Estudo das características histológicas do útero e tubas uterinas de vacas e novilhas da raça Nelore (Bos primigenius indicus)
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Data
2003-01-01
Autores
Monteiro, Cristina Maria Rodrigues [UNESP]
Farias, Eduardo Cunha
Perri, Silvia Helena Venturoli [UNESP]
Souza, Wilson Machado de [UNESP]
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Universidade de São Paulo (USP), Faculdade de Medicina Veterinária e Zootecnia (FMVZ)
Resumo
Nesta pesquisa obtivemos dados histológicos comparativos dos cornos uterinos e tubas uterinas de vacas e novilhas da raça Nelore. Foram utilizadas 30 amostras dos órgãos para cada grupo de animais, que foram fixados em formol tamponado a 10%, processados e incluídos rotineiramente em parafina. Os cortes histológicos de 6 mm foram corados com hematoxilina e eosina, com tricrômio de Mallory (para evidenciar fibras colágenas), Weigert (para evidenciar fibras elásticas) e com sais de Prata (para evidenciar as fibras reticulares). Os resultados mostraram que existem diferenças na histologia da parede uterina entre vacas e novilhas, sendo mais evidentes nas vacas. A freqüência das variações histológicas é maior para os dois cornos uterinos nas vacas. Não há diferença significativa entre as variações histológicas nos lados direito e esquerdo. As variações mais características estão presentes no endométrio e miométrio, sendo as mais conspícuas, encontradas no miométrio. Não há diferenças marcantes das variações histológicas das tubas uterinas entre vacas e novilhas e entre os lados direito e esquerdo e elas não apresentam nenhuma relação com as variações uterinas.
In this research were investigated comparative histological aspects of uterine horns and oviducts in Nelore cows and heifers. Thirty samples of each group were used, wich were fixed in 10% tamponed formol processed and embedded in paraffin. The histological sections of 6 mm were stained with hematoxilin and eosin, Mallory's trichrome ( to evidence colagens fibres), Weigert (to evidence elastic fibres) and Silver salts (to evidence reticular fibres). The results showed that exist differences in the histology of the uterine wall among cows and heifers, more evident in cows. The frequency of histological variations is higher for two uterine horns in cows. There is no significative difference among histological variations in the right and left horns. The characteristic variations are presents in the endometrium and miometrium, being the last one more conspicous. There are no differences of histological variations among cows and heifers and among the right and left oviducts and they do not present any relation to the uterine variations.
In this research were investigated comparative histological aspects of uterine horns and oviducts in Nelore cows and heifers. Thirty samples of each group were used, wich were fixed in 10% tamponed formol processed and embedded in paraffin. The histological sections of 6 mm were stained with hematoxilin and eosin, Mallory's trichrome ( to evidence colagens fibres), Weigert (to evidence elastic fibres) and Silver salts (to evidence reticular fibres). The results showed that exist differences in the histology of the uterine wall among cows and heifers, more evident in cows. The frequency of histological variations is higher for two uterine horns in cows. There is no significative difference among histological variations in the right and left horns. The characteristic variations are presents in the endometrium and miometrium, being the last one more conspicous. There are no differences of histological variations among cows and heifers and among the right and left oviducts and they do not present any relation to the uterine variations.
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Palavras-chave
Histologia, Útero, Vacas, Novilhas, Histology, Uterus, Cow, Heifer
Como citar
Brazilian Journal of Veterinary Research and Animal Science. Faculdade de Medicina Veterinária e Zootecnia / Universidade de São Paulo, v. 40, n. 1, p. 45-54, 2003.