Progesterone concentration as an indicator of ovarian response to superovulation in Chios ewes

Amiridis, G.S.; Rekkas, C.; Fthenakis, G.C.; Vainas, E.; Lymberopoulos, A. G.; Christodoulou, V.; Belibasaki, S.

doi:10.1016/s0093-691x(01)00706-3

Cited by 14 publications

(13 citation statements)

References 20 publications

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“…On the other hand, first ultrasonographical detection of CL (Day 2.7±0.2) and days to maximum CL diameter (Day 11.6±0.5) were comparable to other goat breeds (De Castro et al, 1999). The correlation between CL diameter and progesterone concentration in Beetal goats was indicative of progesterone plasma index as has been reported in sheep (Amiridis et al, 2002). In the current study, the physiological and morphological demise of CL began concurrently from Day 17 onwards.…”

Section: Discussionsupporting

confidence: 84%

Follicular Dynamics and Changes in Plasma Estradiol-17β and Progesterone Concentrations during Estrous Cycle in Beetal Goats

Murtaza¹

2019

PVJ

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Section: Discussionsupporting

confidence: 84%

Follicular Dynamics and Changes in Plasma Estradiol-17β and Progesterone Concentrations during Estrous Cycle in Beetal Goats

Murtaza¹

2019

PVJ

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“…Concentrations of progesterone were similar between NE and EI-fed ewes with only one CL and increased in NE-fed, but not EI-fed ewes with two CL. In general, progesterone concentrations are greater in ewes with multiple CL (Amiridis et al, 2002). Decreased progesterone synthesis could be attributed to decreased cholesterol production, a precursor to progesterone, typical in livestock grazing EI fescue (Stuedemann et al, 1985).…”

Section: Discussionmentioning

confidence: 99%

Reproductive characteristics of endophyte-infected or novel tall fescue fed ewes

2006

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“…The differences in the levels of blood P4 are related mainly to the total luteal mass and not to the number of corpus luteum formed (Amiridis et al, 2002).…”

Section: Introdutionmentioning

confidence: 89%

Weight and age at puberty and their correlations with morphometric measurements in crossbred breed Suffolk ewe lambs

et al. 2010

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-The objective of this study was to identify and to correlate parameters that characterize puberty and estimate the age and weight of Suffolk ewe lambs in Mato Grosso do Sul. This study was carried out with twenty-two Suffolk ewe lambs for 256 days. Blood samples were collected from the jugular vein and centrifugated and the plasma were stored at -20°C until analysis of progesterone (P 4 ) concentration by radioimmunoassay (RIA). The morphometric measurements included: head length and width, body length, elbow height, chest perimeter, back-sternal diameter, croup length, width and height, cannon bone perimeter and shoulder and hip width, using a tape. The animals became pubertal when the plasma progesterone concentration was >1.0 ng/mL, at 34.1 ± 5.2 kg and 39.5 ± 8.5 weeks of age. Meanwhile, the lambs that did not reach puberty (37.7 ± 11.4 weeks of age) were lighter. The morphometric measurements has medium to low correlations with age and weight at puberty.Key Words: chest perimeter, progesterone, radioimmnunoassay, sheep Peso e idade à puberdade e suas correlações com medidas morfométricas em cordeiras mestiças SuffolkRESUMO -Os objetivos neste trabalho foram identificar e correlacionar parâmetros que caracterizem a puberdade e estimar a idade e o peso à puberdade de cordeiras mestiças Suffolk. Amostras de sangue de 22 borregas foram coletadas e centrifugadas e o plasma armazenado a -20 ºC para posterior análise das concentrações de progesterona (P 4 ) por meio de radioimunoensaio. As medidas morfométricas aferidas foram: comprimento e largura da cabeça; comprimento do corpo; altura de cernelha; perímetro torácico; diâmetro dorso-esternal; comprimento, altura e largura de garupa; perímetro de canela; e largura entre ísquios e ílios, utilizando-se fita métrica. Definiu-se como início da puberdade quando os animais apresentaram concentração plasmática de P 4 >1,0 ng/mL, o que ocorreu aos 34,1 ± 5,2 kg de peso vivo e 39,5 ± 8,5 semanas de idade.Entretanto, as cordeiras que não atingiram a puberdade (37,7 ± 11,4 semanas de idade) apresentaram peso menor. As medidas morfométricas apresentam médias e baixas correlações com idade e peso à puberdade.

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Progesterone concentration as an indicator of ovarian response to superovulation in Chios ewes

Cited by 14 publications

References 20 publications

Follicular Dynamics and Changes in Plasma Estradiol-17β and Progesterone Concentrations during Estrous Cycle in Beetal Goats

Follicular Dynamics and Changes in Plasma Estradiol-17β and Progesterone Concentrations during Estrous Cycle in Beetal Goats

Reproductive characteristics of endophyte-infected or novel tall fescue fed ewes

Weight and age at puberty and their correlations with morphometric measurements in crossbred breed Suffolk ewe lambs

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