic supplementation in certain seasons throughout the
year. So, the organic matter digestibility as the fibers evaluation may indicate the possible points
that restrict forage intake. This study aimed to evaluete organic matter digetibility (OMD), acid
detergent fiber (ADF) and neutral detergent fiber (NDF) of natural grassland (NG), improved
natural grassland (ING), and winter cultivated pasture (WCP) in six sites representing the Santa
Catarina highlands. These data will be used to assist in pasture management recommendations
for technical and local producers. In the fall of 2012, fifteen observation units were installed on
private properties in areas ranging from 1.5 to 10 ha. The municipalities are São José do Cerrito
(SJC), Capão Alto (CA), Lages (L) Painel (PA), Bom Jardim da Serra (BJS) and São Joaquim
(SJ), in order to represent climate and the soil of the different regions of the Santa Catarina
highlands. Observations were carried out on NG and ING in L, PA, and BJS. The municipalities
of SJC, CA and SJ have added WCP. The evaluation period was from January 2014 to February
2015. The correction of soil fertility was based on soil analysis of ING and CP. The species
introduced were: rye (Secale cereale) oat (Avena sativa), annual ryegrass (Lolium multiflorum
Lam), white clover (Trifolium repens), red clover (Trifolium pratense), dactyl (Dactylis
glomerata) meadow soft grass (Holcus lanatus) and birdsfoot trefoil (Lotus corniculatus).
Samples were collected by hand-plucking in four seasons throughout the year. Posteriorly the
samples were sent to laboratory for analyze OMD, ADF and NDF using Tilley & Terry and Van
Soest protocols. NDF in NG was between 60 to 70% over the year. However FDA was increased
(41.8%) during autumn and winter compared to spring-summer (38.8%) resulting in decline in
nutritional quality. This confirms the low OMD values (average 34%). ING provided a reduction
in fiber content (55.4% NDF and ADF 36.6%) and thus increase in OMD (55.4%) in all seasons
of the year. WCP have higher nutritional quality with 45.2% NDF, 29.4% of FDA and 65.3% of
OMD. In BJS and SJ were edaphoclimatic conditions are more restrictive to pasture growth and
animal production the ING was not efficient because the OMD was only 42.5%. In this
municipalities the use of WCP is more recommended.

Palavras-Chave: | cool season species; nutritive value; overseed; pasture quality.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
URL: | http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_38257.pdf
Registro original: | Epagri-Sede (Epagri-Sede)
Exemplares: | Epagri-Sede - (100475-1) - UPC - PL - DD -  -  -  - DIS