Determination of the net energy of wheat silage cut at the dough maturity stage of grain
1993
Succi, G. | Crovetto, G.M. | Tamburini, A. | Rapetti, L. | Galassi, G. (Milan Univ. (Italy). Istituto di Zootecnia Generale)
English. The nutritive value of wheat silage harvested at the dough stage of maturity of grain (35.8% DM, 9.6% CP and 53.3% NDF on DM) was determined with digestibility and calorimetric (respiration chamber) experiment on 6 wethers. DM intake was 1714 g/d (58.5 g/d/kg sup(0.75)). Apparent digestibilities (%) were: DM = 61.4: OM = 63.4; N = 62.7; NDF = 45.1; Energy = 61.2. Gaseous exchanges (L/d/kg sup(0.75)): O2 = 19.4; CO2 = 21.4; CH4 = 1.8; QR = 1.11. Retained energy was 4.8 MJ/d, that is 15.1% of energy ingested. Energy content of wheat silage (MJ/kg DM): GE = 18.7; DE = 11.4; ME = 9.8; NE sub(m) = 6.9; M.F.U. = 0.81/kg DM. C and N balances revealed an average retention of 135 g C and 5 g N/day
Show more [+] Less [-]Italian. Il valore nutritivo del frumento insilato alla maturazione cerosa della granella (35.8% di S.S., 9.6% PG e 53.5% NDF sul secco) e' stato determinato mediante prove di digeribilita' e calorimetria (camere respiratorie) su 6 montoni. L'ingestione di S.S. e' stata pari a 1714 g/d (58.5 g/d/kg sup(0.75)). Digeribilita' apparente (%): S.S. = 61.4: S.O. = 63.4; N = 62.7; NDF = 45.1; Energia = 61.2. Gas consumati o prodotti (L/d/kg sup(0.75)): O2 = 19.4; CO2 = 21.4; CH4 = 1.8; QR = 1.11. L'energia ritenuta e' stata pari a 4.8 MJ/d, pari al 15.1% dell'energia ingerita. Contenuto energetico dell'insilato di frumento (MJ/kg DM): EL = 18.7; ED = 11.4; EM = 9.8; EN inf(m) = 6.9; U.F.L. = 0.81/kg S.S.
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