Digestibilidade ileal de aminoácidos de alimentos utilizados em dietas pré-iniciais para leitões, determinada pelo método do sacrifício

Apolônio, Lourdes Romão; Donzele, Juarez Lopes; Oliveira, Rita Flávia Miranda de; Silva, Francisco Carlos de Oliveira; Souza, André Viana Coelho de; Lopes, Darci Clementino; Freitas, Letícia da Silva

doi:10.1590/s1516-35982002000800014

Cited by 4 publications

(4 citation statements)

References 14 publications

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“…On the seventh day, digesta were collected from the terminal ileum, according a technique adapted by Apolônio et al (2002). The experimental design was completely randomized with two treatments and five replicates.…”

Section: Methodsmentioning

confidence: 99%

Nutritional Evaluation of Tilapia Filleting Waste Meal for Swine in the Nursery Phase

et al. 2016

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-Three experiments were conducted to determine the nutritional composition of tilapia filleting waste meal (TFWM) for pigs in the initial phase. In the first experiment, the chemical composition and the values of digestible and metabolizable energy of TFWM were determined using 10 pigs (15.10 ± 0.74 kg), distributed in cages for metabolic research (2 treatments X 5 replicates). The TFWM replaced 20% of the reference diet based on corn and soybean meal. In the second experiment, the ileal digestibility coefficients of amino acids present in TFWM were determined, using chromic oxide as a marker, through the method of sacrifice, using 10 pigs (15.00 ± 0.27 kg), distributed in cages for metabolic research (2 treatments X 5 replicates). Treatments consisted of a basal diet and one without protein. In the third experiment, the performance of pigs fed diets containing different concentrations of TFWM (0, 5, 10, 15 and 20%) was evaluated. Forty pigs (15.00 ± 0.87 kg), distributed in pairs in nursery pens (5 treatments X 4 replicates) were used. The values of digestible and metabolizable energy corresponded to 3,632 and 3,260 kcal/kg, respectively. Inclusion of up to 10% TFWM in the diet of barrows from 15 to 30 kg did not affect the average daily gain and feed conversion of the animals. RESUMO -Foram realizados três experimentos para determinar a composição nutricional da farinha dos resíduos industriais de filetagem da tilápia (FRIFT) para suínos, machos castrados, em fase inicial. No primeiro, foi determinada a composição bromatológica e valores de energia digestível e metabolizável da FRIFT, utilizando-se 10 suínos (15,10 kg ± 0,74), distribuídos em gaiolas para estudos metabólicos (2 tratamentos X 5 repetições). A FRIFT substituiu em 20% a ração referência, à base de milho e farelo de soja. No segundo experimento, foram determinados os coeficientes de digestibilidade ileal dos aminoácidos da FRIFT, empregando-se óxido crômico como indicador, pelo método do sacrifício, tendo sido utilizados 10 suínos (15,00 kg ±0,27), distribuídos em gaiolas para estudos metabólicos (2 tratamentos X 5 repetições). Os tratamentos consistiram de uma ração basal e outra sem proteína. No terceiro experimento, foi avaliado o desempenho de suínos alimentados com rações contendo diferentes níveis de FRIFT (0, 5, 10, 15 e 20%). Foram utilizados 40 suínos (15,00 kg ±0,87), distribuídos aos pares em baias de creche (5 tratamentos X 4 repetições). Os valores de energia digestível e metabolizável corresponderam a 3.632 e 3.260 kcal/kg, respectivamente. A inclusão de até 10 % de FRIFT na dieta de suínos machos castrados, dos 15 aos 30 kg, não alterou o ganho de peso diário e a conversão alimentar dos animais.Palavras-chave: Alimentos alternativos. Valores energéticos. Aminoácidos digestíveis.

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Section: Methodsmentioning

confidence: 99%

Nutritional Evaluation of Tilapia Filleting Waste Meal for Swine in the Nursery Phase

et al. 2016

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“…Many studies have investigated endogenous loss of proteins and amino acids (AAs) at the ileal level in growing pigs [ 1 - 3 ]. However, only a few studies have researched this subject in piglets [ 4 - 7 ]. Mariscal-Landín and Reis de Souza [ 6 ] reported high proline endogenous losses following prolonged intake (15 d) of a low protein diet in piglets, and similar effects of low protein or protein-free diets have been reported in growing pigs [ 1 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Estimation of endogenous protein and amino acid ileal losses in weaned piglets by regression analysis using diets with graded levels of casein

Souza

Barreyro

Landín

2013

J Animal Sci Biotechnol

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BackgroundMany studies have investigated endogenous loss of proteins and amino acids (AAs) at the ileal level in growing pigs. However, only a few studies have researched this subject in piglets. Knowledge regarding AA ileal digestibility in piglets would be helpful during the formulation of diets for weaning piglets, rather than just using coefficients obtained in growing pigs. Therefore, in this study, we sought to estimate endogenous protein and AA ileal losses in piglets. Furthermore, apparent and true ileal digestibility (AID and TID) of protein and AAs from casein were measured.ResultsThe average flow of protein was 20.8 g/kg of dry matter intake (DMI). Basal protein loss, as estimated by regression, was 16.9 g/kg DMI. Glutamic acid, arginine, and aspartic acid (2.2, 1.4, and 1.2 g/kg DMI, respectively) were the AAs for which greater losses were seen. The AID of protein and AAs increased as the protein level in the diet increased. A higher increment in AID was observed between diets with 80 and160 g CP/kg of feed; this finding was mainly attributable to increases in glycine and arginine (46.1% and 18%, respectively). The TID of protein was 97.8, and the TID of AAs varied from 93.9 for histidine to 100.2 for phenylalanine.ConclusionsThe basal endogenous protein loss in piglets was 16.9 g/kg DMI. Endogenous protein was rich in glutamic acid, aspartic acid, and arginine, which represented 32.7% of endogenous protein loss in weaning piglets. The TID of casein was high and varied from 93.0 for histidine to 100.2 for phenylalanine.

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“…Animals were submitted to an adaptation period of 5 d to the experimental diets and cages. Sampling of ileal digesta was performed as proposed by Lazzeri (2011), which was adapted from Apolônio et al (2002). Before proceeding with surgery, tranquilizers and an anesthetic were injected into the pigs.…”

Section: Surgery Procedures and Digesta Collectionmentioning

confidence: 99%

Simultaneous determination of standardized ileal digestible tryptophan and lysine for barrows from 15 to 30kg live weight

et al. 2015

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The digestible amino acid (AA) determination of ingredients, or experimental diets, are essential in obtaining the real levels of AA that are being studied, as well as of other indispensable AA, because the lack of a single indispensable AA may limit pig growth performance. Two experiments were conducted to determine the optimum levels and the ideal ratio of standardized ileal digestible (SID) Trp and Lys for barrows from 15 to 30 kg of live weight. The first experiment (Exp. 1) was conducted to determine the SID AA content of the basal diet used in the growth performance study (Exp. 2). Ten crossbred barrows (21.57 1.6 kg live weight) were used in Exp. 1. Pigs were fed a basal diet and a protein free diet to determine the SID of Trp, Lys, and all other indispensable AA of the basal diet. In Exp. 2, 64 barrows (15.0 71.6 kg) were allotted to 16 diets in a 4 Â 4 factorial arrangement of treatments (1.55, 1.85, 2.15, and 2.45 g SID Trp and 9.72, 11.12, 12.52, and 13.92 g SID Lys/kg) with 4 replications per treatment. In both Exp. 1 and 2, each pig was considered as an experimental unit. Growth performance, Longissimus muscle (LM), backfat thickness, and plasma urea nitrogen (PUN) were evaluated. Average daily feed intake and average daily gain increased linearly (Po 0.05) with increasing levels of SID Trp. There was a quadratic effect (P¼ 0.04) of dietary SID Trp and Lys levels on the gain:feed, and the optimal levels were estimated to be 2.1 (0.65 g/Mcal ME) and 11.98 g/kg (3.71 g/Mcal ME), respectively, resulting in a SID Trp:Lys of 17.5:100. A quadratic effect of SID Trp (P¼ 0.021) and Lys (P ¼0.026) levels on LM was observed, and the optimum levels were 2.08 and 11.36 g/kg diet, respectively, with a Trp:Lys of 18.3:100. The amount of PUN decreased linearly (P¼ 0.004) as SID Lys increased. For pigs used in our study (between 15 and 30 kg live weight), the SID Trp and SID Lys requirements are 2.10 and 11.98 g/kg, respectively. The corresponding Trp:Lys are 17.5:100.

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Digestibilidade ileal de aminoácidos de alimentos utilizados em dietas pré-iniciais para leitões, determinada pelo método do sacrifício

Cited by 4 publications

References 14 publications

Nutritional Evaluation of Tilapia Filleting Waste Meal for Swine in the Nursery Phase

Nutritional Evaluation of Tilapia Filleting Waste Meal for Swine in the Nursery Phase

Estimation of endogenous protein and amino acid ileal losses in weaned piglets by regression analysis using diets with graded levels of casein

Simultaneous determination of standardized ileal digestible tryptophan and lysine for barrows from 15 to 30kg live weight

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