Title:	Identification of Sindhi cows that are susceptible or resistant to Haematobia irritans.
Authors:	MEDEIROS, M. A. de BARROS, A. T. M. de RIET-CORREA, F. MARQUES, A. R. LOPES, J. R. G. VIEIRA, V. D. MIRABALLES, C.
Affiliation:	Márcia Alves de Medeiros, Universidade Federal de Campina Grande - UFCG/Hospital Veterinário/Centro de Saúde e Tecnologia Rural ANTONIO THADEU MEDEIROS DE BARROS, CNPGC Franklin Riet-Correa, Instituto Nacional de Investigación Agropecuaria – INIA/Plataforma de Salud Animal – PSA Ana Rita Marques, Instituto Nacional de Investigación Agropecuaria – INIA/Plataforma de Salud Animal – PSA José Radmácyo Gomes Lopes, Universidade Federal de Campina Grande - UFCG/Hospital Veterinário/Centro de Saúde e Tecnologia Rural Vanessa Diniz Vieira, Universidade Federal de Campina Grande - UFCG/Hospital Veterinário/Centro de Saúde e Tecnologia Rural Cecilia Miraballes, Instituto Nacional de Investigación Agropecuaria – INIA/Plataforma de Salud Animal – PSA.
Date Issued:	2019
Citation:	Brazilian Journal of Veterinary Parasitology, v. 28, n. 3, p. 465-472, july.-sept. 2019.
Description:	To identify susceptible and resistant Haematobia irritans cows, horn flies were counted biweekly for 3 years in a herd of 25 Sindhi cows. Repeated measures linear mixed models were created including cow as a random factor. The results were analyzed by: 1) observing horn fly counts, considering fly-susceptible cows with infestations appearing in the upper quartile more than 50% of the weeks and in the lower quartile less than 20% of the weeks, and fly-resistant cows those that the number of flies was in the lower quartile more than 50% of the weeks and in the upper quartile less than 20%; 2) by the best linear unbiased predictions (BLUPs), to evaluate the cow effect on fly counts. Fly-susceptible cows were those in which the infestation appeared in the 90th percentile of the BLUPs, whereas fly-resistant cows appeared in the 10th percentile. For the observational method the individuals identified as resistant varied between 8% and 20% and 8% to 12% were susceptible. For the BLUP method, the rates of susceptible and resistant cows were 12%. The agreement among methods suggests that susceptible cows can be identified by observations of fly counts, allowing for selective breeding, culling or treatment.
Thesagro:	Mosca dos Chifres Bovino Controle Integrado
Keywords:	Horn fly Bovines Animal selection Integrated control Seleção animal
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPGC)