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Production indices for dual purpose cattle in central Brazil R. Bras. Zootec.
McManus,Concepta; Louvandini,Helder; Carneiro,Helena Cristina; Lima,Paulo Ricardo Martins; Neto,José Braccini.
This study examined the effects of crossbreeding low genetic potential cows of Bos indicus origin characterized by Gyr crossed with Holstein-Friesian and Simmental bulls to produce animals in a low input dual purpose system. The farm is situated near Brasilia, in the savannah region of Brazil. The climate of the region is classified as Aw by Köppen. Data was available on 1580 calvings and completed lactations of cows with three genetic types: Gyr, Holstein-Friesian × Gyr and Simmental × Gyr. The bulls ran with the cows all year round and the diet comprised of pasture (mainly Brachiaria and Andropogon) during the summer (rainy season) and milled sugar cane with added urea during the winter (dry season). A mineral salt mixture was available ad libitum. Data...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Beef cattle; Crossbreeding; Milk; Productivity; Ratios; Real fertility.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000700025
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