[Production, chemical composition and fermentative aptitude of two varieties [California 40, Criolla] of alfalfa (Medicago sativa L.) in Valdivia province]
1992
Urzua W, Jose Domingo Eduardo
In order to determine the production, chemical composition and ensilability of two varieties of lucerne, California 40 and Criolla, two experiments were conducted simultaneously. In the ensilability exp. the treatments were determined by three cutting stages; flower bud, 30% of flowering and full flowering. In the fermentation exp. ability, it was determined that only the metabolizable energy was different (P 0,05). The percent DM increased from 23.88% to 34.61%. The metabolizable energy decreased from 2.53 to 2.33 Mcal/kg DM. Both differences were significant (P 0,05). With the advance in maturity all parameters determining the fermentation ability including pH decreased significantly (P 0,05) (Fresh matter, dry matter, % of DM, total protein (%), metabolizable energy (Mcal/kg DM) and botanical composition (% of pure lucerne)). In the second cut the differences obtained were significant. The level of significance were (P 0,05). The production expressed in (kg FM/ha) of California 40 was 36683.83 vs. 37786.76 of Criolla. The dry matter (kg DM/ha) obtained with California 40 was 9084.17 vs. 7716.33 of Criolla. The average percent lucerne in the experimental plots was 66.17% for California 40 vs. 66.75 of Criolla
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