Title:	Evaluation of high-concentrate diets that vary in physically effective neutral detergent fibre for finishing lambs.
Authors:	COSTA, H. H. A. ROGERIO, M. C. P. POMPEU, R. C. F. F. LÔBO, R. N. B. LIMA, A. R. COSTA, C. S. PEREIRA, E. S. GUEDES, F. L. MUIR, J. P.
Affiliation:	UNIVERSIDADE ESTADUAL VALE DO ACARAÚ; MARCOS CLAUDIO PINHEIRO ROGERIO, CNPC; ROBERTO CLAUDIO FERNANDES F POMPEU, CNPC; RAIMUNDO NONATO BRAGA LÔBO, CNPC; FEDERAL UNIVERSITY OF CEARÁ; FEDERAL UNIVERSITY OF CEARÁ; FERNANDO LISBOA GUEDES, CNPC; TEXAS A&M AGRILIFE RESEARCH.
Date Issued:	2021
Citation:	South African Journal of Animal Science, v. 51, n. 3, 2021.
Description:	Abstract: The objective of this research was to evaluate lamb diets with a high proportion of concentrate and various levels of physically effective neutral detergent fibre (NDF) using tropical ingredients. Four diets were formulated: D1 with 16.5% physically effective NDF (peNDF), D2 with 21.4% peNDF, D3 with 23.3% peNDF, and D4 with 24.6% peNDF. Twenty male Santa Inês lambs at four months old with an average liveweight (LW) of 18.6 ± 3.4 kg were fed for 49 days. There were no differences (P >0.05) among the diets in dry matter (DM) intake. Crude protein (CP) intake, relative to either LW or metabolic live weight (LW0.75) or LW, was greater (P ≤0.05) for D2 and D3 than for D1 or D4. Lower (P ≤0.05) NDF intake, relative to LW0.75 or LW, was lower for D1 than for the other diets. Selection indexes (SIs) were similar (P >0.05) among diets. Animals that consumed D1 had less (P ≤0.05) rumination time per bolus. Meaningful variations were not observed in performance and efficiency of finishing lambs that were related to differences in peNDF among the diets. Santa Inês lambs were able to adapt to diets with low levels of peNDF by increasing rumination time as a consequence of increased fibre consumption and greater particle size selection.
Thesagro:	Ovino Cordeiro Nutrição Animal
NAL Thesaurus:	Sheep feeding Ruminant nutrition Industrial byproducts Lambs Brazil Nutrient use efficiency
Keywords:	Agro-industrial by-products Average particle size Rumen bypass protein Tropical feedstuffs Raça Santa Inês
DOI:	10.4314/sajas.v51i3.5
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPC)