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Selection for morphology, gaits and functional traits in Lusitano horses: I. Ge...

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...

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...

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 ...

Caractérisation démographique du cheval lusitanien

Genetic diversity in the Lusitano horse breed assessed by pedigree analysis

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

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...

Planejamento estratégico participativo: proposta para a transferência de tecnol...

2009

Avaliação da comunicação interna: um diagnóstico dos veículos de comunicação na...

2009

Indicadores demográficos no cavalo lusitano

O cavalo de Puro-Sangue Lusitano representa a principal raça equídea autóctone de Portugal, e tem um efectivo registado de aproximadamente 4 mil fêmeas reprodutoras. A partir da base de dados do Registo Nacional de Equinos da Fundação Alter Real compilou-se um ficheiro de genealogias com 50603 indivíduos, nascidos entre 1824 e 2007. Até 2007, o número de animais inscritos no Livro de Adultos (Reprodutores) da r...

Análise da estrutura genética de populações ovinas churras portuguesas

A diversidade e estrutura genética foram estudadas em seis raças portuguesas do grupo Churro (Badana, Galega Bragançana, Galega Mirandesa, Mondegueira, Churra da Terra Quente e Algarvia), e na raça exótica Assaf, com um conjunto de 20 microssatélites. Os dados foram analisados com a metodologia bayesiana implementada pelo software STRUCTURE. A variabilidade genética observada sugere a existência de quatro popul...