Estimação por aproximação química dos teores de proteína indegradável insolúvel em detergente neutro em forragens tropicais

Detmann, Edênio; Silva, J.F.C.; Clipes, Renata Cogo; Henriques, Lara Toledo; Filho, Sebastião de Campos Valadares; Queiroz, Amanda Caroliny Marques de; Paulino, Mário Fonseca

doi:10.1590/s0102-09352010000300033

Cited by 8 publications

(9 citation statements)

References 6 publications

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“…Therefore, this approach must be utilized with caution, and it is preferable, when feasible, that the estimate of the UNDIP be obtained by biological method, i.e., through the evaluation of the residual CP of the iNDF estimated by long-term in situ procedures, followed by treatment of the sample with neutral detergent fiber for the removal of microbial debris (Clipes et al, 2010a;Detmann et al, 2010b).…”

Section: Resultsmentioning

confidence: 99%

“…According to Gomes et al (2011), none of the different methods employed at the evaluation of lignin fully meets the nutritional expectation, with significant differences in the results obtained in laboratories for all the methods applied. Stronger correlations between lignin contents and extent of the rumen degradation of the NDF have been obtained by methods distinct from the one adopted by the NRC (2001) and suggested by Detmann et al (2010a) (Traxler et al, 1998;Clipes et al, 2010b;Gomes et al, 2011). This seems to indicate that limitations intrinsic of the lignin content estimated by the method of acid hydrolysis may reduce the accuracy of estimates of the pdNDF and iNDF fractions by chemical approach.…”

Section: Resultsmentioning

confidence: 99%

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Evaluation of models for prediction of the energy value of diets for growing cattle from the chemical composition of feeds

et al. 2012

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-The objective of this study was to estimate and evaluate the contents of apparently digestible fractions of crude protein, ether extract and non-fibrous carbohydrates, the digestible fraction of the neutral detergent fiber and the content of total digestible nutrients (TDN) from the chemical composition of feeds in growing cattle fed different diets. Fourteen F1 Red Angus × Nellore young bulls with average age and weight of 12 months and 287±36 kg were used. Animals were fed elephant grass silage, corn silage or signal grass hay, with or without supplementation of 200 g concentrate per kg of the total diet. The experiment consisted of two 13-days periods, in which the concentrate supplementation was crossed over animals. The values of digestible fractions and the TDN content observed were obtained based on total collection of feces. Several sub-models applied to the different digestible fractions were assessed and discussed. Estimates of the TDN content in the diet were produced from the combination of sub-models applied to the individual digestible fractions. The TDN content was more efficiently predicted from the sub-models proposed by Detmann et al. (2010) when biological procedures for the estimation of the undegradable fraction of the protein and the potentially degradable fraction of the neutral detergent fiber were considered.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Evaluation of models for prediction of the energy value of diets for growing cattle from the chemical composition of feeds

et al. 2012

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“…However, as pointed out previously, such an analytic approximation can be a hindrance in some situations, because fistulated animals may not be available. Thus, an alternative equation was developed to obtain the UNDIP value from the acid detergent insoluble protein (ADIP) using data from feeds produced under tropical conditions (Detmann et al, 2010a;n = 540), that is given by:…”

Section: Sub-model For Cpmentioning

confidence: 99%

“…Due to this limitation, new sub-models to predict the digestible fractions of CP, EE, NFC, and NDF were developed and evaluated under tropical conditions (Detmann et al, 2004a;2006a;2006b;2006c;2008b;2008c;2010a). The unified assessment of these sub-models, that constitutes a new summative system, showed that they are capable of more exact prediction of the TDN content in diets offered to cattle in Brazil (Detmann et al, 2008b;Magalhães et al, 2010;Azevêdo et al, 2011;Sampaio et al, 2012), creating an alternative to applying the model adopted by the NRC (2001) and culminating in the adoption of the prediction system in the second edition of the BR-CORTE System (Detmann et al, 2010b).…”

Section: Introductionmentioning

confidence: 99%

Prediction of the energy value of cattle diets based on the chemical composition of feeds

Edenio¹,

Silva²,

Campos³

et al. 2023

Nutrient Requirements of Zebu and Crossbred Cattle - BR-CORTE

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The chemical composition of a feed/diet is the main determinant of its ability to supply nutrients to meet the demands for animal maintenance and production, especially regarding energy supply, which is obtained through digesting and metabolizing the organic components of feeds. Feed composition tables are reliable because they provide exact mean values for energy concentrations. However, there are variations in field conditions that cannot be properly contemplated by data tabulation. Thus, the use of chemical composition to predict the ability of a feed to supply energy can facilitate the work of nutritionists when formulating diets in specific situations, so they can be more exact and appropriate for each productive situation.

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“…In the case of crude fiber, the foods are first submitted to digestion with diluted acid and then to digestion with diluted base (alkali). The remaining portion after the two digests is named crude fiber, then considered as the portion of the indigestible carbohydrates by the animal (Detmann et al 2010;Silva and Queiroz, 2002). As the majority of fiber sources consumed by the animals are from a vegetable source, the definition of crude fiber basically covers the fibers of vegetal origin: cellulose and alkali-insoluble lignin (Silva and Queiroz, 2002).…”

Section: Apparent Digestibility Coefficientmentioning

confidence: 99%

Apparent digestibility coefficient of chitosan foam for nile tilapia

Zadinelo

Santos

Alves

et al. 2020

BJD

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Chitosan foam can be used as a filter element for pollutants in Nile tilapia farming tanks to reduce the industrial chitin waste and value it. Another possibility is the inclusion of chitosan foam in fish feed. Therefore, this study aims at evaluating the apparent digestibility of nutrients and energy of chitosan foam for Nile tilapia. Apparent digestibility determination was carried out by the indirect fecal collection method, using chromic oxide as an inert indicator, a reference-diet and a test diet (70% reference-diet and 30% chitosan foam). Hence, 120 juveniles of Nile tilapia (50 ± 5 g) were used, divided into six replications. After the collection period, bromatological analyses of foam, diets and feces were carried out, as well as the determination of chromium concentration in feces. The coefficients of apparent digestibility concerning nutrients and energy were then calculated. Chitosan foam showed 83.7% digestible dry matter, 5.7% digestible protein, 7.9% digestible fat, 0.6% digestible ashes, 17.6% digestible crude fiber and 1021 kcal kg -1 digestible energy for juveniles of Nile tilapia. It can be concluded that chitosan foam is partially digestible for Nile tilapia and can be used mainly as a feed source of fiber and fat.

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Estimação por aproximação química dos teores de proteína indegradável insolúvel em detergente neutro em forragens tropicais

Abstract: Estimação por aproximação química dos teores de proteína indegradável insolúvel em detergente neutro em forragens tropicais [Estimation of undegradable neutral detergent insoluble protein in tropical forages by chemical approaching]

Cited by 8 publications

References 6 publications

Evaluation of models for prediction of the energy value of diets for growing cattle from the chemical composition of feeds

Evaluation of models for prediction of the energy value of diets for growing cattle from the chemical composition of feeds

Prediction of the energy value of cattle diets based on the chemical composition of feeds

Apparent digestibility coefficient of chitosan foam for nile tilapia

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