Wilder Hernando Ortiz Vega

ORCID: 0000-0001-9742-4501
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About
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Research Areas
  • Genetic and phenotypic traits in livestock
  • Effects of Environmental Stressors on Livestock
  • Sperm and Testicular Function
  • Meat and Animal Product Quality
  • Reproductive Physiology in Livestock
  • Animal Genetics and Reproduction
  • Ruminant Nutrition and Digestive Physiology
  • Agriculture Sustainability and Environmental Impact
  • Genetic Mapping and Diversity in Plants and Animals
  • Animal Behavior and Welfare Studies
  • Veterinary Equine Medical Research
  • Rural Development and Agriculture
  • Reproductive Biology and Fertility
  • Animal Nutrition and Physiology
  • Adipose Tissue and Metabolism
  • Muscle Physiology and Disorders
  • Thermoregulation and physiological responses
  • Organic Food and Agriculture
  • Entomological Studies and Ecology
  • Sustainable Agricultural Systems Analysis
  • Agricultural Innovations and Practices
  • Veterinary Medicine and Surgery
  • melanin and skin pigmentation
  • Academic Research in Diverse Fields
  • Animal health and immunology

State University of Norte Fluminense
2014-2024

Universidade do Estado do Rio de Janeiro
2016-2024

Centro Universitário Una
2021-2023

State University of Vale do Acaraú
2020-2022

Valeo (France)
2021

Prefeitura Municipal de Campos dos Goytacazes
2015

The complexity of livestock production systems implies the interrelation physical, technical, social, environmental, and animal factors. This study aimed (i) to classify characterize farms in representative typologies (ii) point out main factors responsible for differences between sheep farm Brazilian semiarid region. A structured questionnaire with 29 variables related livestock, technological, herd management, productive indicators was applied 65 farmers. typology classified,...

10.1080/27685241.2021.1956220 article EN cc-by NJAS Impact in Agricultural and Life Sciences 2021-01-01

International projections point to the growth in global production of sheep meat, mainly from developing countries. However, exigencies consumers on characterization systems, nutritional information, and sensorial analysis target preferences must be answered. The aim this study was characterize meat quality acceptance Brazilian native ovine breeds their crosses, discuss these aspects current basis human health wellbeing. Three (Morada Nova, Rabo Largo, Santa Inês) that were managed...

10.4314/sajas.v50i1.16 article EN cc-by South African Journal of Animal Science 2020-04-21

ABSTRACT: Morada Nova breed has a low effective herd, and its white variety is in risk of extinction. The selection individuals based on standard without correlation with productive aptitude predominant today. We believe that the best way to rescue this valuable genetic resource describe potential for commercial use. Thus, study described meat production lambs through morphological zoometric data, performance carcass characteristics. Twenty-four non-castrated male from two groups were used:...

10.1590/0103-8478cr20210716 article EN cc-by Ciência Rural 2023-01-01

In cull ewes, energy supply by time short periods can affect growth, carcass traits, and meat quality. The objective of this study was to evaluate the effect biscuit bran (BB) cashew nut (CNB) in diets with different total digestible nutrient (TDN) content on animal performance traits ewes. Twenty Morada Nova initial BW 30.1 ± 3.56 kg, three years age were distributed a completely randomized design into factorial scheme 2 × 2, two sources (BB CNB) levels TDN. All isoproteic variations TDN...

10.1016/j.animal.2020.100035 article EN cc-by-nc-nd animal 2020-12-10

The aim of this study was to analyze the effects genetic group and sex on residual feed intake, performance, testicular size, carcass morphometric traits in Santa Ines purebred Dorper ´ crossbred lambs. A total 32 lambs, with initial body weight 18±3.7 kg were used. Analysis variance, considering interaction between all performed. Crossbred females (-0.018±0.06) males (-0.018±0.05) more efficient (p<0.001) intake than (0.018±0.04) or (0.018±0.04). most animal consumed 37.9% less (1.179...

10.1590/0001-3765202020190340 article EN cc-by Anais da Academia Brasileira de Ciências 2020-01-01

Background: Assessing breeding soundness is important to predict the potential fertility of stallions. Objective: To investigate association testis traits, total number spermatozoa, and testosterone with Mangalarga Marchador breed Methods: The traits measured were testicular length, width height, right left volume volume. We also evaluated spermatozoa (TNS), serum concentration stallions (by embryo recovery from donor mares) in non-breeding seasons during 1 year. Analysis variance was...

10.17533/udea.rccp.v31n1a05 article EN cc-by-nc-sa Revista Colombiana de Ciencias Pecuarias 2018-01-01

Context The in vivo evaluation of body tissue development on meat production sheep can be used both to identify and select animals with the best characteristics make choices regarding marketing products these animals. Aims objective this work was evaluate, using computed tomography, dynamics composition male female Santa Inês vivo. Methods carcass by tomography 38 (21 17 female) performed after weaning, at ages 90, 120, 180 300 days. Based Cavalieri method, regression equations were...

10.1071/an20084 article EN Animal Production Science 2020-01-01

The growth of the Gyr breed in Brazil terms genetic gain for milk, along with conditions market, has led to use ovum pick-up vitro production (OPU-IVP) as a leader biotechnology multiplication material.The aim this study was investigate phenotypic correlations between OPU-IVP-linked characteristics and pregnancy rates registered an embryo transfer program using cows oocyte donors.Data collected from 211 OPU sessions 298 transfers during years 2012 2013 were analyzed statistical analysis...

10.4238/2015.july.3.9 article EN Genetics and Molecular Research 2015-01-01

The aim of this study was to characterize the hematological profile equine Brazilian Pony breed herds in northern Rio de Janeiro state, Brazil. Blood samples were separated categories: adult stallions, pregnant mares and non-pregnant mares. red blood cells (RBC), packed cell volume (PCV), hemoglobin (Hgb), main corpuscular (MCV), mean (MCH), concentration (MCHC), white (WBC) differential count basophils (Baso), eosinophils (Eos), band (Bands), segmented neutrophils (Neut), lymphocytes (Lym),...

10.53588/alpa.320101 article EN cc-by-nc-sa Archivos Latinoamericanos de Producción Animal 2024-02-22

In vivo, the temperature inside preovulatory follicles of cows is approximately 1ºC lower than rectal temperature. However, standard bovine oocyte in vitro maturation (IVM) protocols use 38.5ºC based on This study evaluated effect reducing IVM to 37.5ºC proteomic profile oocytes compared routine 38.5ºC. Nuclear rate and cumulus cell (CC) expansion (30 COCs per group, 21 replicates) were assessed by observing first polar body using a subjective scoring method (0-4). Total nitrite...

10.2139/ssrn.4850994 preprint EN 2024-01-01
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