Endocrine changes in late bovine pregnancy with special emphasis on fetal well-being

Kindahl, H.; Kornmatitsuk, Bunlue; Königsson, K; Gustafsson, H.

doi:10.1016/s0739-7240(02)00167-4

Cited by 63 publications

(56 citation statements)

References 24 publications

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“…This hypothesis is supported by the positive correlation between maternal plasma oestrone sulphate concentrations after day 195 of gestation, and neonatal viability, calf birth weight and placental weight (Zhang et al, 1999). Additionally, dams of weak, growth-retarded calves do not show the expected (Kindahl et al, 2002b) pre-partum increase in oestrogens (Ogata et al, 1999). Preliminary data in a study of pregnancies from a bull associated with a high percentage of stillborn calves showed low maternal plasma oestrone sulphate levels, smaller cotyledons and higher placental weight, compared to pregnancies fathered by a normal bull (Kindahl et al, 2002a,b).…”

Section: Hormonal/chemical Monitoringmentioning

confidence: 92%

Fetal death: comparative aspects in large domestic animals

Jonker

2004

Animal Reproduction Science

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Although the majority of pregnancy failures occur during the embryonic period, reports indicate that approximately 5% of detected pregnancies are lost during the fetal period, underlining the fact that fetal death is a substantial cause of economic loss. However, examination for fetal development or death during pregnancy is not performed routinely in domestic animals, and reference curves for normal fetal growth are, therefore, scarce. In this paper, the numerous possible causes of fetal death are reviewed briefly, with emphasis on the role of placental problems in fetal death and impaired fetal viability. In this respect, the role of placental insufficiency as a cause of pregnancy loss in twin pregnancies in monotocous species is well known, whereas the abnormal placental development leading to retarded fetal growth during pregnancies in recipients of in vitro produced (IVP) or nuclear transfer (NT) embryos has been less extensively documented.Fetal viability or death can be evaluated using hormonal, chemical and ultrasonographic parameters. For example, the viability of the feto-placental unit can be examined by measuring maternal plasma concentrations of oestrone sulphate or the placental proteins, including pregnancy-associated glycoprotein (PAG) and pregnancy-specific protein B-60 (PSPB-60). Low concentrations of any of these three indicate either no pregnancy, or if pregnancy was confirmed earlier, fetal death and abnormally high or low levels can indicate fetal abnormality.Ultrasound can be used to examine the fetal heart rate (FHR), the incidence of fetal movements (FM), the appearance of fetal fluids and the development of the fetus and placenta. However, although abnormal FHRs have been correlated to subsequent fetal death, it is important to remember that there is a large physiological variation in FHR at the end of gestation, due to different behavioural states and differences in FM patterns. Although monitoring fetal viability and death using hormonal and ultrasonographic evaluations is possible during pregnancy in domestic animals, there is considerable physiological variations in the 'normal' values. Therefore,- 82-83 (2004) [415][416][417][418][419][420][421][422][423][424][425][426][427][428][429][430] suitable combinations of tests need to be identified and more accurate reference values generated before such approaches can be considered reliable for monitoring the status of individual fetuses.

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Section: Hormonal/chemical Monitoringmentioning

confidence: 92%

Fetal death: comparative aspects in large domestic animals

Jonker

2004

Animal Reproduction Science

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“…This indicates that pregnancy failures after transfer of IVP embryos are more often the result of a failure of conceptus development. On the contrary, abnormally elevated levels of rely on the measurements of proteins (different PAG's, PSPB's) and hormones (progesterone, conjugated and unconjugated oestrogens, prostaglandin metabolites, cortisol, placental lactogen) in maternal plasma [34], although their value for the prediction of abnormal foetal development or foetal distress needs further exploration.…”

Section: Summarizing Conclusionmentioning

confidence: 99%

The monitoring of bovine pregnancies derived from transfer of in vitro produced embryos

et al. 2002

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-Both an increased rate of embryonic, foetal and perinatal losses, and the occurrence of deviations in foetal and placental development are associated with bovine pregnancies obtained from in vitro produced embryos. This thus requires for a more accurate and frequent monitoring of foetal and maternal functions during pregnancies. Such approaches will enable to establish the period during which these losses and deviations in development occur and to plan possible clinical interventions. This paper reviews some recent data on return rates, late embryonic and foetal losses in recipients after the transfer of either MOET, IVF or nuclear transfer embryos. Special attention is paid to the diagnostic value of measurements of pregnancy specific/associated proteins and progesterone in maternal plasma. Possibilities to measure foetal body sizes, size of placentomes and foetal heart rate by means of transrectal or transabdominal ultrasonography are illustrated with data from the literature and with recent results from our own large field study with MOET, IVP-co-culture and IVP-SOF embryos.cow / pregnancy / pregnancy proteins / ultrasonography / foetus / placenta / foetal heart rate / embryo transfer / in vitro fertilization / nuclear transfer Reprod. Nutr. Dev. 42 (2002) 613-624 613

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“…For both groups, the highest FCCs were observed during pre-partum, reflecting the physiological corticosterone peak triggering the partum (McLean & Smith, 2001;Kindahl et al, 2002). A second peak was also noted during post-weaning, and it was probably related to the stress caused to does by early weaning-a procedure typical of intensive rabbit farming.…”

Section: -----------------------mentioning

confidence: 90%

Effect of Breed, Cage Type, and Reproductive Phase on Fecal Corticosterone Levels in Doe Rabbits

Prola

Cornale

Renna

et al. 2013

Journal of Applied Animal Welfare Science

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Fecal corticosterone concentration (FCC) is increasingly being used as a nonin-vasive indicator of stress in assessment of nonhuman animal welfare. The aim of this study was to evaluate effects of breed, cage type, reproductive phase, and their interactions on FCC levels in doe rabbits. A total of 252 doe rabbits were randomly assigned to 2 groups. Does were individually housed in either standard dimension cages (SC) or in cages with a volume more than double that of the SC. Bigger cages (BC) were equipped with a plastic foot mat. Breed, cage type, and reproductive phase significantly affected FCC. New Zealand hybrids showed higher FCCs (p < .001) when compared witho the autochthonous breed (27.77 ± 0.47 vs.24.61 ± 0.36 pg g -1 , respectively). Increased cage size coupled with a plastic foot mat resulted in a significant decrease in doe FCC. The highest FCCs were detected at partum (BC: 30.40 ± A c c e p t e d M a n u s c r i p t

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Endocrine changes in late bovine pregnancy with special emphasis on fetal well-being

Cited by 63 publications

References 24 publications

Fetal death: comparative aspects in large domestic animals

Fetal death: comparative aspects in large domestic animals

The monitoring of bovine pregnancies derived from transfer of in vitro produced embryos

Effect of Breed, Cage Type, and Reproductive Phase on Fecal Corticosterone Levels in Doe Rabbits

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