Nutrient absorption in lambs fed diets containing different amounts of phosphorus
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| Format: | Artículo científico |
| Language: | en |
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Universidad de Córdoba
2013
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| _version_ | 1876474233183272960 |
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| author | René Patiño P |
| author_facet | René Patiño P |
| contents | Nutrient absorption in lambs fed diets containing different amounts of phosphorus René Patiño P Tanimara Soares da Silva José C. da Silva Filho Mohamed Emad Nasser Dorinha Smith Vitti José A. Moreira Veterinaria calcium Absorption phosphorus radioisotopes ruminants (Source: DeCS) Objective. Evaluate the effect of increasing P intake on nutrient digestibility, and compare the true and apparent absorption coefficients of P and Ca in lambs. Materials and methods. Twenty-four Santa Ines sheep, with an average weight of 33.6 ± 1.6 kg, were distributed into four treatments (0, 2, 4 and 6 g/day of supplementary P) with forage: concentrate ratio of 70:30. The study of apparent nutrient digestibility was conducted during the first week, using the total feces collection method. During the second week, after injection of 7.4 MBq of 32P and 7.7 MBq of 45Ca, apparent (AAC) and true (TAC) absorption coefficients of P and Ca were determined. The lambs were kept in metabolic cages. Results. The increase in P intake did not affect (p>0.05) dry matter, crude protein, NDF or ADF digestibility, but the TAC of P and Ca and mineral matter digestibility decreased. The AAC was not affected (p=0.10). A cubic relationship was observed between P intake and TAC (TAC=2.16–1.95X+0.55X 2-0.04X 3; R 2=0.38) and linear relationship with the TAC of Ca (TAC=0.559–0.03X; R 2=0.26). TAC and AAC values were different (p<0.001). Conclusions. The increase in P intake doesn’t impact organic matter digestibility, but does affect P and Ca absorption. Apparent digestibility is not a reliable parameter to determine the efficiency of P and Ca absorption. 2013 artículo científico 0122-0268 https://www.redalyc.org/articulo.oa?id=69328078003 en http://www.redalyc.org/revista.oa?id=693 Revista MVZ Córdoba application/pdf Universidad de Córdoba Revista MVZ Córdoba (Colombia) Num.2 Vol.18 |
| format | Artículo científico |
| id | redalyc_69328078003 |
| institution | Redalyc |
| language | en |
| publishDate | 2013 |
| publisher | Universidad de Córdoba |
| spellingShingle | Nutrient absorption in lambs fed diets containing different amounts of phosphorus René Patiño P Veterinaria calcium Absorption phosphorus radioisotopes ruminants (Source: DeCS) Nutrient absorption in lambs fed diets containing different amounts of phosphorus René Patiño P Tanimara Soares da Silva José C. da Silva Filho Mohamed Emad Nasser Dorinha Smith Vitti José A. Moreira Veterinaria calcium Absorption phosphorus radioisotopes ruminants (Source: DeCS) Objective. Evaluate the effect of increasing P intake on nutrient digestibility, and compare the true and apparent absorption coefficients of P and Ca in lambs. Materials and methods. Twenty-four Santa Ines sheep, with an average weight of 33.6 ± 1.6 kg, were distributed into four treatments (0, 2, 4 and 6 g/day of supplementary P) with forage: concentrate ratio of 70:30. The study of apparent nutrient digestibility was conducted during the first week, using the total feces collection method. During the second week, after injection of 7.4 MBq of 32P and 7.7 MBq of 45Ca, apparent (AAC) and true (TAC) absorption coefficients of P and Ca were determined. The lambs were kept in metabolic cages. Results. The increase in P intake did not affect (p>0.05) dry matter, crude protein, NDF or ADF digestibility, but the TAC of P and Ca and mineral matter digestibility decreased. The AAC was not affected (p=0.10). A cubic relationship was observed between P intake and TAC (TAC=2.16–1.95X+0.55X 2-0.04X 3; R 2=0.38) and linear relationship with the TAC of Ca (TAC=0.559–0.03X; R 2=0.26). TAC and AAC values were different (p<0.001). Conclusions. The increase in P intake doesn’t impact organic matter digestibility, but does affect P and Ca absorption. Apparent digestibility is not a reliable parameter to determine the efficiency of P and Ca absorption. 2013 artículo científico 0122-0268 https://www.redalyc.org/articulo.oa?id=69328078003 en http://www.redalyc.org/revista.oa?id=693 Revista MVZ Córdoba application/pdf Universidad de Córdoba Revista MVZ Córdoba (Colombia) Num.2 Vol.18 |
| title | Nutrient absorption in lambs fed diets containing different amounts of phosphorus |
| topic | Veterinaria calcium Absorption phosphorus radioisotopes ruminants (Source: DeCS) |
| url | https://www.redalyc.org/articulo.oa?id=69328078003 |