Effects of alfalfa maturity on energy utilization by cattle and nutrient digestibility by cattle and sheep.

Phillip S Miller, W. N. Garrett, N. Hinman

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Two comparative slaughter experiments conducted with growing beef steers (300 kg to 480 kg BW) fed alfalfa cubes demonstrated that animal performance diminished as alfalfa matured. In each trial, ADG (empty BW basis) was 10 to 20% greater from pre-bloom than from early-bloom alfalfa. Net energy for maintenance (Mcal/kg) followed a pattern similar to that of ADG, but NEg (Mcal/kg) did not decrease (P greater than .05) as alfalfa maturity increased. Digestion trials with steers and wethers clearly indicated significant reductions in apparent digestibilities of DM, energy, and cell wall fractions as alfalfa matured. Steers fed at 110% of maintenance in digestion Trails 1, 2, and 3 consistently digested cubed alfalfa to a greater extent than wethers fed the same alfalfa ground and pelleted. Digestion coefficients (percentages) for ADF, cellulose, NDF, and crude fiber were 5 to 14% greater for steers fed cubes than for wethers fed pellets. Regression equations calculated from results of three digestion trials indicate that digestible DM % and DE (Mcal/kg) could be predicted from ADF %, but they were 4 to 5% lower for wethers fed pelleted alfalfa than for steers fed cubes.

Original languageEnglish (US)
Pages (from-to)2591-2600
Number of pages10
JournalJournal of animal science
Volume69
Issue number6
DOIs
StatePublished - Jan 1 1991
Externally publishedYes

Fingerprint

Medicago sativa
alfalfa
Sheep
digestibility
sheep
Food
cattle
energy
nutrients
Digestion
digestion
pelleted feeds
Maintenance
cellulosic fibers
animal performance
digestible energy
crude fiber
Cellulose
beef cattle
Cell Wall

ASJC Scopus subject areas

  • Food Science
  • Animal Science and Zoology
  • Genetics

Cite this

Effects of alfalfa maturity on energy utilization by cattle and nutrient digestibility by cattle and sheep. / Miller, Phillip S; Garrett, W. N.; Hinman, N.

In: Journal of animal science, Vol. 69, No. 6, 01.01.1991, p. 2591-2600.

Research output: Contribution to journalArticle

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