Effect of Feeding Molasses-added Urea-treated Rice Straw to Crossbred Holstein Cows Supplemented with Good Quality Feed Block
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Abstract
The treatment of rice straw with urea and molasses could improve crude protein and dry matter digestibility from normal urea-treated straw. The experiment was also counducted to determine milk production responses of crossbred Holstein cows to molasses-added urea-treated rice straw feeding. Rice straw was treated by 6% urea and 5% molasses under airtight condition. Cows were fed with dried molasses-added urea-treated rice straw compared to dried urea-treated rice straw and fresh machine-baled molasses-added urea-treated rice straw. All cows were supplemented with concentrates at 1 kg per 2 kg of milk production and free choice of good quality molasses licks. Milk yield (17.4-17.9 kgFCM/d), milk protein (2.90-2.94%), solid not fat (8.6-8.7%) and lactose (5.0-5.1%) contents of milk were not significantly different among the groups. Cows fed with fresh molasses-added urea-treated rice straw showed higher roughage dry matter intake (8.1 kgDM/d) and milk fat content than the others. Feeding of molasses-added treated straw tended to improve liveweight of milking cows. Average molasses licks dry matter intake found to be 600-700 g/cow/d which was not different among the groups.
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