Digestibilidade ileal e perdas endógenas de aminoácidos de dietas com óleo de soja para suínos em crescimento

Almeida, Erin Caperuto de; Fialho, Elias Tadeu; Cantarelli, Vinícius de Souza; Zangerônimo, Márcio Gilberto; Pereira, R.A.N.; Rodrigues, Paulo Borges

doi:10.1590/s1516-35982007000500009

Cited by 5 publications

(6 citation statements)

References 8 publications

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“…In relation to the average daily weight gain, the ambient temperature reduced its value (P<0.05) only in animals that received the lowest levels of crude protein and oil in the diets and also in those which received the greatest level of oil, regardless of the level of crude protein in the diet. This result may be related to the lower caloric increment generated for diets with low nutrient content (low protein or oil) and the input of oil in the digestibility of the proteins, in which, according to Almeida et al (2007), there is a positive correlation between these nutrients. In this case, it is the higher heat release brought about by this increase in digestibility for having influenced weight gain in animals maintained in a hot environment.…”

Section: Resultsmentioning

confidence: 99%

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Reduction in the protein level and addition of oil in diets for finishing pugs under different temperatures

Rodrigues

Filho²,

Zangerônimo³

et al. 2012

R. Bras. Zootec.

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-The objective of this study was to evaluate the effect of reducing the crude protein (CP) with the use of amino acids in diets with the same amount of calories anddifferent levels of soybean oil (SO) for finishing pigs kept in two different ambient temperatures. A total of 120 barrows (initial weight of 68.0±1.9 kg) were utilized for the experiment. The design was of randomized blocks in a 2 × 3 × 2 factorial arrangement (two levels of CP, 16.2 and 13.7%; three levels of SO, 1.5; 3.0 and 4.5%; and two ambient temperatures, 19 and 31 °C), totaling twelve treatments with five replicates for thirty days. The heat reduced feed intake (FI) of the animals, regardless of the levels of CP and SO used, and reduced weight gain (WG) in diets with reduced CP and SO or higher SO. The increased level of CP and SO improved feed conversion (FC) when the animals were kept in thermoneutral environment and given a diet with higher protein content. The reduction in CP increased FI only in the thermoneutral environment. In the heat, WG increased in diets with higher levels of SO, without influencing FC. The manipulation of diet and temperature did not affect most carcass traits. The SO reduced backfat thickness (BT) only in diets with high CP and animals kept in thermoneutral environment. The reduction of CP increased the BT only in diets with high content of SO, both in hot and thermoneutral environments. Heat reduces FI and the inclusion of SO does not improve performance or carcass characteristics in these conditions. The reduction in CP improves WG only in diets with high oil content; however, it increases BT. In thermoneutral environment, increasing the SO is beneficial for performance and carcass characteristics, except when diets with reduced CP are used. The reduction in CP improves performance only in diets with low oil content.

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Section: Resultsmentioning

confidence: 99%

“…According to Almeida et al (2007), the inclusion of oil in the diet increases the availability of amino acids from the crude protein diets. In the case of low crude protein diets, as in this experiment, this effect is not reflected in the weight gain increase.…”

Section: Resultsmentioning

confidence: 99%

Reduction in the protein level and addition of oil in diets for finishing pugs under different temperatures

Rodrigues

Filho²,

Zangerônimo³

et al. 2012

R. Bras. Zootec.

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“…Todavia, quando os suínos são submetidos a ambientes de alta temperatura, tendem a reduzir o consumo e perder a eficiência de utilização da energia disponível, à medida que acionam mecanismos de termoregulação para manter a homeostase térmica (KERR et al, 2003). Nas circunstâncias em que as temperaturas ambientais são elevadas e o consumo dos animais é reduzido, a inclusão de lipídios às dietas pode reduzir o incremento calórico e minimizar a redução do desempenho devido ao baixo consumo (ALMEIDA et al, 2007). …”

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Energia líquida e ractopamina para leitoas em terminação sob altas temperaturas ambientais

et al. 2011

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“…Increased secretion of pancreatic juice, the amount of digestive enzymes in the small intestine will be greater. Thus, coupled with the fact that the lipids reduce the rate of gastric emptying, may allow greater absorption of nutrients, especially proteins (Almeida et al, 2007). Figueroa et al (2002) suggest that nitrogen balance is more sensitive both to the inadequacy of amino acids on the energy level of the diets, compared to performance data of pigs.…”

Section: Resultsmentioning

confidence: 99%

Levels of true digestible lisiane and metabolizable energy for growing pigs: effect on nitrogen and energy balance

Chiaradia¹,

Zangerônimo

Fialho

et al. 2009

Ciênc. agrotec.

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An experiment was conducted at the Department of Animal Husbandry of Universidade Federal de Lavras aiming to study the nitrogen and energy balance in diets with reduced crude protein rates (CP) and different levels of energy and lysine for growing pigs. 52 castrated pigs (initial weight = 36.13 ± 2.8 kg) of high genetic potential were used, housed individually in metabolism cages (experimental unit). The treatments consisted of 12 diets with three levels of metabolizable energy (ME) (3060, 3230 and 3400 kcal / kg) and four of true digestible lysine (TDL) (0.7, 0.9, 1.1 and 1, 3%) with 14% CP plus a control diet with 3230 kcal ME / kg, 1.03% TDL and 18% CP. We used a DBC in time 3x4 +1 factorial design with four replications to verify the absorbed nitrogen (AN), N retained (NR), the NR / NA (%),absorbed energy (AE), retained energy (RE) and the ratio RE /AE (%). In relation retained nitrogen / absorbed nitrogen was declining linear regression (P <0.05) when 3400 kcal / kg was used, where the lowest levels (0.7 and 0.9%) of TDL showed the best results. In the study of energy balance, for the variables retained energy and the relationship between energy there was no difference (P> 0.05) between the control treatment and other experimental diets. It is concluded that the levels 3230 kcal / kg and 1.03% of TDL can be used without affecting the utilization of nitrogen by growing pigs in diets with reduced crude protein content.Index terms: Synthetic amino acids, nutrition, metabolism, ideal protein. RESUMOFoi conduzido um experimento no Departamento de Zootecnia da Universidade Federal de Lavras com o objetivo de estudar o balanço de nitrogênio e energético em rações contendo reduzido teor de proteína bruta (PB) e diferentes níveis de energia e lisina para suínos em crescimento. Foram utilizados 52 suínos machos castrados (peso inicial = 36,13 ± 2,8 kg) de alto potencial genético, alojados individualmente em gaiolas de metabolismo (unidade experimental). Os tratamentos consistiram em 12 dietas formuladas com três níveis de energia metabolizável (EM) (3060, 3230 e 3400 kcal/kg) e quatro de lisina digestível verdadeira (LISD) (0,7; 0,9; 1,1 e 1,3%) com 14% PB mais um tratamento controle, com 3230 kcal EM/kg, 1,03% LISD e 18% PB. Utilizouse um DBC no tempo em fatorial 3x4+1, com quatro repetições, para verificar o N absorvido (NA), N retido (NR), a relação NR/ NA (%), energia absorvida (EA), energia retida (ER) e a relação ER/EA (%). Na relação nitrogênio retido /nitrogênio absorvido houve regressão linear decrescente (P<0,05) quando 3400 kcal/kg foi utilizado, onde os menores níveis (0,7 e 0,9%) de LISD apresentaram os melhores resultados. No estudo do balanço energético, para a variáveis energia retida e a relação entre energia não houve diferença (P>0,05) entre o tratamento controle e as demais dietas experimentais. Conclui-se que os níveis 3230 kcal EM/kg e 1,03% de LISD podem ser utilizados sem afetar o aproveitamento do nitrogênio pelos suínos em crescimento, em rações com reduzido teor de proteína bruta.T...

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Digestibilidade ileal e perdas endógenas de aminoácidos de dietas com óleo de soja para suínos em crescimento

Cited by 5 publications

References 8 publications

Reduction in the protein level and addition of oil in diets for finishing pugs under different temperatures

Reduction in the protein level and addition of oil in diets for finishing pugs under different temperatures

Energia líquida e ractopamina para leitoas em terminação sob altas temperaturas ambientais

Levels of true digestible lisiane and metabolizable energy for growing pigs: effect on nitrogen and energy balance

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