African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6688

Full Length Research Paper

Intake and some indicators of the metabolic status of native ewes in pregnancy and supplemented in grazing system

Tairon Pannunzio Dias e Silva*
  • Tairon Pannunzio Dias e Silva*
  • School of Zootecnia, Federal University of Piauí, Campus Professora Cinobelina Elvas, Bom Jesus, Piauí, Brazil., Laboratory of Animal Nutrition, Center of Nuclear Energy in Agriculture, University of São Paulo, Piracicaba, São Paulo, Brazil.
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Carlo Aldrovandi Torreao Marques
  • Carlo Aldrovandi Torreao Marques
  • School of Zootecnia, Federal University of Piauí, Campus Professora Cinobelina Elvas, Bom Jesus, Piauí, Brazil.
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Jacira Neves da Costa Torreao
  • Jacira Neves da Costa Torreao
  • School of Zootecnia, Federal University of Piauí, Campus Professora Cinobelina Elvas, Bom Jesus, Piauí, Brazil.
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Marcos Jacome de Araujo
  • Marcos Jacome de Araujo
  • School of Zootecnia, Federal University of Piauí, Campus Professora Cinobelina Elvas, Bom Jesus, Piauí, Brazil.
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Leilson Rocha Bezerra
  • Leilson Rocha Bezerra
  • School of Zootecnia, Federal University of Piauí, Campus Professora Cinobelina Elvas, Bom Jesus, Piauí, Brazil.
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Arturene Marques Rocha
  • Arturene Marques Rocha
  • School of Zootecnia, Federal University of Piauí, Campus Professora Cinobelina Elvas, Bom Jesus, Piauí, Brazil.
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Sheila Vilarindo de Sousa
  • Sheila Vilarindo de Sousa
  • School of Zootecnia, Federal University of Piauí, Campus Professora Cinobelina Elvas, Bom Jesus, Piauí, Brazil.
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  •  Received: 11 November 2014
  •  Accepted: 09 January 2015
  •  Published: 22 January 2015

Abstract

The present study was to evaluate the effect of level of concentrate supplementation on the intake and some indicators of the metabolic parameters of native ewes in pregnancy and supplemented in a grazing system. 28 lactating ewes were selected: 14 Morada Nova (MN) and 14 Santa Inês (SI) were distributed in an experimental design completely randomized in 2x2x3 factorial arrangement with two breeds (MN and SI), two levels of supplementation (0.5 and 1.5% body weight) and three experimental periods (75, 105 and 135 days of pregnancy). The concentrate intake and total dry matter intake (DMI) was higher (P <0.05) on SI ewes and, in animals supplemented with 1.5% of concentrate, where the pregnancy progresses promoted the progressive decrease of DMI. There was breed effect (P <0.05) on metabolic parameters evaluated, in which the two breeds presented the same trend of mobilization of body reserves with decrease (P <0.05) in the body condition score close of parturition. Supplementation did not influence in the metabolic parameters. The metabolic parameters were influenced by breed, however, with normal values, indicating a good adaptability of the MN and SI breeds at the experimental conditions, promoting an evolution of production rates with 0.5% of concentrate supplementation.

 

Key words: Blood metabolites, native ewes, nutrition, semi-arid.