Cumulative effect of phytase and vitamin D supplementation on performance and bone mineralization in broiler

Yıl 2015, Cilt: 31 Sayı: 2, 102 - 108, 01.06.2015

Saeed Ahmed Muhammad Mehran Anjum Khalique Khalid Javed Abdur Rahman Sajid Umar Sami Ullah

Öz

Aim: The aim of the study was to determine the efficacy of phytase and vitamin D supplementation in low phosphorous diet on performance and bone mineralization in broiler. Materials and Methods: A total of 240 one-day-old broiler chicks were divided into 8 groups (A, B, C, D, E, F, G and H) with 3 subgroups in each, comprising 10 birds in each subgroup. Group A was fed normal basal diet having normal phosphorous ratio (Control) and group B was fed diet without inorganic phosphorous and phytase supplementation (Negative control). Group C, D E were offered diet containing only three levels of phytase (250, 500, 750 phytase unit (FTU)/kg feed) and group F, G and H were offered diets having three levels of phytase (250, 500, 750 FTU/kg feed) in combination of vitamin D3 (4000, 5000, 6000 IU/kg feed) respectively. Results: The phytase and vitamin D3 supplemented groups (particularly, supplementation of 500 FTU/kg plus 5000 IU/kg) showed increased (P<0.05) live weight gain, dressing percentage, keel and shank length, toe and tibia ash percentage, calcium and phosphorous level in blood plasma; improved (P<0.05) feed conversion ratio as compared to the group A and B. Moreover, supplementation of phytase and vitamin D3 at 500 FTU/kg plus 5000 IU/kg was most economical as cost/kg live weight than 250 and 750 FTU/kg diet supplementation. Conclusion: It may be concluded that 500 FTU/kg phytase + 5000 IU/kg vitamin D3 supplementation to low-P diet improved growth performance, carcass weight and bone mineralization in broilers.

Anahtar Kelimeler

Phytase, vitamin D, broiler, growth performance, phosphorous

Fitaz ve vitamin D ilavesinin broylerlerde performans ve kemik mineralizasyonu üzerine kümülatif etkisi

Öz

Amaç: Çalışmanın amacı düşük düzeyde fosfor içeren rasyonlarla beslenen broylerlere fitaz ve vitamin D ilavesi yapılmasının performans ve kemik mineralizasyonu üzerindeki etkinliğinin belirlenmesidir. Gereç ve Yöntem: Çalışmada toplam 240 adet günlük yaşta civciv, her birinde 10 adet civciv bulunan 3 tekerrürlü 8 gruba ayrıldı (A, B, C, D, E, F, G ve H). Grup A içerisinde normal oranda fosfor bulunan temel rasyonla beslendi (Kontrol), Grup B inorganik fosfor ve fitaz ilavesi yapılmayan rasyonla beslendi (Negatif kontrol). Grup C, D ve E’nin rasyonları ise sırasıyla yalnızca 3 düzeyde fitaz içerirken (250, 500, 750 fitaz birimi (FTU)/kg yem); F, G ve H grupları yine sırasıyla 3 düzeyde fitazın yanı sıra (250, 500, 750 FTU/kg yem), vitamin D3’ü (4000, 5000, 6000 IU/kg yem) de içerdi. Bulgular: Çalışmada fitaz ve vitamin D3 ilave edilen gruplarda (özellikle, 500 FTU/kg fitaz + 5000 IU/kg vitamin D3 ilave edilen grup) A ve B gruplarından daha fazla canlı ağırlık artışı, karkas randımanı, sternum ile bacak uzunlukları, ayak ve tibia kül yüzdesi ile kalsiyum ve fosfor düzeyi belirlenirken (P

Anahtar Kelimeler

Fitaz, vitamin D, broiler, büyüme performansı, fosfor

Kaynakça

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