Title:	Sward structure management for a maximum short-term intake rate in annual ryegrass.
Authors:	AMARAL, M. F. MEZZALIRA, J. C. BREMM, C. TRINDADE, J. K. GIBB, M. J. SUÑÉ, R. W. CARVALHO, P. C. de F.
Affiliation:	M. F. Amaral; J. C. Mezzalira; C. Bremm; J. K. Da Trindade; M. J. Gibb; RENATA WOLF SUNE MARTINS DA SILVA, CPPSUL; P. C. de F. Carvalho.
Date Issued:	2013
Citation:	Grass and Forage Science, Oxford, v. 68, n. 2, p. 271-277, June 2013.
Description:	This study tested the hypothesis that different sward structures, which were constructed by varying the pre- and post-grazing sward heights of annual ryegrass pasture (Lolium multiflorum Lam.) in southern Brazil, affect the short-term intake rate (STIR) by dairy cows. Treatments consisted of four sward-management strategies defined by a combination of two pre- (25 and 15 cm) and two post-grazing sward heights (10 and 5 cm): 15-05, 15-10, 25-05 and 25-10. A completely randomized block design with four replicates was used for the experimental design. The STIR was determined by the double-weighing technique. Jaw movements were evaluated using automatic recorders (IGER Behaviour Recorder). The results showed that treatment 25-10 allowed the animals to collect more herbage with a greater bite mass and thus resulted in a greater STIR. Treatments in which sward height was reduced to 10 cm generally favoured the ingestion process than treatments with a post-grazing sward height of 5 cm.
Thesagro:	Azevém Vaca leiteira
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPPSUL)