Manure production and mineral excretion in feces of gilts fed ractopamine - doi: 10.4025/actascianimsci.v35i3.18662
| Autor: | Watanabe, Pedro Henrique, Thomaz, Maria Cristina, Pascoal, Leonardo Augusto Fonseca, Ruiz, Urbano dos Santos, Daniel, Everton, Amorim, Alessandro Borges |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Acta Scientiarum: Animal Sciences, Vol 35, Iss 3, Pp 267-272 (2013) Acta Scientiarum. Animal Sciences; Vol 35 No 3 (2013); 267-272 Acta Scientiarum. Animal Sciences; v. 35 n. 3 (2013); 267-272 Acta Scientiarum. Animal Sciences Universidade Estadual de Maringá (UEM) instacron:UEM |
| ISSN: | 1807-8672 1806-2636 |
| Popis: | A study was conducted to evaluate the feces+urine produced per animal (FUPA), dry matter, mineral matter, organic matter, nitrogen, phosphorus, potassium and sulfur in feces of gilts fed diets with increasing levels of ractopamine (0, 5, 10 and 15 mg kg-1 of diet). A total of 468 finishing gilts were allotted into 36 pens. In two days of each week, feces and urine were daily sampled in four pens per treatment, quantifying the feces+urine. To determine the characterization of feces, two samples per week were taken daily, in nine pens per treatment. It was used a split plot design, considering the ractopamine level as the plot and the weeks as the subplots. There was no reduction in nitrogen amount in feces. An interaction was detected between ractopamine concentrations and weeks for FUPA and phosphorus, potassium and sulfur in feces. Ractopamine addition in diets for gilts has reduced the feces+urine production and nitrogen and phosphorus excretion. Higher values estimated for potassium content in feces of animals fed diets with 10 and 15 mg of ractopamine kg-1 were found between the second and third week. Increasing levels of ractopamine from 5 to 15 mg kg-1 promoted higher excretion of sulfur over the weeks of supply. A study was conducted to evaluate the feces+urine produced per animal (FUPA), drymatter, mineral matter, organic matter, nitrogen, phosphorus, potassium and sulfur in feces of gilts feddiets with increasing levels of ractopamine (0, 5, 10 and 15 mg kg-1 of diet). A total of 468 finishing giltswere allotted into 36 pens. In two days of each week, feces and urine were daily sampled in four pens pertreatment, quantifying the feces+urine. To determine the characterization of feces, two samples per weekwere taken daily, in nine pens per treatment. It was used a split plot design, considering the ractopaminelevel as the plot and the weeks as the subplots. There was no reduction in nitrogen amount in feces. Aninteraction was detected between ractopamine concentrations and weeks for FUPA and phosphorus,potassium and sulfur in feces. Ractopamine addition in diets for gilts has reduced the feces+urineproduction and nitrogen and phosphorus excretion. Higher values estimated for potassium content in fecesof animals fed diets with 10 and 15 mg of ractopamine kg-1 were found between the second and third week.Increasing levels of ractopamine from 5 to 15 mg kg-1 promoted higher excretion of sulfur over the weeksof supply. |
| Databáze: | OpenAIRE |
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