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Environmental and endocrine assessment of sheep welfare in a climate-controlled...
Baptista, F.J.; Marques, R.; Castro, J.A.; Shahidian, S.; Fitas da Cruz, V.; Sales-Baptista, E.The nutritional status of sheep grazing in the Montado ecosystem varies considerably throughout the year, due to variations in the availability and quality of pastures, strongly influenced by the typical climatic conditions of the Mediterranean region: dry summer and autumn with very little rain. These variations lead to severely restricted feeding for approximately half the year, causing under-nutrition, limit...
Assessing foraging strategies of herbivores in Mediterranean oak woodlands: a r...
Ferraz de Oliveira, M.I.; Lamy, E.; Bugalho, M.N.; Vaz, M; Pinheiro, C; Abreu, M.C.; Capela e Silva, F.; Sales-Baptista, E.Montados are agro-silvo-pastoral ecosystems, typical of the Southwest Iberian Peninsula, of high socio-economic and conservation importance,where grazing is a dominant activity. Montados are characterized by na open tree canopy of Quercus sp. and a diverse undercover of shrubs and grasslands that constitute the plant food resources for grazing animals. Plant food resources of Montados are highly variable, both ...
Effect of condensed tannin ingestion in sheep and goat parotid saliva proteome
Lamy, E; da Costa, G; Santos, R; Capela e Silva, F; Potes, J; Pereira, A; Coelho, AV; Sales Baptista, ESaliva appears as a defence mechanism, against potential negative effects of tannins, in some species of animals which have to deal with these plant secondary metabolites in their regular diets. This study was carried out to investigate changes in parotid saliva protein profiles of sheep Ovis aries)and goats (Capra hircus), induced by condensed tannin ingestion. Five Merino sheep and five Serpentina goats were ...
Utilização da proteómica para compreender o comportamento de ingestão
Lamy, E.; Capela e Silva, Fernando; Sales Baptista, E.; Graça, G.; da Costa, G.; Coelho, A.V.O comportamento ingestivo é regulado, entre outros, por factores afectivos, os quais determinam diferentes preferências. A escolha da dieta depende de experiências anteriores, bem como do nível de percepção gustativa, estando a saliva envolvida neste último. As proteínas salivares desempenham papéis muito diversos que incluem a lubrificação, digestão, protecção contra microorganismos e factores antinutritivos, ...
Comparison of Electrophoretic Protein Profiles from Sheep and Goat Parotid Saliva
Lamy, E.; da Costa, G.; Capela e Silva, Fernando; Potes, J.C.; Coelho, A.V.; Sales Baptista, E.Saliva provides a medium for short-term adaptation to changes in diet composition, namely, the presence of plant secondary metabolites. Salivary proteins have biological functions that have particular influence on oral homeostasis, taste, and digestive function. Some salivary proteins, such as proline-rich proteins, are present in browsers but absent in grazers. Despite the significance of salivary proteins, th...
Salivary Amylase Induction by Tannin-Enriched Diets as a Possible Countermeasur...
da Costa, G.; Lamy, E.; Capela e Silva, Fernando; Andersen, J.; Sales Baptista, E.; Coelho, A.V.Tannins are characterized by protein-binding affinity. They have astringent/bitter properties that act as deterrents, affecting diet selection. Two groups of salivary proteins, proline-rich proteins and histatins, are effective precipitators of tannin, decreasing levels of available tannins. The possibility of other salivary proteins having a co-adjuvant role on host defense mechanisms against tannins is unknow...
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