نتایج جستجو برای: superovulated females
تعداد نتایج: 121269 فیلتر نتایج به سال:
We hypothesized that stimulatory and superovulatory treatments, using equine chorionic gonadotropin (eCG), modulate the expression of genes related to insulin, cellular modelling and angiogenesis signaling pathways in the bovine corpus luteum (CL). Therefore, we investigated: 1-the effect of these treatments on circulating insulin and somatomedin C concentrations and on gene and protein express...
Two studies were conducted to produce multiple births in beef females and determine growth performance to 90 days of age of early weaned and artificially reared calves. The effects of early weaning on postpartum reproductive activity of dams producing single or multiple births were also determined. The studies involved 52 nulliparous heifers treated with 6.2 mg FSH and 55 lactating 2-year-old d...
BACKGROUND In mammals, the reproductive tract plays a crucial role in the success of early reproductive events and provides an optimal microenvironment for early embryonic development. However, changes in the reproductive tract environment associated with controlled ovarian hyperstimulation and the influence on the embryo transcriptome profile have not been investigated. Therefore, we investiga...
The objective was to determine the effect of dietary intake on follicle and oocyte morphology in unstimulated and superovulated ewes. Fifty-four ewes were fed grass meal at 0.5, 1.0 or 2.0 times maintenance energy requirements (M) for 32 days. Oestrous cycles were synchronized using progestagen pessaries and either unstimulated or superovulated with 200 mg pig FSH. The ewes were killed and ovar...
The present study was aimed to study the effect of an ovine follicular fluid peptide on ovarian follicle and good oocyte numbers and weights of ovary, uterus, liver, pancreas and kidney in rats, R. norvegicus. A 30.1 kDa peptide was isolated from ovine follicular fluid by ammonium sulphate precipitation and then gel filtration. The peptide was tested at various levels in normal (22 and 36 day-o...
The aim of this study was to explore the real time changes in the vascularity of growing superovulated follicles and to establish whether the blood flow of growing follicles can affect superovulation variability. Eight Holstein-Freisian cows received PGF2α 10 days after spontaneous ovulation. After 36 hours, all follicles larger than 5 mm were aspirated at day 0 (D0). Animals were given 28 Armo...
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