A5072387072- Reproductive Physiology in Livestock
- Reproductive Biology and Fertility
- Birth, Development, and Health
- Genetic and phenotypic traits in livestock
- Ovarian function and disorders
- Growth Hormone and Insulin-like Growth Factors
- Reproductive System and Pregnancy
- Effects of Environmental Stressors on Livestock
- Cancer-related molecular mechanisms research
- Sperm and Testicular Function
- Endometriosis Research and Treatment
- Renal and related cancers
- Diet, Metabolism, and Disease
- Evolutionary Psychology and Human Behavior
- IL-33, ST2, and ILC Pathways
- Behavioral Health and Interventions
- Circadian rhythm and melatonin
- Livestock Management and Performance Improvement
- Neonatal Respiratory Health Research
- interferon and immune responses
- Fatty Acid Research and Health
- Animal Virus Infections Studies
- Adipose Tissue and Metabolism
- Cytokine Signaling Pathways and Interactions
- Pregnancy and preeclampsia studies
Universidad de la República
2015-2024
Universidad de Montevideo
2016-2023
Observatorio Astronómico Los Molinos
2013-2018
ABSTRACT Naïve female mice are usually described as spontaneously maternal. We investigated how many exposures to pups (15 min vs. 1 hr) were needed induce full maternal behavior (FMB) in 20–22, 30–35, 60–65‐days‐old naïve (C57BL/6), and cohabitation with the parturient mother newborn siblings facilitated juvenile (MB). Only 20% of adults displayed FMB immediately after first exposure pups. Incomplete MB was present 11%, 20%, 30% juveniles, adolescents adults, respectively. Three‐sixty...
Beef cows and ewes grazing native pastures are exposed to cycles of undernutrition that reflect the seasonal variations biomass production. In dairy cows, physiological during early lactation due increased demands for low dry matter intake is exacerbated by need get sufficient from pasture extra energy costs. Undernutrition has profound impacts on reproduction affecting multiple reproductive processes at different levels axis. The objective this paper review influence events adult female...
The aim of the present study was to investigate effects a strategy for extending pro-oestrus (the interval between luteolysis and ovulation) in an oestrus synchronisation protocol (named J-Synch) beef heifers on follicular growth, sexual steroid concentrations, oestrogen receptor ERα progesterone receptors (PR) uterus, insulin-like growth factor (IGF) 1 pregnancy rates. In Experiment 1, treated with new J-Synch had longer period than those conventional (mean (±s.e.m.) 93.7±12.9 vs 65.0±13.7h...
Summary This study investigated whether a 22‐day period of undernutrition (half maintenance) could affect maternal endocrine responses and liver gene expression during early pregnancy (day 7). Thirty‐five ewes were fed 1.5 ( n = 15) or 0.5 20) their maintenance requirements slaughtered on day 7 the oestrus cycle (oestrus 0). Insulin, IGF, leptin non‐esterified fatty acids (NEFA) determined days −14, 0 7. Transcripts IGF family adipokines receptors in by real‐time RT‐PCR. Underfed animals...
Melatonin influences female reproduction, but expression of the melatonin system has not been characterised in ovine uterus.We aimed to determine whether synthesising enzymes (arylalkylamine N-acetyltransferase (AANAT) and N-acetylserotonin-O-methyltransferase (ASMT)), receptors 1 2 (MT1 MT2), catabolising (myeloperoxidase (MPO) indoleamine 2,3-dioxygenase (IDO1 2)), are expressed uterus, if they influenced by oestrous cycle (Experiment 1) or undernutrition 2).In Experiment 1, gene protein...
Abstract Mammalian oocytes undergo maturation and fertilization in the low‐oxygen (O 2 ) environment of oviduct. To evaluate effect O tension during vitro on embryo yield, quality, cryotolerance, gene expression, we matured fertilized bovine cumulus‐oocyte complexes under low (5%) or high (20%) tension. Presumptive zygotes from both groups were cultured at 5% for 8 days. Blastocysts vitrified, then warmed, further 24 h to assess their cryotolerance. Our findings indicate that enhances...
The effect of undernutrition on gene expression progesterone and oestrogen receptors (PGR ESR1), insulin-like growth factors 1 2 (IGF1 IGF2) in the uterus oviducts ewes day 5 after oestrus was investigated. side uterus/oviduct regarding ovary bearing a corpus luteum (CL) (ipsi vs. contralateral) also analyzed. Fourteen oestrous synchronized were fed either 1.5 (C, n=7) or 0.5 (L, times their maintenance requirements from onset hormonal treatment (day -14), till slaughter post-oestrus....
In cattle, expression of IFN-stimulated genes in the female reproductive tract has been reported as an early pregnancy diagnostic tool, d 17 pregnancy. The hypothesis this study was that ISG15 cervix pregnant heifers is increased on 14 objective to compare cervical cells between and cyclic (control, sham-inseminated) 14, 16, 18 after insemination (d 0). Holstein were submitted estrus synchronization protocol inseminated with extender only ("control," n = 6), or regular semen (n 15). Heifers...
This study investigated the effects of undernutrition and presence conceptus at time maternal recognition pregnancy on expression uterine indicators metabolism in ewes. Adult Rasa Aragonesa ewes were allocated to one two planes nutrition for 28 days: maintenance energy intake (control; 5 cyclic 6 pregnant ewes) providing 7.8 MJ metabolisable energy, 0.5 (undernourished; 7 3.9 per ewe. RNA from intercaruncular tissue was harvested slaughter Day 14 estrous cycle or pregnancy, hybridized...
The liver is one of the most important visceral organs, which represents a large contribution to whole animal energy expenditure and major synthetic site insulin-like growth factor-1 (IGF-1) peptide.Decreased plane nutrition acts by reducing metabolic rate mass tissues, such as liver.Also, undernutrition results in reduced circulating IGF-1 concentrations, due uncoupled hormone-IGF (GH-IGF) axis.This study investigated whether 22-day period (half maintenance) could affect protein gene...
Reproduction, Fertility and Development is an international journal publishing original research , review comment in the fields of reproduction developmental biology humans, domestic animals wildlife
The gastrointestinal tract is known to adapt itself changes in feed conditions and the source of various signals that regulate intake energy homeostasis. Therefore, objective this study was assess effect a restriction period mRNA expression target genes related intake. conducted randomized block design with 5 temporal replications (n = 4 or 3 per treatment replication) which thirty-five Rasa Aragonesa ewes (BW 67.1 ± 8.6 kg BCS 3.0 0.5) were assigned two nutritional treatments (3.15 vs 1.05...