Identification of glycoproteins in mucous cells of the gill epithelium of Colossoma macropomum after exposure to organophosphate / Identificação das glicoproteínas nas células mucosas do epitélio branquial de Colossoma macropomum após exposição ao organofosforado

The use of organophosphates has been recommended for fish, especially the trichlorfon to control parasites. Colossoma macropomum were exposed to trichlorfon during 96 hours and of total number of mucous cells decreased in the number of cells when compared to the control group. Glycoproteins acid, acid sulphated and neutral was identified in the gill epithelium. Neutra glycoprotein had a significant decrease between control and the sublethal concentration. Acid glycoprotein didn't have any significant difference between the groups exposed to the trichlorfon, compared to the control group. Sulfated acidic glycoprotein in the group exposed to the trichlorfon was noticed a reduction in number of mucosal cells acidic sulphated. The differences between density cell and production glycoprotein was a response of these cells after exposure to xenobiotic. The reduction of neutral, acid and sulphated acid glycoprotein in the MC of the gill epithelium Colossoma macropomum may affect gills epithelial surface protection by reducing the formation of an unstirred layer and enhance the ion loss.(AU)

A utilização de organofosforados tem sido recomendada em pisciculturas, principalmente o trichlorfon, para o controle de parasitoses. Colossoma macropomum foram expostos ao trichlorfon durante 96 horas, e o número total de células mucosas diminuiu no número de células quando comparado com o grupo controle. Glicoproteínas ácida, ácida sulfatada e neutra foram identificadas no epitélio branquial. Glicoproteína neutra teve uma diminuição significativa entre o controle e a concentração subletal. Glicoproteína ácida não apresentou diferença significativa entre os grupos expostos ao triclorfon, em comparação com o grupo controle. Glicoproteína ácida sulfatada no grupo exposto ao triclorfon teve uma redução no número de células da mucosa ácida sulfatada. As diferenças entre a densidade celular e a produção de glicoproteína foi uma resposta dessas células após exposição aos xenobióticos. A redução das glicoproteínas neutra, ácida e ácida sulfatada no epitélio branquial de Colossoma macropomum pode afetar a proteção da superfície, reduzindo a formação de uma camada de muco, e aumentar a perda de íons.(AU)

Produção e composição do leite de ovelhas Santa Inês e mestiças Lacaune e Santa Inês e desenvolvimento de seus cordeiros / Milk production and composition of Santa Inês and Lacaune x Santa Inês crossbred ewes and performance of their lambs

The effects of three maternal genotypes were evaluated on sheep milk production and composition, and on performance of their lambs during the first four months of age. The work was developed with Santa Inês and Lacaune x Santa Inês crossbred ewes. The average milk production was: ½ Lacaune, 1,550.8mL/day; ¾ Lacaune, 1,337.6mL/day; and Santa Inês, 1,005.8mL/day. There was an effect of genotype on some constituents of milk (fat and protein). For the performance of the lambs, there was an effect of maternal genotype (P<0.05) on the following biometric measurements: chest circumference, width of chest, width of rump, length of the shoulder length of leg, and perimeter of shank.