Processing Procedures and Feeding Systems for Sorghum-based Diets Given to Lactating Sows

Kim, I.H.;Hancock, J.D.;Kim, J.H.;Kennedy, G.A.;Hines, R.H.;Behnke, K.C.;Nichols, D.A.

  • Received : 2001.12.13
  • Accepted : 2002.03.13
  • Published : 2002.08.01


One hundred and twenty nine primiparous sows were used to determine the effects of alternative processing procedures and feeding systems on the nutritional value of sorghum grain-based diets for lactating sows. Treatments were a ground sorghum control, steam-flaked sorghum and extruded sorghum fed in meal form and the ground sorghum control given as pellets or gruel (1:1 ratio of water and feed on a volume:volume basis). Average daily feed intake was greater for sows fed pelleted and gruel diet forms than sow fed the diets with steam-flaked and extruded sorghum (p<0.04). However, no differences occurred in sow weight or backfat losses among the treatments (p>0.14). Number of pigs weaned and livability rates were similar among treatments except that steam-flaked sorghum supported greater litter weight gains than extruded sorghum (p<0.02). Apparent digestibilities of DM, N and GE in sows fed steam-flaked and extruded sorghum were greater (p<0.001) than in sows fed pelleted or gruel diets. Of the various treatments, sows fed extruded sorghum tended to have the highest digestibilities of DM, N and GE, and lowest excretions of DM and N in the faeces. Severity of ulceration was not significantly affected by treatments (p>0.35), but keratinization was greatest for sows fed extruded sorghum (p<0.01). In conclusion, the alternative processing methods (steam-flaking and extrusion) and feeding system (pellets and gruel) had little effect on sow and litter performance. However, nutrient digestibilities were improved for all treatments that involved heating (steam flaking, extrusion and pelleting) and, thus, these treatments resulted in less fecal excretion of DM and N.




  1. Hancock, J. D., R. H. Hines and T. L. Gugle. 1991. Extrusion of sorghum, soybean meal, and whole soybeans improves growth performance and nutrient digestibility in finishing pigs. Kansas Agri. Exp. Sta. Rep. Prog. No. 641. p. 92.
  2. Mahan, D. C., R. A. Pickett, T. W. Perry, T. M. Curtin, W. R. Featherson and W. M. Beeson. 1966. Influence of various nutritional factors and physical form of feed on esophagogastric ulcers in swine. J. Anim. Sci. 25:1019-1023.
  3. NRC. 1998. Nutrient Requirements of Swine (10th Ed.). National Academy Press, Washington, DC.
  4. Nuwer, A. J., T. W. Perry, R. A. Pickett, W. R. Featherston, T. M. Curtin and W. M. Beeson. 1964. Effect of heat processing of various corn fractions on occurrence of ulcers in swine. J. Anim. Sci. 23:887(Abstr.).
  5. Reese, D. E., B. D. Moser, E. R. Peo, Jr., A. J. Lewis, D. R. Zimmerman, J. E. Kinder and W. W. Stroup. 1982. Influence of energy intake during lactation on the interval from weaning to first estrus in sows. J. Anim. Sci. 55:590-598.
  6. SAS. 1988. SAS/STAT User's Guide (Release 6.03 Ed.). SAS Inst., Inc., Cary, NC.
  7. Wondra, K. J., J. D. Hancock, K. C. Behnke, R. H. Hines and C. R. Stark. 1995a. Effects of particle size and pelleting on growth performance, nutrient digestibility, and stomach morphology in finishing pigs. J. Anim. Sci. 73:757-763.
  8. AOAC. 1990. Official Methods of Analysis (15th Ed.). Association of Official Analytical Chemists, Arlington, VA.
  9. NSIF. 1987. Guidelines for Uniform Swine Improvement Programs. p 10-2. National Swine Improvement Federation, Des Moines, IA.
  10. Noland, P. R., D. R. Campbell, R. K. Cage, Jr., R. N. Sharp and Z. B. Johnson. 1976. Evaluation of processed soybeans and grains in diets for young pigs. J. Anim. Sci. 43:763-769.
  11. Brooks, P. H. and D. J. A. Cole. 1972. Studies in sow reproduction 1. The effect of nutrition between weaning and remating on the reproductive performance of primiparous sows. Anim. Prod. 15:259-264.
  12. Williams, C. H., D. J. David and O. Iismaa. 1962. The determination of chromic oxide in feces samples by atomic absorption spectrophotometry. J. Agric. Sci. 59:381-385.
  13. O'Grady, J. F., F. W. H. Elsley, R. M. MacPherson and I. McDonald. 1973. The response of lactating sows and their litters to different dietary energy allowances. 1. Milk yield and composition, reproductive performance of sows and growth rate of litters. Anim. Prod. 17:65-74.
  14. King, R. H. and I. H. Williams. 1984a. The effect of nutrition on the reproductive performance of first-litter sows. 1. Feeding level during lactation, and between weaning and mating. Anim. Prod. 38:241-247.
  15. Pocock, E. F., H. S. Bayley and C. K. Roe. 1968. Relationship of pelleted, autoclaved and heat-expanded corn or starvation to gastric ulcers in swine. J. Anim. Sci. 27:1296-1301.
  16. Allee, G. L. 1976. Effect of processing methods on nutritional value of milo for weaned pigs. J. Anim. Sci. 43:248(Abstr.).
  17. Wondra, K. J., J. D. Hancock, G. A. Kennedy, R. H. Hines and K. C. Behnke. 1995b. Reducing particle size of corn in lactation diets from 1,200 to 400 micrometers improves sow and litter performance. J. Anim. Sci. 73:421-426.
  18. Hines, R. H., J. D. Hancock, G. E. Fitzner, T. L. Weeden and T. L. Gugle. 1990. Effect of extrusion on the nutritional value of soybeans and sorghum grain in finishing pigs. Kansas Agri. Exp. Sta. Rep. Prog. No. 610. p. 76.
  19. Ricker, J. T., III, T. W. Perry, R. A. Pickett and T. M. Curtin. 1967. Influence of various grains on the incidence of esophagogastric ulcers in swine. J. Anim. Sci. 26:731-735.
  20. King, R. H. and I. H. Williams. 1984b. The effect of nutrition on the reproductive performance of first-litter sows. 2. Protein and energy intakes during lactation. Anim. Prod. 38:249-256.
  21. Brendemuhl, J. H., A. J. Lewis and E. R. Peo, Jr. 1987. Effect of protein and energy intake by primiparous sows during lactation on sow and litter performance and sow serum thyroxine and urea concentrations. J. Anim. Sci. 64:1060-1069.
  22. King, R. H., M. S. Toner, H. Dove, C. S. Atwood and W. G. Brown. 1993. The response of first-litter sows to dietary protein level during lactation. J. Anim. Sci. 71:2457-2463.
  23. Muggenburg, B. A., S. H. McNutt and T. Kowalczyk. 1964. Pathology of gastric ulcers in swine. Am. J. Vet. Res. 25:1354-1357.
  24. Chamberlain, C. C., G. M. Merriman, E. R. Lidvall and C. T. Gamble. 1967. Effects of feed processing method and diet form on the incidence of esophagogastric ulcers in swine. J. Anim. Sci. 26:72-75.
  25. Perry, T. W., A. A. Jimenez, J. E. Shively, T. M. Curtin, R. A. Pickett and W. M. Beeson. 1963. Incidence of gastric ulcers in swine. Science 139:349-350.