Características do sistema produtivo da pecuária no município de Santarém, Pará

Abstract

RESUMOCom o objetivo de identificar as principais falhas no sistema de produção que limitam a pecuária em Santarém, Pará, foram entrevistados, ao acaso, 21 pecuaristas (90,5% de corte -cria, recria e engorda; 9,5% de leite), proprietários de 10% da população de bovinos do município. 71,4% das propriedades tinham currais para manejo do gado, entretanto apenas 38,1% possuíam balança e 23,8% tronco de contenção. A Brachiaria brizantha estava presente em todas as fazendas, sendo usada exclusivamente em 42,9% das propriedades. A disseminação de plantas invasoras (61,9%) foi considerada a principal dificuldade no manejo das pastagens. Constatou-se que 76,2% dos pecuaristas utilizam misturas minerais com macro e micro-elementos, geralmente de formulações comerciais, enquanto que 19% utilizam apenas sal comum, enriquecido com micro-elementos. A concentração de fósforo (P) na mistura mineral estava abaixo do recomendado para bovinos de corte em 76,9% das propriedades e apenas 19% das propriedades possuía cochos para suplementação mineral adequada.PALAVRAS-CHAVE: Bovinos, Minerais, Suplementação, Fósforo, Manejo de pastagens. Characterization of cattle production systems in Santarém, Pará, Brazil ABSTRACTWith the objective of identifying the main problems of cattle nutrition in the production systems of Santarém, Pará, Brazil, ranchers in different regions of the municipality and who owned 10% of the municipality's animals were interviewed at random. The ranchers raised mostly beef cattle; only 9.5% had dairy cattle. The infrastructure conditions are inappropriate; only 23.8% of the ranches have adequate facilities for beef cattle management and 61.9% of the ranchers do not consider weight control. Weed invasion was considered the main problem of the pastures (61.9%). The most common forage was Brachiaria brizantha, used exclusively in 42.9% of the ranches. 76.2% of the ranchers used a complete mineral supplement, with macro and micro elements, while 19% used only salt (NaCl) with micro elements; the other 5% did not use mineral supplements at all. The phosphorus concentration in the mineral supplement at 76.9% of the ranches was less than the minimum level suggested for beef cattle and only 19% of the ranches had appropriate mineral feeders.

Effect of oestrous resynchronization on the reproductive efficiency of zebu cows

“…The differences in the reported studies could be attributed to several different factors. For example, different progesterone sources used in the synchronization protocol (Patron et al, ), farm management and mineral supplementation (Minervino, Cardoso, & Ortolani, ), body condition scores of cows (Pereira et al, ) and control of reproductive diseases in the herd (El‐Tarabany & AL‐Marakby, ), which can all affect the pregnancy rates after TAI, making it difficult to compare across studies. Oestrous resynchronization reduces the service time and therefore increases the reproductive efficiency of the herd (Sá Filho et al, ).…”

Arctiinae (Lepidoptera, Arctiidae) ocorrentes em uma área de pastagem na Amazônia Oriental em Altamira, Pará, Brasil

“…A pecuária é a principal atividade econômica em 51% dos municípios paraenses. (Minervino et al 2008).…”

Occurrence of antibodies anti-Neospora caninum, anti-Toxoplasma gondii, and anti-Leishmania chagasi in serum of dogs from Pará State, Amazon, Brazil

“…The state of Pará is the most important cattle production state of the Amazon region, and recent study showed a widespread occurrence of N. caninum in cattle (Minervino et al 2008a, Minervino et al 2008b) and buffaloes in this region. In the same state, a high occurrence of visceral leishmaniasis in humans was diagnosed, with 346 cases and 14 deaths registered in 2008 (Ministério da Saúde 2008).…”