| Registro completo |
| Provedor de dados: |
Ciência Rural
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| País: |
Brazil
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| Título: |
Microbiological and functional evaluation of an alternative device (OB®) for estrous synchronization in ewes
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| Autores: |
Martins,Leonardo Tondello
Santos Neto,Pedro Claudino dos
Gaudêncio Neto,Saul
Rauber,Lúcio Pereira
Bertolini,Marcelo
Vieira,Arnaldo Diniz
Mezzalira,Alceu
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| Data: |
2010-02-01
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| Ano: |
2010
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| Palavras-chave: |
Intra-vaginal device
CIDR®
Sponge
Progestin
Vaginitis
Ewe
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| Resumo: |
The use of synthetic progestagens released by vaginal devices is an important tool to overcome the reproductive seasonality in sheep, but cost and/or subsequent vaginitis are limiting factors for their use. To identify economic, simple and innocuous alternative vaginal devices for estrous synchronization/induction protocols in sheep, this study aimed to evaluate the microbiological and functional viability of the human vaginal tampons (OB®) impregnated with medroxyprogesterone acetate (MAP) on reproductive performance of ewes. The study compared them with commercial vaginal inserts (CIDR®) and polyurethane sponges impregnated with MAP. In Experiment 1, the device loss rate, the degree of vaginitis during the device removal, the count and identification of bacterial colonies at the device insertion and removal, and efficiency in estrous synchronization and estrus temporal distribution were evaluated. Pubertal ewes at the beginning of the breeding season were randomly allocated to three experimental groups: CIDR®, PSP (polyurethane sponge) and OB®. No device losses occurred in any group, but the use of OB® caused milder signs of vaginitis than polyurethane sponges, with a similar vaginal bacterial growth and microbiota than the CIDR group. The estrus distribution was more disperse in the CIDR than PSP or OB groups. In Experiment 2, pregnancy rates using CIDR® or OB® devices were compared, with estrus manifestation (85.4% and 89.8%) and pregnancy rates (58.3% and 49.0%) being similar between groups (P>0.05), respectively. In conclusion, the use of human intra-vaginal tampons (OB®) impregnated with MAP was proven highly hygienic, practical and effective as a low-cost alternative for estrous synchronization and AI in sheep.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000200021
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| Editor: |
Universidade Federal de Santa Maria
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| Relação: |
10.1590/S0103-84782010000200021
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| Formato: |
text/html
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| Fonte: |
Ciência Rural v.40 n.2 2010
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| Direitos: |
info:eu-repo/semantics/openAccess
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