Lignoselüloz İlaveli Diyetle Beslenen Etlik Piliçlerde Performans, İleal ve Sekal Mikrobiyal Popülasyon İle Histolojik Özellikler

Diyetteki lignoselülozun 28 ve 42 gün uygulama sonrası broiler tavuklarda performans, barsak mikrobiyatı, morfolojisi ve içerik pH’sı ile dışkı nemi üzerine etkileri değerlendirildi. Toplam 384 adet Cobb500 tavuk (ilk ağırlıkları: 41.88±1.56 g) 24 tekrar olmak üzere 4 gruba ayrıldı ve kontrol diyet (C), %0.4 lignoselüloz ilaveli kontrol diyet (T1), soya fasulyesi ve mısır yerine %0.6 lignoselüloz ilaveli diyet (T2), soyafasulyesi yerine %0.6 lignoselüloz ilaveli diyet (T3) ile beslendi. T2 uygulaması vücut ağırlığı, ağırlık kazanımı, yem tüketimi ve yem konversiyon oranını anlamlı derecede etkiledi. T2 ve T3 uygulamaları ileum ve sekumda ortalama LAB ve Bifidobacterium spp. sayısını artırırken Escherichia coli sayısında azalmaya neden oldu. %0.4 ile %0.6 uygulamaları arasında sekum Clostridium perfringens miktarında ise fark belirlenmedi. Lignoselüloz ilaveli diyetle besleme proventrikulus, taşlık ve barsakların orantısal organ ağırıklarını etkilemezken pH’da azalmaya neden oldu. T3 uygulaması, villus uzunluklarında artmaya ve anlamlı derecede dışkının neminde azalmaya neden oldu. Broiler diyetine lignoselüloz ilavesi performans, barsak mikrobiyatası ve villus uzunluğunda pozitif etkilere neden olmuştur. Elde edilen sonuçlar doğrultusunda %0.6 oranında lignoselüloz kullanılması önerilmektedir.

Performances, Ileal and Cecal Microbial Populations and Histological Characteristics in Broilers Fed Diets Supplemented with Lignocellulose

The effect of dietary lignocellulose on broilers performance, intestinal microbiota and morphology, pH of digesta and litter humidityafter 28 and 42 days of the experiment was evaluated. A total of 384 Cobb500 chickens (initial weight: 41.88±1.56 g) were divided into4 groups with 24 replications and fed with control diet (C), a control diet with added 0.4% of lignocellulose (T1), a diet with added 0.6%of lignocellulose at the expense of soybean meal and maize (T2), and a diet supplemented with 0.6% of lignocellulose at the expenseof soybean meal (T3). T2 treatment significantly influenced body weight, weight gain (WG), feed intake (FI) and feed conversion ratio(FCR). T2 and T3 treatment increased average LAB and Bifidobacterium spp. count, and decreased the number of Escherichia coli in theileum and cecum, while differences in cecal Clostridium perfringens count among 0.4% and 0.6% treatments were not observed. Feedingthe lignocellulose diet did not affect the relative weights of empty proventriculus, gizzard or intestines, but led to a decrease in pHs.T3 treatment caused an increase of the villi heights and significantly lower moisture content in the litter. Even though the addition oflignocellulose into broilers diet positively influenced performances, changes in intestinal microbiota and villi heights, based on theresults of the present study, supplementation with 0.6% lignocellulose is recommended.

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