Data/hora: 06/06/2024 05:25:00

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 02/06/2003
Data da última atualização: | 14/03/2017
Autoria: | CONRAD, J. H.; MCDOWELL, L. R.; ELLIS, G. L.
Título: | A review of mineral deficiency syndromes in ruminants in humid tropical regions.
Ano de publicação: | 1984
Fonte/Imprenta: | Preventive Veterinary Medicine, v.2, n.1/4, p.603-614, 1984.
Idioma: | Inglês
Conteúdo: | A periodontal disease widely known as "cara inchada" (swollen face) affects 10 to 20% of the young cattle in certain regions of Central Brazil. Clinical symptoms indicate a periodontitis in nursing calves as young as 30 days of age, followed by loosening and shedding of the teeth (premolar and molar) and enlargement of the maxillary and, less frequently, mandibular bones. These oral lesions are accompanied by emaciation, severe diarrhea, acromotrichia and retarded growth. Gingivitis appears to be aggravated by forage consumption and reduced integrity of the periodontal ligament permits forage impaction in this damaged tissue which results in an alveolas "pyorrhea" and chronic ossifying periostitis. Normal mastication is impeded resulting in unproductive animals and death from starvation. Controlled experiments and extensive field trials indicate that Low Cu and Zn, in addition to the Cu-Mo-S interrelationship, are involved in periontitis of Brazilian cattle (Camargo, Veiga and Cobrad, 1981). A wasting disease called "secadera" is probably the most common cattle disease in the Eastern Plains of Colombia. In a study of 37 ranches, secadera was found on 32% of the ranches in the wet season and 42% of the ranches in the dry season (Corrier et al., 1978). Contributing factors are the interaction between nutritional deficiencies and infectious diseases. The former due to poor, highly leached, acid soils and extended dry period and the latter due to hemoparasitic diseases including anaplasmosis, babesiosis and trypanosomiases. Secadera has been described as progressive inanition in which there is evidence of failure in intermediary metabolism with symptoms as follows: pathogenic sign of incipt secadera in light-skinned animals is a marked darkening, made more visible by britte, dry hair which tends to curl. Later the skin thickens and loses pliability, and there is a rapid and continuing loss of weight. Approximately 50% of the cases develop muscular weakness with 12% showing incoordination and taxia involving the rear legs (Mullenax, 1979). Zinc deficiency appears to be a contributing factor but the most satisfactory treatment has been adequate consumption of a mineral supplement well fortified with copper, sulfur, selenium and zinc (Miles and McDowell, 1983).
Palavras-Chave: | Humid tropical region; Mineral deficiency syndromes; Regiao tropical umida; Ruminant; Ruminate; Sindrome de deficiencia mineral; Swollen face.
Thesagro: | Cara Inchada.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (53362-1) - ADC - SP - PP - SP16472 -  - 16472 - DIS