Nutritional value of selected lucerne cultivars
Eliza Gaweł
iung@iung.pulawy.plZakład Uprawy Roślin Pastewnych, Instytut Uprawy Nawożenia i Gleboznawstwa, Puławy (Poland)
Janusz Żurek
Zakład Uprawy Roślin Pastewnych, Instytut Uprawy Nawożenia i Gleboznawstwa, Puławy (Poland)
Abstract
The impact of the first cutting date on quality indicators of the Polish hybrid lucerne cv. Kometa of the hay type, French lucerne cv. Luzelle pasture type and the multifoliate cv. Legend originating from the USA was studied in 1998–2000. The first cut of lucerne was done on four dates: 1st date - stand 30 cm high (vegetative stage), the other three dates in weekly intervals. Lucerne herbage was analyzed for mineral composition, crude fiber content, fiber content stems, dry mass, energy and protein values. The subsequent harvests were made following 35 days of regrowth. The data indicate that the date of the first cut is of decisive importance with respect to the effect on chemical composition, energy and protein value of lucerne forage. Delayed first harvest dates i.e. at full budding and at the end of budding the lucerne herbage resulted an increase of dry matter content as well as contents of crude fiber, NDF, ADF, cellulose, ADL and organic matter. The percentage of leaves in the total herbage and total N content decreased. There was also a decrease in the digestibility of organic matter, in energy value and in protein value of lucerne forage. The Polish lucerne cultivar Kometa was the best performer with respect to chemical composition. It also showed the lowest NDF fraction content of the whole plants and the lowest lignin content of stems and a slightly higher energy concentration.
Keywords:
ADF, fractions of fibre, lucerne, digestibility, energy value, protein valueReferences
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Authors
Eliza Gawełiung@iung.pulawy.pl
Zakład Uprawy Roślin Pastewnych, Instytut Uprawy Nawożenia i Gleboznawstwa, Puławy Poland
Authors
Janusz ŻurekZakład Uprawy Roślin Pastewnych, Instytut Uprawy Nawożenia i Gleboznawstwa, Puławy Poland
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