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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Conception rate of artificially inseminated holstein cows affected by cloudy vaginal mucus, under intense heat conditions.
Autores:  MELLADO, M.
LARA, L. M.
VELIZ, F. G.
SANTIAGO, M. A. de
AVENDAÑO-REYES, L.
MEZA-HERRERA, C.
GARCIA, J. E.
Data:  2015-07-22
Ano:  2015
Palavras-chave:  Subclinical endometritis
Uterine infection
Infecção uterina
Gado leiteiro
Desempenho reprodutivo
Dairy cattle
Heat stress
Reproductive efficiency
Seasonal variation
Resumo:  The objective of this work was to obtain prevalence estimates of cloudy vaginal mucus in artificially inseminated Holstein cows raised under intense heat, in order to assess the effect of meteorological conditions on its occurrence during estrus and to determine its effect on conception rate. In a first study, an association was established between the occurrence of cloudy vaginal mucus during estrus and the conception rate of inseminated cows (18,620 services), raised under intense heat (mean annual temperature of 22°C), at highly technified farms, in the arid region of northern Mexico. In a second study, data from these large dairy operations were used to assess the effect of meteorological conditions throughout the year on the occurrence of cloudy vaginal mucus during artificial insemination (76,899 estruses). The overall rate of estruses with cloudy vaginal mucus was 21.4% (16,470/76,899; 95% confidence interval = 21.1?21.7%). The conception rate of cows with clean vaginal mucus was higher than that of cows with abnormal mucus (30.6 vs. 22%). Prevalence of estruses with cloudy vaginal mucus was strongly dependent on high ambient temperature and markedly higher in May and June. Acceptable conception rates in high milk-yielding Holstein cows can only be obtained with cows showing clear and translucid mucus at artificial insemination.

2015

Título em português: Taxa de concepção de vacas Holandesas inseminadas artificialmente e afetadas por muco vaginal turvo, sob condições de intenso calor.
Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  58006

http://www.alice.cnptia.embrapa.br/handle/doc/1020231

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/126795/1/Conception-rate-of-artificially.pdf
Editor:  Pesquisa Agropecuária Brasileira, Brasília, DF, v. 50, n. 6, p. 492-498, jun. 2015.
Relação:  Área de Informação da Sede - Artigo em periódico indexado (ALICE)
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