The foraging strategy of grazing dairy goat (Florida breed), in mediterranean pastures of Sierra Norte of Sevilla (Spain), was studied. Woody species account for 19 p. 100 of goat selection in autumn-winter, 25 p. 100 in ...

An experiment is carried out on the use of Cistus ladaniferus L. extracted with ,ethyl alcohol, in rabbit feed. 16 Californian breed rabbits are used. They are fed ad libitum for 30 days with a commercial feed in wich the ...

The authors have studied the tannin concentration in the fruits of six different varieties of Quercus ilex L. It shows that geographical area have little influence on the concentration, the variety being the main determining ...

The isoflavone content of natural pastures in the county of Cordoba has been studied. Soil factors can induce variations in the phytoestrogen level in the pasture. Soil organic matter, pH and Ca increments are de¬terminants ...

The level of oestrogenic isoflavones (biochanin A, formononetin, genistein and pratensein) are determined on twenty species of the Trifolium genus. These samples have been taken from the natural pasture growing in the ...

The authors study the seasonal evolution of oestrogenic isoflavones in natural pastures in the province of Cordova. The highest proportion of positive samples corresponds to the spring with values approaching 80 p.100 of ...

The evolution of the chemical composition of Erica arhorea L. is studied. The levels of Mg, Fe, Mn, and Cu, are adequate during the whole year and, only seasonally, are sufficient K and Ca concentrations. This species has ...

After meassuring several dimensions of C. ladanifer it is concluded that they are not affected by different soil conditions (altitude,orientation, slope,..depth, texture and color). Perhaps accumulative, anthropic or ...

Considering the importance of silage as alternative for animal feeding systems, this review aims to present recent results available in literature on factors affecting the nutritive value of silage, especially in tropical ...