关键词
age,crossbreeding,agroforestry,profitability,pruning,race,dry season,management,regulations,apiculture,contention,industrialisation,hedges,soil conservation,evaluation,biotechnology,oestrous cycle,rural areas,endangered species,reproduction,sexual reproduction,animal health,cost benefit analysis,wildlife,organic matter,growth,proteins,genetics,heterosis,hormone,animal nutrition,embryo transfer,animal breeding,tropics,annuals,brewing industry,gene transfer,temperate climate,s,body weight,feed conversion efficiency,land use,wet season,biomass,forage,climate,fertilization,animal husbandry,metabolism,consumption,control,nutrients,hormones,selection,marketing,pest control,chemical composition