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Mostrando ítems 671-680 de 1499
Fatores genéticos e de meio no intervalo de partos de caprines leiteiros
(1997-09-01)
The kidding intervals (IDP) of dairy goats raised in Southeastern Brazil were studied to quantify the influence of environmental factors and to estimate genetic parameters by means of least squares (MMQ) and restricted ...
B-mode ultrasound and ecobiometric parameters to assess embryonic and fetal development and estimate gestational age in goats
(2021-11-01)
The aim of this study was to monitor maternal-fetal ecobiometric parameters during physiological pregnancy in goats using ultrasound to predict gestational age by establishing mathematical equations. Twenty-five Saanen ...
Lifetime reproductive efficiency of BALB/c mouse pairs after an environmental modification at 3 mating ages
(2015-01-01)
The aim of this study was to evaluate the effects of an environment change and the age at which mating pairs were formed on the lifetime reproductive performance of BALB/c mice. We assigned 60 monogamous pairs to a randomized ...
Ovine placenta at high altitudes: Comparison of animals with different times of adaptation to hypoxic environment
(ELSEVIER, 2006-09)
Fetal growth and newborn weight from ovine gestations at high altitudes (HA) are greater in ewes that live at HA for several generations than in those native to low altitudes (LA) exposed to HA only during pregnancy. Because ...
Steroidogenesis in sheep pregnancy with intrauterine growth retardation by high-altitude hypoxia: effects of maternal altitudinal status and antioxidant treatment
(CSIRO, 2013)
Sheep pregnancy in high-altitude environments frequently involves hypoxia and oxidative stress and causes
intrauterine growth retardation. The adverse effects of altitude on fetal growth can be prevented by the administration ...
Functional Alterations Induced by Prenatal Malnutrition in Callosal Connections and Interhemispheric Asymmetry as Revealed by Transcallosal and Visual Evoked Responses in the Rat
(1993)
It is known that nutritional restriction during gestation affects the growth of the corpus callosum. The present study was designed to evaluate whether prenatal malnutrition may alter, in the rat, the normal pattern of ...
Percepciones de los profesionales de salud sobre el parto culturalmente adecuado. Facultad de Ciencias Médicas 2017
(2017)
BACKGROUND: Childbirth is an important event for the family and the woman, so it must be participatory, safe and culturally accepted, that is why the state created a Guide to Care for Culturally Adequate Childbirth, in ...
Influence of protein-calorie malnutrition on reproductive performance of young and mature rats
(1989-12-01)
The effect on reproduction and fetal growth of a protein-deficient diet administration during pregnancy was studied in young and adult rats. Young (50-55 days old) and adult (90-100 days old) pregnant or nonpregnant rats ...
Effect of Thyromimetic GC-1 Selective Signaling on Reproductive and Lactational Performance in the Hypothyroid Rat
(2020)
Introduction: The potential of the thyroid hormone receptor β (TRβ1) selective analog GC-1 has been widely proven in animal models and humans. However, its effect on the reproductive stage of the female rat has not been ...
Reproductive biology of the banded guitarfish, Zapteryx exasperata, from the Gulf of California, México
(Journal of the Marine Biological Association of the United Kingdom, 2009)
The banded guitarfish, Zapteryx exasperata, is a common species in the artisanal elasmobranch fisheries in the Gulf of California. Fishery-derived specimens were examined to determine critical aspects of the reproductive ...