Description of chemical body components and allometric coeficients in barrows to 273 days in the Colombian High Tropical Region
A range of factors associated with nutrition, genotype, environment and the stage of maturity have an effect on the relationship between nutrient intake, chemical and both chemical and physical body composition at a practical level. These factors constitute the bases to manipulate meat quality and its efficiency of production in a specific scenario. The objective of this research was to describe the composition of a pig genotype and the allometric relationships among the different components taking into account the carcass protein level in the empty body weight, in a specific context of commercial production. We used 39 barrows of the cross breed Duroc-Landrace x Yorkshire, from birth to 273 days of age, who were managed on conventional condition. After 70 days the animals were moved to 2600 msnm (14 ºC). Four barrows were sacrificed at days 1, 21, 63, 99, 126, 154, 175, 210, 239 and 273 of age. Water, protein, lipids and ash were estimated in the canal, red and white entrails using proximal analysis. Animals were feed with a commercial diet whose composition was determined. Six equations were used to estimate allometric relationships between chemical components and protein content. We found that protein, lipids and water content increased linearly and quadratic while ash content increased linearly in both canal and empty body. The proportions of chemical components in the canal and the empty body showed different behavior along the commercial growth cycle. The relationships lipid:protein, water:protein and ash: protein were 2.14, 3.22 and 0.16 respectively. Increased and linearized allometric equations showed the best prediction of the data. They showed allometric coefficients of 0.86 for the relationship water: protein, 1.45 for lipids: protein and 0.81 for ash:protein.
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| Format: | Digital revista |
| Language: | spa |
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Universidad Nacional de Colombia - Sede Bogotá - Facultad de Medicina Veterinaria y de Zootecnia
2007
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| Online Access: | https://revistas.unal.edu.co/index.php/remevez/article/view/10627 |
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