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Results 301 - 350 of 1264
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Proudfoot K L - - 2013
Cows are often moved from a group to an individual maternity pen just before calving. However, it is unclear whether moving cows during labor may alter their behavior or affect the progress of labor. The aim of this study was to determine if moving cows to a maternity pen at ...
Wallace J M - - 2013
INTRODUCTION: The weight of the placenta is a crude but useful proxy for its function in vivo. Accordingly extremes of placental weight are associated with adverse pregnancy outcomes while even normal variations in placental size may impact lifelong health. Centile charts of placental weight for gestational age and gender are used ...
Torres A - - 2013
Using a novel in vivo model considering a low developmental competence embryo (demi-embryo) and a subnormal fertility recipient (lactating high-yielding dairy cow), this experiment evaluated the effect of human chorionic gonadotrophin (hCG) treatment at embryo transfer (ET) on embryonic size at implantation, embryonic survival and recipient plasma progesterone (P(4) ) ...
Pereira M H C - - 2013
Four experiments evaluated the effects of vaccination against bovine herpesvirus-1 (BoHV-1), bovine viral diarrhea virus (BVDV), and Leptospira spp. on reproductive performance of lactating dairy cows without (experiments 1, 2, and 3) or with previous vaccination against these diseases (experiment 4). Cows were assigned to a fixed-time AI protocol (FTAI; ...
Bridges G A - - 2013
Pregnancy failure in livestock can result from failure to fertilize the oocyte or embryonic loss during gestation. The focus of this review is on cattle and factors affecting, and mechanisms related to, uterine insufficiency for pregnancy. A variety of factors contribute to embryonic loss and it may be exacerbated in ...
Jinks E M - - 2013
In postpartum beef cows, GnRH-induced ovulation of small dominant follicles decreased pregnancy rates and increased late embryonic/fetal mortality. In Exp. 1, single ovulation reciprocal embryo transfer (ET) was utilized to examine the relationship between preovulatory serum concentrations of estradiol at GnRH-induced ovulation, in donor and recipient cows, and establishment and ...
Mulliniks J T - - 2013
Two studies were conducted to evaluate the effects of post-weaning management of British crossbred heifers on growth and reproduction. In Exp. 1, 239 spring-born, crossbred heifers were stratified by weaning BW (234 ± 1 kg) and allotted randomly to 1 of 2 treatments. Treatments were fed at a rate equivalent ...
Bruno R G S - - 2013
The objective was to evaluate the effects of GnRH or PGF(2α)-based synchronization and resynchronization programs on fertility in lactating dairy cows. For experiment 1, cows (n = 1,521) were presynchronized with 2 injections of PGF given at 36 and 50 DIM and assigned to 1 of 3 protocols: Ovsynch [OVS; ...
Santolaya Jacobo L - - 2013
Objective:In this study, we sought to characterize the tumor necrosis factor α (TNFα) baseline operational capacity in mature fetuses and their mothers prior to the onset of labor.Materials and Methods:We used an experimental pregnant nonhuman primate model to measure the plasma concentration of TNFα, TNF transmembrane receptor I (TNFRI), and ...
Hsu Wen-Yin - - 2013
This study determined factors of preterm delivery in Taiwan. Healthy women (n=520, age 29.1±4.2 y) at 8-12 weeks of pregnancy were recruited from prenatal clinics. Background information, anthropometrics, biochemical parameters, and dietary intake, collected by 24 h-recall were obtained from the first, second, and third trimesters to delivery. Clinical outcomes ...
Luo Zhong-Cheng - - 2013
It remains uncertain whether leptin and adiponectin levels are correlated in maternal vs. fetal circulations. Little is known about whether leptin and adiponectin affect insulin sensitivity during fetal life. In a prospective singleton pregnancy cohort (n = 248), we investigated leptin and adiponectin concentrations in maternal (at 24-28 and 32-35 ...
Koktener A - - 2013
Pregnancy-like (pseudolactational) hyperplasia (PLH) is an uncommon lactational change occurring independently from pregnancy and lactation. PLH has been incidentally found during breast biopsies. We report two different cases of PLH with their clinical, radiologic, and pathologic findings.
Morrison Katherine M - - 2013
BACKGROUND: The influence of multiple maternal and pregnancy characteristics on offspring cardiometabolic traits at birth is not well understood and was evaluated in this study. METHODS AND FINDINGS: The Family Atherosclerosis Monitoring In earLY life (FAMILY) Study prospectively evaluated 11 cardiometabolic traits in 901 babies born to 857 mothers. The ...
Serón-Ferré María - - 2013
Disruption of the maternal environment during pregnancy is a key contributor to offspring diseases that develop in adult life. To explore the impact of chronodisruption during pregnancy in primates, we exposed pregnant capuchin monkeys to constant light (eliminating the maternal melatonin rhythm) from the last third of gestation to term. ...
Xinxo Sonela - - 2013
Maternal nutritional status of pre pregnancy and gestational weight gain affects the preterm birth. The association between maternal nutritional status of pre pregnancy and preterm birth appears to be complex and varied by studies from different countries, thus this association between the gestational weight gain and preterm birth is more ...
Titapant Vitaya - - 2013
To compare the gestational weight gain of healthy Thai singleton pregnant women with the U.S. Institute of Medicine (IOM) recommendation. One thousand eight hundredforty nine medical records ofuncomplicated singleton pregnant women who delivered at Siriraj Hospital between January 2007 and November 2010 were reviewed. All subjects were divided into four ...
Bennett Sarah E - - 2013
The first aim of this study was to assess 25-hydroxy vitamin D (25OHD) concentrations in women with type 1 diabetes (T1DM) during pregnancy, post-delivery and also foetal (cord blood) 25OHD concentrations and to examine relationships between these. The second aim of the study was to investigate potential interactions between maternal ...
Wei Wei - - 2013
The main object of the present study was to explore the effect on thyroidal proteins following mild iodine deficiency (ID)-induced maternal hypothyroxinemia during pregnancy and lactation. In the present study, we established a maternal hypothyroxinemia model in female Wistar rats by using a mild ID diet. Maternal thyroid iodine content ...
Li Minglan - - 2013
Maternal obesity is associated with obesity and metabolic disorders in offspring. However, intervention strategies to reverse or ameliorate the effects of maternal obesity on offspring health are limited. Following maternal undernutrition, taurine supplementation can improve outcomes in offspring, possibly via effects on glucose homeostasis and insulin secretion. The effects of ...
Yuan P - - 2013
We attempted to evaluate maternal thyroid function in a new self-sequential longitudinal reference interval (SLRI) which we established recently. By this method, we analysed the correlation between pregnancy outcome, neonatal thyroid stimulating hormone (TSH) level and maternal thyroid diseases. A total of 1744 pregnant women participated in the study and ...
Stamm Rosemary A - - 2013
Folate is a B-vitamin with particular importance during reproduction due to its role in the synthesis and maintenance of DNA. Folate is well known for its role in preventing neural tube defects (NTDs) during the periconceptional period. There is also an increased need for folate throughout pregnancy to support optimal ...
Taylor Marnie - - 2013
Arsenobetaine (ASB) is the major form of arsenic (As) in seafood sources such as molluscs and fish. Limited data demonstrated that ASB toxicity in mammals is minimal; however, data on possible reproductive effects are lacking. This study investigated the tissue distribution and developmental effects of ASB during pregnancy, early postnatal ...
Al Mamun Abdullah A School of Population Health, The University of Queensland, Brisbane, - - 2013
We have investigated the prospective association between excess gestational weight gain (GWG) and development of diabetes by 21 years post-partum using a community-based large prospective cohort study in Brisbane, Australia. There were 3386 mothers for whom complete data were available on GWG, pre-pregnancy BMI and self-reported diabetes 21 years post-partum. ...
Er Ayse A Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Selcuk, 42075 Konya, - - 2013
The aim of this study was to determine the effect of azithromycin on LPS-induced pregnancy loss. Thirty-six pregnant female Wistar rats were divided into 4 equal groups as follows: control group, where 0.3 mL of normal saline solution was administered intravenously on day 10 of pregnancy; azithromycin group, where azithromycin was ...
Hamdy A M AM Pediatrics Department, Faculty of Medicine, Ain Shams University, Cairo, - - 2013
Background. Vitamin A deficiency (VAD) during pregnancy represents a major public health problem in developing countries. Anemia is a common consequence of VAD. We aimed to measure serum retinol concentrations of a sample of poor Egyptian mothers and correlate it with their Hb% and cord Hb%. Methods. This cross-sectional study ...
McCoard Sue S AgResearch Grasslands, Private Bag 11008, Palmerston North, 4442 New - - 2013
The objective of this study was to evaluate the effects of parenteral administration of L-arginine (Arg) to well-fed twin-bearing ewes from day (d) 100 of pregnancy to birth on fetal growth, body composition and neonatal behavior. Ewes received an i.v. bolus of either 345 μmol Arg-HCl/kg bodyweight or saline solution ...
Sengpiel Verena V Department of Obstetrics and Gynaecology, Sahlgrenska Academy, Sahlgrenska University Hospital/Östra, SE-416 85 Gothenburg, Sweden. - - 2013
Pregnant women consume caffeine daily. The aim of this study was to examine the association between maternal caffeine intake from different sources and (a) gestational length, particularly the risk for spontaneous preterm delivery (PTD), and (b) birth weight (BW) and the baby being small for gestational age (SGA). This study ...
Campanile Giuseppe - - 2012
The use of sexed semen technology in buffaloes is nowadays becoming more and more accepted by farmers, to overcome the burden of unwanted male calves with related costs and to more efficiently improve production and genetic gain. The aim of this study was to verify the coupling of some variables ...
Bisson M - - 2012
What is already known about this subject ● A healthy life begins in utero and a healthy pregnancy requires a fit and healthy mother. ● Physical activity during pregnancy provides a stimulation that is essential for promoting optimal body oxygenation and composition as well as metabolic fitness during pregnancy. ● Although a higher ...
Sá Filho Manoel F - - 2012
The objective was to compare reproductive performance of breeding programs that used natural service (NS), AI after estrus detection (ED), and timed AI (TAI). In experiment 1, 597 suckled beef cows were randomly allocated to one of four groups. Cows in the TAI+NS group (N = 150) were bred by ...
Giordano J O - - 2012
Our objectives were to assess (1) the economic value of decreasing the interval between timed artificial insemination (TAI) services when using a pregnancy test that allows earlier identification of nonpregnant cows; and (2) the effect of pregnancy loss and inaccuracy of a chemical test (CT) on the economic value of ...
Asbjörnsdóttir Björg B Center for Pregnant Women with Diabetes, Rigshospitalet, Copenhagen, Denmark. - - 2013
Since January 2008, obese women with type 2 diabetes were advised to gain 0-5 kg during pregnancy. The aim with this study was to evaluate fetal growth and perinatal morbidity in relation to gestational weight gain in these women. A retrospective cohort comprised the records of 58 singleton pregnancies in ...
Thame Minerva - - 2012
The objective was to investigate the association of maternal weight, height and body composition with fetal growth. We recruited 425 women at the University Hospital of the West Indies, Jamaica, who had singleton pregnancies, were less than 15 weeks gestation and had no systemic illness. Maternal weight, height and skinfold ...
Robinson D L - - 2012
This paper reviews results of studies on effects of fetal programming and maternal nutrition during pregnancy on growth, efficiency, carcass, muscle, and meat quality characteristics of cattle. It includes results from our Australian Beef Cooperative Research Centre studies on factors such as chronic severe nutritional restriction from approximately d 80 ...
Paten A M - - 2012
Studies using sheep models indicate that the fetal mammary gland is sensitive to maternal nutrition during gestation; however, results have been inconsistent and do not identify critical feeding periods. This study aimed to clarify previous findings by partitioning the period of maternal nutritional manipulation into two stages; early and mid-to-late ...
García-Ispierto I - - 2012
The present study sought to determine: (i) the effects of Neospora caninum infection and twin pregnancy on plasma pregnancy-associated glycoprotein-2 (PAG-2) concentrations throughout pregnancy and (ii) whether plasma PAG-2 concentrations could predict abortion in N. caninum-infected cows. The study was performed on a commercial Holstein-Friesian dairy herd in northeastern Spain and ...
Mallory D A - - 2012
The objective was to compare pregnancy per AI (P/AI) with conventional (CON) or sex-sorted (SS) semen from a single sire within a fixed-time AI (FTAI) program designed for dairy heifers. Holstein heifers (n = 240) were assigned to treatment (CON or SS) according to body weight and reproductive tract score. ...
Chebel R C - - 2012
The objectives of this experiment were to determine the speed at which cows that had their estrous cycle presynchronized with a GnRH or PGF(2α) injection are reinseminated and become pregnant. Furthermore, this experiment aimed to determine whether treatment with a controlled internal drug-releasing (CIDR) insert during the timed artificial insemination ...
Fontaine Emmanuel - - 2012
In mammalian species, the connection between reproduction and nutrition is undeniable and illustrated by numerous publications: its role concerning regulation of hormonal secretions, fertility, pregnancy outcome, lactation and neonatal development indeed retains the attention of the scientific community. The interest on the influence of nutrition in dog and cat reproductive ...
Nakamura Y - - 2012
Evaluation of postpartum fertility in cows is important for the efficient management of reproduction. DG29™ enzyme-linked immunosorbent assay (ELISA) kit (Conception, Animal Reproduction Technologies, Canada) measures the level of pregnancy-related glycoproteins in blood that are linked to pregnancy in the bovine species. The proteins are known to persist in the ...
Romo S - - 2012
The objective of this research was to evaluate the proportion of single and double births, including the sex of the offspring obtained, after the transfer of two IVF-produced embryos using sexed semen. Bos indicus cows (n=25) under free-range grazing in the humid tropical zone of Mexico, with body condition scores ...
Scolari S - - 2012
The follicular fluid (FF) microenvironment consists of serum components and follicular cell secretions, which are essential for oocyte maturation, preparing it for fertilization. Although very important, the biochemical composition of the follicular fluid is still poorly characterised. The hypothesis is that the lipid composition of the follicular fluid on Day ...
Maturana Filho M - - 2012
Disorders related to oxidative metabolism, which occur in the production cycle of high-producing dairy cows (HPC) are more frequent during the transition period and early lactation. Blood concentrations of the enzyme superoxide dismutase (SD) are closely related to the activity of stabilizing conditions of oxidative stress (OS). It is very ...
Gentry L R - - 2012
Heritability of reproductive traits is relatively low, leaving only management strategies as an alternative to affect reproductive efficiency in beef cattle. The use of assisted reproductive technologies such as fixed-timed AI (FTAI) offers the ability to increase reproductive efficiency through selection of superior genetics and manipulation of calving dates through ...
Jeong J K - - 2012
Early postpartum cyclicity is related to subsequent fertility. This field study evaluated the effect of gonadotropin-releasing hormone (GnRH) administration around the first postpartum month on subsequent reproductive performance in dairy cows. Holstein dairy cows underwent ultrasonography at 30.0 (±6) days postpartum to determine the existence of ovarian structures including corpus ...
Detterer J - - 2012
After the pioneering work of Rostand (1946 CR Acad. Sci. III 222, 1524-1525) and Polge et al. (1949 Nature 164, 666-669) on semen cryopreservation and the reports on the first live young born after storage of mouse embryos for up to 8 days (Whittingham et al. 1972 Science 178, 411-414) ...
García Mitacek Mc - - 2012
The objective of this study was to evaluate the efficacy of cloprostenol (CLO) or aglepristone (ALI) for pregnancy termination in queens at 21-22 and 35-38 days of gestation. Two experiments (EXP) were carried out to accomplish this aim. Thirty-seven 12- to 14-month-old mixed breed queens were used in a randomized design. ...
Pinto T L C - - 2012
The use of lactating dairy cows as ovum pick-up (OPU)/IVF-derived embryo recipients in large-scale embryo transfer programs may be limited by the effects of low progesterone concentrations on the uterine environment and subsequent embryo development. It was hypothesized that the injection of a GnRH analogue on the day of embryo ...
Richard H - - 2012
The purpose of this study was to determine the effectiveness of increasing progesterone (P4) concentrations during early pregnancy, by supplementing a low dose of Regu-Mate(®) (Intervet, Millsboro, DE, USA) on Days 3, 4, and 5, post-ovulation to AI mares. Sixty-three AI-bred mares were randomly allocated to 1 of 2 treatment ...
Gómez E - - 2012
Bilateral asymmetry in the cow affects ovarian function, uterine horn morphology, pregnancy, and embryonic sex. However, many aspects and molecular mechanisms of such laterality remain obscure. The objective of this work was identifying new traits of ovarian and uterine asymmetry, as based on oestrus and ovarian monitoring, P4 concentrations, early ...
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