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Effect Of Inoculants On High Moisture Corn Fermentation Characteristics And Cattle Performance, C. P. Birkelo, D. Sorenson
Effect Of Inoculants On High Moisture Corn Fermentation Characteristics And Cattle Performance, C. P. Birkelo, D. Sorenson
South Dakota Beef Report, 1991
High moisture corn was ensiled untreated (treatment 1) or treated with one of three different inoculants (treatment 2 = lactobacillus; treatment 3 = lactobacillus + streptococcus; treatment4 = lactobacillus + serratia), each at two moisture levels (27.2% and 22.4%). lnoculant effects on fermentation were moisture dependent. The pH, acetate concentrations and dry matter losses were generally lower and lactate concentrations higher due to inoculation at 27.2% moisture. Overall, treatment 3 was somewhat more effective than treatments 2 or 4. Inoculation effects were generally less at 22.4% moisture. lnoculant effects on soluble N were small and probably of little nutritional importance. …
Substitution Of Rolled Barley For Whole Shelled Corn In Finishing Diets For Steers, R. H. Pritchard, M. A. Robbins
Substitution Of Rolled Barley For Whole Shelled Corn In Finishing Diets For Steers, R. H. Pritchard, M. A. Robbins
South Dakota Beef Report, 1991
Rolled barley was substituted for 0, 25, 50, 75 or 100% of the whole shelled corn in finishing diets fed to steers for 84 days. Increasing barley substitution resulted in a linear (P=.12) decrease in ADG and a quadratic (P<.05) decrease in DM1 with no effect on feed conversion. At the termination of the study, barley substitution caused a linear reduction in carcass weight (P<.01) and dressing percent (P<.01). The 100% substitution of barley for corn reduced (Pc.05) the percentage of carcasses grading choice. Dietary net energy values calculated from steer weights, gain and feed intake increased linearly (P<.10) as barley content of the diets increased, possibly reflecting positive associative effects. Published energy values for barley may not be suitable for least cost pricing in all feeding situations.
Relationship Of Maintenance Energy Requirements To Beef Female Production Efficiency, S. A. Shuey, C. P. Birkelo, D. M. Marshall
Relationship Of Maintenance Energy Requirements To Beef Female Production Efficiency, S. A. Shuey, C. P. Birkelo, D. M. Marshall
South Dakota Beef Report, 1991
Thirty-three Hereford x Angus first-calf females were used to determine the relationship between production efficiency (PE = calf weaning weight/l2month dam + calf ME intake) and nonlactating dam maintenance ME requirements (MEm) and its components k, and FHP. Substantial variation existed in PE and energy parameters among individuals. However, maintenance metabolism of the dam contributed little to explaining PE variation (Fs.04). This may have been due to the high plane of nutrition provided. Additionally, FHP was closely related to MEm (r2 = .69), suggesting it could be used as an indicator of fed maintenance requirements.