Perfomance of beef heifers of de various genetic groups, supplemented or not, in coastcross pastures.

The objective of this was to determine whether perfomance of beef heifrs of different genetic groups was affected by breed x nutriotional environment interactions. Sixty four weaned heifrs, 16 per genetic group: 1/2 angus + 1/2 Nellore (AN), 1/2 Canchim + 1/2 Nellore (CN), 1/2 Simmental + 1/2 Nellore (SN) and pure Nellore ((NE), were used with or without 3.0KG of concentrate. animal . day in a fertilized coastcross pasture under ratational grazing system. There were effects of genetic group and supplentation (P<0.05) on the weight and age at first estrusbut there was no interaction betweem then. In a rotational grazing sytem wth 4000kg of available dry matter per hectare with 13% of crude protein, the crossbres AN, supplemented or not was more precocious (111 days) than Nellore heifers, showing the firts estrus at 356 days of age and 324kg of live weight.

Bibliographic Details

Main Authors:	RODRIGUES, A. de A., CRUZ, G. M. D., BARBOSA, R. T., ALENCAR, M. M. de, CORREA, L. de A., OLIVEIRA, G. P. de
Other Authors:	ARMANDO DE ANDRADE RODRIGUES, CPPSE; GERALDO MARIA DA CRUZ, CPPSE; ROGERIO TAVEIRA BARBOSA, CPPSE; MAURICIO MELLO DE ALENCAR, CPPSE; LUCIANO DE ALMEIDA CORREA, CPPSE; GILSON PEREIRA DE OLIVEIRA, CPPSE.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2001-02-19
Subjects:	Supplementation, Beef catle, Ageat pubert, Pastejo rotacionado, suplementacao, Idade de purbedade, Cynodon Dactylon, rotational grazing,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/45259
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