A5052118361- Reproductive Biology and Fertility
- Reproductive Physiology in Livestock
- Sperm and Testicular Function
- Genetic and phenotypic traits in livestock
- Veterinary Equine Medical Research
- Reproductive Health and Technologies
- Animal Genetics and Reproduction
- Seed Germination and Physiology
- Ruminant Nutrition and Digestive Physiology
- Ovarian function and disorders
- Toxoplasma gondii Research Studies
- Effects of Environmental Stressors on Livestock
- Periodontal Regeneration and Treatments
- Animal Disease Management and Epidemiology
- Freezing and Crystallization Processes
- Animal Behavior and Welfare Studies
- Growth and nutrition in plants
- Microencapsulation and Drying Processes
- Meat and Animal Product Quality
- Milk Quality and Mastitis in Dairy Cows
- Science and Education Research
- Genital Health and Disease
- Plant Disease Resistance and Genetics
- Reproductive biology and impacts on aquatic species
- Plant Toxicity and Pharmacological Properties
Universidade Federal do Rio Grande do Sul
2012-2024
Universidade Federal de Santa Maria
2012-2022
Universidade Federal do Rio Grande
2004
California Native Plant Society
1996
Brazilian Agricultural Research Corporation
1996
The number of oocytes recovered from Bos taurus indicus females subjected to ovum pick-up averaged two four times greater compared females. objective the present study was test hypothesis that this difference in oocyte yield due more preantral follicles ovaries Ovaries (n = 64) Nelore (Bos indicus) fetuses 10), heifers 12), and cows Aberdeen Angus taurus) 10) were cut longitudinally into halves, fixed, processed for histological evaluation. estimated by counting them each section, using...
The objective was to determine the effects of exogenous prostaglandin F(2α) (PGF), with or without progesterone treatment, on first ovulation in prepubertal heifers. We tested hypothesis that PGF has a luteolysis-independent ovulatory effect cattle. Crossbred Angus heifers (12 14 mo old, 250 kg body weight, and an average condition score 3 out 5) were examined by transrectal ultrasonography two occasions, 11 days apart. Heifers which CL not detected at either examination considered...
Amostras de leite foram coletadas tanques expansão (n = 69) e das vacas individualmente 3517), em propriedades com sistema produção especializado (ES, n 3), semiespecializado (SE, 5) não (NE, 7). A composição, contagem células somáticas (CCS) teor nitrogênio ureico (NU) avaliados nos diferentes sistemas estações do ano. Os dados comparados aos parâmetros da Instrução Normativa 51/2002 (IN51) para a região Sul Brasil, maio/2009 junho/2010. Analisando os três produção, 42% 29/69) amostras dos...
The objective of this study was to determine the effect fetal calf serum (FCS) on quality in vitro produced bovine embryos. Cumulus oocyte-complexes (COCs, n = 2 449) recovered by ovum pick-up from Bos taurus indicus donors were randomly assigned experimental groups. Sperm selected Percoll gradient used for fertilization (insemination Day 0). In Experiment 1 (n 745 COCs), zygotes cultured Synthetic Oviduct Fluid + 4 mg/mL albumin (BSA), or BSA 2% FCS (BSA+FCS). 704 COCs SOF BSA, FCS, D4 (BSA...
The objective of this study was to evaluate the effect a PGF2α-analogue (PGF) on ovulation and pregnancy rates after timed artificial insemination (TAI) in cattle. In experiment 1, crossbred dual-purpose heifers, crossover design (3 × 3), were given an intravaginal progesterone-releasing insert (controlled internal drug release [CIDR]) plus 1 mg estradiol benzoate (EB) intramuscularly (im) 250 μg PGF-analogue im Day 0. CIDR inserts removed 5 days follicular wave emergence, heifers randomly...
The objective of this study was to evaluate the efficacy cleaning and decontamination procedures in liquid nitrogen tanks. We evaluated 151 canisters 133 bottoms from tanks companies or farms for presence bacteria fungi. Samples were collected bottom containing nitrogen. Tanks divided into Group 1 (G1): decontaminated with 2% glutaraldehyde - Glutaron® II (n = 16 8 tanks); 2 (G2): 70% ethanol 20 10 3 (G3): 115 tanks). Groups belonged companies; farms. culture showed twelve genera five...
Abstract: An outbreak of Brachiaria decumbens poisoning in goats the state Mato Grosso do Sul, Brazil, is described. Out a herd about 1,000 goats, seven died after showing photosensitivity (3 out 7 goats) and icterus (4/7). Other clinical signs included lethargy, dehydration weight loss (7/7). At necropsy there was either hepatomegaly or liver atrophy; orange, yellow gray discoloration - were observed six goats. Two had accentuation lobular pattern punctate, linear stellar fibrous...
Pregnancy rates using stallions’s frozen semen are variable; moreover, some breeds present low freezability. One hundred and four (104) mares were inseminated separeted into two experiments to evaluate fertility of semen’s Criollo stallions (n=5), with 5% dimethylformamide (DMF) or glycerol (GLY) as cryoprotectants. In Experiment I, the inseminations made during pre-ovulation fresh DMF. II, post-ovulation semen, DMF GL. The performed deep in uterine horn ipsilateralis dominant follicle....
em estufa a 39°C com 5,00% de CO 2
The aim of this study was to compare the sperm separation technique using filtration through glass wool compared with just diluted cooled semen. Eighteen ejaculates were collected from 6 pony stallions Brazilian breed. Evaluations done on pH, osmolarity, total motility, membrane functionality (HOST), integrity (CFDA/PI), morphology and mitochondrial viability (MTT) in fresh, 24 48 h semen at 5°C. After dilution, half extended (control group). other after trough (filtered Retained considered...
Background: Passive immunity acquired by colostrum ingestion is essential to prevent neonatal infections. Failure of passive transfer (FPT) maternal occurs in foals that fail absorb enough immunoglobulins within 24 h after birth. Foals with FPT are at increased risk infections and death. Serum samples from might be examined for using the zinc sulphate turbidity (ZST) test. The aim this study was investigate accuracy ZST test, performed two different times first suckling (12 18 h), detect...
In vitro produced bovine embryos were individually cultured from D7 to D9 observe their development. Forty-nine blastocysts (early blastocyst, blastocyst and expanded blastocyst) cultured, (D0= fertilization), in 50ml SOF medium plus 5% OCS. Between D8, straws (SC) or plates (PC) D8 up D9, they on plates. The ratio of early advancing at least one stage development were, respectively, 71%, 37%, 44% PC 100%, 66%, 36% SC (P>;0.05). Overall rates not significantly different (P>;0.05) for (50%)...
Oócitos (n=1177) bovinos obtidos da aspiração de folículos com diâmetro entre 2 e 8mm, ovários matadouro foram divididos aleatoriamente em quatro tratamentos 11 repetições. Os oócitos maturados por 24h TCM-199 Sais Earle, acrescido 25mM bicarbonato sódio, HEPES, rFHS-h, Soro Vaca Estro (SVE) piruvato, estufa a 39ºC, 5% CO2 ar umidade saturada (Grupo Controle, n=296) ou, submetidos ao transporte simulado 6 (T6, n=286), 12 (T12, n=294) ou 18h (T18, n=301) meio maturação TCM+HEPES, banho-maria...