Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Life Sciences
Energetic Response Of Angus And Simmental Crossbred Cows To Low And Moderate Intakes, C. P. Birkelo, B. M. Freking, D. M. Marshall
Energetic Response Of Angus And Simmental Crossbred Cows To Low And Moderate Intakes, C. P. Birkelo, B. M. Freking, D. M. Marshall
South Dakota Beef Report, 1995
Mature Angus-Hereford (AH; n = 15) and Simmental-Hereford (SH; n = 16) cows were used to evaluate the effects of adaptation to moderate (adequate to at least maintain body condition) and low (76% of moderate) intakes on feed energy partitioning by cows of different genotypes. Cows were fed individually in drylot for one complete production cycle (1 2 months). Conventional energy balance techniques and respiration calorimetry were used once during gestation and twice during lactation to evaluate energy utilization. Condition scores differed by .7 units (5.0 vs 4.3; P< .001) between intake levels by the end of the study. Heat production at 195 days of gestation was affected by intake level (P< .001) but not by genotype (P> .20), and there was no interaction between the main effects (Gxl …