Data/hora: 07/06/2024 18:27:19

Biblioteca(s): | Embrapa Gado de Corte.
Data corrente: | 27/03/2003
Data da última atualização: | 11/09/2007
Autoria: | BIANCHIN, I.; ALVES, R. G. O.
Afiliação: | Embrapa Gado de Corte (Campo Grand, MS).
Título: | Mosca-dos-chifre, Haematobia irritans: comportamento e danos em vacas e bezerros Nelore antes da desmama.
Ano de publicação: | 2002
Fonte/Imprenta: | Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 22, n. 3, p. 109-113, jul./set.. 2002.
Idioma: | Português
Notas: | CNPGC.
Conteúdo: | The hornfly and losses caused by it in Nellore cows and pre-weaning calves where studied, using two groups of 60 animals each, one group with a natural infestation and the other without hornfly, during four consecutive years. It was seen that the number of flies on the cows did not exceed an average of 80 flies/animal in all years of observation. The majority of the cows (83%) had few flies, whereas 17% had larger numbers. The calves were infested with few flies. Rainfall in excess of 100 mm during short periods diminished fly infestation. Weight gain in the cows without flies (treated with insecticides) as well as their calves was greater than in the control cows, but not statistically significant (P>0.05). Mean percentage pregnancy during the four years was 15% more in treated cows than the non-treated animals, and this difference was probably due to the infestation of the bulls.
Palavras-Chave: | Bovino de corte; Control; Controle; Horn fly; Mosca-dos-chifres; Nelore.
Thesagro: | Epidemiologia; Ganho de Peso; Haematobia Irritans.
Thesaurus Nal: | beef cattle; epidemiology; Nellore; weight gain.
Categoria do assunto: | --
Registro original: | Embrapa Gado de Corte (CNPGC)
Exemplares: | CNPGC - (10039-1) - UPC - AP - -- - 636.08905 -  - v.22, n.3 - DIS