Bull Calf
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Produção de leite de vaca e desenvolvimento pós-desmama do bezerro.
O objetivo deste resumo é apresentar resultados de trabalhos desenvolvidos na Embrapa Pecuária Sudeste, envolvendo a produção de leite de vacas e o desenvolvimento pós-desmama dos bezerros. Avaliaram-se os efeitos da produção de leite total (produção aos 30 dias mais a produção aos 120 dias após o parto, obtidas pelo método de pesar-mamar-pesar)
RESUMOS DOS TRABALHOS APRESENTADOS NA CONVENÇÃO NACIONAL DE CANCHIM. Publicado em: 2011
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2. Congenital hidranencephaly and cerebellar hypoplasia in water buffaloes / Hidranencefalia e hipoplasia cerebelar congênita em búfalos Murrah
Hereditary hydrancephaly and cerebellar hypolasia are reported in Murrah buffalos. Six calves, one female and 5 male out of 128 born between 2004 and 2008 in a farm in southern Brazil were affected. All affected calves were offspring from the same bull. No affected buffaloes were observed in the descendants of other three bulls used in the farm. Main clinica
Publicado em: 2009
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3. Passive Transfer of Johnin Hypersensitivity with Reactivity Resembling Clinical Paratuberculosis in Calves
Whole blood, white blood cells, plasma, and “febrile plasma” from an artificially hypersensitized bull were transfused, via catheter, into the mesenteric arteries of calves. After 1 to 3 days, the hypersensitivity of each calf was determined by the intra-arterial administration of johnin. Fever and diarrhea followed johnin administration in the calves th
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4. Shedding of Escherichia coli O157:H7 in Dairy Cattle Housed in a Confined Environment following Waterborne Inoculation
A study of Escherichia coli O157:H7 transmission and shedding was conducted with bull calves housed in individual pens within a confined environment. For comparative purposes, the numbers and duration of E. coli O157:H7 shedding in naturally infected calves were monitored after a single purchased calf (calf 156) tested positive prior to inoculation. During t
American Society for Microbiology.
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5. Identification and prevalence of a genetic defect that causes leukocyte adhesion deficiency in Holstein cattle.
Two point mutations were identified within the gene encoding bovine CD18 in a Holstein calf afflicted with leukocyte adhesion deficiency (LAD). One mutation causes an aspartic acid to glycine substitution at amino acid 128 (D128G) in the highly conserved extracellular region of this adhesion glycoprotein, a region where several mutations have been found to c