title: Effects of including raw or extruded field peas (Pisum sativum L.) in diets fed to weanling pigs.
abstract: BACKGROUND
  There is limited information about the response to field peas fed to weanling pigs. Two experiments were therefore conducted to investigate effects of including increasing levels of field peas in weanling pig diets.
  
  
  RESULTS
  In Experiment 1, a reduction (linear, P < 0.05) in average daily gain (551, 574, 541, 548, 512 and 533 g d(-1)) was observed in response to increasing levels of raw field peas (0, 120, 240, 360, 480 and 600 g kg(-1)) in diets fed from day 14 to 42 post weaning. In Experiment 2, the inclusion of raw field peas (0, 245 or 490 g kg(-1)) in the diets reduced (linear, P < 0.05) feed intake from day 14 to 39 post weaning, but average daily gain and gain:feed were unaffected by the use of raw field peas. The response to extruded field peas was not different from that to raw field peas.
  
  
  CONCLUSIONS
  Up to 360 g kg(-1) raw field peas may be included in nursery diets without negatively influencing pig growth performance provided that diets are balanced for indispensable amino acids. Results from this work do not support any advantage of extruding the field peas.
authors.affiliation: Department of Animal Sciences, University of Illinois, Urbana, IL 61801, USA. hstein@illinois.edu
authors.forename: Hans H
authors.initials: HH
authors.lastname: Stein
authors.forename: Dean N
authors.initials: DN
authors.lastname: Peters
authors.forename: Beob G
authors.initials: BG
authors.lastname: Kim
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000601:Amino Acids, Essential / Q000008:administration & dosage / Q000032:analysis; D000821:Animal Feed / Q000032:analysis*; D000822:Animal Husbandry / Q000379:methods; D000818:Animals; D004032:Diet / Q000009:adverse effects / Q000662:veterinary*; D005260:Female; D005511:Food Handling / Q000379:methods*; D006358:Hot Temperature; D008297:Male; D018532:Pisum sativum / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry*; D034421:Sus scrofa / Q000254:growth & development*; D014361:Trypsin Inhibitors / Q000032:analysis; D014364:Tryptophan / Q000008:administration & dosage / Q000032:analysis; D014886:Weaning; D015430:Weight Gain
chemical_list: D000596:Amino Acids; D000601:Amino Acids, Essential; D014361:Trypsin Inhibitors; D014364:Tryptophan