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AbstractFull Text

Tick resistance was measured in yearling animals with genetic compositions varying from pure Hereford to pure Nelore from Conexão Delta G. Counts of B. microplus female ticks were made in the inner hind legs region of the body. Estimates of broad and narrow sense heritabilities were 0.23±0.063 and...

Author(s)
Cardoso, V.; Fries, L. A.; Roso, V. M.; Brito, F. V.
Publisher
Instituto Prociência, Minas Gerais, Brazil
Citation
Proceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006, 2006, pp 16-12
AbstractFull Text

Cattle tick (Boophilus microplus), horn fly (Haematobia irritans) and beef-worm (Dermatobia hominis) countings on Nellore (NE), Angus × Nellore (AN), Canchim (5/8 Charolais+3/8 Zebu) × Nellore (CN) and Simmental × Nellore (SN) naturally infested females, from July 2003 to December 2004, were done,...

Author(s)
Silva, A. M.; Alencar, M. M.; Regitano, L. C. A.; Oliveira, M. C. S.; Barioni Júnior, W.
Publisher
Instituto Prociência, Minas Gerais, Brazil
Citation
Proceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006, 2006, pp 03-82
Abstract

An account is given of bovine tick infestation control in Brazil, including strategies, herd management, use of insecticide, the effects of pasture on the development of ticks and their resistance to insecticides.

Author(s)
Furlong, J.
Publisher
EMBRAPA, Gado de Leite, Juiz de Fora, Brazil
Citation
1° Simpósio sobre Sustentabilidade da produção de leite no Leste Mineiro, 2001, pp 207-214
Abstract

A total of 1465 sets of data was obtained from B. microplus counts made in 421 naturally infested Gyr Zebu cattle sired by 38 bulls in Uberaba, Minas Gerais, Brazil. 8 counts were performed in 1 side of each animal from May 1994 to February 1996. Traits analysed were counts of engorged females ≥4.5 ...

Author(s)
Andrade, A. B. F.; Silva, R. G. da; Costa, A. J.; Rocha, U. F.; Landim, V. J. C.
Publisher
Animal Genetics and Breeding Unit, Armidale, Australia
Citation
Proceedings of the 6th World Congress on Genetics Applied to Livestock Production, Armidale, NSW, Australia, 11-16 January, 1998. Volume 27: Reproduction; fish breeding; genetics and the environment; genetics in agricultural systems; disease resistance; animal welfare; computing and information technology; tree breeding., 1998, pp 339-342
Abstract

A 28-month experiment was conducted at Valença, Rio de Janeiro, Brazil, to assess the effect of B. microplus infestations on the milk yield of 117 cows of 3 Holstein-Friesian (HF) × Guzera crossbred groups (F1, 5/8 HF and ≥15/16 HF). Cows were randomly allocated to 2 treatments during their whole...

Author(s)
Teodoro, R. L.; Lemos, A. M.; Madalena, F. E.
Publisher
Animal Genetics and Breeding Unit, Armidale, Australia
Citation
Proceedings of the 6th World Congress on Genetics Applied to Livestock Production, Armidale, NSW, Australia, 11-16 January, 1998. Volume 27: Reproduction; fish breeding; genetics and the environment; genetics in agricultural systems; disease resistance; animal welfare; computing and information technology; tree breeding., 1998, pp 177-180

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