Feeding value estimation of new introduced forae pea (Pisum sativum L.) varieties
2012
Naydenova, Yordanka A. (Institute of Forage Crops, Pleven (Bulgaria)) | Pachev, Ivan D. (Institute of Forage Crops, Pleven (Bulgaria)) | Petkova, Mariana A. (Institute of Animal Science, Kostinbrod (Bulgaria))
The general composition, plant cell walls fiber components content, in vitro digestibility and general feeding characteristics in forage quality evaluation of green mass of forage pea (Pisum sativum L.) spring forms in field trial – competitive variety testing, carried out at the Institute of Forage Crops – Pleven, Bulgaria (2009-2011) were studied. Four new introduced Ukrainian high productive varieties Kamerton, Glyans, Modus, Svit and Bulgarian standard variety Pleven 4 were harvested at the three vegetative stages – budding, flowering and full pod formation. Forage quality of the whole pea plants was evaluated by the parameters of general composition, plant cell walls fiber components content, digestibility, protein and energy feeding value. The standard variety Pleven 4 characterized by highest forage quality – highest protein content 18,0%, highest digestibility 74,9% and lowest plant cell walls fiber components content: NDF 36,4%, ADF 29,02%, ADL 4,57%. The new introduced Ukrainian varieties, Glyans and Kamerton show higher forage quality: higher protein content 13,3% , lower fiber content: crude fiber 23%, NDF 42-41%; ADF 30-31,5%; ADL 5,2-5,4%, respectively and digestibility 71% in comparison with varieties Svit and Modus. Energy feeding value of standard variety Pleven 4 is highest but in the group of Ukrainian varieties the highest energy value characterized Modus and Kamerton. The standard Pleven 4 distinguish highest protein feeding value: mean values for three stages – TDP 135 g kg-1, PDIN 113,2 g kg-1, PDIE 101,2 g kg-1, and for Ukrainian varieties – variety Kamerton: TDP 89,4 g kg-1, PDIN 83,4 g kg-1, PDIE 89,6 g kg-1, followed by variety Glyans and variety Svit.
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