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Research Article

Effects of dietary-reduced nitrogen (N) and phosphorus (P) on N and P balance, retention and nutrient digestibility of contemporary fattening pigs fed ad libitum

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Pages 468-486 | Received 11 Aug 2023, Accepted 21 Nov 2023, Published online: 12 Dec 2023

Figures & data

Table 1. Composition [g/kg, as-fed basis] of the control (CON) and the diet with reduced nitrogen and phosphorus concentrations (NPred) for fattening pigs in a 3-phased feeding regimen.

Table 2. Analysed concentration [g/kg, as-fed basis] of nutrients in a control diet (CON) and a diet with reduced nitrogen and phosphorus concentrations (NPred) for 8 fattening pigs in a 3-phased feeding regimen.

Table 3. Analysed concentration [g/kg, as-fed basis] of amino acids (AA) in a control diet (CON) and a diet with reduced nitrogen and phosphorus concentrations (NPred) for 8 fattening pigs in a 3-phased feeding regimen.

Figure 1. Experimental setup of the balance trial with barrows fed the control diet (CON) and the diet with reduced nitrogen and phosphorus concentrations (NPred) in a 3-phased feeding regimen.

Figure 1. Experimental setup of the balance trial with barrows fed the control diet (CON) and the diet with reduced nitrogen and phosphorus concentrations (NPred) in a 3-phased feeding regimen.

Table 4. Performance of eight fattening pigs in a balance trial fed a control diet (CON) or a diet with reduced concentrations of nitrogen and phosphorus (NPred) in a 3-phased feeding regimen. Data are presented as LSmeans (n = 4/diet).

Table 5. Amount of excretions and mean live weight of barrows during 5-day collection periods for calculation of nutrient balance. Pigs were fed a control diet (CON) or a diet with reduced concentrations of nitrogen and phosphorus (NPred) in a 3-phased feeding regimen (n = 4/diet).

Table 6. Nutrient balance for nitrogen, phosphorus and calcium of barrows fed a control diet (CON) or a diet with reduced concentrations of nitrogen and phosphorus (NPred) in a 3-phased feeding regimen. Data are presented as LSmeans.

Table 7. Apparent precaecal digestibility coefficient (DCpc), apparent post-ileal digestibility (DCpost-ileal) and apparent total tract digestibility coefficient (DCtotal) calculated via marker method of barrows fed a control diet (CON) or a diet with reduced concentrations of nitrogen and phosphorus (NPred) in a 3-phased feeding regimen. Data are presented as LSmeans (n = 4/diet).

Table 8. Apparent precaecal digestibility coefficient (DCpc) [%] of amino acids (AA) of barrows fed a control diet (CON) or a diet with reduced concentrations of nitrogen and phosphorus (NPred) in a 3-phased feeding regimen. Data are presented as LSmeans (n = 4/diet).

Supplemental material

Clean_Supplements_revision_final.docx

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