Back to Search
Start Over
Effects of nutrition on digestion efficiency and gaseous emissions from slurry in growing pigs: III. Influence of varying the dietary level of calcium soap of palm fatty acids distillate with or without orange pulp supplementation.
- Source :
-
Animal Feed Science & Technology . Nov2015, Vol. 209, p128-136. 9p. - Publication Year :
- 2015
-
Abstract
- The aim of this study was to establish the relationships between faecal fat concentration and gaseous emissions from pig slurry. Five diets were designed to meet essential nutrient requirements: a control and four experimental feeds including two levels (35 or 70 g/kg) of calcium soap fatty acids distillate (CSP) and 0 or 200 g/kg of orange pulp (OP) combined in a 2 × 2 factorial structure. Thirty growing pigs (six per treatment) were used to measure dry matter (DM) and N balance, coefficients of total tract apparent digestibility (CTTAD) of nutrients, faecal and urine composition and potential emissions of ammonia (NH 3 ) and methane (CH 4 ). Increasing dietary CSP level decreased DM, ether extract (EE) and crude protein (CP) CTTAD (by 4.0, 11.1 and 3.5%, respectively, P < 0.05), but did not influence those of fibrous constituents. It also led to a decrease (from 475 to 412 g/kg DM, P < 0.001) of faecal concentration of neutral detergent fibre (aNDFom) and to an increment (from 138 to 204 g/kg, P < 0.001) of EE in faecal DM that was related to greater CH 4 emissions, both per gram of organic matter ( P = 0.021) or on a daily basis ( P < 0.001). Level of CSP did not affect N content in faeces or urine, but increased daily DM ( P < 0.001), and N ( P = 0.031) faecal excretion with no effect on urine N excretion. This resulted in lesser ( P = 0.036) NH 3 potential emission per kg of slurry. Addition of OP decreased CTTAD of EE (by 7.9%, P = 0.044), but increased ( P < 0.05) that of all the fibrous fractions. As a consequence, faecal EE content increased (from 165 to 177 g/kg DM; P = 0.012), and aNDFom decreased greatly (from 483 to 404 g/kg DM, P < 0.001), which in all resulted in a lack of effect of OP on CH 4 potential emission. Inclusion of OP in the diet also led to a significant decrease of CP CTTAD (by 6.85%, P < 0.001), and to an increase of faecal CP concentration (from 174 to 226 g/kg DM, P < 0.001), with no significant influence on urine N content. These effects resulted in higher N faecal losses, especially those of the undigested dietary origin, without significant effects on potential NH 3 emission. No significant interactions between CSP and OP supplementation were observed for the gaseous emissions measured. [ABSTRACT FROM AUTHOR]
- Subjects :
- *DIGESTION
*NUTRITION
*SWINE
*DIET
*FATTY acids
Subjects
Details
- Language :
- English
- ISSN :
- 03778401
- Volume :
- 209
- Database :
- Academic Search Index
- Journal :
- Animal Feed Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 110099981
- Full Text :
- https://doi.org/10.1016/j.anifeedsci.2015.07.022