RESUMO
Three hundred twenty-two lactating Friesian cows were examined for mastitis by different diagnostic techniques. The predominant pathogens encountered were Staphylococci, Streptococci, Corynebacterium and Escherichia coli spp.
Assuntos
Infecções Bacterianas/veterinária , Mastite Bovina/epidemiologia , Animais , Infecções Bacterianas/epidemiologia , Bovinos , Feminino , Mastite Bovina/microbiologia , SudãoRESUMO
Zinc deficiency was diagnosed in a sheep farm in Khartoum Province; the young sheep and lambs were mostly affected. Skin lesions, depression, wool eating, flexed knees and a markedly stiff gait were observed. Histopathology of the skin revealed mainly hyperkeratosis accompanied sometimes by parakeratosis. The animals responded rapidly to oral administration of zinc oxide.
Assuntos
Doenças dos Ovinos/epidemiologia , Zinco/deficiência , Animais , Feminino , Masculino , Ovinos , Doenças dos Ovinos/tratamento farmacológico , Sudão , Óxido de Zinco/uso terapêuticoRESUMO
Extra iron (5 ppm) in a normal commercial milk replacer given from the end of the sixth week until the end of the sixteenth week of the fattening period influenced food conversion positively without a loss in meat quality. Even when the extra iron was given to the end of the fattening period there was no perceptible improvement of the haematological status of the calf, though liver iron concentration was increased. During all the experiments no stainable iron could be found in bone marrow smears. Iron and copper concentration measured in liver biopsies appeared to give reliable information about, respectively, iron and copper status of the veal calf. In relation to the colour of the meat at slaughter the blood haemoglobin concentration during the fattening period was found to be the most reliable parameter.
Assuntos
Ração Animal , Bovinos/crescimento & desenvolvimento , Ferro/administração & dosagem , Carne , Animais , Bovinos/sangue , Cor , Cobre/metabolismo , Fezes/análise , Cabelo/metabolismo , Absorção Intestinal , Ferro/metabolismo , Fígado/metabolismo , Masculino , Músculos/metabolismo , Baço/metabolismoRESUMO
The distribution of iron and copper in the liver and spleen of veal calves was determined in a group of calves fattened with a commercial milk replacer supplemented with 5 ppm iron and in a control group fed the unsupplemented milk replacer. No marked variations were detected in the distribution of iron and copper. A liver biopsy is therefore likely to be a representative sample of the whole liver with respect to iron and copper concentration.