2014
DOI: 10.9775/kvfd.2014.11186
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Broilerlerde Fotoperyod Uzunluğunun Performans Parametreleri, Karkas Özellikleri ve Heterofil/Lenfosit Oranı Üzerine Etkisi

Abstract: This study was conducted to assess the effects of photoperiod length [Continuous lighting (24L:0D): 24 Lightness:0 Darkness; Constant lighting (16L:8D): 16 Lightness:8 Darkness; Self-photoperiod (SP): 24 Lightness: free choice Darkness] on the performance, carcass characteristics and heterophil/lymphocyte ratio of male broilers grown to 42 d of age. A total of 180 Ross 308 males were exposed to one of the three lighting programmes: 16L:8D; 24L:0D and SP. In the self-photoperiod group, the percentage of animals… Show more

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Cited by 1 publication
(2 citation statements)
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“…Similarly, in other studies the effect of photoperiod on FCR was found to be statistically not significant [4,11,13,17,20] . There was photoperiod length x light intensity interaction on BW of broilers at different periods of growth, except for 36 d. As Downs et al [4] , Lien et al [11] , Çoban et al [21] reported that the photoperiod length has no statistically significant effects on mortality. It might be arised from the genetic selection of metabolic and skeletal disorders.…”
Section: Resultsmentioning
confidence: 88%
See 1 more Smart Citation
“…Similarly, in other studies the effect of photoperiod on FCR was found to be statistically not significant [4,11,13,17,20] . There was photoperiod length x light intensity interaction on BW of broilers at different periods of growth, except for 36 d. As Downs et al [4] , Lien et al [11] , Çoban et al [21] reported that the photoperiod length has no statistically significant effects on mortality. It might be arised from the genetic selection of metabolic and skeletal disorders.…”
Section: Resultsmentioning
confidence: 88%
“…Similar results were reported in some studies carried out in broilers in which the effect of photoperiod on H/L ratio were statistically nonsignificant [11] . However, Coban et al [21] had recorded lower H/L ratio in 16L:8D photoperiod group than counterparts subjected to continuous lighting (P<0.001).…”
Section: Discussionmentioning
confidence: 89%