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Effect of freeze-dried pasture herbage on ileal digestibility of amino acids and fatty acids in chickens

Author

Listed:
  • Miloš Skřivan
  • Milan Marounek

    (Department of Nutrition Physiology and Animal Product Quality, Institute of Animal Science, Prague-Uhříněves, Czech Republic)

  • Michaela Englmaierová

    (Department of Nutrition Physiology and Animal Product Quality, Institute of Animal Science, Prague-Uhříněves, Czech Republic)

  • Eva Skřivanová

    (Department of Nutrition Physiology and Animal Product Quality, Institute of Animal Science, Prague-Uhříněves, Czech Republic)

  • Kateřina Růnová

    (Department of Nutrition Physiology and Animal Product Quality, Institute of Animal Science, Prague-Uhříněves, Czech Republic)

Abstract

The ileal digestibility of amino acids and fatty acids in young chickens fed control diet or experimental diets supplemented with freeze-dried pasture herbage at 20 or 40 g/kg was studied. Control diet contained wheat, maize, and soybean meal. Predominant species in the pasture herbage harvested in May were Lolium perenne, Festuca pratensis, and Trifolium pratense. Freeze-dried pasture herbage contained less protein (169 g/kg) and fat (24 g/kg) and more neutral detergent and acid detergent fibre (340 and 210 g/kg) and tannins (12.38 g/kg) than control diet. Concentrations of amino acids, except phenylalanine and threonine, were lower in pasture herbage than in control feed. In both the control feed and freeze-dried pasture herbage, unsaturated fatty acids occurred in higher proportions than saturated fatty acids. In freeze-dried pasture herbage linolenic acid was the main fatty acid. In chickens fed freeze-dried pasture herbage the ileal digestibility of amino acids and fatty acids decreased in a dose-dependent manner. Freeze-dried pasture herbage at 4% in diet had negative effect (P < 0.05) on the digestibility of amino acids and fatty acids in comparison with control diet. But there was no significant effect of 2% freeze-dried pasture herbage in diet on amino acids digestibility. This suggests that pasture herbage contains anti-nutritional factors that inhibit proteolysis and lipolysis. The effect of pasture herbage on digestibility was variable. In chickens fed diets containing 4% freeze-dried pasture herbage, apparent ileal digestibility of amino acids varied from 0.39 (cysteine) to 0.91 (methionine). Variability in the ileal digestibility of fatty acids was less pronounced (from 0.65 to 0.89).

Suggested Citation

  • Miloš Skřivan & Milan Marounek & Michaela Englmaierová & Eva Skřivanová & Kateřina Růnová, 2018. "Effect of freeze-dried pasture herbage on ileal digestibility of amino acids and fatty acids in chickens," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 63(6), pages 222-229.
  • Handle: RePEc:caa:jnlcjs:v:63:y:2018:i:6:id:114-2017-cjas
    DOI: 10.17221/114/2017-CJAS
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    References listed on IDEAS

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    1. M. Skřivan & S.H. Pickinpaugh & V. Pavlů & E. Skřivanová & M. Englmaierová, 2015. "A mobile system for rearing meat chickens on pasture," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 60(2), pages 52-59.
    2. Věra Skřivanová & Eva Tůmová & Michaela Englmaierová & Darina Chodová & Miloš Skřivan, 2017. "Do rearing system and free-range stocking density affect meat quality of chickens fed feed mixture with rapeseed oil?," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 62(4), pages 141-149.
    3. P. Homolka & V. Koukolová & Z. Němec & Z. Mudřík & B. Hučko & J. Sales, 2008. "Amino acid contents and intestinal digestibility of lucerne in ruminants as influenced by growth stage," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 53(12), pages 499-505.
    4. M. Wencelová & Z. Váradyová & P. Pristaš & K. Čobanová & I. Plachá & S. Kišidayová, 2016. "Effects of diet supplementation with herbal blend and sunflower seeds on fermentation parameters, microbial population, and fatty acid profile in rumen of sheep," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 61(12), pages 551-559.
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    Cited by:

    1. Michaela Englmaierová & Miloš Skřivan & Tomáš Vít, 2019. "Alfalfa meal as a source of carotenoids in combination with ascorbic acid in the diet of laying hens," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 64(1), pages 17-25.

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