PMID- 22700511 OWN - NLM STAT- MEDLINE DCOM- 20120823 LR - 20231213 IS - 0032-5791 (Print) IS - 0032-5791 (Linking) VI - 91 IP - 7 DP - 2012 Jul TI - Effects of diet type and ingredient composition on rate of passage and apparent ileal amino acid digestibility in broiler chicks. PG - 1647-53 LID - 10.3382/ps.2012-02173 [doi] AB - This experiment evaluated rate of passage (ROP) and apparent ileal amino acid digestibility (AIAAD) of 4 diets varying in ingredient composition fed to broilers from 14 to 22 d of age. Two hundred and 88 Ross x Ross 708 chicks (12 birds per cage; 0.45 m(2) per bird) were randomly assigned to 24 cages (6 replicate cages per treatment) at 1 d of age. Experimental diets were 1) corn-soybean meal-based (CSM) diet containing porcine meat and bone meal (MBM; 5% inclusion), 2) CSM diet containing distillers dried grains with solubles (DDGS; 5% inclusion), 3) semipurified (SP) diet containing MBM (38% inclusion), and 4) SP diet containing DDGS (76% inclusion). Diets were formulated to contain 20% CP and were adequate for vitamins and minerals. Experimental diets were provided from d 14 to 22. On d 18, a total excreta collection was conducted every hour for 12 h from 0800 to 1900 h to determine ROP, and AIAAD was determined on d 22. Time of 1% TiO(2) excretion (T1), 50% TiO(2) excretion (T50), and mean retention time (MRT) were used to express ROP. The SP-MBM diet reached T1 (P < 0.05) faster than the SP-DDGS or 2 CSM diets. However, T50 indicated a faster (P < 0.05) ROP for SP-DDGS than the 2 CSM diets, and no significant difference was observed between the 2 SP diets. The MRT of the SP-DDGS diet (5.13 h) was less (P < 0.05) than the MRT of the SP-MBM, CSM-MBM, and CSM-DDGS diets, which resulted in values of 5.48, 5.62, and 5.58 h, respectively. In general, the AIAAD values were higher (P < 0.05) for the 2 CSM diets than for SP diets. Except for His, no statistical differences were observed between the AIAAD of the 2 CSM diets. Comparing the 2 SP diets, AIAAD was usually similar or higher (P < 0.05) for SP-DDGS, except for His, Lys, and Gly, which were higher (P < 0.05) for SP-MBM. Based on T50 and MRT, SP diets containing DDGS had a faster ROP in broilers than CSM diets or SP diets containing MBM. FAU - Rochell, S J AU - Rochell SJ AD - Department of Poultry Science, Auburn University, Auburn, AL 38649, USA. FAU - Applegate, T J AU - Applegate TJ FAU - Kim, E J AU - Kim EJ FAU - Dozier, W A 3rd AU - Dozier WA 3rd LA - eng PT - Journal Article PT - Randomized Controlled Trial PL - England TA - Poult Sci JT - Poultry science JID - 0401150 RN - 0 (Amino Acids) SB - IM MH - Amino Acids/*metabolism MH - Animal Feed/*analysis MH - Animal Nutritional Physiological Phenomena MH - Animals MH - Chickens/*physiology MH - Diet/*veterinary MH - Digestion/*drug effects/physiology MH - Gastrointestinal Transit MH - Ileum/*physiology MH - Glycine max MH - Zea mays EDAT- 2012/06/16 06:00 MHDA- 2012/08/24 06:00 CRDT- 2012/06/16 06:00 PHST- 2012/06/16 06:00 [entrez] PHST- 2012/06/16 06:00 [pubmed] PHST- 2012/08/24 06:00 [medline] AID - S0032-5791(19)40293-9 [pii] AID - 10.3382/ps.2012-02173 [doi] PST - ppublish SO - Poult Sci. 2012 Jul;91(7):1647-53. doi: 10.3382/ps.2012-02173.