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Amino acid contents and intestinal digestibility of lucerne in ruminants as influenced by growth stage

Author

Listed:
  • P. Homolka

    (Department of Nutrition and Feeding of Farm Animals, Institute of Animal Science, Prague-Uhříněves, Czech Republic)

  • V. Koukolová

    (Department of Nutrition and Feeding of Farm Animals, Institute of Animal Science, Prague-Uhříněves, Czech Republic)

  • Z. Němec

    (Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences in Prague, Prague, Czech Republic)

  • Z. Mudřík

    (Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences in Prague, Prague, Czech Republic)

  • B. Hučko

    (Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences in Prague, Prague, Czech Republic)

  • J. Sales

    (Department of Nutrition and Feeding of Farm Animals, Institute of Animal Science, Prague-Uhříněves, Czech Republic)

Abstract

Lucerne (Medicago sativa L. var. Palava), harvested at four successive dates over a 30-day period, was evaluated for chemical composition (dry matter, organic matter, crude protein, ether extract, crude fibre, nitrogen-free extract, neutral detergent fibre, acid detergent fibre, acid detergent lignin), amino acid contents and intestinal digestibility in dairy cows. Dry matter (r = 0.78), organic matter (r = 0.95), crude fibre (r = 0.91), neutral detergent fibre (r = 0.94), acid detergent fibre (r = 0.79) and acid detergent lignin (r = 0.48) presented positive linear correlation coefficients (r) with growth stage, whereas crude protein (r = -0.96), ether extract (r = -0.86) and nitrogen-free extract (r = -0.70) showed negative relationships. Total essential amino acid content decreased (r = -0.94) from 84.1 to 55.3 g/kg of dry matter with maturity, with r-values higher than -0.90 obtained between growth stage and contents of lysine, methionine, threonine and valine. With the exception of tyrosine (r = -0.68), r-values between growth stage and individual non-essential amino acids were all higher than -0.90. Total amino acid (r = -0.98) and nitrogen (r = -0.99) contents presented comparable tendencies with successive sampling times. Whereas no definite trends were detected for the amino acid composition of rumen incubated (16 hours) lucerne samples, the intestinal digestibility of total essential (r = -0.78), total non-essential (r = -0.58) and total (r = -0.69) amino acids as well as nitrogen (r = -0.99) decreased with growth. However, due to a small sample size (n = 4), most linear relationships between constituents and growth stage were insignificant. It can be concluded that, although limited in the sample size, this report presents information on the decrease in amino acid contents and intestinal amino acid digestibility as growth proceeds in lucerne (var. Palava) produced in the Czech Republic, which could be utilized in the feeding of ruminants.

Suggested Citation

  • 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.
    • Handle: RePEc:caa:jnlcjs:v:53:y:2008:i:12:id:367-cjas
    DOI: 10.17221/367-CJAS
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    References listed on IDEAS

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    1. F. Jančík & P. Homolka & B. Čermák & F. Lád, 2008. "Determination of indigestible neutral detergent fibre contents of grasses and its prediction from chemical composition," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 53(3), pages 128-135.
    2. B. Niwińska & J.A. Strzetelski & J. Kowalczyk & F. Borowiec & P. Domański, 2005. "The effect of phenological stage and season on nutritive value, chemical composition and nutrient digestibility of lucerne (Medicago sativa L.) green forage in the alimentary tract of cattle," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 50(11), pages 511-518.
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    4. P. Homolka & J. Harazim & J. Třináctý, 2007. "Nitrogen degradability and intestinal digestibility of rumen undegraded protein in rapeseed, rapeseed meal and extracted rapeseed meal," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 52(11), pages 378-386.
    5. V. Christodoulou & V.A. Bampidis & P.H. Robinson & C.J. Israilides & A. Giouzelyiannis & A. Vlyssides, 2007. "Nutritional and net energy value of fermented olive wastes in rations of lactating ewes," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 52(12), pages 456-462.
    6. B. Písaříková & J. Peterka & M. Trčková & J. Moudrý & Z. Zralý & I. Herzig, 2007. "The content of insoluble fibre and crude protein value of the aboveground biomass of Amaranthus cruentus and A. hypochondriacus," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 52(10), pages 348-353.
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    1. J. Hakl & J. Šantrůček & P. Fuksa & L. Krajíc, 2010. "The use of indirect methods for the prediction of lucerne quality in the first cut under the conditions of Central Europe," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 55(6), pages 258-265.
    2. F. Jančík & V. Koukolová & P. Homolka, 2010. "Ruminal degradability of dry matter and neutral detergent fibre of grasses," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 55(9), pages 359-371.
    3. B. Hučko & V.A. Bampidis & A. Kodeš & V. Christodoulou & Z. Mudřik & K. Poláková & V. Plachý, 2009. "Rumen fermentation characteristics in pre-weaning calves receiving yeast culture supplements," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 54(10), pages 435-442.
    4. F. Jančík & V. Koukolová & P. Kubelková & B. Čermák, 2009. "Effects of grass species on ruminal degradability of silages and prediction of dry matter effective degradability," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 54(7), pages 315-323.
    5. 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.

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