African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6693

Full Length Research Paper

Dry matter intake, dry matter digestibility and growth performance in goats fed grass-based diet (Brachiaria or Cenchrus) compared with a concentrate-based diet

Peter Rogers Ruvuga
  • Peter Rogers Ruvuga
  • Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, Box 7024, SE-750 07 Uppsala, Sweden.
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Ewa Wredle
  • Ewa Wredle
  • Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, Box 7024, SE-750 07 Uppsala, Sweden.
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George Ferdinand Fupi
  • George Ferdinand Fupi
  • Tanzania Livestock Research Institute - Kongwa, P. O. Box 5, Kongwa, Tanzania.
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Christopher Augustino Mtwange
  • Christopher Augustino Mtwange
  • Tanzania Livestock Research Institute - Kongwa, P. O. Box 5, Kongwa, Tanzania.
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Boniface Richard Kasiba
  • Boniface Richard Kasiba
  • Tanzania Livestock Research Institute - Kongwa, P. O. Box 5, Kongwa, Tanzania.
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Ismail Saidi Selemani
  • Ismail Saidi Selemani
  • Department of Animal, Aquaculture and Range Sciences, Sokoine University of Agriculture, P. O. Box 3004, Chuo Kikuu, Morogoro Tanzania.
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Cecilia Kronqvist
  • Cecilia Kronqvist
  • Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, Box 7024, SE-750 07 Uppsala, Sweden.
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  •  Received: 07 September 2021
  •  Accepted: 02 November 2021
  •  Published: 31 January 2022

Abstract

Dry matter digestibility (DMD), dry matter intake (DMI) and growth performance of concentrate- and forage-based diets were investigated using 24 growing Blended goats (12 males, 12 females) weighing 16.5±1.2 kg (mean±sd). Goats were blocked by sex and assigned randomly to three dietary treatments that were fed for 10 weeks, after two weeks of adaptation. Dietary treatments were MRG (40% maize bran, 40% rice bran, 20% Gliricidia leaf meal), BG (80% Brachiaria brizantha cv. Piatã, 20% Gliricidia leaf meal) and CG (80% Cenchrus ciliaris, 20% Gliricidia leaf meal). All diets contained sufficient nutrients to meet the requirements of growing goats. The MRG diet had lower DMI than CG, likely because MRG had small particle size and goats adapted slowly to that diet. Average daily weight gain was 10.7, 9.9 and 22.8 g/day for MRG, BG, and CG respectively, and did not differ among the diets. Goats fed MRG had lower overall live weight change than goats fed CG, while goats fed BG were intermediate. These findings indicate that B. brizantha cv. Piatã and C. ciliaris are equally useful as supplementary feedstuffs for growing goats during the dry season.

Key words: Brachiaria brizantha cv. Piatã, Cenchrus ciliaris, maize bran, rice polish, Gliricidia sepium.