PMID- 14552376 OWN - NLM STAT- MEDLINE DCOM- 20040129 LR - 20170908 IS - 0021-8812 (Print) IS - 0021-8812 (Linking) VI - 81 IP - 10 DP - 2003 Oct TI - Effect of carbohydrate source on growth performance, carcass traits, and meat quality of growing-finishing pigs. PG - 2488-95 AB - Two experiments were conducted to determine the effect of substituting a more available dietary carbohydrate (CHO) for portions of corn or fat in the diet on growth performance, carcass traits, meat quality, and serum or plasma metabolites in growing-finishing pigs. A three-phase feeding program was used with corn-soybean meal diets formulated to provide 105% of the Lys requirement for barrows or gilts gaining 325 g of lean daily in Exp. 1 or gilts gaining 350 g of lean daily in Exp. 2. Diets were isoenergetic within experiments. All other nutrients met or exceeded suggested requirements. In Exp. 1, pigs were allotted to three dietary treatments (0, 7.5, or 15.0% sucrose), with three replications of barrows and three replications of gilts, and with three or four pigs per replicate pen; average initial and final BW were 25.2 and 106.7 kg. In Exp. 2, gilts were allotted to two dietary treatments (waxy [high amylopectin] or nonwaxy [75% amylopectin and 25% amylose] corn as the grain source), with five replications of four gilts per replicate pen; average initial and final BW were 37.7 and 100.0 kg. In Exp. 1, ADG and gain:feed ratio increased linearly (P < 0.02) as dietary sucrose increased. Minolta color scores, a* and b*, and drip loss (P < 0.06) also increased linearly with added sucrose. In Exp. 2, ADG, carcass weight and length, and the Minolta a* value were greater for pigs fed waxy corn (P < 0.08) than for those fed nonwaxy corn. Feed intake, longissimus muscle area, 10th-rib and average backfat thickness, dressing percentage, fat-free lean, percentage of lean and muscling, lean gain per day, total fat, percentage fat, lean:fat ratio, serum or plasma metabolites (Exp. 1: serum urea N; Exp. 2: serum urea N, and plasma nonesterified fatty acids, triacylglycerols, total and high-density lipoprotein cholesterol, insulin, and total protein), pH of the longissimus muscle, and subjective muscle scores (color, firmness-wetness, and marbling) were not affected by diet in either experiment. In summary, increasing availability of dietary CHO in growing-finishing pig diets improved growth performance, but it did not affect carcass traits. FAU - Camp, L K AU - Camp LK AD - Department of Animal Sciences, Louisiana State University Agricultural Center, Baton Rouge, Louisiana 70803-4210, USA. FAU - Southern, L L AU - Southern LL FAU - Bidner, T D AU - Bidner TD LA - eng PT - Journal Article PL - United States TA - J Anim Sci JT - Journal of animal science JID - 8003002 RN - 0 (Dietary Carbohydrates) SB - IM MH - Adipose Tissue/metabolism MH - *Animal Feed MH - Animals MH - Biological Availability MH - *Body Composition MH - Dietary Carbohydrates/*administration & dosage/pharmacology MH - Dose-Response Relationship, Drug MH - Female MH - Hydrogen-Ion Concentration MH - Male MH - Meat/*standards MH - Muscle, Skeletal/metabolism MH - Random Allocation MH - Swine/blood/*growth & development MH - Weight Gain/drug effects MH - Zea mays/chemistry EDAT- 2003/10/14 05:00 MHDA- 2004/01/30 05:00 CRDT- 2003/10/14 05:00 PHST- 2003/10/14 05:00 [pubmed] PHST- 2004/01/30 05:00 [medline] PHST- 2003/10/14 05:00 [entrez] AID - 10.2527/2003.81102488x [doi] PST - ppublish SO - J Anim Sci. 2003 Oct;81(10):2488-95. doi: 10.2527/2003.81102488x.