Improving the intake and nutritive value of wheat straw for beef cows

Dan B Faulkner, G. L. Llamas, J. K. Ward, T. J. Klopfenstein

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Two cow trials and two lamb metabolism trials were conducted to evaluate methods of improving wheat straw. In the first cow trial and lamb metabolism trial, the treatments of wheat straw were: (1) none (control); (2) 40 g kg-1 of sodium hydroxide (NaOH); (3) 60 g kg-1 of a liquid supplement (LS); (4) 37.5 g kg-1 of anhydrous ammonia (NH3). In addition to wheat straw eaten ad libitum, all cows were given 7.5 kg of alfalfa-brome-grass hay three times weekly. In the second cow trial, the treatments of wheat straw were: (1) untreated straw plus 7.5 kg of alfalfa-bromegrass hay given three times weekly; (2) straw treated with NH3 (37.5 g kg-1) plus 7.5 kg of alfalfa-bromegrass hay given three times weekly; (3) straw treated with NH3; (4) straw treated with NH3 plus whey (227 g/day). Similar diets were given in the second lamb metabolism trial. The NH3 treatment of wheat straw given with alfalfa hay improved feed intake by an average of 13.8% (P < 0.01) in the two trials and cow gains by 0.3 kg/day (P < 0.05). In addition, NH3-treated straw alone increased gain (P < 0.05) by 0.1 kg when compared to untreated straw and hay in the second trial. However, LS- and NaOH-treated straw used in the first trial did not alter intake or gain. In the two lamb digestion trials, NH3 treatment increased lamb intake (P < 0.05) by an average of 29.2% and apparent dry matter digestibility (DMD; P < 0.05) by an average of 4.4%. No increase in apparent DMD was observed with NaOH or LS treatment of wheat straw. The NH3 treatment increased the apparent digestibility of acid detergent fibre, neutral detergent fibre and hemicellulose.

Original languageEnglish (US)
Pages (from-to)125-132
Number of pages8
JournalAnimal Feed Science and Technology
Volume12
Issue number2
DOIs
StatePublished - 1985
Externally publishedYes

Fingerprint

beef cows
Nutritive Value
wheat straw
Triticum
ammonia
Medicago sativa
nutritive value
Bromus
straw
lambs
cows
hay
alfalfa
Detergents
metabolism
liquids
Sodium Hydroxide
digestibility
anhydrous ammonia
Poaceae

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Food Science
  • veterinary(all)

Cite this

Improving the intake and nutritive value of wheat straw for beef cows. / Faulkner, Dan B; Llamas, G. L.; Ward, J. K.; Klopfenstein, T. J.

In: Animal Feed Science and Technology, Vol. 12, No. 2, 1985, p. 125-132.

Research output: Contribution to journalArticle

Faulkner, Dan B ; Llamas, G. L. ; Ward, J. K. ; Klopfenstein, T. J. / Improving the intake and nutritive value of wheat straw for beef cows. In: Animal Feed Science and Technology. 1985 ; Vol. 12, No. 2. pp. 125-132.
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