Effect of body condition on consumption of pine needles (Pinus ponderosa) by beef cows

We determined whether cows in low (LBC) or high body condition (HBC) would consume different amounts of green pine needles (Pinus ponderosa). Cows (mature; open Hereford and Hereford x Angus) were fed a maintenance basal diet (alfalfa pellets) for Exp. 1 and 2; during Exp. 3 and 4, cows were fed hig...

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Veröffentlicht in:	Journal of animal science 2008-12, Vol.86 (12), p.3608-3616
Hauptverfasser:	Pfister, J.A, Panter, K.E, Gardner, D.R, Cook, D, Welch, K.D
Format:	Artikel
Sprache:	eng
Schlagworte:	air temperature alfalfa Animal productions Animals antinutritional factors beef cows Biological and medical sciences body condition Body Constitution - physiology body weight Cattle - metabolism Cattle - physiology climatic factors conifer needles cow feeding Diet - veterinary Dietary Proteins - metabolism Eating - physiology feed intake Female food animals Fundamental and applied biological sciences. Psychology grazing high energy diet high protein diet Pinus ponderosa Pinus ponderosa - metabolism Plant Leaves - metabolism protein energy ratio Random Allocation Seasons Snow Temperature temporal variation terpenoids Terrestrial animal productions Time Factors Vertebrates
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Zusammenfassung:	We determined whether cows in low (LBC) or high body condition (HBC) would consume different amounts of green pine needles (Pinus ponderosa). Cows (mature; open Hereford and Hereford x Angus) were fed a maintenance basal diet (alfalfa pellets) for Exp. 1 and 2; during Exp. 3 and 4, cows were fed high-protein and high-energy diets, respectively. Experiment 5 was a grazing study on rangeland during winter in South Dakota; diets were determined by using bite counts. Mean BCS (1 = emaciated, 9 = obese) was 7.5 for HBC cows and
ISSN:	0021-8812 1525-3163
DOI:	10.2527/jas.2008-1000