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Adaptação comportamental ao clima de bovinos em pastoreio: integração da monitorização de precisão e evidência de campo de animais de raça Minhota

Thu, 01 Jan 2026 00:00:00 GMT

Title: Adaptação comportamental ao clima de bovinos em pastoreio: integração da monitorização de precisão e evidência de campo de animais de raça Minhota Authors: Araújo, José Pedro; Paixão, Gustavo; Mata, Fernando; Cerqueira, Joaquim Lima Abstract: A variabilidade climática é um determinante central do comportamento, do bem-estar e da adaptação dos bovinos em sistemas extensivos. Este capítulo integra evidência empírica obtida através de monitorização comportamental de precisão em bovinos de raça Minhota com a literatura científica sobre interações entre clima e comportamento. O estudo envolveu 20 animais equipados com colares GPS, monitorizados continuamente durante 2024, articulando registos comportamentais com parâmetros climáticos como índice temperatura-humidade, radiação solar, vento e precipitação. Verificaram-se diferenças sazonais significativas nas atividades diárias, com maior pastoreio em períodos quentes e aumento da ruminação e do descanso em condições mais frias. O índice temperaturahumidade e a radiação solar influenciaram fortemente a alocação da atividade, enquanto a precipitação reduziu o pastoreio e a ingestão. Os resultados confirmam que o comportamento constitui uma via adaptativa Capítulo 13 Estudos em Ciências Agrárias e Ambientais VI 172essencial para lidar com o stress ambiental, mediando a relação entre clima, bem-estar e desempenho produtivo. A monitorização de precisão revela-se, assim, uma ferramenta estratégica para apoiar a gestão adaptativa e o desenvolvimento de sistemas pecuários resilientes à variabilidade climática.

Industrial use of bioenergy and high-value molecules extracted from winemaking by-products. Ecological aspects

Mon, 01 Jan 2024 00:00:00 GMT

Title: Industrial use of bioenergy and high-value molecules extracted from winemaking by-products. Ecological aspects Authors: Klapa, Ourania; Costa, Paulo; Barros, Mário; Alves, Duarte; Pires, Preciosa Abstract: From the concept of circularity, a new industrial revolution is arising where waste as unwanted or unusable material is virtually unknown. In present times, indicators describe the main constraints posed on our world`s future development: population growth, carbon dioxide in the atmosphere, energy consumption, overuse of minerals and natural resources, and shortage of water, which leads to a future zero-waste society. In this context, a study was developed to explore the potential applications of winemaking sub-products, known as grape pomace (GP), which have incomplete exploitation and part of which is dumped as biowaste. In European countries, the winemaking industry converts 22 million tonnes annually of grapes into wine, giving rise to 5 million tonnes of GP as a product. The goal of this research was to examine the antioxidant capabilities of GP polyphenols in order to identify useful industrial uses. With a total phenolic content (TPC) of 86 mg GAE/g DM in Loureiro variety seed and only 35.1 mg GAE/g DM in Vinhão variety, with very significant differences (p < 0.01), GP can offer a wide range of products with high-value bioactive molecules. In the skin fraction, the TPC value was higher in Vinhão variety than Loureiro variety (120 and 24 mg GAE/g DM, respectively). The findings of TPC and the antioxidant activity as determined by DPPH activity are correlated, with r = 0.988 for Vinhão and r = 0.975 for Loureiro. From the seeds of the grape types Loureiro and Vinhão, a high-yield edible oil content of 16.5% and 17.7%, respectively, was found. When compared to other biomass heating values, the heating value results of GP samples after the fat and polyphenol extraction, which are between 16.9 and 17.2 MJ/kg, show that GP extracted residue has the potential for energy recovery. This byproduct offers fresh prospects for alternative industrial uses when taking into account the quantities of GP that are produced each year and its chemical characteristics.

Brain, decision-making, and mental health 2050

Sun, 01 Jan 2023 00:00:00 GMT

Title: Brain, decision-making, and mental health 2050 Authors: Rezaei, Nima; Saghazadeh, Amene; Altinöz, Ali Ercan; Burhan, Amer M.; Ferreira, Ana; Belolutskaya, Anastasia K.; Lavazza, Andrea; Cadet, Bernard; Danday, Billy A.; Puig, Blanca; Meinel, Christoph; Dumitru, Daniela; Caculidis-Tudor, Denisa; Urcola-Pardo, Fernando; Florea, Gabriela-Paula; Reda, Ghsoon; Tsumura, Hideki; Podina, Ioana R.; Patience, James; Rošker, Jana S.; Scheuer, Jeffrey; Reis, Joana; Salapska-Gelleri, Joanna; Bavolar, Jozef; Olabe, Juan Carlos; Thienen, Julia von; Lai, Ka Sing Paris; Schuller, Kelly; Benzi, Margherita; Evagorou, Maria; Ambrozy, Marián; Bourgeois, Martin; Olabe, Miguel Ángel; Kang, Minsoo; Farina, Mirko; Jung, Myungjin; Kolodny, Oren; Musso, Paolo; Loprinzi, Paul D.; Payan-Carreira, Rita; Silva, Rui Sampaio da; Batmaz, Sedat; Güven, Şefika Dilek; Basbaum, Sérgio Roclaw; McElroy, Todd; Crisanti, Umberto; Slater, Wayne H.; Basogain, Xabier; Paić, Žarko Editors: Nima Rezaei Abstract: The authors of Barin, Decision-Making, and Mental Health were asked how they would see the future of their field 30 years later. This chapter presents the authors’ views on this subject in 2050.

Proximate composition of four seaweeds commonly found on the portuguese shore

Sat, 01 Jan 2022 00:00:00 GMT

Title: Proximate composition of four seaweeds commonly found on the portuguese shore Authors: Jesus, Meirielly; Mata, Fernando; Pereira-Pinto, Ricardo; Rocha, Susana; Vaz-Velho, Manuela Abstract: Four macroalgae species, three red algae (Palmaria palmata, Gracilaria gracilis and Porphyra umbilicalis) and one green algae (Ulva rigida) were analysed to calculate and compare their proximate composition. These algae were grown in aquaculture in the same geography, and were also harvested in the same season. Ulva rigida differentiates the most from the other with higher contents of carotenoids and lower content in ashes. Palmaria palmata shows the lower contents in total sugars, lipids, and protein, but higher in ashes. Porphyra umbilicalis and Gracilaria gracilis have similar contents showing high contents of both lipids and protein.