Ministry of Agriculture

About: Ministry of Agriculture is a government organization based out in Rio de Janeiro, Brazil. It is known for research contribution in the topics: Biology & Chemistry. The organization has 1153 authors who have published 1189 publications receiving 14442 citations.

Diferentes fontes proteicas em rações de leitões sobre atividade da tripsina e parâmetros sangüíneos

Abstract: Were used 64 piglets submitted eight treatments: ration with skim milk (SM), three rations with crescent levels of swine plasma (SP), three rations with whole egg (WE) and a ration with high inclusion of soybean meal (SB). Were monitored the blood parameters (BP) in pigs at 27 and at 34 days of age. The piglets were slaugther at 28 and at 35 days of age, for collections pancreas and posterior mensurements of absolut (AW) and relative weigth (RW) of pancreas and trypsin activity (TA). Treatments not influencied AW and TA. Significant effect of the crescent levels was verified of SP, with lineal reduction of the leukocytes and increase of the globular volume, to the 27 days; while to the 34 days, lineal increase of the hematias was observed. At 27 days, animals feds rations with crescent levels of SP have inferior percentage of eosinophils than others that consumed crescent levels of WE. The utilization of SP promoted smaller stimulus to the immune reply, while the use of WE promoted larger humoral reply of the piglets.

Preliminary test for nitrogen- and oxygen-containing groups in organic compounds

Abstract: Organic Compounds carrying groups containing both nitrogen and oxygen, such as nitro- and nitroso compounds, oximes, hydroxamic acids, azoxy compounds, and amine oxides yield nitrous acid when they are heated dry (pyrolysis). This product can be readily detected in the gas phase by theGriess nitrite reaction. This behavior provides a rapid preliminary test for members of these classes of compounds. Micro analytical limits of identification are readily obtained within the technique of spot test analysis.

Milk quality in small farms from Southern Region of Brazil

Abstract: EnglishObjetivou-se avaliar alguns padroes fisico-quimicos do leite cru refrigerado em relacao ao atendimento aos padroes de qualidade brasileiros em pequenas propriedades da Regiao Sul do Brasil. O teor de gordura, proteina bruta (PB), solidos totais (ST), contagem de celulas somaticas (CCS) e contagem total em placas (CTP) do leite cru refrigerado de 78 pequenas propriedades foram analisadas mensalmente entre outubro de 2014 e fevereiro de 2017. Verificou-se que 96% das amostras atenderam as regulamentacoes brasileiras para teor de gordura, 87% para PB e 91% para ST. Os valores medios de CTP e CCS foram superiores aos limites maximos estabelecidos pela regulamentacao brasileira. Pequenas propriedades da Regiao Sul do Brasil produzem leite com adequado padrao para os principais indicadores quimicos. No entanto, existe uma lacuna importante no cumprimento das praticas higienico-sanitarias, levando a altos niveis de leite cru refrigerado que nao atendem os limites da regulamentacao brasileira portuguesThis study aimed to evaluates some physical chemical aspects of chilled raw milk that meet Brazilian quality standards in smallholder farms from southern Region of Brazil. The fat content, crude protein (CP), total solids (TS), somatic cell count (SCC), and total plate count (TPC) of the chilled raw milk from 78 smallholder farms was analyzed between Oct 2014 and Feb 2017. It was found that 96% of the samples met the Brazilian regulations for fat content, 87% for CP, and 91% for TS. The mean values of TPC and SCC were higher than the maximum limits established by Brazilian regulations. Smallholder farms from Southern Region of Brazil produce milk with an adequate standard for the main chemical indicators. However, there is an important gap in compliance with hygienic-sanitary practices, leading to high levels of chilled raw milk that does not meet the limits of Brazilian regulations

Development of a method for the direct determination of arsenate in honey by hydride generation atomic absorption spectrometry

Abstract: This paper describes the development of a fast method for determination of arsenate in samples of honey. The variables studied in the optimization of the method were NaBH4 concentration, pre-reducing agent, HCl concentration, the diluent type and contact time with the sample. The optimized conditions were 50 g L−1 of sample prepared in 1.3 mol L−1 HCl and 10 g L−1 SC(NH2)2. The hydride generation solutions were 8.5 g L−1 NaBH4 and 2.5 mol L−1 HCl. The limit of detection (LOD) was 20 ng g−1. The validated method was used to quantify arsenate in 27 samples of honey collected from different cities of Minas Gerais state, Brazil. All samples showed arsenate concentrations below the LOD.