Degradación ruminal de henos de prado permanente: Efecto del grado de madurezRumen degradation of hay from permanent meadows: Effect of maturity stage

  1. F. Javier Giráldez García 1
  2. J.S. Gpnzález Álvarez 1
  3. Francisco Javier Ovejero Martínez 1
  4. Carmen Valdés Solís 1
  1. 1 Universidad de León
    info

    Universidad de León

    León, España

    ROR https://ror.org/02tzt0b78

Aldizkaria:
Archivos de zootecnia

ISSN: 0004-0592

Argitalpen urtea: 1993

Alea: 42

Zenbakia: 156

Orrialdeak: 13-20

Mota: Artikulua

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Laburpena

The effect of maturity stage at harvest on hay DM, CP and NDF rumen degradation has been studied using 24 samples (from 8 permanent meadows - 4 valleys and 2 altitudes-and 3 cutting times) and the nylon bag technique with three rumen fistulated sheep and 6, 12, 24 and 48 h as incubation times. Hay from the latest cut had lower CP and higher NDF contents, respectively. The CP solublefraction decreased (p<0.05) as the hay maturity stage increased, but this did not affected either the DM soluble fraction or the NDF lag time (p>0.05). The DM and NDF rate of degradation was unaffected (p>0.05) by the maturity stage and the changes in CP rate of degradation were inconsistent. The role of these changes in the hay rumen degradation kinetic in relation with the rumen microbial population and the voluntary intake of hay by the animal is discussed.

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