A5002006595- Effects of Environmental Stressors on Livestock
- Sperm and Testicular Function
- Meat and Animal Product Quality
- Reproductive Physiology in Livestock
- Animal Behavior and Welfare Studies
- Agricultural and Food Sciences
- Genetic and phenotypic traits in livestock
- Agriculture Sustainability and Environmental Impact
- Agriculture and Rural Development Research
- Animal Nutrition and Physiology
- Agroforestry and silvopastoral systems
- Reproductive Biology and Fertility
- Animal Genetics and Reproduction
- Ruminant Nutrition and Digestive Physiology
- Aquaculture Nutrition and Growth
- Rural Development and Agriculture
- Reproductive biology and impacts on aquatic species
- Coconut Research and Applications
- Bee Products Chemical Analysis
- Rabbits: Nutrition, Reproduction, Health
- Milk Quality and Mastitis in Dairy Cows
- Heat Transfer Mechanisms
- Thermoregulation and physiological responses
- Growth and nutrition in plants
- Comparative Animal Anatomy Studies
Brazilian Agricultural Research Corporation
2016-2025
Universidade Federal do Pará
2024
Universidade de São Paulo
2001-2024
Government of Extremadura
2018
Universidad de Zaragoza
2011-2014
Instituto Federal de Educação, Ciência e Tecnologia do Pará
2013
Universidad de Salamanca
2013
Centro de Investigación del Cáncer
2013
Agricultural Research Corporation
2012
Amazon (Germany)
2012
Climate change is a reality and global surface temperature projected to rise substantially in the next 80 years. Agriculture practices will have adapt climate change, also help mitigate this effect using, among other strategies, forest conservation management. Silvopastoral systems been adopted tropical livestock areas but their benefits on thermal comfort reproductive performance of beef cows are not completely known. Therefore, our aims were compare microclimate silvopastoral intensive...
Bovine subclinical mastitis (SCM) is the costliest disease for dairy industry. Technologies aimed at early diagnosis of this condition, such as infrared thermography (IRT), can be used to generate large amounts data that provide valuable information when analyzed using learning techniques. The objective study was evaluate and optimize use machine by applying Extreme Gradient Boosting (XGBoost) algorithm in bovine SCM, based on udder thermogram analysis. Over 14 months, a total 1035 milk...
This paper aimed to evaluate the surface temperatures of buffalo bulls using infrared thermography, considering four distinct anatomical parts over time, and correlate thermal comfort indexes. The humid tropical climate (Köppen's Afi) was predominant in research station where experiment performed trial lasted from April August. Ten (n=10) were evaluated every 25 days (morning: 6:00-9:00; afternoon: 12:00-15:00) parameters assessed respiratory rate (RR), rectal temperature (RT), thermograms...
Brazil has presented tremendous progress in non-surgical embryo transfer (NSET) sheep and goats. New instruments techniques for recovery (NSER) NSET small ruminants were implemented. Recent improvements include refinement of the protocols cervical relaxation combining oestradiol-oxytocin-cloprostenol treatment at specific times before NSER sheep; recipient goats do not require any hormonal drugs to induce dilation direct by route yields excellent results. Transrectal ovarian ultrasonography...
Os sistemas agroflorestais são arranjos de técnicas alternativas uso solo, combinando espécies florestais, culturas agrícolas e atividades pecuárias. silvipastoris menos impactantes, auxiliam na reversão áreas alteradas contribuem para elevar a biodiversidade. Eles exploram eficientemente os recursos naturais, controlam o processo erosivo, melhoram estrutura do solo equilibram atividade dos microorganismos, promovem formação pastagens melhor qualidade, além que proporcionam ambiência animal...
O objetivo deste trabalho foi avaliar o uso de sistemas silvipastoris como ferramenta manejo para manter as características fisiológicas búfalas leiteiras e promover mais altos níveis conforto térmico. Foram avaliadas 56 fêmeas adultas (79±44,12 meses; 575±92,90 kg): 30 em sistema silvipastoril sem sombra útil 26 com 19,9% útil. mensuradas semanalmente: frequência cardíaca respiratória, temperatura retal índice animal. As médias foram comparadas por análise variância variáveis meteorológicas...
O objetivo deste trabalho foi avaliar o efeito de um sistema silvipastoril no conforto térmico 20 búfalas Murrah, das quais 10 criadas em piquetes sem sombra (SS) e com sombreamento (CS) Racosperma mangium, Belém, PA. Os animais foram alimentados pasto, Urochloa humidicola, acesso livre à água para beber sal mineral. A cada três dias, mensuradas: temperatura do ar (TA), umidade relativa (UR), globo negro (TGN), retal (TR), frequências respiratória (FR) cardíaca (FC), a da superfície corporal...
This study evaluated the capacity of thermoregulation and its consequences on scrotal surface temperature patterns semen quality buffalo bulls raised in a wet tropical climate. Eleven water buffaloes were rainiest, transitional less rainy season. Air humidity consistently high, but animals did not show thermal stress any The gradient using infrared thermography was described, three parallel decreasing bands characterised. Sperm (n = 176 ejaculates) maintained normal parameters over periods....
The behavior of ruminants can influence their productive efficiency. aim this study was to evaluate the young zebu and composite bulls kept in pasture production systems, either a crop-livestock-forest integration or without afforestation. work carried out São Carlos, Brazil (21°57′42″ S, 47°50′28″ W), high-altitude tropical climate, from March July, 2022. Forty were evaluated, being 20 Nelore (Bos indicus) (342.5 ± 36.6 kg BW; 16.9 1.8 months) Canchim (5/8 Bos taurus × 3/8 (338.4 39.8 19.1...
To improve the boar sperm cryopreservation process, influence of sugar (lactose, trehalose) source and cryoprotectant [glycerol, dimethylformamide (DMF)] on success freezing was investigated. Sperm samples were frozen in one six extenders: lactose plus 3% glycerol (LG); 1.5% DMF (LGD); (LD); trehalose (TG); (TGD); (TD). Effects motility, viability, acrosome integrity hypoosmotic test (HOST) measured. The results showed that extender containing retained highest motility percentages. In regard...
The hormonal responses of 20 female buffaloes raised under the sun (SS group) or in shade (CS Belém, Pará, Brazil, were assessed. CS group (n = 10) was kept a silvopasture system featuring Racosperma mangium, whereas SS paddocks without Brachiaria humidicola, drinking water, and mineral salt. following parameters measured for each treatment: dry-bulb temperature (AT), relative humidity (RH), black-globe order to calculate globe index (GTHI). Blood sample collections quantitatively determine...
Abstract This study compared the effects of intravaginal and intravenous routes oxytocin (OT) administration in 46 oestrous‐induced Santa Inês ewes (6‐day treatment with progestin‐releasing sponges a single injection 200 IU eCG at time sponge removal) that underwent transcervical embryo recovery 6–7 days after oestrous onset mating. All received 37.5 μg d‐cloprostenol via latero‐vulvar route, 1 mg oestradiol benzoate i.m. 16 hr before 50 OT 20 min non‐surgical (NSER), being administered...
Foi analisado o efeito de dois sistemas silvipastoris nos índices conforto ambiental e alterações parâmetros fisiológicos bezerros bubalinos criados na Embrapa Amazônia Oriental, Belém-PA (clima Afi), no Período 1 (abril a setembro/2007) 2 (outubro/2007 março/2008). Foram inseridos onze Sistema Silvipastoril (SSP1), que apresentava sombreamento útil nas pastagens 18 21%, oito (SSP2), sem sombreamento, com lago para banho. mensuradas as variáveis fisiológicas: temperatura retal (TR),...