Residual feed intake (RFI) has become in a widely spread index of feed efficiency, however, although most of beef cattle systems in the world are pasture-based, RFI evaluation and research is usually performed in confinement conditions. Currently, selection in favor of feed efficiency has an unclear effect on reproductive performance of grazing beef heifers.
Quillaja brasiliensis (A. St.-Hil. & Tul.) Mart. is currently one of the only two species of the only genus in the Quillajaceae D. Don (Dicotyledoneae) family. Recently, remarkable developments have been achieved regarding its domestication, propagation, and biochemical study. The first results on the structural study of the complex mixture of saponins produced by different organs of the tree have been published. Analogously to the related species Q.
RESUMEN.- La fotosensibilización hepatógena en bovinos puede ser provocada por diversas causas, entre ellas, como consecuencia del daño que provoca Fasciola hepatica a nivel hepatocelular. La fotodermatitis de origen hepatógeno es uno de los signos clínicos que se puede observar en cuadros de fasciolasis crónica, debido en su capacidad de producir fibrosis hepática y colangitis con estasis biliar. El objetivo de este trabajo fue describir dos brotes de fotosensibilización hepatógena en bovinos en los departamentos de Tacuarembó y Soriano (Uruguay).
Mycosphaerella leaf disease (MLD) is one of the most prevalent foliar diseases of E. globulus plantations around the world. Since resistance management strategies have not been effective in commercial plantations, breeding to develop more resistant genotypes is the most promising strategy. Available genomic information can be used to detect genomic regions associated with resistance to MLD, which could significantly speed up the process of genetic improvement. In this study, we investigated the genetic basis of MLD resistance in a breeding population of E.
The sustainable management of forest plantations by keeping the harvest residues on site improves the soil?s chemical, physical and biological properties while constituting an important nutrient reserve.