2008
DOI: 10.1590/s1516-35982008001100013
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Níveis de triptofano digestível em rações para suínos machos castrados de alto potencial genético na fase dos 97 aos 125 kg

Abstract: RESUMO -Foram utilizados 80 suínos machos castrados, híbridos comerciais de alto potencial genético para deposição de carne na carcaça, para avaliar o efeito dos níveis de triptofano digestível para suínos dos 97,0 ± 2,81 aos 125,0 ± 3,31 kg.O delineamento experimental foi de blocos ao acaso com cinco tratamentos (0,124; 0,133; 0,142; 0,151 e 0,160% de triptofano digestível, correspondentes às relações de 16,5; 17,7; 18,9; 20,1 e 21,3% com a lisina digestível, cada um com oito repetições de dois animais. As ra… Show more

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Cited by 7 publications
(4 citation statements)
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“…Salyer et al (2013) reported that BF increased and fat-free lean index decreased in finishing barrows and gilts receiving SID Trp in their diets. On the other hand, Pereira et al (2008) did not observe an effect of SID Trp (1.24-1.60 g/kg) on the BF and lean meat yield of finishing pigs (90-125 kg). Guzik et al (2005) reported an increase in the BF of pigs (74-104 kg) as the level of SID Trp was increased (0.6-1.4 g/kg) in the diets.…”
Section: Performance Longissimus Muscle and Backfat Thicknesscontrasting
confidence: 58%
See 1 more Smart Citation
“…Salyer et al (2013) reported that BF increased and fat-free lean index decreased in finishing barrows and gilts receiving SID Trp in their diets. On the other hand, Pereira et al (2008) did not observe an effect of SID Trp (1.24-1.60 g/kg) on the BF and lean meat yield of finishing pigs (90-125 kg). Guzik et al (2005) reported an increase in the BF of pigs (74-104 kg) as the level of SID Trp was increased (0.6-1.4 g/kg) in the diets.…”
Section: Performance Longissimus Muscle and Backfat Thicknesscontrasting
confidence: 58%
“…On the other hand, Pereira et al . (2008) did not observe an effect of SID Trp (1.24–1.60 g/kg) on the BF and lean meat yield of finishing pigs (90–125 kg). Guzik et al .…”
Section: Discussionmentioning
confidence: 85%
“…However, similarly to the results of daily protein deposition observed in this study, Haese et al (2006) and Pereira et al (2008) evaluated the effects of digestible tryptophan levels on growth performance and carcass traits of pigs from 60 to 95 kg and from 97 to 125 kg, respectively, and found no effect of tryptophan levels in the yield of lean meat of pigs. Consistent with these results, Henry (1995) worked with pigs from 55 to 88 kg and also found no effect of increasing dietary tryptophan levels in protein deposition of pigs slaughtered at the same body weight.…”
Section: Resultssupporting
confidence: 63%
“…On the other hand, Eder et al (2006) and Pereira et al (2008) found no increase in the daily feed intake of barrows by increasing the levels of digestible tryptophan in the diet. The linear increase in the daily feed intake of pigs observed in this study may be related to the increase in the ratio between digestible tryptophan and neutral long chain amino acids (NLCAA), phenylalanine, tyrosine, leucine, valine and isoleucine in the diets as a result of digestible tryptophan supplementation.…”
Section: Resultsmentioning
confidence: 95%