Soybean meal apparent digestibility for Litopenaeus vannamei, including a critique of methodology
Most trials conducted to examine the apparent digestibility coefficients of nutrients in aningredient or a diet use arbitrary levels of inclusion of the ingredients and indigestible marker. The suitabilityof the levels typically used has not been critically examined, however, and it is not known whe...
| Autores principales: | , , , , |
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| Formato: | Artículo |
| Lenguaje: | inglés |
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Facultad de Ciencias Biologicas
2019
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| Materias: | |
| Acceso en línea: | https://nutricionacuicola.uanl.mx/index.php/acu/article/view/276 |
| _version_ | 1824324544033193984 |
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| author | Divakaran, S. Velasco, Mario Beyer, Eric Forster, Ian G. J. Tacon, Albert |
| author_facet | Divakaran, S. Velasco, Mario Beyer, Eric Forster, Ian G. J. Tacon, Albert |
| author_sort | Divakaran, S. |
| collection | Artículos de Revistas UANL |
| description | Most trials conducted to examine the apparent digestibility coefficients of nutrients in aningredient or a diet use arbitrary levels of inclusion of the ingredients and indigestible marker. The suitabilityof the levels typically used has not been critically examined, however, and it is not known whether inclusionlevels affect the results obtained. This trial was undertaken to ascertain the apparent digestibility coefficientsfor dry matter, crude protein, and gross energy of dehulled, solvent extracted, toasted soybean meal (SBM) bycombining a control diet (containing 23.7% SBM) with SBM at two levels (15 and 30 %; diets contained23.7, 34.9 and 46,3% SBM) and two levels of chromic oxide (0.5 and 1.0 %) in the Pacific white shrimpLitopenaeus vannamei. Four replicate groups of shrimp were fed by hand three times daily and the feces werecollected by siphoning from the tank onto a fine mesh screen. The first fecal strands were discarded to reducethe effects of coprophagy and intake of material other than feed. To minimize leaching of nutrients, freshfecal strands were collected as soon as they were observed. The apparent digestibility coefficients (ADC) fordry matter, crude protein, and gross energy were calculated for the diets and these data were used to derive theapparent digestibility coefficients for the SBM at the two levels of substitution.The dietary inclusion levels of the chromic oxide and SBM acted together to significantly (p<0.05) affect theADCs obtained for SBM. Over all the treatments, the calculated ADC for SBM dry matter varied from 61.2 to84.7%; for crude protein from 89.5 to 102.2%; and, for energy from 78.7 to 100.1%. The ADCs weregenerally higher among the diets that contained chromic oxide at 1.0 % than at 0.5 %, but the magnitude ofthe difference was different for the two levels of SBM substitution. |
| first_indexed | 2025-02-05T19:12:54Z |
| format | Article |
| id | nutrucionacuicola-article-276 |
| institution | UANL |
| language | eng |
| last_indexed | 2025-02-05T19:12:54Z |
| physical | Avances en Nutrición Acuicola; 2000: Memorias del Quinto Simposium Internacional de Nutrición Acuícola |
| publishDate | 2019 |
| publisher | Facultad de Ciencias Biologicas |
| record_format | ojs |
| spelling | nutrucionacuicola-article-2762019-11-13T22:23:42Z Soybean meal apparent digestibility for Litopenaeus vannamei, including a critique of methodology Soybean meal apparent digestibility for Litopenaeus vannamei, including a critique of methodology Divakaran, S. Velasco, Mario Beyer, Eric Forster, Ian G. J. Tacon, Albert Soybean meal shrimp digestibility amino acids chromic oxide Most trials conducted to examine the apparent digestibility coefficients of nutrients in aningredient or a diet use arbitrary levels of inclusion of the ingredients and indigestible marker. The suitabilityof the levels typically used has not been critically examined, however, and it is not known whether inclusionlevels affect the results obtained. This trial was undertaken to ascertain the apparent digestibility coefficientsfor dry matter, crude protein, and gross energy of dehulled, solvent extracted, toasted soybean meal (SBM) bycombining a control diet (containing 23.7% SBM) with SBM at two levels (15 and 30 %; diets contained23.7, 34.9 and 46,3% SBM) and two levels of chromic oxide (0.5 and 1.0 %) in the Pacific white shrimpLitopenaeus vannamei. Four replicate groups of shrimp were fed by hand three times daily and the feces werecollected by siphoning from the tank onto a fine mesh screen. The first fecal strands were discarded to reducethe effects of coprophagy and intake of material other than feed. To minimize leaching of nutrients, freshfecal strands were collected as soon as they were observed. The apparent digestibility coefficients (ADC) fordry matter, crude protein, and gross energy were calculated for the diets and these data were used to derive theapparent digestibility coefficients for the SBM at the two levels of substitution.The dietary inclusion levels of the chromic oxide and SBM acted together to significantly (p<0.05) affect theADCs obtained for SBM. Over all the treatments, the calculated ADC for SBM dry matter varied from 61.2 to84.7%; for crude protein from 89.5 to 102.2%; and, for energy from 78.7 to 100.1%. The ADCs weregenerally higher among the diets that contained chromic oxide at 1.0 % than at 0.5 %, but the magnitude ofthe difference was different for the two levels of SBM substitution. Most trials conducted to examine the apparent digestibility coefficients of nutrients in aningredient or a diet use arbitrary levels of inclusion of the ingredients and indigestible marker. The suitabilityof the levels typically used has not been critically examined, however, and it is not known whether inclusionlevels affect the results obtained. This trial was undertaken to ascertain the apparent digestibility coefficientsfor dry matter, crude protein, and gross energy of dehulled, solvent extracted, toasted soybean meal (SBM) bycombining a control diet (containing 23.7% SBM) with SBM at two levels (15 and 30 %; diets contained23.7, 34.9 and 46,3% SBM) and two levels of chromic oxide (0.5 and 1.0 %) in the Pacific white shrimpLitopenaeus vannamei. Four replicate groups of shrimp were fed by hand three times daily and the feces werecollected by siphoning from the tank onto a fine mesh screen. The first fecal strands were discarded to reducethe effects of coprophagy and intake of material other than feed. To minimize leaching of nutrients, freshfecal strands were collected as soon as they were observed. The apparent digestibility coefficients (ADC) fordry matter, crude protein, and gross energy were calculated for the diets and these data were used to derive theapparent digestibility coefficients for the SBM at the two levels of substitution.The dietary inclusion levels of the chromic oxide and SBM acted together to significantly (p<0.05) affect theADCs obtained for SBM. Over all the treatments, the calculated ADC for SBM dry matter varied from 61.2 to84.7%; for crude protein from 89.5 to 102.2%; and, for energy from 78.7 to 100.1%. The ADCs weregenerally higher among the diets that contained chromic oxide at 1.0 % than at 0.5 %, but the magnitude ofthe difference was different for the two levels of SBM substitution. Facultad de Ciencias Biologicas 2019-11-12 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo revisado por pares application/pdf https://nutricionacuicola.uanl.mx/index.php/acu/article/view/276 Avances en Nutrición Acuicola; 2000: Memorias del Quinto Simposium Internacional de Nutrición Acuícola eng https://nutricionacuicola.uanl.mx/index.php/acu/article/view/276/274 Derechos de autor 2019 S. Divakaran, Mario Velasco, Eric Beyer, Ian Forster, Albert G. J. Tacon |
| spellingShingle | Soybean meal shrimp digestibility amino acids chromic oxide Divakaran, S. Velasco, Mario Beyer, Eric Forster, Ian G. J. Tacon, Albert Soybean meal apparent digestibility for Litopenaeus vannamei, including a critique of methodology |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/article.gif |
| title | Soybean meal apparent digestibility for Litopenaeus vannamei, including a critique of methodology |
| title_alt | Soybean meal apparent digestibility for Litopenaeus vannamei, including a critique of methodology |
| title_full | Soybean meal apparent digestibility for Litopenaeus vannamei, including a critique of methodology |
| title_fullStr | Soybean meal apparent digestibility for Litopenaeus vannamei, including a critique of methodology |
| title_full_unstemmed | Soybean meal apparent digestibility for Litopenaeus vannamei, including a critique of methodology |
| title_short | Soybean meal apparent digestibility for Litopenaeus vannamei, including a critique of methodology |
| title_sort | soybean meal apparent digestibility for litopenaeus vannamei including a critique of methodology |
| topic | Soybean meal shrimp digestibility amino acids chromic oxide |
| topic_facet | Soybean meal shrimp digestibility amino acids chromic oxide |
| url | https://nutricionacuicola.uanl.mx/index.php/acu/article/view/276 |
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