Evaluation of Technical Glycerols from “Biodiesel” Production as a Feed Component in Fattening of Pigs
نویسنده
چکیده
The utilization of two different technical glycerols from “Biodiesel” production as a feed component was investigated in a feeding experiment using 6 x 6 barrows (Pietrain x Fl). Glycerol was included into the diets in amounts of 5 and 10% (Diets 3-6). The control diet [l] contained no glycerol, whereas diet 2 was supplemented with 10% pure glycerol. The contents of dry matter of the two technical glycerols were 77.6% and 99.7%. respectively. The contents of ash were 18.7% and 4.8010, respectively. The feeding performance of the pigs in the growing period was elevated by 7.5% in all groups which received glycerol compared to control group 1. The improvement of the daily gain depended strongly on the actual intake of glycerol in this growing period. This effect could not be observed in the finishing period. The dietary treatments did not have any significant effects on meat quality. Glycerol reduced the water content in tendency. There were no differences between technical and pure glycerol concerning the feeding performance. A possible contamination with ash and a dilution with water should be considered in regards to the nutritive value in pigs. Bewertung von technischem Glycerol aus der ,,Biodiesel“-Produktion fur die Schweinernast. In einem Futterungsversuch mit 6 x 6 Borgen (Pietrain x F1) wurde die Einsatzmoglichkeit von zwei verschiedenen technischen Glycerinen aus der Biodieselproduktion wahrend einer Mastperiode als Rationskomponente in Hohe von 5 bzw. 10% Glycerin im Vergleich zu einer Kontrollgruppe 1 (ohne Glycerin) und einer Kontrollgruppe 2 (10% reines Glycerin) gepruft. Der Trockenmassegehalt (TS) der technischen Glycerine \ag bei 77.6% bzw. 99,7O/o, und die Rohaschegehalte betrugen 18,7% bzw. 4.8%. Unabhangig von der Qualitat der Glycerine war die Mastleistung in der Vormastperiode gegeniiber der Kontrollgruppe 1 in allen Glyceringruppen um durchschnittlich 7.5% erhoht. Dabei bestand in dieser Periode ein enger Zusammenhang zwischen der tatsachlichen Glycerinaufnahme und der taglichen Lebendmassezunahme. In der Hauptmastperiode wurde dieser Effekt trotz ebenfalls tendenziell erhohter Futteraufnahme nicht bestatigt. Die Fleischbeschaffenheit wurde nicht signifikant verandert. In der Tendenz ergaben sich geringere Wassergehalte im Fleisch nach Glyceringabe. Zwischen reinem und technischem Glycerin gab es keine Unterschiede in der erzielten Mastleistung. Bei Einsatz von technischen Glycerinen als Futterkomponente muO hinsichtlich der Einsatzempfehlungen der Mineralstoffund Wassergehalt berucksichtigt werden.
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تاریخ انتشار 2006