نتایج جستجو برای: season of conception
تعداد نتایج: 21169076 فیلتر نتایج به سال:
OBJECTIVE The aim of this study was to determine prevalence and risk factors of hypospadias in newborn infants of a private hospital in Mashhad city located in northeast Iran. METHODS All live birth deliveries in maternity hospital were enrolled from Oct 2006 to Sep 2008. All hypospadias cases were compared with the next male live births for possible risk factors. This study included only sol...
This experiment aimed to evaluate the effect of calcium soap of fatty acid (CSFA) supplementation on serum biochemical and hormones and ovarian activity during out-of-the-breeding season in ewes. Twelve crossbred ewes, 2-3 years of age and weighting 45-55 kg, were allocated into two equal groups. The first group was control and the other was treated with 50 g/head of CSFA. All ewes were fed bas...
The influence of pregnant mares' serum gonadotropin (PMSG) on reproductive performance of sheep bred by artificial insemination (AI) was studied in the anestrous and estrous seasons. Ewes were treated with progestogenimpregnated intravaginal sponges in June and October. One-half of the ewes in each trial received PMSG at sponge removal and were inseminated 55 h after sponge removal. One-half of...
This study compared the efficiency of a five-day or standard (nine-day) progesterone-based regimen combined with equine chorionic gonadotrophin (eCG) in a fixed-time AI (FTAI) protocol for dairy cows. The data examined were derived from 3577 inseminations conducted in three dairy herds. Animals with no estrus signs detected over 21 days were randomly assigned to a PRID-9 or PRID-5 group. Cows i...
Human sleep-wake cycles are entrained by both natural and artificial light-dark cycles. However, little is known regarding when and how the photoperiod changes entrain the biological clock after conception. To investigate the dependence of sleep patterns in young infants on the natural and artificial light-dark cycles, 1,302 pairs of one-month-old infants and their mothers were asked to answer ...
background: there is an upward trend for parents to resort to assisted reproductive technology (art) treatment due to delayed childbirth or birth difficulties. objective: this study investigates the pregnancy health and birth outcomes of women who underwent art and analyzes the factors that influence birth weight to become<10 percentile when undergoing art. materials and methods: this study ana...
No report has been published on the economical losses associated with errors in oestrus detection in cows under Iranian intensive dairy management. The following study was carried out to determine the accuracy of oestrus detection by farmers using artificial insemination in Shiraz dairy farms. Milk samples were collected from 179 Holstein milking cows at the time of artificial insemination. Mil...
Philosophers have often misunderstood Kierkegaard’s views on the nature and purposes of God due to a fascination with his earlier, pseudonymous works. We examine many of Kierkegaard’s later works with the aim of setting forth an accurate view on this matter. The portrait of God that emerges is a personal and fiercely loving God with whom humans can and should enter into relationship. Far from a...
Prior to 1938 no form of oral hormonal contraception was possible as none of the then availablehormones were active when given orally. The era of oral contraception commenced withthe reports of Pincus et al (3). The contraceptive pills used today contain a synthetic oestrogenand a synthetic progestational agent. Oestrone and oestradiol were available prior to 1938as esters but these were active...
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