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The objective of the work was to know the reference values of thyroxin (T4) hormone under grazing condition of beef cattle in the northwest area of La Pampa. Hundred eighteen blood samples from bovine allocated in six beef farms at the Department of Realico, Chapaleufú, Maracó and Quemú-Quemú were evaluated as consequence of different feeding type. The values founded in blood T4 concentration varied in relation to the amount of iodine concentration in the feedstuff, being the lowest values at the Rancul department. [ABSTRACT FROM AUTHOR]

The honey is defined as the natural sweet substance produced by Apis mellifera bees from the nectar or secretions of plants; or excretions of sucking insects that lives on them. The bees collect, transform and combine with specific substances of their own in the honey comb. The objective of this work was to characterize the honey of the province of La Pampa, based on physico-chemical and microbiological features to search for indicators to ensure better quality for internal and external trade of this product. Thirty-eight samples of different honey-farm, dividing the province of La Pampa in 4 different zones (North, South, East and West) were analyzed. The physico-chemical determinations were pH; total acidity, free acidity and lactone; diastase and ashes. The microbiological analysis made was: determination of total aerobic bacteria count, determination of total coliforms, determination of Salmonella sp and Shigella and the determination of fungi and yeasts. According to the regulations of the CAA results were observed in all cases and regulation MERCOSUR thus also to international standards, concluding honeys in the province of La Pampa can be considered as a good Argentine quality product. [ABSTRACT FROM AUTHOR]