The Effects of Urea and Molasses Addition Into Corn Harvested at Early-Milk Stage on Silage Quality and Digestible Dry Matter Yield

Authors : Nihat DENEK

Pages : 123-130

View : 10 | Download : 5

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The objective of this study was to evaluate the effects of the addition of 0.5% urea or 0.5% urea plus 4% insert ignore into journalissuearticles values(w/w); molasses into corn varieties insert ignore into journalissuearticles values(Rx-947, 33-94, Frassino, and Arifiye); harvested at the early-milk stage on silage quality, in vitro digestibility and digestible dry matter insert ignore into journalissuearticles values(DM); yield. The addition of urea into silage increased the CP content insert ignore into journalissuearticles values(P < 0,05);. The neutral detergent fiber and acid detergent fiber contents of the control silages were 69.40 and 38.68 for Rx-947, 69.34 and 38.69 for 33-94, 62.67 and 34.93 for Frassino, and 64.35 and 37.04 for Arifiye insert ignore into journalissuearticles values(P < 0,05);. The addition of urea or urea plus molasses into silage increased the silage pH in all varieties, except for Rx-947 insert ignore into journalissuearticles values(P < 0,05);. The lactic, acetic, propionic and butyric acid contents of the silage samples were between 23.2 and 153.3, 7.8 and 23.4, 0.6 and 1.6, and 0.0 and 0.54 g/kg DM, respectively. The addition of urea or urea and molasses into Rx-947 and Frassino varieties and the addition of urea only into the 33-94 variety increased silage lactic acid levels. The addition of urea and molasses into Rx-947, Frassino and Arifiye varieties also increased silage acetic acid levels insert ignore into journalissuearticles values(P < 0,05);. There was a significant difference only between the Frassino and Arifiye varieties on this parameter insert ignore into journalissuearticles values(P < 0,05);. The addition of urea only into silage decreased DM digestibility; the addition of molasses with urea, however, eliminated this negative effect of urea on digestibilit in all varieties, except for Frassino insert ignore into journalissuearticles values(P < 0,05);. Digestible DM yields of untreated silage were 863.68, 1142.43, 1044.43, and 1075.07 kg/decare insert ignore into journalissuearticles values(10 decares = 1 hectare); for Rx-947, 33-94, Frassino and Arifiye, respectively insert ignore into journalissuearticles values(P < 0,05);. The digestible DM yield of untreated Rx-947 silage was significantly lower than those of the others insert ignore into journalissuearticles values(P < 0,05);. It can be concluded that corn varieties harvested at the early-milk stage insert ignore into journalissuearticles values(20% DM); can be ensiled, and that urea and molasses can be used as silage additive to increase CP and energy content of silages.
Keywords : Corn silage, urea and molasses addition, in vitro digestibility