Effect of dietary fiber levels on performance, gizzard development, intestinal morphology, and nutrient utilization in meat ducks from 1 to 21 days of age

• DOI: 10.3382/ps/pex268
• Publication Date: 2017-10-10T16:46:42Z
• Authors: H Y Han; K Y Zhang; X M Ding; S P Bai; Y H Luo; J P Wang; Q F Zeng
• Keywords: Gizzard; Starter

The objective of this experiment was to determine the effects dietary fiber levels on growth performance, gizzard development, intestinal morphology, and nutrient utilization in Cherry Valley meat ducks. In total, 720 1-day-old ducklings were fed with starter diets (120 ducklings, 8 pens 15 each diet) containing 6 crude (CF, 1.46, 3.09, 4.15, 6.18, 7.52, 9.03%, based analysis) for 21 d. Then, d 22, ducks all transferred a grower diet (containing 4% CF) examine residual effect until 35 Body weight (BW), body gain (BWG), feed intake (FI), ratio (F:G) recorded/calculated weekly. Ducks sampled development morphology determination 7, 14, 21. Nutrient assessed using 25- 27-day-old results showed that BW (d 21), BWG 21, 1 F:G 35) increased quadratically (P < 0.01), FI (all periods except 22 linearly when CF from 1.46 9.03%. under 3.09% 4.15% had decreased compared other diets. When 1.46% diets, 7.52% jejunal energy retention, excreta nutrients availability, standardized ileal digestibility (SID) Arg, Ile, Leu, Thr, Val, Asp, Ala, Glu, Gly, Pro, Ser, total amino acids. conclusion, age could adapt wide range (3.09% 7.52%) levels.