The Effects of Triticale Substitution in Corn-Based Diets under Reared the Different Photoperiod Lengths on Broilers Growth Performance
2016
Baser, Eyup | Yeti̇si̇r, Ramazan
This study was carried out to determine the effect of different levels of triticale substitution in corn diets under the different photoperiod lengths (PL) would have a detrimental effect of broilers growth performance. The experiment used a completely randomized design with a 3x4 factorial arrangement of treatments consisting of three dietary triticale levels (0% -T0, 50% -T50 and 100% -T100) fed from 0 to 42 d and under four photoperiod length programs (Continuous - CON, Intermittent - INT, Increasing - INC, Decreasing - DEC). A total of 960, one-day-old, sexed Ross 308 broilers were used in total 48 groups at 4 lighting rooms divided into12 floor pens with four replicates. Average body weight (BW), feed intake (FI) and feed conversion ratio (FCR) were determined weekly. A significant interaction (P<0.01) between triticale substitution levels and PL was observed. INC-TO lighting schedule caused initially growth delay but over time can exhibit compensatory gain and shown that those BW 5.7% exceed the control group of CON-TO at 6 wk. However, the BW of CON-T50 and CON-T100 birds 5 and 35% lighter and had consumed 13 and 35% less feed than birds CON-T0 respectively by the end of 6 wk. Mortality rate was not affected by treatments. As a result, dietary triticale replacement at 50% or 100% of corn under CON, INT, INC and DEC photoperiod lengths negatively affected BW, FI and FCR for the entire starter and grower period (1-4 wk.) (P<0.01).
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