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Journal Article

Journal Article

Forage intake and ingestive behavior of cattle grazing old world bluestems.  [1993]

Forbes T.D.A.; Coleman S.W.; Sveriges Lantbruksuniv., Uppsala (Sweden). [Corporate Author]

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Many native and introduced warm-season grasses are being seeded as a consequence of crop reduction programs; however, little is known about the intake and ingestive behavior of cattle (Bos taurus L.) grazing such grasses. The influence of differences in herbage mass, sward height, and morphological composition of old world bluestem (Both- riochloa spp.) pastures on herbage intake and ingestive behavior of steers were examined over the course of two grazing seasons at El Reno, OK. Soils were fine-silty Pachic Hapiustolls of the Dale series. Swards of Caucasian' [B. caucasica (Trin.) C.E, Hubb.] and 'Plains' [B. ischaemum (Hack) Celarier and Harian var. ischaemum (L.) Keng.] old world bluestem were maintained within the range of 0.5 to 5 Mg ha-1 by continuous variable stocking. Five grazing trials were conducted using a total of 20 swards over the 2 yr. In both years, pasture were grazed from mid-May to late September by steers with an initial weight of 250 kg. Results showed that changes in sward height had little influence on organic matter intake or ingestive behavior, but changes in herbage mass, green man, total green leaf proportion, and leaf proportion had more effect. Diet digestibility was most influenced by the proportion of green leaf in the sward. Organic matter intake increased with increasing green leaf mass to 1.07 Mg ha-1 and then decreased. Intake per bite and grazing also increased as proportion of green leaf and herbage mass increased, res
pectively. These two measures of ingestive behavior were highly influential on intake. Management of old world bluestems should aim to maintain swards with a high proportion of green leaf.
From the journal
Agronomy journal
ISSN : 0002-1962

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2012
Volume:
85
Extent:
v.808-816(4)
All titles:
"Forage intake and ingestive behavior of cattle grazing old world bluestems."@eng
Other:
"references. AVAILABILITY: US (DNAL 4 AM34P)."
"Agronomy-journal (USA). (Jul-Aug 1993). v. 85(4) p. 808-816. "
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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2012
Volume:
85
Extent:
v.808-816(4)
All titles:
"Forage intake and ingestive behavior of cattle grazing old world bluestems."@eng
Other:
"references. AVAILABILITY: US (DNAL 4 AM34P)."
"Agronomy-journal (USA). (Jul-Aug 1993). v. 85(4) p. 808-816. "