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Methane emissions from cattle.
TLDR
Knowing the factors that impact methane production can result in the development of mitigation strategies to reduce methane losses by cattle and implementation of these strategies should result in enhanced animal productivity and decreased contributions by cattle to the atmospheric methane budget. Expand
Physical and chemical components of the empty body during compensatory growth in beef steers.
TLDR
Reduced NEg requirements and changes in gut fill accounted for most of the compensatory growth response exhibited in these steers, and net energy requirements for growth were approximately 18% lower for CG steers. Expand
Effect of frequency of supplementation and protein concentration in supplements on performance and digestion characteristics of beef cattle consuming low-quality forages.
TLDR
Daily supplementation maximized forage intake and cow performance, although the magnitude of performance differences was not large, and response to supplementation frequency was not dependent on supplement CP concentration or grain type. Expand
Changes in liver and gastrointestinal tract energy demands in response to physiological workload in ruminants.
TLDR
Liver and gastrointestinal tract weights appear to increase or decrease in direct proportion to dietary intake within and across physiological stages of maintenance, growth, fattening or lactation, and increases in energy use by these tissues appear to account for up to 70% of the heat increment of ME use above maintenance. Expand
Small intestinal starch digestion in steers: effect of various levels of abomasal glucose, corn starch and corn dextrin infusion on small intestinal disappearance and net glucose absorption.
TLDR
Eight Holstein steers fitted with an elevated carotid artery, hepatic portal and mesenteric venous catheters, and abomasal and ileal cannulas were used in several 4 x 4 Latin square experiments to evaluate small intestinal starch digestion, concluding that only about 35% of the raw corn starch disappearing in the steer's small intestine resulted in net portal glucose absorption. Expand
Endocrine and metabolic changes during altered growth rates in beef cattle.
TLDR
Blood urea nitrogen decreased during early realimentation despite a large increase in diet protein intake and in protein storage, suggesting an increased efficiency of nitrogen use for protein synthesis. Expand
Ionic milieu of bovine and ovine rumen as affected by diet.
TLDR
Diets which produce hypertonic rumen fluid due to high mineral and/or concentrations of volatile fatty acids may reduce fermentation in rumen, and postprandial changes in osmotic pressure were primarily due to changes in concentrations ofatile fatty acids. Expand
The effects of several supplementation frequencies on forage use and the performance of beef cattle consuming dormant tallgrass prairie forage.
TLDR
Forage use was improved with an increased frequency of supplementation, but the impact on performance is not likely to be large unless extreme differences in frequency occur. Expand
Variation among twin beef cattle in maintenance energy requirements.
TLDR
The genetic variation in energy expenditures of cattle at fasting (FHP) and maintenance (MEm) was determined by using 12 pairs of monozygous twins at 20 mo of age, and the FHP and efficiency of ME use for MEm (Km) were similar between sexes, although heifers had lower MEm than steers. Expand
Effects of neutering on bodyweight, metabolic rate and glucose tolerance of domestic cats.
TLDR
Gonadectomy had minimal effects on serum thyroid hormone concentrations, the resting or fasting metabolic rates in males, or on indices of glucose tolerance in females. Expand
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