A5008571921- Reproductive Physiology in Livestock
- Genetic and phenotypic traits in livestock
- Ruminant Nutrition and Digestive Physiology
- Effects of Environmental Stressors on Livestock
- Reproductive Biology and Fertility
- Sperm and Testicular Function
- Birth, Development, and Health
- Agricultural and Food Production Studies
- Natural Products and Biological Research
- Reproductive System and Pregnancy
- Sunflower and Safflower Cultivation
- Growth Hormone and Insulin-like Growth Factors
- Animal Disease Management and Epidemiology
- Sexual Differentiation and Disorders
- Agriculture and Rural Development Research
- Veterinary Equine Medical Research
- Animal health and immunology
- Animal Behavior and Welfare Studies
- T-cell and Retrovirus Studies
- Vector-Borne Animal Diseases
- Testicular diseases and treatments
- Animal Diversity and Health Studies
- Bee Products Chemical Analysis
- Animal Law and Welfare
- Hyperglycemia and glycemic control in critically ill and hospitalized patients
Fundação de Estudo e Pesquisa em Medicina Veterinária e Zootecnia
2013-2022
Universidad de la República
2011-2022
Universidad de Montevideo
2005-2021
Instituto Nacional de Investigación Agropecuaria
2002-2014
Fundación IRAUy
2010
Magyar Agrár- és Élettudományi Egyetem
2008
University of Veterinary Medicine
2004-2005
Cairo University
1985
The effect of parity (multiparous vs primiparous) and body condition score (BCS; <3.0 or ≥3.0, lean fat) at parturition on metabolic endocrine profiles from 1 month before to 2 months after were studied in 42 Holstein cows grazing improved pastures. BCS milk production determined every weeks. Non-esterified fatty acids (NEFA), β-hydroxy-butyrate (BHB), insulin, IGF-I, leptin, thyroxine (T4) 3,3′,5-tri-iodothyroinine (T3) plasma 10 days. Progesterone was three times per week parturition....
Summary This study describes the effect of parity (multiparous versus primiparous) and body condition score (BCS) at calving (<3 or ≥3; scale 1–5) on variations BCS, weight (BW) metabolic profiles in Holstein cows grazing improved pastures. Forty‐two were studied (21 multiparous 21 from 2 months before to 3 after calving. BW milk production measured every weeks. Blood samples taken weeks determine total protein, albumin, urea, non‐esterified fatty acids (NEFA), β ‐hydroxybutyrate (BHB),...
The effect of cracked corn grain supplementation (3.5 kg/day) during 3 weeks before the expected calving date on milk production and composition, body condition score (BCS), metabolic hormonal profiles length postpartum anoestrus was evaluated in multiparous Holstein dairy cows under grazing conditions (Energy supplemented group, n = 10; Control 10). Body weekly recorded peripartum period, from days -21 to +35 (parturition day 0). Non-esterified fatty acids, beta-hydroxybutyrate,...
Cows housed indoors with cubicles are probably more restricted in their choice of lying posture and orientation compared cows on pasture. We therefore postures pasture Uruguay the Netherlands Netherlands, also recording divider bedding type Dutch cubicles. visited one farm four herds Uruguay, doing live observations, 25 farms, taking pictures cows. Observations 205 showed long postures, belly neck stretched. Two preferred towards north south, while herd west east. Pictures 217 wide (lying...
Inclusion of fish oil (FO) in the diet dairy cows could improve energy status and milk yield reduce interval from calving to first postpartum ovulation, but effects may differ depending on specific period supplementation. To test these hypotheses, 28 pregnant Holstein heifers were randomly assigned four treatments a 2 × factorial design: prepartum oral drench FO (0 or 140 g/cow.day) for 21 days before calving, and/or 190 after calving. Prepartum, grazed native pastures with supplements wheat...
Abstract Maternal undernutrition decreases sperm production in male offspring, possibly through insulin-like growth factor (IGF-I). To test this hypothesis, we fed pregnant Wistar rats ad libitum with a standard diet (CONTROL) or 50% of CONTROL intake, either throughout pregnancy (UNP), lactation (UNL, both (UNPL). After weaning, offspring ( n = 10 per treatment) were until postnatal day 160, when testes process for histological and molecular analyses. IGF-I immunostaining area intensity the...
Objective To evaluate the effectiveness of a reproductive management program consisting combinations Ovsynch/TAI and prostaglandin (PG) F 2α treatments in Holstein dairy cows under pasture‐based dairying system. Design Field trial. Procedure A total 1177 8 commercial farms were randomly allocated to control treatment groups. Treatment group received one two interventions depending upon number days postpartum (DPP) before planned start breeding. Cows more than 50 DPP by breeding treatment,...
During the fourth week postpartum, 443 healthy Holstein cows milked thrice daily were randomly divided among four groups to receive 0, 2, 8 and 32 micrograms of GnRH analog HOE 766. Intervals from calving first estrus breeding, breeding conception rates at calculated measure treatment response, progesterone was measured in fat-free portion milk samples collected twice weekly during 4 wk following treatment. Uterine involution time estimated by palpation per rectum. Twenty percent examined...
The effect of side corpus luteum on uterine gene expression and protein localization estrogen receptor α (ERα) progesterone (PR) in healthy cyclic pregnant mares 13 days after ovulation (day 0) was investigated. Transcervical biopsies were performed to collect endometrium ipsilateral contralateral regarding the day post-ovulation (n = 6) mares. Blood samples collected daily from 0 until biopsy for 17β-estradiol (E2) (P4) determinations. Receptor determined by immunohistochemistry transcript...
In order to evaluate an artificial insemination programme and reproductive efficiency of dairy herds in Uruguay, a survey was conducted with five farms, utilizing total 768 lactating Holstein cows. Precision oestrous detection assessed by one milk progesterone sample taken on day breeding 11.1%. Two additional samples at 10 23 were used confirm ovulation early pregnancy. Accuracy pregnancy estimation 70.4%. Reproductive determined the analysis records. Average intervals from calving first...
Contents Pre‐natal glucocorticoids are used in women at risk of preterm delivery to induce foetal lung maturation. However, can produce negative outcomes for other tissues such as the reproductive system. We therefore tested effects pre‐natal betamethasone on testicular morphology and apoptotic protein immune expression during pre‐ post‐natal development. Pregnant ewes (n = 42) bearing singleton male foetuses were randomly allocated receive intramuscular injections saline or (0. 5 mg/kg)...
La transición del estado preñada no lactante al preñado es un período de cambios drásticos para la vaca, cual debe adaptar su metabolismo a las fuertes exigencias que le demanda producción. Del equilibrio con vaca resuelva este proceso dependerá capacidad maximizar producción y calidad leche, evitar enfermedades metabólicas asegurar siguiente preñez. mejora nutricional, selección genética el manejo animal han aumentado leche en últimas décadas, esto se asocia una disminución desempeño...
To determine the factors affecting reproductive efficiency in a seasonal breeding artificial insemination (AI) programme dairy herds Uruguay, field trial was conducted on three farms. Lactating cows (n=328) intended to be bred at following period were selected. The started 1 week before beginning of and lasted 80 days or until first service. Milk samples obtained biweekly for 12 weeks, starting prior season progesterone concentrations. Data indicated that 12.5% anoestrus remaining this...
We investigated the early effects of equine embryo on maternal serum concentrations insulin-like growth factor 1 (IGF1), leptin and adiponectin, uterine immune cells genes proteins related to development maintenance pregnancy. Ipsilateral endometrial expression was assessed Days 7 13 after ovulation for following transcripts: oestrogen receptor ERα (ESR1), progesterone (PGR), progestin adipoQ family member 5 (PAQR5), oxytocin (OXTR), prostaglandin-endoperoxide synthase 2 (PTGS2), raf-1...