Phosphorus Availability and Requirements in Pigs

Jongbloed, A.W.; Everts, H.; Kemme, P.A.

doi:10.1016/b978-0-7506-1397-2.50008-3

Cited by 30 publications

(41 citation statements)

References 18 publications

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Section: Discussioncontrasting

confidence: 46%

“…However, these estimates are much higher than the apparent P digestibility and P availability (15-25%) previously reported (Jongbloed et al, 1991;Weremko et al, 1997;NRC, 1998). True faecal P digestibility values (61-72%) associated WM for growing pigs measured in this study are much higher than the apparent P digestibility and P availability previously reported (Jongbloed et al, 1991;Weremko et al, 1997;NRC, 1998). Thus, the regression Table 3 Comparison of faecal endogenous phosphorus losses (g/kg DM intake) associated with soybean meal and wheat middling for growing pigs measured by the regression analysis method (RM) and the substitution method (SM) at different substitution levels a analysis technique and the substitution method may be used for measuring true P digestibility in feed ingredients for pigs.…”

Section: Discussioncontrasting

confidence: 46%

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Comparison of the regression analysis technique and the substitution method for the determination of true phosphorus digestibility and faecal endogenous phosphorus losses associated with feed ingredients for growing pigs

et al. 2007

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Section: Discussioncontrasting

confidence: 46%

Section: Discussioncontrasting

confidence: 46%

Comparison of the regression analysis technique and the substitution method for the determination of true phosphorus digestibility and faecal endogenous phosphorus losses associated with feed ingredients for growing pigs

et al. 2007

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“…Therefore, efforts are made to increase availability such as the addition of phytase. In various productive animal species, it has been shown that the apparent digestibility of more water-soluble P sources such as monocalcium phosphate tends to be higher than that of less water soluble P salts such as dicalcium phosphate (Eya & Lovell, 1997;Gillis, Norris, & Heuser, 1948;Jongbloed, Everts, & Kemme, 1991). P which is bound to phytate is not soluble in water and therefore less available for monogastric animals (i.e., pigs and poultry; Kiarie & Nyachoti, 2009 ;Rodehutscord, 2001).…”

mentioning

confidence: 99%

A pilot study on in vitro solubility of phosphorus from mineral sources, feed ingredients and compound feed for pigs, poultry, dogs and cats

Lineva

Kirchner

Kienzle

et al. 2018

Animal Physiology Nutrition

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Excess phosphorus (P) as seen in cat foods can have a negative effect on health (Dobenecker, Webel, Reese, & Kienzle, ; Pastoor, Klooster, Mathot, & Beynen, ). P surpluses may affect the environment, and economics in food producing animals, whereas marginal supply may impair performance and health. P can only be absorbed if it is soluble. Solubility of feed P in water and weak acid solution—as a precondition for absorption—was investigated in feed for dogs, cats, pigs and poultry. Different P containing mineral compounds (Ca(H2PO4)2, CaHPO4•2H2O, Ca4Na(PO4)3, KH2PO4, K4P2O7, NaH2PO4, Na5P3O10 (29 samples), as well as eight different ingredients such as wheat or meat, 64 compound feeds for pig and poultry, eight complete dry and 13 complete moist dog foods, 25 complete moist cat foods and 29 experimental diets were analysed for P solubility. Finely ground feeds were soaked in water or hydrochloric acid (0.4%) for 1 and 90 min. The samples were centrifuged and the supernatant was analysed for P (photometric vanadate molybdate method after wet ashing). The solubility of P from inorganic sources reflected the solubility of the main compound of the feed grade material. “organic” ingredients, such as fish meal or meat, showed a lower P solubility than inorganic sources. Most ingredients from animal origin (exception fish meal) had a higher P solubility than those from plant origin. When inorganic and “organic” P sources were mixed, the P solubility of the mixture reflected the P solubility and percentages of its compounds. In chicken, turkey and pig compound feed the percentage of acid soluble P increased with increasing P content. Pet moist food showed high percentages of water‐soluble P. The results show that the method is suitable to obtain data on water and acid solubility of P in feed and ingredients.

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“…Using the P-free diet, an estimate of EPL at 139 mg/kg of DMI was also reported by Petersen and Stein (2006). Jongbloed et al (1991) indicated that EPL is decreased when P intake is lower than the requirements for P. However, dietary concentration of P being lower than the requirements of the animal is a fundamental condition needed for using regression approach (Poulsen et al, 1999; Fan et al, 2001; Dilger and Adeola, 2006). Taken together, accurate EPL is not an essential requirement for reliable estimate of regression-derived TTTD of P in test feedstuffs.…”

Section: Discussionmentioning

confidence: 89%

Casein Supplementation Does Not Affect the Estimates of True Total Tract Digestibility of Phosphorus in Soybean Meal for Growing Pigs Determined by the Regression Method

Liu

Adeola

2016

Asian Australas. J. Anim. Sci

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Forty-eight barrows with an average initial body weight of 25.5±0.3 kg were assigned to 6 dietary treatments arranged in a 3×2 factorial of 3 graded levels of P at 1.42, 2.07, or 2.72 g/kg, and 2 levels of casein at 0 or 50 g/kg to compare the estimates of true total tract digestibility (TTTD) of P in soybean meal (SBM) for pigs fed diets with or without casein supplementation. The SBM is the only source of P in diets without casein, and in the diet with added casein, 1.0 to 2.4 g/kg of total dietary P was supplied by SBM as dietary level of SBM increased. The experiment consisted of a 5-d adjustment period and a 5-d total collection period with ferric oxide as a maker to indicate the initiation and termination of fecal collection. There were interactive effects of casein supplementation and total dietary P level on the apparent total tract digestibility (ATTD) and retention of P (p<0.05). Dietary P intake, fecal P output, digested P and retained P were increased linearly with graded increasing levels of SBM in diets regardless of casein addition (p<0.01). Compared with diets without casein, there was a reduction in fecal P in the casein-supplemented diets, which led to increases in digested P, retained P, ATTD, and retention of P (p<0.01). Digested N, ATTD of N, retained N, and N retention were affected by the interaction of casein supplementation and dietary P level (p<0.05). Fecal N output, urinary N output, digested N, and retained N increased linearly with graded increasing levels of SBM for each type of diet (p<0.01). The estimates of TTTD of P in SBM, derived from the regression of daily digested P against daily P intake, for pigs fed diets without casein and with casein were calculated to be 37.3% and 38.6%, respectively. Regressing daily digested N against daily N intake, the TTTD of N in SBM were determined at 94.3% and 94.4% for diets without casein and with added casein, respectively. There was no difference in determined values of TTTD of P or N in SBM for pigs fed diets with or without casein (p>0.05). In summary, our results demonstrate that the estimates of TTTD of P in SBM for pigs were not affected by constant casein inclusion in the basal diets.

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Phosphorus Availability and Requirements in Pigs

Cited by 30 publications

References 18 publications

Comparison of the regression analysis technique and the substitution method for the determination of true phosphorus digestibility and faecal endogenous phosphorus losses associated with feed ingredients for growing pigs

Comparison of the regression analysis technique and the substitution method for the determination of true phosphorus digestibility and faecal endogenous phosphorus losses associated with feed ingredients for growing pigs

A pilot study on in vitro solubility of phosphorus from mineral sources, feed ingredients and compound feed for pigs, poultry, dogs and cats

Casein Supplementation Does Not Affect the Estimates of True Total Tract Digestibility of Phosphorus in Soybean Meal for Growing Pigs Determined by the Regression Method

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