Data/hora: 14/05/2024 13:38:44

Biblioteca(s): | Embrapa Caprinos e Ovinos.
Data corrente: | 01/08/1992
Data da última atualização: | 08/05/2023
Autoria: | QUINLAN J.; MARE, G. S.; ROUX, L. L.
Título: | A study of the duration of motility of spermatozoa in the different divisions of the reproductive tract of the Merino ewe.
Ano de publicação: | 1933
Fonte/Imprenta: | Ondersteport Journal Veterinary Sciency Animal Industry, v. 1, p. 135-145, 1933.
Idioma: | Inglês
Conteúdo: | The present experiments were undertaken to ascertain whether, by isolating spermatozoa in the uterine horns and the Fallopian tubes, an accurate estimate of the duration of their vitality in the different divisious of the reproductive tract could be made; that is to observe, from a point of view o motility, whether the secretions from the vagina, uterus, uterine horns, and Fallopian tubes act detrimentally as compared with the secretion of the cervix. In a previous paper the authors (1932) discussed the vitality of spermatozoa in the genital tract of the Merino ewe, with special reference to its practical application in breeding. During that series of experiments it became apparent that the spermatozoa survived longer in the cervix than in the other divisions of the reproductive tract in the Merino ewe. It appeared that the secretions of the vagina and the divisions of the genital tract cranial to the cervix were, in comparison with the cervix, definitely unfavourable to the life of spermatozoa. In the cervix alone did the secretion appear to be favourable. It was therefore suggested t hat the cervix of the Merino ewe acts as a reservoir for spermatozoa., where they are maintained under favourable conditions pending ovulation and the arrival of an available ovum in the Fallopian tube. The present experiments were undertaken to ascertain whether, by isolating spermatozoa in the uterine horns and the Fallopian tubes, an accurate estimate of the duration of their vitality in the diHerent divisions of the reproductive tract could be made ; tl1at is to observe, from a point of view of motility, whether the secretions from the vagina, uterus, uterine horns, and Fallopian tubes act detrimentally as compared with the secretion of the cervix.
Palavras-Chave: | Motilidade; Motility.
Thesagro: | Espermatozóide; Fisiologia animal; Ovino; Reprodução animal.
Thesaurus Nal: | Animal reproduction; Sheep; Spermatozoa.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
Registro original: | Embrapa Caprinos e Ovinos (CNPC)
Exemplares: | CNPC - (7109-1) - ADD - AP - DD -  -  -  - DIS