11
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Prediction of basal endogenous losses of amino acids based on body weight and feed intake in pigs fed nitrogen-free diets Translated title: Predição das perdas basais endógenas de aminoácidos a partir do peso corporal e do consumo de alimento em porcos submetidos a dietas livres de nitrogênio Translated title: Predicción de las pérdidas endógenas basales de aminoácidos a partir del peso corporal y consumo de alimento en cerdos sometidos a dietas libres de nitrógeno

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Background: accurate estimations of basal endogenous losses (BEL) of amino acids (AA) are important for the calculation of standardized ileal digestibility values. Objectives: to address the influence of body weight (BW) and feed intake on BEL of crude protein (CP) and AA and to develop prediction equations for BEL of CP and AA in pigs fed nitrogen-free diets. Methods: based on data derived from 34 research papers, prediction equations for BEL of CP and AA were generated using BW and feed intake per maintenance feed intake (FI:MFI) based on energy concentration as independent variables. Results: initial BW (IBW) and FI:MFI ranged from 13.8 to 109.8 kg and from 1 to 5, respectively. Mean values for BEL of CP, Lys, Met, Thr, and Trp were 17.2 (CV = 50.9%), 0.42 (CV = 56.0%), 0.14 (CV = 80.8%), 0.55 (CV = 41.3%), and 0.14 (CV = 57.5%) g/kg dry matter intake (DMI), respectively. The FI:MFI was negatively correlated with BEL of CP and AA except Met (r < -0.39; p<0.05). Prediction equations for estimating the BEL of CP and AA (g/kg DMI) developed were: BEL of CP = 47.5 - (8.09 × 10-2 × IBW) - (8.83 × FI:MFI) with R² = 0.32 and p = 0.011; BEL of Lys = 0.979 - (1.00 × 10-3 × IBW) - (0.174 × FI:MFI) with R2 = 0.24 and p = 0.014; BEL of Thr = 1.09 - (1.82 × 10-3 × IBW) - (0.153 × FI:MFI) with R² = 0.28 and p = 0.007; and BEL of Trp = 0.552 - (1.11 × 10-3 × IBW) - (0.120 × FI:MFI) with R² = 0.47 and p = 0.002. Conclusion: based on the equations above, IBW and FI:MFI clearly decrease BEL of CP and AA. The equations provided in this paper may be used for estimating BEL of CP and AA.

          Translated abstract

          Antecedentes: a estimação precisa das perdas endógenas basais (BEL) de aminoácidos (AA) é importante para calcular os valores da digestibilidade ileal padronizada. Objetivos: estabelecer a influencia do peso corporal e do consumo de alimento sobre as BEL da proteína bruta (CP) e AA, e desenvolver equações de predição para as BEL da CP e AA em porcos alimentados com dietas livres de nitrogênio. Métodos: baseados em informação proveniente de 34 artigos científicos, foram geradas equações de predição para as BEL da CP e AA usando o peso corporal (BW) e o consumo de alimento por consumo de manutenção (FI:MFI) com base na concentração de energia como variáveis independentes. Resultados: BW e FI:MFI variaram de 13,8 a 109,8 kg e de 1 a 5, respectivamente. Os valores da média para BEL da CP, Lys, Met, Thr, e Trp foram 17,2 (CV = 50,9%), 0,42 (CV = 56,0%), 0,14 (CV = 80,8%), 0,55 (CV = 41,3%), e 0,14 (CV = 57,5%) g/kg de consumo de matéria seca (DMI), respectivamente. O FI:MFI teve correlação negativa com as BEL da CP e AA exceto com a Met (r < -0,39; p<0,05). As equações de predição para estimar as BEL da CP e AA (g/kg DMI) desenvolvidas foram: BEL da CP = 47,5 - (8,09 × 10-2 × IBW) - (8,83 × FI:MFI) com um R² = 0,32 e um p = 0,011; BEL de Lys = 0,979 - (1,00 × 10-3 × IBW) - (0,174 × FI:MFI) com um R² = 0,24 e um p = 0,014; BEL de Thr = 1,09 - (1,82 × 10-3 × IBW) - (0,153 × FI:MFI) com um R² = 0,28 e um p = 0,007; e as BEL de Trp = 0,552 - (1,11 × 10-3 × IBW) - (0,120 × FI:MFI) com um R² = 0,47 e um p = 0,002. Conclusão: Com base nas anteriores equações, o IBW e o FI:MFI claramente diminuíram as BEL da CP e AA. As equações fornecidas neste artigo podem ser utilizadas para estimar as BEL do CP e AA.

          Translated abstract

          Antecedentes: la estimación precisa de las pérdidas endógenas basales (BEL) de aminoácidos (AA) es importante para calcular los valores de la digestibilidad ileal estandarizada. Objetivos: establecer la influencia del peso corporal y el consumo de alimento sobre las BEL de proteína cruda (CP) y AA, y desarrollar ecuaciones de predicción para las BEL de CP y AA en cerdos alimentados con dietas libres de nitrógeno. Métodos: basados en información proveniente de 34 artículos científicos, fueron generadas ecuaciones de predicción para las BEL de CP y AA usando el peso corporal (BW) y el consumo de alimento por consumo de mantenimiento (FI:MFI) con base en la concentración de energía como variables independientes. Resultados: BW y FI:MFI variaron de 13,8 a 109,8 kg y de 1 a 5, respectivamente. Los valores de la media para BEL de CP, Lys, Met, Thr, y Trp fueron 17,2 (CV = 50,9%), 0,42 (CV = 56,0%), 0,14 (CV = 80,8%), 0,55 (CV = 41,3%), y 0,14 (CV = 57,5%) g/kg de consumo de materia seca (DMI), respectivamente. El FI:MFI se correlacionó negativamente con las BEL de CP y AA excepto con la Met (r < -0,39; p<0,05). Las ecuaciones de predicción para estimar las BEL de la CP y AA (g/kg DMI) desarrolladas fueron: BEL de CP = 47,5 - (8,09 × 10-2 × IBW) - (8,83 × FI:MFI) con un R² = 0,32 y un p = 0,011; BEL de Lys = 0,979 - (1,00 × 10-3 × IBW) - (0,174 × FI:MFI) con un R² = 0,24 y un p = 0,014; BEL de Thr = 1,09 - (1,82 × 10-3 × IBW) - (0,153 × FI:MFI) con un R² = 0,28 y un p = 0,007; y las BEL de Trp = 0,552 - (1,11 × 10-3 × IBW) - (0,120 × FI:MFI) con un R² = 0,47 y un p = 0,002. Conclusión: con base en las anteriores ecuaciones, el IBW y el FI:MFI claramente redujeron las BEL de CP y AA. Las ecuaciones suministradas en este artículo pueden ser utilizadas para estimar las BEL de CP y AA.

          Related collections

          Most cited references46

          • Record: found
          • Abstract: not found
          • Book: not found

          Nutrient Requirements of Swine : Eleventh Revised Edition

          (2012)
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Invited review: Amino acid bioavailability and digestibility in pig feed ingredients: terminology and application.

            In this review, the terminology that is used to describe the bioavailability and ileal digestibility of AA in pig feed ingredients is defined. Aspects of the methodology to establish bioavailability and ileal digestibility values also are discussed, and recommendations about the use of these values are provided. Two main factors can contribute to differences between bioavailability and ileal digestibility of AA. First, some AA, such as Lys, may be absorbed in chemical complexes that preclude their use for metabolism. Second, fermentation in the upper gut may result in a net loss or gain of AA to the animal. In addition, dietary effects on the efficiency of using bioavailable AA intake for tissue growth or milk production should be considered and may be attributed to endogenous AA losses in the hindgut and the metabolic costs associated with endogenous gut protein synthesis and losses. Ileal digestibility values may be expressed as apparent ileal digestibility (AID), standardized ileal digestibility (SID), or true ileal digestibility (TID). These terms are used to specify how ileal endogenous AA losses are reflected in digestibility values. Ileal endogenous AA losses may be separated into basal losses, which are not influenced by feed ingredient composition, and specific losses, which are induced by feed ingredient characteristics such as levels and types of fiber and antinutritional factors. Values for AID are established when total ileal outflow of AA (i.e., the sum of endogenous losses and nondigested dietary AA) is related to dietary AA intake. A concern with the use of AID values is that these are not additive in mixtures of feed ingredients. This concern may be overcome by correcting AID values for defined basal endogenous losses of AA, which yields SID values. Furthermore, if the AID values are corrected for basal and specific endogenous losses, then values for TID are calculated. However, reliable procedures to routinely measure specific endogenous losses are not yet available. It is recommended that basal ileal endogenous losses of AA should be measured in digestibility experiments using a defined protein-free diet and that these losses are reported with observed AID and SID values. It is suggested that SID values should be used for feed formulation, at least until more information on TID values becomes available.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Effect of dietary soybean oil and soybean protein concentration on the concentration of digestible amino acids in soybean products fed to growing pigs.

              An experiment was conducted to measure the effect of adding soybean oil to soybean meal (SBM) and soy protein concentrate (SPC) on apparent (AID) and standardized (SID) ileal digestibility of CP and AA by growing pigs. A second objective was to compare AID and SID of AA in a new high-protein variety of full fat soybeans (FFSB) to values obtained in other soybean products. Commercial sources of FFSB (FFSB-CV), SBM, and SPC, and of a new high-protein variety of FFSB (FFSB-HP) were used in the experiment. Four diets were prepared using each soybean product as the sole source of CP and AA in 1 diet. Two additional diets were formulated by adding soybean oil (7.55 and 7.35%, respectively) to the diets containing SBM and SPC. A nitrogen-free diet was also used to measure basal endogenous losses of CP and AA. The 2 sources of FFSB were extruded at 150 degrees C before being used in the experiment. Seven growing barrows (initial BW = 26.2 kg) were prepared with a T-cannula in the distal ileum and allotted to a 7 x 7 Latin square design. Ileal digesta were collected from the pigs on d 6 and 7 of each period. All digesta samples were lyophilized and analyzed for DM, CP, AA, and chromium, and values for AID and SID of CP and AA were calculated. The addition of oil improved (P < 0.05) the SID of most indispensable AA in SBM and SPC. The SID for 6 of the indispensable AA in FFSB-HP were greater (P < 0.05) than in FFSB-CV, and the SID for all indispensable AA except Met was greater (P < 0.05) in FFSB-HP than in SBM. However, the SID for most AA in FFSB-HP was similar to SBM with oil and SPC, but these values were lower (P < 0.05) than in SPC with oil. In conclusion, the addition of oil improved the SID of most AA in SBM and SPC fed to growing pigs, and the SID of AA in FFSB-HP were greater than in SBM and similar to the SID of AA in SBM with oil and in SPC.
                Bookmark

                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                rccp
                Revista Colombiana de Ciencias Pecuarias
                Rev Colom Cienc Pecua
                Facultad de Ciencias Agrarias, Universidad de Antioquia (Medellín )
                0120-0690
                September 2013
                : 26
                : 3
                : 186-192
                Affiliations
                [1 ] Konkuk University South Korea
                Article
                S0120-06902013000300005
                e5f016cf-9524-4b5a-8a57-2d16d5015b8e

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Colombia

                Self URI (journal page): http://www.scielo.org.co/scielo.php?script=sci_serial&pid=0120-0690&lng=en
                Categories
                AGRICULTURE, DAIRY & ANIMAL SCIENCE

                Animal agriculture
                modeling,standardized ileal digestibility,swine,digestibilidade ileal padronizada,modelação,porcinos,digestibilidad ileal estandarizada,modelación

                Comments

                Comment on this article