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Articles 1 - 4 of 4
Full-Text Articles in Life Sciences
Effects Of Cryptosporidiosis On Feed Utilization By Yearling Steers, L. A. Goss, J. U. Thomson, R. H. Pritchard
Effects Of Cryptosporidiosis On Feed Utilization By Yearling Steers, L. A. Goss, J. U. Thomson, R. H. Pritchard
South Dakota Beef Report, 1991
Four 18-month-old Angus steers were used to study the effects of chronic cryptosporidiosis on feed utilization. Two of the steers tested positive for shedding Cryptosporidium and two noninfected steers were used as controls. The steers were offered a high concentrate diet. Digestibilities of dry matter (85.66 vs 80.33 ± 3.49%), crude protein (80.12 vs 73.47 ± 5.18%), ADF (72.88 vs 70.92 ± 2.32%) and NDF (86.28 vs 84.40 ± 1.99%) were similar for control and Cryptosporidium infected steers, respectively. The mean abomasal chyme pH was 4.72 ± .016. Abomasal weight was 3.72 Ib for the control steers and 6.50 Ib …
Methionine Addition To A Urea-Grain Supplement For Cows Grazing Dormant Winter Range, P. A. Momont, R. J. Pruitt, P. S. Johnson
Methionine Addition To A Urea-Grain Supplement For Cows Grazing Dormant Winter Range, P. A. Momont, R. J. Pruitt, P. S. Johnson
South Dakota Beef Report, 1991
A 2-year grazing study involving 103 mature pregnant Simmental x Angus cows grazing dormant winter range was conducted to determine the effects of methionine addition to a urea-grain supplement on forage intake and digestibility and on cow performance. Four protein supplements designed to supply .8 1b crude protein per head daily were fed from mid-November to mid-February. Supplements contained (1) urea (CON), (2) urea plus methionine (MET), (3) urea plus sodium sulfate (SUL) and (4) soybean meal (SBM). Twice during the second winter (late November and late January), cows were administered controlled release chromic oxide boluses and fecal samples were …
In Vitro Digestibility Of Untreated And Ammonia Treated Oat Mill By-Product, C. P. Birkelo, B. Borkowski, S. Shuey
In Vitro Digestibility Of Untreated And Ammonia Treated Oat Mill By-Product, C. P. Birkelo, B. Borkowski, S. Shuey
South Dakota Beef Report, 1991
Oat mill by-product (OMB, approximately 80% oat hulls) was treated with 0, 1%, 3%, or 5% NH3 and 10%, 20%, 30%, 40%, or 50% H2O (4 x 5 factorial design) and allowed to react for 28 days. Samples were analyzed for in vitro dry matter digestibility (IVDMD), crude protein (CP) and fiber content (NDF, ADF, ADL). Treatment with 3% NH3 and 20% H20 resulted in maximum improvement of IVDMD. CP was increased and NDF decreased due to treatment. Nutritional value of OMB can be improved by NH3 treatment.
Relationship Between Microstructure And In Vitro Digestibility Of Starch In Precooked Leguminous Seed Flours, Juscelino Tovar, Alicia De Francisco, Inger Bjorck, Nils-Georg Asp
Relationship Between Microstructure And In Vitro Digestibility Of Starch In Precooked Leguminous Seed Flours, Juscelino Tovar, Alicia De Francisco, Inger Bjorck, Nils-Georg Asp
Food Structure
Precooked flours (PCFs) were prepared by milling boiled and freeze-dried red kidney beans, white beans and lentils. As demonstrated by scanning electron microscopy, PCFs were rich in relatively large particles which contained cell structures filled with starch. In contrast, flours from raw seeds contained a large number of free starch granules. The in vitro a-amylolysis rate ofPCFs was remarkably low, but increased after physical and chemical treatments of the flours. Homogenization resulted in the largest increase of hydrolysis rate. The susceptibility to enzymatic hydrolysis was also enhanced when PCFs were preincubated with pepsin or submitted to additional boiling. These treatments …