Efficiency of fat deposition from different energy sources in pigs using multivariate regression analysis
2010; Taylor & Francis; Volume: 60; Issue: 1 Linguagem: Inglês
10.1080/09064700903567807
ISSN1651-1972
Autores Tópico(s)Pharmacological Effects and Assays
ResumoAbstract Abstract The aim was to estimate the energetic cost of fat deposition from fermentable non-starch polysaccharides (fNSP), starch, and unsaturated fatty acids. A slaughter trial was conducted with a total of 58 individually housed pigs (48–106 kg). The energetic efficiency was monitored at two energy levels; the lysine supply of the pigs was limiting for protein deposition. Control diets were fed either at two or three times of maintenance energy requirement, and the treatments were achieved by isoenergetic addition of the daily nutrient intake (0.2 MJ DE/kg0.75) derived either from fNSP, or digestible starch (dSt), or digestible fat (dFat) above the nutrients from the control diets. Chemical composition of the pigs was determined at 48±4 kg (10 pigs) or 106±3 kg body weight (BW) (48 pigs). In conclusion, under protein limiting conditions, the energetic transformation of fNSP, dSt, and dFat for fat retention (NEfat/DE) was 62%, 80%, and 57%, respectively. The efficiency of fat deposition from a specific energy source was constant, irrespective of the actual feeding level. Keywords: Energy sourcesenergy utilizationfat depositionnet energypig Acknowledgements Veronika Halas received the János Bolyai Research Scholarship from the Hungarian Academy of Science, which is gratefully acknowledged. The authors highly appreciate the remarks of Prof. J. Pettigrew. Notes 1. Hungarian hybrid, produced by KA-HYB Co., Kaposvár, Hungary.
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