Translator Disclaimer
4 August 2016 Feeding diets with reduced net energy levels to growing–finishing barrows and gilts
M.N. Smit, J.L. Landero, M.G. Young, E. Beltranena
Author Affiliations +
Abstract

We evaluated feeding reduced net energy (NE) levels to growing–finishing pigs. In a 2 × 4 factorial, 1008 pigs (29 kg) housed in 48 pens of 21 barrows or gilts were fed 2.4, 2.3, 2.2, or 2.1 Mcal NE kg-1 diets over five growth phases resulting in six pens per NE level × gender. For the entire trial, reducing NE by 0.1 Mcal kg-1 linearly increased (P < 0.001) average daily feed intake by 43 g and linearly decreased (P < 0.001) caloric intake by 0.12 Mcal d-1 and feed efficiency (G:F) by 0.007 Mcal kg-1; average daily weight gain was not affected. The proportion of pigs remaining in pens after the start of shipping for slaughter (day 78) was greatest (P < 0.05) for pigs fed 2.1 Mcal NE kg-1, but days to target slaughter weight (124 kg) did not differ. Carcass backfat, loin depth, lean yield, index, and carcass lean gain were not affected by NE. Reduced NE diets (≤2.3 Mcal NE kg-1) can therefore be fed to growing–finishing pigs instead of traditional energy levels (≥2.4 Mcal NE kg-1) as long as pigs can increase feed intake to compensate for reduced NE density.

Copyright remains with the author(s) or their institution(s). Permission for reuse (free in most cases) can be obtained from RightsLink.
M.N. Smit, J.L. Landero, M.G. Young, and E. Beltranena "Feeding diets with reduced net energy levels to growing–finishing barrows and gilts," Canadian Journal of Animal Science 97(1), 30-41, (4 August 2016). https://doi.org/10.1139/cjas-2016-0045
Received: 10 March 2016; Accepted: 1 July 2016; Published: 4 August 2016
JOURNAL ARTICLE
12 PAGES


SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top