Additivity of apparent ileal and fecal phosphorus digestibility values measured in single feed ingredients for growing-finishing pigs

Fan, Ming Z.; Sauer, W. C.

doi:10.4141/a01-072

Cited by 28 publications

(20 citation statements)

References 27 publications

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“…The levels of CTTAD and CTTSD of P in CAM in the present study are almost two times greater than those reported by others (Fan & Sauer, 2002;Akinmusire & Adeola, 2009;NRC, 2012;Rodríguez et al, 2013). However, availability of P in CAM is lower than that of SBM (NRC, 2012;Rodríguez et al, 2013).…”

Section: Discussioncontrasting

confidence: 75%

Coefficient of standardized total tract digestibility of phosphorus in oilseed meals and distillers dried grains in growing-finishing pigs

Sk¹,

Yk²,

Cho³

et al. 2017

SA J. An. Sci.

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This study was conducted to determine the coefficient of total tract standardized digestibility (CTTSD) of phosphorus (P) in oilseed meals and distillers dried grains (DDG) fed to growing-finishing pigs. Twelve barrows (initial bodyweight (BW) ± standard deviation, 52.25 ± 2.57 kg) were allocated individually to metabolism cages. The experimental design was a 12 × 8 incomplete Latin square with 12 dietary treatments and eight replication periods. The diets were formulated individually with dehulled soybean meal produced in Korea (SBM-KD), soybean meal produced in India (SBM-I), soybean meal produced in Korea (SBM-K), corn high-protein distiller dried grains (HPDDGs), tapioca distillers dried grains (TDDG), canola meal (CAM), corn germ meal (CGM), copra meal (CM), palm kernel meal (PKM), sesame meal (SM), perilla meal (PM), and a P-free diet. Intake of P was highest in SM and PM. Excretion of P was reduced in y ascending order as HPDDG, TDDG and CGM; SBM-K; and SM and PM. The CTTAD of P was higher in CGM than SBM-K, TDDG, SM and PM. HPDDG and CGM showed greater CTTSD of P than SBM-K, CAM and PM. Digestible concentration of P on CTTSD (CTTSD-P) of P was greater in PM and CAM than the others except for SBM-KD. In summary, PM could be utilized as an alternative feedstuff to SBM, but its usage is regarded only as a source of P. In addition, the results of the current study would provide valuable information for formulating pig feed with precise P utilization in ingredients using mixed diets. ______________________________________________________________________________________

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Section: Discussioncontrasting

confidence: 75%

Coefficient of standardized total tract digestibility of phosphorus in oilseed meals and distillers dried grains in growing-finishing pigs

Sk¹,

Yk²,

Cho³

et al. 2017

SA J. An. Sci.

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“…In this case, the digestibility of diets S and BS increased by 46 and 20%, respectively. A similar increase was found in pigs consuming all-plant diets without inorganic P supplements (Sands et al, 2001;Fan and Sauer, 2002;Walz and Pallauf, 2003). Due to the improved digestibility, faecal P excretion tended to decrease in pigs fed diets supplemented with phytase.…”

Section: Discussionsupporting

confidence: 61%

Effect of microbial phytase on apparent digestibility and retention of phosphorus and nitrogen in growing pigs

Patráš¹,

Nitrayová²,

Sommer³

et al. 2006

CZECH J ANIM SCI

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Six female pigs of approximately 50 kg BW, fitted with simple T-cannula in the terminal ileum, were used to study the effect of microbial phytase on apparent total tract digestibility and retention of P and N. Three P-adequate diets (digestible P concentration 2.3 g/kg) containing barley (B), soybean meal (S) or their mixture (BS) with or without phytase supplement (1 000 FTU/kg) were fed to pigs using a 6 × 6 Latin square design. The addition of phytase increased (P < 0.05) apparent total P digestibility of diets S and BS from 56.5 and 57.2% to 69.0 and 65.2%, respectively, and apparent plant P digestibility of the same diets from 41.3 and 50.0% to 60.5 and 60.0%, respectively. An insignificant improvement in total and plant P digestibilities was found in diet B. Phytase supplementation reduced (P < 0.05) P excretion in pigs fed diets S and BS by 25 and 14%, respectively. As compared with diets S and BS, urinary P excretion in pigs fed diet B was much higher, which suggests a lower requirement for available P due to the lower protein deposition and growth rate. Phytase supplementation had no effect on digestibility or retention of N. In all three diets, total tract P digestibility was lower (P < 0.05) than ileal digestibility thus indicating a net flux of P into the large intestine.

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“…Because P and Ca are absorbed mainly from the SI, it is considered that the microbial activity in the large intestine does not modify the amount of P and Ca absorbed (Jongbloed, 1987). However, it should be noted that Fan and Sauer (2002) concluded that the role of the large intestine in wholebody P homeostasis needs to be clarified before using apparent P digestibility values in diet formulation.…”

Section: Prediction Of P and Ca Digestibilitymentioning

confidence: 96%

Modeling the fate of dietary phosphorus in the digestive tract of growing pigs1

Létourneau-Montminy

Narcy

Lescoat

et al. 2011

Journal of Animal Science

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Environmental effects of excess P from manure and the soaring price of phosphates are major issues in pig production. To optimize P utilization, it is crucial to improve our capacity to predict the amount of P absorbed, while taking into account the main factors of variation. Mathematical modeling can represent the complexity of the processes and interactions in determining the digestive utilization of P in growing pigs. This paper describes and evaluates a model developed to simulate the fate of the dietary forms of P in the digestive tract of growing pigs, with particular emphasis on the effect of dietary Ca and exogenous phytase on P digestive utilization. The model consists of 3 compartments associated with specific anatomical sections: stomach, proximal small intestine, and distal small intestine. The main metabolic processes occurring in these sections are, respectively, P solubilization/insolubilization and phytate P hydrolysis, and P absorption and P insolubilization. Model parameters governing these flows were derived from in vitro and in vivo literature data. The sensitivity analysis revealed that the model was stable within a large range of model parameter values (±1.5 SD). The model was able to predict the efficacy of Aspergillus niger microbial phytase in accordance with literature values, as well as the decreased efficacy of plant phytase compared with microbial phytase. The prediction capabilities of the model were assessed by comparing actual and simulated P and Ca apparent total-tract digestibility (ATTD) based on published pig data not used for model development. Prediction of P digestibility across 66 experiments and 281 observations was adequate [P ATTD observed = 0.24 (SE, 0.943) + 0.98 (SE, 0.0196) × P ATTD predicted; R(2), 0.90; disturbance error (ED), 96.5%], whereas prediction of Ca digestibility across 47 experiments and 193 observations was less accurate (Ca ATTD observed = 11.1 + 0.75 × Ca ATTD predicted; R(2), 0.78; ED, 20.4%). A lack of agreement between experimental and simulated Ca digestibility was found. This model is, therefore, useful in evaluating P digestibility for different feedstuffs and feeding strategies. It can also be used to provide insight for improving dietary P utilization, especially from plant sources, by quantifying the effect of the mean sources of variation affecting P utilization.

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Additivity of apparent ileal and fecal phosphorus digestibility values measured in single feed ingredients for growing-finishing pigs

Cited by 28 publications

References 27 publications

Coefficient of standardized total tract digestibility of phosphorus in oilseed meals and distillers dried grains in growing-finishing pigs

Coefficient of standardized total tract digestibility of phosphorus in oilseed meals and distillers dried grains in growing-finishing pigs

Effect of microbial phytase on apparent digestibility and retention of phosphorus and nitrogen in growing pigs

Modeling the fate of dietary phosphorus in the digestive tract of growing pigs1

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