Effects of pastures and stocking rates in seasonality of infective larvae

Authors

  • Delcácio Joaquim da Silva Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Nova Odessa, SP
  • Pedro Biondi Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Estação Experimental de Zootecnia de Pindamonhangaba, Pindamonhangaba, SP
  • Luiz Benito Gambini Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Estação Experimental de Zootecnia de Pindamonhangaba, Pindamonhangaba, SP
  • João Batista Pereira de Carvalho Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Estação Experimental de Zootecnia de Pindamonhangaba, Pindamonhangaba, SP
  • José Vicente Silveira Pedreira Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Nova Odessa, SP

Keywords:

Bovines, verminosis, infective larvae, survival factor, seasonality

Abstract

The experiment was carried out at Estação Experimental de Zootecnia de Pindamonhangaba, State of São Paulo, Brasil, from October,1985 to September, 1988, looking for to evalue the parasitary infections in bovines and the infective larvae (L3) seasonalitv. It was utilized 12 Mantiqueira steers in each year with initial media weight of 150Kg grazing in rotation four paddocks of Para-grass (Brachia­ria mutica, Stapf) and four paddocks of Tangola-grass(Brachiaria mutica x Brachiaria arrecta, Naper) in two grazing pressures, one with 0,19 ha each in 4 animals/ha grazing pressure, other with 0,25 ha each in 3 animals/ha grazing pressure. The rotating grazing allowed helmintic control in the bovines. The bovines grazing Tangola grass showed fali in the haemoglobin (Hb) dosage and haematocrit (Ht) values. Infective larvae number recovering of pastures and faeces were prevalence during experimental period, mantained in the low level of infestation, mainly in the pastures. Infective larvae survival factor (ILSF) calcuated with rain precipitation and temperature allowed to measure the parasitary infection in the pastures. All analysis were tested at 5% level of probability.

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Published

2013-12-04

Issue

Section

FORAGE CROPS AND PASTURES

How to Cite

Effects of pastures and stocking rates in seasonality of infective larvae. (2013). Bulletin of Animal Husbandry, 55(2), 175-183. http://bia.iz.sp.gov.br/index.php/bia/article/view/928

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