title: Effects of providing a water-soluble globulin in drinking water and diet complexity on growth performance of weanling pigs.
abstract: Two experiments were conducted to evaluate the effects of providing a water-soluble globulin in the drinking water on growth performance of weanling pigs. In Exp. 1, 360 weanling pigs (5.0 +/- 1.2 kg; 17 +/- 3 d of age; PIC) were blocked by initial weight and allotted to one of six treatments in a 2 x 3 factorial arrangement. Treatments included three diet complexity regimens with or without water-soluble globulin (3 and 1.5% solutions; d 0 to 7 and d 0 to 14, respectively) provided in the drinking water. The 35-d study was divided into three phases (d 0 to 7, 7 to 14, and 14 to 35) with corresponding lysine levels of 1.6, 1.5, and 1.35%. Soybean meal replaced specialty protein and lactose sources to provide three different complexity regimens. From d 0 to 7, a water-soluble globulin x diet complexity interaction (P < 0.05) was observed for average daily gain (ADG) and gain:feed (G/F). Increasing diet complexity increased ADG and G/F for pigs provided water, whereas the medium diet complexity regimen optimized performance for pigs offered water-soluble globulin. From d 0 to 14, pigs fed the two more complex regimens had greater ADG and G/F (P < 0.01) than the pigs fed the least complex regimen. Pigs offered water-soluble globulin had decreased (P < 0.01) ADFI, but increased (P < 0.001) G/F from d 0 to 14. For overall performance (d 0 to 35), increasing diet complexity increased (P < 0.03) ADG and ADFI, whereas water-soluble globulin offered from d 0 to 14 had no effect. In Exp. 2, 360 weanling pigs (5.2 +/- 1.6 kg; 19 +/- 4 d of age) were used in a 21-d growth assay. The trial was arranged as a 2 x 3 factorial with pigs fed the low- or medium-complexity diets (Exp. 1) with water or a 3% solution of water-soluble globulin offered for 4 or 8 d after weaning. From d 0 to 4, pigs offered water-soluble globulin had increased (P < 0.001) ADG and G/F compared with pigs provided water, whereas from d 4 to 8, pigs provided water had increased (P < 0.05) ADG and G/F compared with pigs offered water-soluble globulin. Pigs fed the medium-complexity diet had increased ADG and G/F (d 4 to 8 and d 8 to 12) compared with pigs fed the low-complexity diet. From d 0 to 8 and d 0 to 21, pigs provided water-soluble globulin for 4 or 8 d after weaning had improved G/F compared with pigs provided water. Results demonstrate that providing water-soluble globulin through the water source of weanling pigs improves ADG and G/F immediately after weaning.
authors.affiliation: Department of Animal Sciences and Industry, College of Veterinary Medicine, Kansas State University, Manhattan 66506, USA.
authors.forename: M U
authors.initials: MU
authors.lastname: Steidinger
authors.forename: R D
authors.initials: RD
authors.lastname: Goodband
authors.forename: M D
authors.initials: MD
authors.lastname: Tokach
authors.forename: J L
authors.initials: JL
authors.lastname: Nelssen
authors.forename: S S
authors.initials: SS
authors.lastname: Dritz
authors.forename: B S
authors.initials: BS
authors.lastname: Borg
authors.forename: J M
authors.initials: JM
authors.lastname: Campbell
mesh_terms: D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D004305:Dose-Response Relationship, Drug; D004326:Drinking; D005916:Globulins / Q000008:administration & dosage / Q000494:pharmacology*; D007785:Lactose / Q000008:administration & dosage; D008239:Lysine / Q000008:administration & dosage / Q000494:pharmacology; D011897:Random Allocation; D030262:Soybean Proteins / Q000008:administration & dosage; D013552:Swine / Q000254:growth & development*; D013997:Time Factors; D014867:Water / Q000737:chemistry; D014886:Weaning; D015430:Weight Gain / Q000187:drug effects*
chemical_list: D005916:Globulins; D030262:Soybean Proteins; D014867:Water; D007785:Lactose; D008239:Lysine