Data/hora: 21/09/2024 13:31:24

Biblioteca(s): 	Embrapa Unidades Centrais.	
Data corrente: 	28/08/2017	
Data da última atualização: 	29/12/2017	
Autoria: 	MOLINA, L. R.; COSTA, H. N.; LEÃO, J. M.; MALACCO, V. M. R.; FACURY FILHO, E. J.; CARVALHO, A. U.; LAGE, C. F. A.	
Afiliação: 	Lívio R. Molina, Departamento de Clínica e Cirurgia Veterinária/Escola de Veterinária/Universidade Federal de Minas Gerais-UFMG; Hudson. N. Costa, Departamento de Medicina Veterinária / Pontifica Universidade Católica de Minas Gerais; Juliana M. Leão, Departamento de Zootecnia/Escola de Veterinária / UFMG; Victor M. R. Malacco, Departamento de Zootecnia/Escola de Veterinária / UFMG; Elias J. Facury Filho, Departamento de Clínica e Cirurgia Veterinária/Escola de Veterinária/Universidade Federal de Minas Gerais-UFMG; Antônio U. Carvalho, Departamento de Clínica e Cirurgia Veterinária/Escola de Veterinária/Universidade Federal de Minas Gerais-UFMG; Camila F. A. Lage, Departamento de Zootecnia/Escola de Veterinária / UFMG.	
Título: 	Efficacy of an internal teat seal associated with a dry cow intramammary antibiotic for prevention of intramammary infections in dairy cows during the dry and early lactation periods.	
Ano de publicação: 	2017	
Fonte/Imprenta: 	Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 37, n. 5, p. 465-470, maio 2017.	
Idioma: 	Inglês	
Notas: 	Título em português: Eficácia de um selante interno de tetos associado a antibiótico de vaca seca na prevenção de infecções intramamárias no período seco e início de lactação em vacas leiteiras.	
Conteúdo: 	The present study aimed to evaluate the use of an internal dry period teat seal containing bismuth subnitrate (Teatseal®, Zoetis®, Florham Park, Nova Jersey, USA) associated with a long-acting cloxacilin preparation (Orbenin® Extra dry cow, Zoetis®, Florham Park, Nova Jersey, USA), in preventing new infections during the dry-off and early postpartum period. A total of 150 Holstein cows (average production of 9,000 kg of milk per lactation), with four functional udder quarters without clinical mastitis was included in the study. All animals were dried-off 60 days before the expected calving date. Two teats positioned diagonal-contralaterally received only dry cow antibiotic, control group C (n=300) and the other two teats, treatment group T (n=300) received dry cow antibiotic and infusion with an internal teat seal. Data from SCC variable were transformed by log base-10 transformation. Duncan?s test was used accepting 5% as the level of statistical significance. The occurrence of intramammary infection (IMI) and chronicity rate, and frequency of microorganisms isolated at drying and immediately postpartum in teats of group C and group T were evaluated using a non-parametric Chi-square Test, accepting 10% as the statistical significance level. There was a decrease in the occurrence of new infections in the early postpartum in cows which the sealant was used (C=19.6%, T=11.4%). In the postpartum period, Gram-negative bacteria were isolated from 16 teats in C and seven in T. The greatest reduction was observed for Escherichia coli (8 vs 1) in group T. There was no effect using the internal sealant on the frequency of isolation of environmental Streptococus. The use of sealant reduced the prevalence of subclinical mastitis cows between drying-off and the early postpartum period (C=51% versus T=42%) and resulted in a lower somatic cel count (SCC) in the treatment group when compared with the control group (T=1,073x103, C=1,793x103). The use of the internal teat seal combined with dry cow antibiotic is effective in the prevention of IMI during the dry period and early lactation and results in the reduction of SCC in immediate postpartum period. The treatment is effective in reducing infection between dry-off and the immediate postpartum caused by major and minor pathogens. However, no effect on infections caused by contagious pathogens was observed.	
Palavras-Chave: 	Dry cow; Environmental pathogens; Lactation periods; Patógeno ambiental; SCC; Selante de teto; Teat seal.	
Thesagro: 	Antibiótico; Mamite; Vaca leiteira.	
Thesaurus Nal: 	Antibiotics; Mastitis.	
Categoria do assunto: 	--	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/163086/1/Efficacy-of-tan-internal-teat-seal.pdf	
Registro original: 	Embrapa Unidades Centrais (AI-SEDE)	
Exemplares: 	AI-SEDE - (61635-1) - UPE - AP - DD -  -  -  - DIS