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Selection for morphology, gaits and functional traits in Lusitano horses: I. Ge...
Vicente, António; Carolino, N.; Ralão-Duarte, J.; Gama, L. T.Genetic parameters were estimated for morphology, gaits and functional traits in Lusitano horses by uni- and multivariate animal models. Morphological traits considered in the analyses were partial scores attributed to up to 18,076 horses at the time of registration in the studbook and included head and neck, shoulder and withers, chest and thorax, back and loin, croup, legs and overall impression, plus a final...
Selection for morphology, gaits and functional traits in Lusitano horses: II. F...
Vicente, António; Carolino, N.; Ralão-Duarte, J.; Gama, L. T.Mixed model procedures were used to analyze morphology and gaits records collected in about 18,000 Lusitano horses from 900 studs, over a period of 43 years, and functional records collected since 1998, to carry-out a critical assessment of the fixed effects and selection practices followed in this breed. Fixed effects considered in the analysis of morphology (head/neck, shoulder/withers, chest/thorax, back/loi...
Crop beta-glucanase activity limits the effectiveness of a recombinant cellulas...
Ponte, Patricia; Lordelo, M.M.S; Chaveiro-Soares, Manuel M; Mourão, José Luís; Crespo, J.P; Crespo, D.G.; Gama, L.T.,; Ferreira, Luís; Prates, J.A.M.,1. The supplementation of diets rich in soluble polysaccharides with microbial cellulases and hemicellulases decreases digesta viscosity and promotes broiler performance. 2. In contrast, recent experiments suggest that polysaccharidases are ineffective for improving the nutritive value of pasture biomass used by free-range broilers. However, the feasibility of using cellulases and hemicellulases to improve the ...
Genetic diversity in the Lusitano horse breed assessed by pedigree analysis
Vicente, António; Carolino, N.; Gama, L. T.Genetic diversity and population structure were analyzed in the Lusitano horse breed based on pedigree information of animals registered in the Studbook, to identify factors which may have affected the genetic variability of the breed, and provide the bases for the establishment of sustainable utilization programs. Pedigree records collected from 1824 to 2009, including information on 53,411 animals, were used ...
A PRND polymorphism in Churra do Campo portuguese sheep breed
Mesquita, P.; Silva, M.F.S.; Carolino, M.C.; Sousa, M.C.O.; Pimenta, J.; Marques, M.R.; Santos, I.C.; Gama, L.T.; Andrade, C.S.C.R.; Fontes, C.M.Prion-like Doppel gene (PRND) is located downstream from priori protein gene (PRNP). Doppel protein is not related to prion disease but to male fertility. Our previous analysis of PRND coding region in 460 animals from 8 Portuguese sheep breeds, by multiple restriction fragment-single strand conformation polymorphism (MRFSSCP), revealed a synonymous substitution (78G>A). An association was found between identif...
Pasture intake improves the performance and meat sensory attributes of free-ran...
Ponte, P.I.P; Rosado, C.M.C; Crespo, J.P.; Crespo, D.G; Mourão, José Luís; Chaveiro-Soares, M.A.; Mendes, I.L.T.; Gama, L.T.; Prates, J.A.M.Free-range chickens are assumed to consume low to moderate levels of pasture, although the effects of forage intake in broiler performance and poultry meat quality remain to be established. In addition, despite cellulases and hemicellulases being widely used as feed supplements to improve the nutritive value of cereal-based diets for fast-growing broilers, the potential interest of these biocatalysts in the pro...
Produção de frangos de carne em pastagens à base de Leguminosas
Ponte, P.I.P; Rosado, C.M.C; Crespo, J.P; Crespo, D.G; Chaveiro-Soares, M.A; Mourão, J.L; Mendes, I; Gama, L.T; Prates, J.A.M; Ferreira, L.M.APortugal apresenta reconhecidas potencialidades edafoclimáticas para a produção de pastagens à base de leguminosas, tanto em condições de regadio como de sequeiro. Este trabalho pretendeu avaliar a possibilidade de desenvolver formas alternativas para a produção de frangos de carne em pastagens. Avaliou-se o desempenho produtivo de frangos RedBro Cou Nu x RedBro M mantidos dos 28 aos 56 dias em pastagens de se...
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