Data/hora: 07/06/2024 17:05:12

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	18/02/1997	
Data da última atualização: 	03/04/2017	
Autoria: 	SKINNER, J. D.; MONRO, R. H.; ZIMMERMANN, I.	
Título: 	Comparative food intake and growth of cattle and impala on mixed tree savanna.	
Ano de publicação: 	1984	
Fonte/Imprenta: 	South African Journal of Wildlife Research, v.14, n.1, p.1-9, 1984.	
Idioma: 	Inglês	
Conteúdo: 	In mixed tree savanna on the Nylsvley Nature Reserve, South Africa, cattle showed a preference for feeding on the herbaceous vegetation growing under tree canopies, and favoured patches of Acacia savanna over the surrounding Burkea savanna. Impala utilized Burkea savanna, especially firebreaks, during summer, but concentrated on areas of Acacia savanna during the dry season. For cattle the staple food species were Panicum maximum and Digitaria eriantha, which together made up about 25% of their year-round diet, while Schmidtia pappaphoroides seemed to be the most higly preferred grass. Only in October did cattle do a significant amount of browsing, on new leaves of Ochna pulchra. For impala D. eriantha was the most important grass, although in winter dicotyledons comprised up to 67% of their diet, with Acacia pods an important constituent. In December 88% of the cattle diet consisted of green material, while by August this proportion had dropped to 3%. Both cattle and impala devoted 38% of the 24-h day on average to feeding. The daily food intake of cattle varied between 1,7 and 30% (organic matter) of body mass cf. 2.1 and 2.6% of body mass per day for impala. For cattle the crude protein content of the diet ranged between 5.7 and 14.1% and its organic matter digestibility between 51 and 69%; while for impala the crude protein content of the diet varied between 10,6 ad 21,3% and its organic matter digestibility between 57 and 69%. Daily dung production was 0,7 - 1,0% of body mass for both species, while the crude protein content of the dung was 7 - 12% for cattle and 17 - 20% for impala. The mean daily mass gain through summer averaged 0,15% of body mass for cattle cf. 0,17% for impala. The conversion efficiency of assimilated energy was 5,0% for cattle and 3,8% for impala, but this difference was in part due to the much higher fat content of cattle relative to impala.	
Palavras-Chave: 	Food; Growth; Herbaceous vegetation; Impala; Savana; Savanna; Vegetacao herbacea.	
Thesagro: 	Alimento; Crescimento; Gado.	
Thesaurus Nal: 	cattle.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (33914-1) - ADC - SP - PP - SP15148 -  - 15148 - DIS