Document Type : Research Paper
Authors
1 Master's graduate, Department of Animal and Poultry Nutrition, Faculty of Animal Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
2 Assistant Professor, Department of Animal and Poultry Nutrition, Faculty of Animal Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
3 Professor, Department of Animal and Poultry Nutrition, Faculty of Animal Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
4 Ph.D. student, Department of Animal and Poultry Nutrition, Faculty of Animal Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
Abstract
In order to perform this experiment, 21 dairy ewes with three bellies of the dalagh breed with an average weight of 36±3.7 kg were used in 3 treatments and 7 repetitions in the form of a completely randomized design. The treatments included: control treatment, second treatment (ration containing 100 grams of corn steep liquor per kilogram of dry matter consumed) and third treatment (ration containing 200 grams of corn steep liquor per kilogram of dry matter consumed). The results showed that dry matter intake increased with the increase in the level of corn steep liquor in the diet (P≥0.05). There is no significant difference in rumen pH and protozoa population However, rumen ammonia nitrogen concentration increased in corn steep liquor level, rumen ammonia nitrogen concentration also increased (P≥0.05). There is no significant difference in butyrate, isovalerate, valerate and acetate-propionate ratio among treatments receiving different amounts of corn steep liquor. But the concentrations of acetate, propionate and total volatile fatty acids in the rumen were affected by the experimental treatments (P≥0.05). Total protein, urea nitrogen concentration, triglyceride and blood glucose were affected by the experimental treatments, so that the concentration of these parameters increased with the increase in the level of corn steep liquor (P≥0.05). According to the results, it can be recommended to add corn steep liquor to animal rations up to the level of 200 grams per kilogram of dry matter consumed.
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