Hostname: page-component-5c6d5d7d68-sv6ng Total loading time: 0 Render date: 2024-08-16T16:38:21.031Z Has data issue: false hasContentIssue false
  • English
  • Français

A comparison of defluorinated rock phosphate and dicalcium phosphate, in diets containing either skim milk powder or soya bean meal as the main protein supplement, for early-weaned pigs

Published online by Cambridge University Press:  02 September 2010

I. G. Partridge
I. G. Partridge
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading RG2 9AT
Get access

Abstract

Thirty-six pigs were weaned at 21 days of age and were given diets supplemented with either dicalcium phosphate (DCP) or defluorinated rock phosphate (DFP) from 4 weeks of age until slaughter at 50 kg live weight. From 4 to 9 weeks of age the diets contained either skim milk powder (SKIM) or soya bean meal (SOY) as the main protein supplement. The dietary treatments were arranged in a 2 × 2 factorial design. From 9 weeks of age until slaughter, SOY was the only protein supplement used. Four 7-day measurements of phosphorus, calcium and nitrogen balance were made on each pig. Faecal endogenous P was estimated in two pigs per treatment by the 32P dilution method.

There were no significant effects of P supplement on performance or on apparent absorption, true absorption or retention of P. The apparent absorption and retention of Ca were both 0·07 lower with DFP than with DCP in the period from 9 weeks of age to slaughter (P< 0·001).

From 4 to 9 weeks of age there was no effect of protein supplement on performance. From 9 weeks of age to slaughter, when all pigs were given SOY, those which had received SKIM in the previous period grew slightly faster (P<0·05); their growth-rate overall, from 4 weeks of age to slaughter, was also significantly better (P <0·05).

Pigs given SKIM showed a higher apparent absorption of P (P < 0·001) and higher apparent absorption (P<0·01) and retention (P<0·001) of both Ca and N from 4 to 9 weeks of age. Again, there were carry-over effects in the period from 9 weeks of age to slaughter, although the trends observed in the first period were reversed; pigs previously given SKIM showed significantly lower apparent absorption and retention of both P and Ca, and apparent absorption of N, than those previously given SOY.

There were no significant effects of dietary treatments on the ash, Ca or P content of the fourth metacarpal.

Type
Research Article
Information
Animal Production , Volume 32 , Issue 1 , February 1981 , pp. 67 - 73
Copyright
Copyright © British Society of Animal Science 1981

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Ammerman, C. B., Arrington, L. R., McCall, J. T., Feaster, J. P., Combs, G. E. and Davis, G. K. 1963. Inorganic phosphorus utilization by swine as measured by an isotope technique. J. Anim. Sci. 22: 890–893.CrossRefGoogle Scholar
Atherton, D., Thompson, A. and Smith, W. C. 1975. Calcium and phosphorus availability and utilization in the growing pig. Proc. Br. Soc. Anim. Prod. (New Series) 4: 116 (Abstr.).Google Scholar
Chamberlain, C. C. and Griffin, S. A. 1963. Sources an d levels of phosphorus for growing finishing swine. J. Anim. Sci. 22: 242 (Abstr.).Google Scholar
Combs, G. E., Osegueda, F. L., Wallace, H. D. and Ammerman, C. B. 1963. Digestibility of rations containing different sources of supplementary protein by young pigs. J. Anim. Sci. 22: 396–398.CrossRefGoogle Scholar
Futrell, V. L., Chaney, C. H. and Scott, A. 1969. Various sources of phosphorus for swine. J. Anim. Sci. 28: 142 (Abstr.).Google Scholar
Gueguen, L., Besancon, P. and Rerat, A. 1968. [Digestive utilization, kinetics of absorption and efficiency of retention of phytic phosphorus in pigs.] Annls Biol. anim. Biochim. Biophys. 8: 273–280.Google Scholar
Harmon, B. G., Cornelius, S. G., Baker, D. H. and Jensen, A. H. 1974. Efficacy of defluorinated phosphate as a supplement in swine rations. J. Anim. Sci. 39: 182–183.Google Scholar
Hays, V. W., Speer, V. C., Hartman, P. A. and Catron, D. V. 1959. The effect of age and supplemental amino acids on the utilization of milk and soya protein by the young pig. J. Nutr. 69: 179–184.CrossRefGoogle ScholarPubMed
Müller, H. L., Kellner, B. B. and Kirchgessner, M. 1973. [Digestibility and convertible energy of pig rations containing varying amounts and sources of protein.] Arch. Tiererndhr. 23: 581–594.Google Scholar
Newman, C. W. and Elliott, D. O. 1976. Source and level of phosphorus for growing-finishing swine. J. Anim. Sci. 42: 92–98.CrossRefGoogle ScholarPubMed
Partridge, I. G. 1980. Mineral nutrition of the pig. Proc. Nutr. Soc. 39: 185–192.CrossRefGoogle ScholarPubMed
Prokop, V. and Koukol, O. 1973. [Digestibility of nitrogen and the main amino acids in some feeds for early weaned piglets.] Živǒcišná Výroba 18: 281–288.Google Scholar
Van Zante, R. H., Ross, C. V. and Tribble, L. F. 1967. Phosphorus from various sources for young pigs. J. Anim. Sci. 26: 912 (Abstr.).Google Scholar
Whittemore, C. T., Smith, W. C. and Thompson, A. 1972. The availability and absorption of calcium and phosphorus in the young growing pig. Anim. Prod. 15: 265–271.Google Scholar