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Registro Completo
Biblioteca(s):  Embrapa Caprinos e Ovinos.
Data corrente:  01/08/1992
Data da última atualização:  28/11/2023
Autoria:  YAO, T. S.; EATON, O. N.
Título:  Postnatal growth and histological development of reproductive organs in male goats.
Ano de publicação:  1954
Fonte/Imprenta:  American Journal of Anatomy, v. 95, n. 3, p. 401-431, Nov. 1954.
Idioma:  Inglês
Conteúdo:  The testis, epididymis, ductus deferens, seminal vesicle, prostate, bulbo-urethral gland, and penis, from 38 male goats, 7 to 210 days of age were studied for their growth and development. Growth of the testis, epididymis, seminal vesicle, and penis was found to be well correlated with the slaughter weight up to 114 days of age, but with the birth weight only within the period from 90 to 114 days of age. Microscopic observations on the testis, epididymis, ductus deferens, seminal vesicle, prostate, bulbo-urethral gland, and penis were made and sections from these organs at different ages are described. It was found that the growth of the testis could be divided into three stages: from birth to 80 days, growth at a definite and uniform rate; from 80 to 120 days, correlated with birth weight; and from 120 days on, no relation between growth of the testis and birth weight. The development of the urethral process and the growth of the seminiferous tubules also agree with these tliree stages. The growth of the seminiferous tubules is closely correlated with the weight of the testis rather than with the age of the animal. The large primordial germ cells in tlie young animals seemed to be tlie remnants of the embryonic large cells which disappeared by 60 days of age. The division and growth of the epithelial germ cells after birth produces the primary spermatocytes only. Spermatozoa appeared at the age of 92 days in male goats, much earlier than in rams, bulls, and boars. The whole... Mostrar Tudo
Palavras-Chave:  Andrologia; Período pós-natal; Postnatal period.
Thesagro:  Caprino; Histologia; Reprodução.
Thesaurus Nal:  Goats; Reproduction; Spermatozoa; Testes.
Categoria do assunto:  L Ciência Animal e Produtos de Origem Animal
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Caprinos e Ovinos (CNPC)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status URL
CNPC8923 - 1ADDAP - DD
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