title: Nutritional and productive performance of dairy cows fed corn silage or sugarcane silage with or without additives.
abstract: The objective of this study was to compare the intake, digestibility, and performance of dairy cows fed corn silage, fresh sugarcane, and sugarcane ensiled in three different forms. Twenty-five Holstein cows at 114 ± 12.6 days in milk (DIM) were used. A randomized block design was adopted, using an arrangement of repeated measures over time. The following treatments were tested: corn silage (CS); fresh sugarcane (FS); sugarcane silage without additives (SCS); sugarcane silage enriched with calcium oxide at 5 g/kg of forage (SCSc); and sugarcane silage enriched with Lactobacillus buchneri at 5 × 10(4) cfu/kg of forage (SCSb). The roughage to concentrate ratio was 60:40 for the CS diet and 40:60 for the sugarcane-based diets. The dry matter intake (DMI) as a function of body weight had a downward trend for the cows fed sugarcane silage, compared with those fed FS. The sugarcane silages had higher digestibilities of dry matter (DM), organic matter (OM), and neutral detergent fiber (NDFap), compared with FS. The use of L. buchneri or calcium oxide improved the diet's digestibility. The use of FS, sugarcane silage, or sugarcane silage with additives had no effects on milk and fat-corrected milk yield, compared to corn silage. Cows fed FS presented lower milk total solids content and had a downward trend for milk fat, compared with cows fed sugarcane-silage diets. Cows fed sugarcane silages produced milk with higher casein stability in the alcohol test than cows fed fresh-sugarcane diet. Sugarcane silage, with or without additives, did not reduce the intake of dairy cows, and the use of additives improved the fiber's digestibility.
authors.affiliation: Department of Animal Science, Federal University of Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.
authors.forename: Felipe Leite
authors.initials: FL
authors.lastname: de Andrade
authors.affiliation: Department of Animal Science, Federal University of Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.
authors.forename: João Paulo Pacheco
authors.initials: JP
authors.lastname: Rodrigues
authors.affiliation: Department of Animal Science, Federal University of Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.
authors.forename: Edenio
authors.initials: E
authors.lastname: Detmann
authors.affiliation: Department of Animal Science, Federal University of Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.
authors.forename: Sebastião de Campos
authors.initials: Sde C
authors.lastname: Valadares Filho
authors.affiliation: Department of Animal Science, Federal University of Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.
authors.forename: Marcelo Messias Duarte
authors.initials: MM
authors.lastname: Castro
authors.affiliation: Department of Animal Science, Federal University of Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.
authors.forename: Aline Souza
authors.initials: AS
authors.lastname: Trece
authors.affiliation: Department of Animal Science, Federal University of Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.
authors.forename: Tadeu Eder
authors.initials: TE
authors.lastname: Silva
authors.affiliation: Department of Animal Science, Federal University of Rio Grande do Sul State, 91540-000, Porto Alegre, Rio Grande do Sul, Brazil.
authors.forename: Vivian
authors.initials: V
authors.lastname: Fischer
authors.affiliation: Faculty of Agriculture and Horticulture, Humboldt University Berlin, Invalidenstraße 42, 10 115, Berlin, Germany.
authors.forename: Kirsten
authors.initials: K
authors.lastname: Weiss
authors.affiliation: Department of Animal Science, Federal University of Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil. marcosinaciomarcondes@gmail.com.
authors.forename: Marcos Inácio
authors.initials: MI
authors.lastname: Marcondes
mesh_terms: D000596:Amino Acids / Q000737:chemistry*; D000821:Animal Feed; D000822:Animal Husbandry; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002417:Cattle; D018556:Crops, Agricultural; D004032:Diet / Q000662:veterinary*; D004043:Dietary Fiber; D002523:Edible Grain; D005260:Female; D008297:Male; D008892:Milk; D011897:Random Allocation; D031786:Saccharum; D012820:Silage; D011795:Surveys and Questionnaires; D013696:Temperature; D003313:Zea mays
chemical_list: D000596:Amino Acids; D004043:Dietary Fiber
keywords: Calcium oxide; Casein stability; Digestibility; Lactobacillus buchneri; Microbial protein synthesis; Milk composition