A5090617630- Genetic and phenotypic traits in livestock
- Ruminant Nutrition and Digestive Physiology
- Meat and Animal Product Quality
- Reproductive Physiology in Livestock
- Effects of Environmental Stressors on Livestock
- Rural Development and Agriculture
- Animal Behavior and Welfare Studies
- Animal Nutrition and Physiology
- Agricultural and Food Sciences
- Agriculture Sustainability and Environmental Impact
- Soil Management and Crop Yield
- Livestock Management and Performance Improvement
- Agriculture and Farm Safety
- Growth and nutrition in plants
- Aquaculture Nutrition and Growth
- Helminth infection and control
- Food Safety and Hygiene
- Genetic Mapping and Diversity in Plants and Animals
- Agroforestry and silvopastoral systems
- Sustainable Agricultural Systems Analysis
- Peanut Plant Research Studies
- Animal Genetics and Reproduction
- Genetics and Plant Breeding
- Parasitic Infections and Diagnostics
- Agronomic Practices and Intercropping Systems
Universidade Federal de Santa Maria
1999-2025
Universidade Federal de Pelotas
2013-2024
Universidade Federal Rural do Rio de Janeiro
2023
Institute of Animal Science and Pastures
2023
Instituto de Pesquisas Jardim Botânico do Rio de Janeiro
2023
Governo do Estado do Rio Grande do Sul
2021
ORCID
2019
Universidade Regional Integrada do Alto Uruguai e das Missões
2011-2012
Universidade Federal do Rio Grande do Sul
2004-2011
Enpro Consult (Bulgaria)
2002-2005
The objective of the study was to determine factors related beef cattle carcass bruises. Handling, transportation and unloading data from purchased by a slaughterhouse in southern Brazil were obtained assess their associations with bruising (occurrence or not) number bruises per load. In total, 4338 carcasses 142 loads company assessed. females cull cows males steers. Independent variables studied included sex (females males), loading facilities (good, regular poor), handling transport time...
This study aimed to assess preslaughter factors responsible for the occurrence of bruises front, rib, loin, hip, and round sites cattle carcasses. Data from slaughter 148 loads were assessed, totaling 4,611 Evaluated bruising factor variables animal gender, journey distance (km), vehicle type (m²), time (hours), load density (kg/m2 ), handling facilities conditions (optimal, acceptable, unacceptable), unloading waiting (min). Gender had strongest influence on carcass bruising, being first...
Principal component analysis was applied to evaluate the variability and relationships among univariate breeding values predicted for 9 weaning yearling traits, as well suggest functions of traits that would promote a particular objective. Phenotypic pedigree information from 600,132 Nelore animals used. Genetic parameters were obtained analyses birth weight gain; conformation, finishing precocity, muscling scores at yearling; scrotal circumference. The principal mainly associated with...
The objective of this study was to compare growth from birth slaughter different breed groups that were raised in Rio Grande do Sul, Brazil and estimate the consequent additive heterosis effects. Caracu (C), Hereford (H), Nelore (N) sires mated with Angus (A) dams, A H N dams produce a first generation crossbred progeny contemporary purebred A, H, calves. Heifers (G1) Brangus (BN) Braford (BO) second (G2) progeny. Data analyzed group means, individual maternal effects, effects on weight,...
Resumo O objetivo deste trabalho foi realizar a avaliação da viabilidade econômica de um modelo tradicional produção bezerros corte em sistema extensivo, desenvolvido nas condições receitas obtidas e gastos insumos recomendados para as normais no estado do Rio Grande Sul. Foram realizadas duas entrevistas propriedade rurais coleta dados referentes aos recursos, estruturas disponíveis o taxas ocupação das áreas pastejo. Os resultados mostraram que os principais custos operacionais atividade...
This study evaluated body development and reproductive performance of beef cows whose calves were submitted to early weaning (76 days age), or conventional (148 age). It was used 141 Braford that calved in 2004, 2005, 2006 evaluate weight at calving 76 days, 148 the beginning end breeding season, variation average daily weight, condition, pregnancy rate, interval. Dams weaned age showed gain higher better condition age. The weights season during than cows. Pregnancy rate (86.34%) those...
It was aimed in this work to evaluate the productivity and efficiency of beef cows submitted weaning their calves at 76 days (early weaning) or 148 (weaning conventional age) after calving during three consecutive years. evaluated pregnancy rate, birth weaning, gain weight cows, production weaned per cow calf index. Pregnancy rate herd early (86.34%) higher than (55.5%). Early showed rates when compared (83.6 83.6% vs. 47.5 44.5%, respectively) besides a (183 114). produced 60.5% more cows....
Assessment of carcass bruises in steers and cull females, classified during truck unloading at the slaughterhouse according to genetic dominance zebu taurine cattle, presence horns, including polled, horned mixed batches. We considered batches that included more than 20% animals less animals. The data were collected a commercial 93 batches, with total 2,520 animals, from different regions South Brazil. After evisceration, identified recorded regions: hip, round, ribs, forequarter loin area...
The aim of this study was to evaluate the influence two sub-periods calving season and cow maturity stages on efficiency beef cows their calves. A total 159 cow-calf pairs were divided by time (early or late) within stage (young adult). Calves weaned at 42 63 days after birth evaluated until 210 age. Cows calves had development examined based weight body condition score calving, weaning, days. Reproductive performance basis become pregnant again. Milk yield assessed direct method three...
The experiment evaluated total and individual yield of commercial cuts, bones, trimmings carcasses from 38 Braford steers at 22 months age finished in a feedlot. Carcasses were ranked according to three conformation classes (good minus = score 10; good 11; plus 12), weight (heavy 229.4 kg, intermediate 205.0 light 184.0 ranging 222.9 250.4, 201.5 209.0, 170.0 190.3 respectively). Carcass cold shrinkage was not affected by conformation, but it significantly lower heavy (1.83%) than (2.53%)...
Foi avaliado o desempenho de vacas Charolês (C) e Nelore (N), agrupadas em três classes idade, jovens (3 4 anos), adultas (5 a 7 anos) velhas (8 ou mais desmamadas aos (precoce) sete meses no outono (tradicional). O peso das desterneiradas (T3) foi 45 kg superior ao com remoção do bezerro (T7). estado corporal também melhor nas T3 (3,3 contra 2,1 pontos). Vacas apresentaram maior ganho parto final período reprodutivo maiores porcentagem cio (81 51%) prenhez (67,2 37,3%) menor intervalo...
The effects of weaning age (90 days or 156 days) female beef calves were evaluated on their subsequent performance from the beginning first pregnancy and end second breeding season, at 22/24 months age. During pregnancy, heifers managed as a single group Brachiaria brizantha cv. Marandu pasture; after calving, bristle oats (Avena strigosa Schreb) ryegrass (Lolium multiflorum Lam.); humidicula pasture during reproductive period. characteristics studied not influenced by calf Heifers submitted...
Abstract: The objective of this work was to evaluate the influence lairage periods on temperament, physiological indicators stress, and meat quality beef cattle. Thirty-two castrated Aberdeen Angus x Nellore crossbred steers were distributed into four periods: 12, 18, 24, 48 hours. following variables evaluated: serum levels stress glucose cortisol (upon arrival at slaughterhouse, after period, bleeding), animal temperament (movement, resistance approach, aggressiveness), (final pH,...
O objetivo deste experimento foi avaliar o desenvolvimento, até os 24 meses de idade, machos dois sistemas acasalamento, puros (Charolês - C e Nelore N) cruzados ( 1/2 CN, NC), submetidos a duas idades desmame, T3 desmame aos 3 idade T7 7 idade. Os animais foram mantidos do nascimento ao com as vacas em pastagem nativa e, após ambos por um período 30 dias curral alimentados no cocho. T3, 4º 7º mês, milheto (Pennisetum americanum). pesos 3, 7, 12, 18 ganhos peso médios diários (GMD) entre...
The experiment evaluated the meat yield of prepared beef cuts, bone and trimmings steer culled cow carcasses. Culled 72-month-old Braford cows, 496 kg live weight 36-month-old steers, 494 were used, all from same herd finished on ryegrass pasture. A randomized complete design, with two treatments 15 replications, was used. Hot carcass lower for cows (248 kg) than steers (263 kg). Steer carcasses presented better conformation, chilling loss, shorter (128.6 vs. 137.7 cm), longer thicker limbs...
Avaliou-se a influência do desmame precoce, em média aos 77 dias pós-parto, e convencional, 147 no desenvolvimento de novilhas corte. Foram utilizadas 161 bezerras Braford, nascidas nos anos 2004, 2005 2006. Após os desmames as foram mantidas pastagens cultivadas verão (Pennisetum americanum) inverno primavera (Avena strigosa Schreb + Lolium multiflorum Lam). avaliados pesos corporais, ganhos médios diários condição corporal cada 28 dias. Houve interação entre idades ano para peso ganho...
Este trabalho foi realizado com o objetivo de avaliar, por dois anos consecutivos, efeito da idade desmame no desempenho reprodutivo 121 novilhas Braford acasaladas aos 13/15 meses idade. Avaliaram-se duas idades - 77 dias pós-parto (desmame precoce); e 147 convencional), utilizando-se bezerras nascidas nos 2004 (66) 2005 (55). Após desmame, as foram mantidas, inicialmente, em pastagens cultivadas verão (Pennisetum americanum, L.) inverno/primavera (Avena strigosa Schreb + Lolium multiflorum...
Avaliou-se o desempenho de novilhas corte até parto submetidas a diferentes níveis suplementação em pastagem natural durante primeiro período reprodutivo, dos 14 aos 17 meses. Foram utilizadas 98 contemporâneas do mesmo rebanho grupos genéticos Charolês, Nelore e suas cruzas, com peso médio 255 kg. As foram distribuídas três grupos: sem suplementação; 3,5 g/kg corporal; 7,0 corporal. O ao final ganho diário foi maior entre as grupo na proporção (322 0,701 kg) comparação àquelas sob (302...
The objective of this study was to evaluate the risk associated with finishing crossbred Charolais × Nellore steers in feedlot at different slaughter weights (425, 467 or 510 kg), considering disregarding correlation amongst random input variables. Data were collected from 2004 2010 and used simulation financial indicator Net Present Value (NPV). Animals slaughtered 425, kg fed diets containing a roughage:concentrate ratio 60:40 for 30, 65 94 days, respectively. In NPV, Latin Hypercube type...
Abstract The objective of this work was to evaluate, through meta-analysis, the impact subcutaneous fat thickness on beef qualitative traits. Combined data from 13 studies were used, comprising 245 carcasses male bovines slaughtered in Brazil. Effect size for all parameters calculated as mean difference or standardized difference, at 95% probability. meta-analysis random and fixed effects carried out when I2>50% I2<50%, respectively, each indicator separately, with means thickness,...