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Modeling lactation curves of “Barrosão" beef cattle with Wood’s model

Dynamics of pastures and fodder crops for Mirandesa cattle breed - II Mineral c...

Mirandesa cattle are a local breed from the Northeast region of Portugal, playing an important role on the maintenance of the rural spaces, contributing to the fixation of the populations and to the environmental preservation. The aim of this study is to characterize the feed resources (mineral composition) available along the year in this farming system. The animals graze natural pastures in Spring and beginni...

Characterization of collagen and fatty acid composition of “Carne Mirandesa-PDO...

The objective of this study was to evaluate chemical parameters related to meat quality, contributing to a better characterization of “Carne Mirandesa-PDO” veal. This study was made in three farms, from the Northeast region of Portugal (PG, FA1 and FA2), where calves were raised permanently indoors, nurse from their dams overnight, and fed with hay and concentrate made with local ingredients and soybean meal. T...

Dynamics of pastures and fodder crops for Mirandesa cattle breed

Mirandesa cattle are a local breed from the Northeast region of Portugal, playing na important role on the maintenance of the rural spaces, contributing to the fixation of the populations ant to the environmental preservation. The aim of this study is to characterize the feed resources available along the year in this farming system. The animals graze natural pastures in Spring and beginning of Summer, being af...

Influência da variação de peso vivo e condição corporal na duração do anestro a...

Uma vez que as vacas Barrosãs parem ao longo de todo o ano, a diminuição sazonal das disponibilidades de alimento prejudica a taxa de fecundação. A avaliação do peso corporal (PC) e da condição corporal (CC) ao parto e durante a primeira lactação pode constituir um método prático de avaliação do efeito da dieta sobre a reprodução. Neste estudo, que decorreu nas quintas experimentais da UTAD (Vila Real) e da DRA...

Efeito da dieta no peso e idade à puberdade em novilhas da raça Barrosã

Com o objectivo de avaliar o efeito da dieta no peso vivo (PV) e idade à puberdade de fêmeas bovinas da raça Barrosã, foram utilizadas 32 novilhas com um PV inicial de 165,1±13,8 kg e 224±18 dias de idade. Estes animais foram divididos em 3 grupos: um grupo de 12 animais foi colocado em pastoreio e suplementado com feno de prado natural (P); os restantes 2 grupos, com 10 animais cada, foram alimentados com uma ...

Portuguese beef and sheep production systems

The total area of Portugal is 8.9 m ha of which 3.8 m are arable. Of the latter, 0.81 m ha is permanent grassland and 0.41 m ha is temporary forages and pastures. Total number of farms is 445,000 of which " 77% are less than 5 ha in size. Only 2% offam1s are greater than 50 ha. The total population is 9.4 m of which 49% is employed. Of those employed, 11% work in agriculture. This has fallen from 17% in 1990. T...

Trends in small ruminant production in extensively managed areas of North East ...

The total area of Portugal is 8.9 m ha of which 3.8 m are arable. Of the latter, 0.81 m ha is permanent grassland and 0.41 m ha is temporary forages and pastures. Total number of farms is 445,000 of which 77% are less than 5 ha in size. Only 2% offam1s are greater than 50 ha. The total population is 9.4 m of which 49% is employed. Of those employed, 11% work in agriculture. This has fallen from 17% in 1990. Tot...