2015
DOI: 10.1590/1678-7540
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Morfologia e grânulos citoplasmáticos do corpo lúteo de vacas aneloradas (Bos taurus indicus) gestantes e não gestantes

Abstract:  RESUMOAvaliaram-se a proporção volumétrica dos constituintes do corpo lúteo e a distribuição de células lúteas com grânulos citoplasmáticos no corpo lúteo de animais Nelore ao longo da gestação e em animais não gestantes. Foram coletados ovários com corpos lúteos de 24 animais abatidos em frigorífico. Os animais foram distribuídos em dois grupos: gestantes e não gestantes. A idade gestacional foi determinada pela medição do comprimento apicocaudal do feto. Os ovários foram distribuídos segundo o trimestre ge… Show more

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Cited by 2 publications
(5 citation statements)
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“…There are following periods of evolution of CL during pregnancy: (1) up to 2 months of pregnancythe period of forming and acme; (2) up to 5 monthsthe period of primary senescence; (3) up to 8 monthssecondary morphofunctional acme; (4) up to calvingthe period of secondary senescence (Sawyer, 1995). Vargas et al (2015) found that the volume of the cytoplasm and the nuclear volume of luteal cells significantly decreased between the first and second trimester of pregnancy. The volume ratio of the cytoplasm to the nucleus decreased during pregnancy.…”
Section: Discussionmentioning
confidence: 94%
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“…There are following periods of evolution of CL during pregnancy: (1) up to 2 months of pregnancythe period of forming and acme; (2) up to 5 monthsthe period of primary senescence; (3) up to 8 monthssecondary morphofunctional acme; (4) up to calvingthe period of secondary senescence (Sawyer, 1995). Vargas et al (2015) found that the volume of the cytoplasm and the nuclear volume of luteal cells significantly decreased between the first and second trimester of pregnancy. The volume ratio of the cytoplasm to the nucleus decreased during pregnancy.…”
Section: Discussionmentioning
confidence: 94%
“…In the absence of fertilization, marked cyclic changes progress in the ovarian glands. By the twelfth day after ovulation, the CL reaches its acme (Jaśkowski, 2019;Neves and Maques, 2002;Safonov, 2020;Vargas et al, 2015). It is believed that the mass of the CL after ovulation increases due to luteocytes hypertrophy and not to their hyperplasia, i.e., an increase in their number (Parkinson et al, 1994).…”
Section: Discussionmentioning
confidence: 99%
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