By-Product Feeds for Lactating Dairy Cows: Effects of Cottonseed Hulls, Sunflower Hulls, Corrugated Paper, Peanut Hulls, Sugarcane Bagasse, and Whole Cottonseed with Additives of Fat, Sodium Bicarbonate, and Aspergillus oryzae Product on Milk Production
1984; Elsevier BV; Volume: 67; Issue: 12 Linguagem: Inglês
10.3168/jds.s0022-0302(84)81656-2
ISSN1529-9066
AutoresH.H. Van Horn, B. Harris, M.J. Taylor, K.C. Bachman, C.J. Wilcox,
Tópico(s)Phytoestrogen effects and research
ResumoIn Experiment 1, Holstein cows (32) fed diets in three 28-day periods were used to evaluate a 3 x 2 x 2 factorial arrangement of fiber sources (sunflower hulls, pelleted cottonseed hulls, and pelleted undelinted cottonseed hulls at 35% of dry matter), fat (0 or 2.5%), and sodium bicarbonate (0 or 1.0%).Sixteen cows also received Aspergillus oryzae product (56.7 g/day) continuously.Sunflower hulls decreased daily intake (19.4 versus 25.1 kg), milk (23.3 versus 26.5 kg), milk protein (2.85 versus 2.95%), and body weight change (-.08 versus .90kg), but milk fat percent was higher (3.54 versus 3.32%).Sunflower hulls depressed digestibility of dry matter, organic matter, and acid detergent fiber.Added fat reduced milk fat and protein percents.Experiment 2 evaluated fiber sources (20% ground corrugated cardboard boxes, combination of 10% cardboard and 10% peanut hulls, or 30% cottonseed hulls), animal fat (0 or 2.5 %), sodium bicarbonate (0 or .75%),and condensed molasses solubles by-product from rum distilling (0 or 10%).Corrugated boxes effected lowest intake (18.0 kg/day), cottonseed hulls highest intake (23.5 kg/day),
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