Vitamin a and ?-Carotene Levels in Plasma, Corpus Luteum and Follicular Fluid of Cyclic and Pregnant Cattle
Yükleniyor...
Dosyalar
Tarih
2002
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
This study was carried out to examine the relationship between the corpus luteum (CL) weight, CL and follicle diameters and progesterone, b-carotene and vitamin Alevels in reproductive organs of cattle obtained from the slaughterhouse. The b-carotene and vitamin Alevels were determined in plasma, CL and follicular fluid (FF) using a spectrophotometric method at different stages of the oestrous cycle (n ¼ 40) and at 3–6 months of pregnancy (n ¼ 10). The diameters of the CL and follicle were measured using ultrasonography. Plasma progesterone concentrations were determined by an enzyme immunoassay method. The vitamin Alevels of the plasma, CL and FF were not related to each other. The highest plasma vitamin Alevels were observed in the proestrus and oestrus, at which periods follicular activity dominates. The vitamin Alevels in the CL and FF were negatively related to the weight and diameter of the CL and the diameter of follicle, respectively. In contrast to vitamin A, b-carotene concentrations of plasma, CL and FF were significantly correlated with each other. The highest b-carotene levels in the plasma, CL and FF were found during pregnancy when there is maximal luteal function, and the b-carotene level of the CL was significantly correlated with the weight and diameter of CL. Furthermore, the intrafollicular b-carotene level was negatively correlated with the follicle diameter. There was a positive correlation between lasma progesterone level and the weight and diameter of the CL, but a negative correlation between plasma progesterone level and follicle diameter. Moreover, plasma, FF and CL b-carotene levels were positively correlated with plasma progesterone levels. This study revealed that b-carotene levels in the plasma, CL and FF were influenced by the stage of the oestrous cycle or the pregnancy and were related to bovine luteal function without depending on vitamin A.
Açıklama
Anahtar Kelimeler
Kaynak
Reproduction in Domestic Animals
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
37
Sayı
Künye
Haliloğlu, S., Başpınar, N., Serpek, B., Erdem, H., Bulut, Z., (2002). Vitamin a and ?-Carotene Levels in Plasma, Corpus Luteum and Follicular Fluid of Cyclic and Pregnant Cattle. Reproduction in Domestic Animals, (37), 96-99. Doi: 10.1046/j.1439-0531.2002.00338.x
