Influence of Steam Pelleting and Dietary Calcium Level on the Utilization of Phosphorus by the Pig

Bayley, H. S.; Pos, J.; Thomson, RG

doi:10.2527/jas1975.405857x

Cited by 18 publications

(6 citation statements)

References 6 publications

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“…Pelleting may, on the other hand, have a positive effect on the digestibility of P. Bayley et al (1975) have reported improved P absorption due to steam pelleting. It is interesting to note that such an improvement was found only in diets not supplemented with inorganic P. The pelleting temperature, however, was not mentioned.…”

Section: Ns Nsmentioning

confidence: 99%

Inclusion of wheat bran in barley-soybean meal diets with different phosphorus levels for growing-finishing pigs I. Effects on nutrient digestibility and mineral balances in finishing pigs

Helander

Näsi

Partanen

1994

AFSci

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The effect of the intrinsic phytase of wheat bran (WB) on phytin-phosphorus availability to pigs on barley-soybean meal diets was measured in a digestibility and balance experiment using a 2x3 factorial arrangement in a 6x5 cyclic change-over design. The factors were WB inclusion (0 or 100 g per kg, later referred to as WB- and WB+, respectively) and three phosphorus (P) levels: high (HP), medium (MP) and low (LP). The inclusion of WB in the diet did not significantly improve dietary P utilization. However, the absorption and retention of P appeared to be slightly improved by WB inclusion in the LP diet. This improvement may be due to WB phytase. The effects of WB on the digestibility and balance of other minerals remained relatively small. The P level, on the other hand, had a greater effect on mineral balances. Ash digestibility was not affected by the treatments. Dry matter and organic matter digestibilities were impaired when WB was included in the diet. N absorption of intake was higher (p

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Section: Ns Nsmentioning

confidence: 99%

Inclusion of wheat bran in barley-soybean meal diets with different phosphorus levels for growing-finishing pigs I. Effects on nutrient digestibility and mineral balances in finishing pigs

Helander

Näsi

Partanen

1994

AFSci

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“…However, processing conditions in these studies seem more severe (150°C), where even nonenzymatic hydrolysis may occur. In a later study, however, Bayley et al (1975) found no significant effect of steam pelleting on either Ca, intrinsic P or inorganic P. Correspondingly, Trotter and Allee (1979) also concluded that steam pelleting has only a small effect on P availability for finishing pigs.…”

Section: Discussionmentioning

confidence: 90%

Soaking and pelleting of pig diets alters the apparent absorption and retention of minerals

Larsen¹,

Skoglund²,

Sandberg³

et al. 1999

Can. J. Anim. Sci.

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. 1999. Soaking and pelleting of pig diets alters the apparent absorption and retention of minerals. Can. J. Anim. Sci. 79: 477-483. The effect of soaking a pig's diet in water (9 h at room temperature) or heat pelleting (81°C) on apparent absorption and retention of intrinsic minerals was studied with and without the addition of calcium carbonate in a 2 × 3 factorial design. Thirty pigs were allocated to different diet treatments and two separate balances were calculated throughout a 33-d study. Soaking the diet significantly (P < 0.001) reduced the phytate content (IP 6 ) and increased (P < 0.001) the fractional content of degradation products (IP 3-5 ), whereas heat pelleting only marginally affected these compounds. Soaking and heat pelleting of feeds did not affect dry matter (DM) digestibility or N and S balances in the animals (P > 0.05), indicating that feed matrix remained unaltered by the treatments. Dietary Ca addition reduced the absorption coefficient of DM (P < 0.01), ash (P < 0.001) and Ca (P < 0.05) as well as the uptake of P (P < 0.001). Heat pelleting selectively reduced the uptake of feed Ca, Fe, Zn, Cu, and Mn compared with untreated and soaked diets (P < 0.05). In conclusion, heat pelleting of feeds showed a negative effect on mineral uptake, whereas the soaking procedure seemed to have only a very marginal positive (P > 0.05) effect on the uptake of elements in the digestive tract.Key words: Heat pelleting, soaking, inositol phosphates, phytate, calcium, trace elements Larsen, T., Skoglund, E., Sandberg, A.-S. et Engberg, R. M. 1999. Le trempage et l'agglomération des aliments pour porcs modifient l'absorption et la rétention apparentes des minéraux. Can. J. Anim. Sci. 79: 477-483. Nous avons étudié au moyen d'un dispositif factoriel 2 × 3 l'effet du trempage dans l'eau (9 h à la température de la pièce) ou de l'agglomération à la chaleur (81°C) des aliments pour porc sur l'absorption et sur la rétention apparentes des minéraux intrinsèques, avec et sans ajout de carbonate de calcium. Trente cochettes étaient réparties au hasard entre les divers régimes d'alimentation et deux bilans séparés étaient calculés durant les 33 jours qu'a duré l'expérience. Le trempage de l'aliment a causé une réduction (P < 0,001) de la teneur en phytate (IP 6 ) et un accroissement (P < 0,001) de la proportion de produits de dégradation (IP 3-5 ). De son côté, l'agglomération à la chaleur n'avait qu'un effet négligeable sur ces substances. Aucun des deux traitements n'a eu d'effet sur la digestibilité de m.s. ni sur les bilans de l'azote et du soufre chez les animaux (P > 0,05), ce qui laisse supposer que la structure des aliments n'a pas été modifiée. L'apport de calcium (Ca) de source alimentaire a eu pour effet d'abaisser le coefficient d'absorption de m.s. (P < 0,01) des cendres (P < 0,001) et de Ca (P < 0,05) ainsi que de réduire l'absorption de P (P < 0,001). L'agglomération à la chaleur réduisait significativement l'absorption de Ca, Fe, Zn, Cu et Mn de l'aliment par rapport à l'aliment témoin et à l'alime...

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“…It is possible to investigate how growth and feed conversion react to increasing quantities of phosphorus in the feed and in this way determine the optimal quantity of phosphorus. Even then the rations can be composed in various ways: it is possible to vary the phosphorus level while calcium remains at one or more constant levels (Bayley et al, 1971;Cromwell et al, 1970;Miller et al, 1964;Bayley & Thomson, 1969;Bayley et al, 1975a). But it is also possible, as was done during the study under discussion, to choose one or more constant Ca/P rations for all phosphorus levels Mudd et al, 1969;Schroeder et al, 1974;Bunch et al, 1969aBunch et al, , 1969b.…”

Section: Discussionmentioning

confidence: 99%

The influence of the phosphorus and calcium content of feeds on growth, feed conversion and slaughter quality, and on the chemical, mechanical and histological parameters of the bone tissue of pigs.

Kempen¹,

Kerk²,

Grimbergen³

1976

NJAS

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In a 2 X 4 factorial experiment on 96 individually housed pigs, 2 calcium/phosphorus ratios (1.3 and 1.9) and 4 phosphorus levels (0.4, 0.5, 0.6, 0.7% total P) were tested. The influence of the treatments on growth, feed conversion and slaughter quality was measured. The experiment showed the 1.3 Ca/P ratio to be more favourable than the 1.9 ratio. A P content of 0.6% was sufficient for good growth and favourable feed conversion. The quality of the bone tissue, for which the specific response resistance to distortion and breaking was used as a standard, was close to maximum when P in the feed was 0.6%. The strength of the whole bone, measured as the bending moment for distortion and breaking, was greatest when P was highest; mineralization of the bone also showed a further increase when the P content in the feed increased from 0.6 to 0.7%.During the experiment only a few cases of leg weakness were noted; these occurred throughout all the experimental treatments. On the basis of the results, the P and Ca requirements for optimal growth and feed conversion for the modern Dutch pig are 0.6% and 0.78%. More of these minerals in the feed may, however, increase deposition in the skeleton. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Influence of Steam Pelleting and Dietary Calcium Level on the Utilization of Phosphorus by the Pig

Cited by 18 publications

References 6 publications

Inclusion of wheat bran in barley-soybean meal diets with different phosphorus levels for growing-finishing pigs I. Effects on nutrient digestibility and mineral balances in finishing pigs

Inclusion of wheat bran in barley-soybean meal diets with different phosphorus levels for growing-finishing pigs I. Effects on nutrient digestibility and mineral balances in finishing pigs

Soaking and pelleting of pig diets alters the apparent absorption and retention of minerals

The influence of the phosphorus and calcium content of feeds on growth, feed conversion and slaughter quality, and on the chemical, mechanical and histological parameters of the bone tissue of pigs.

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