GÜLTEKİN YILDIZ, BEKİR HAKAN KÖKSAL, ÖZGE SIZMAZ

Rasyonlara ilave edilen maya ve Borik asidin broylerlerde performans, karkas ve bazı kan parametreleri üzerine etkisi

Bu çalışmada, broyler rasyonlarına borik asit (%17.5 bor) (BA) ile Saccharomyces cerevisae (maya, M) ilavesinin canlı ağırlık artışı, yemden yararlanma oranı, karkas randımanı, kemik külü, serum toplam protein, kolesterol ve trigliserit düzeyleri üzerine etkisi incelenmiştir. Deneme 42 gün sürdürülmüştür. Denemede toplam 96 adet 1 günlük yaşta erkek broyler civciv (Ross-308) her birinde 6 adet olmak üzere 16 bölmeye (her biri 0.9 m2) rasgele dağıtılmıştır. Denemede mısır ve soya küspesi temeline dayalı bir kontrol ve üç deneme grubu rasyonu oluşturulmuştur. Yem ve su ad libitum verilmiştir. Birinci deneme grubu rasyonuna 2.5 g/kg M, ikinci deneme grubu rasyonuna 60 mg/kg BA, üçüncü deneme grubu rasyonuna ise kombine edilmiş 2.5 g/kg M ve 60 mg/kg BA beraber (M+BA) ilave edilmiş, kontrol grubuna herhangi bir yem katkı maddesi ilavesi söz konusu olmamıştır. Deneme sonunda canlı ağırlık, canlı ağırlık artışı, yem tüketim değerleri ve yemden yararlanma oranları açısından kontrol ve diğer deneme grupları arasında farklılıklar sadece rakamsal düzeyde kalmıştır (P>0.05). Diğer yandan çalışmanın ilk periyodunda (0-21. günler) yem tüketimi tüm deneme gruplarında kontrol grubuna göre istatistiksel açıdan önemli düzeyde artmıştır (P0.05). Araştırma sonuçları rasyona borik asit ve Saccharomyces cerevisae ilavesinin broylerlerde performans, karkas özellikleri ve bazı kan parametreleri üzerine olumsuz etkilerinin olmadığını göstermiştir.

Anahtar Kelimeler:

tavuk beslenmesi, canlı ağırlık artışı, performans özellikleri, kümes hayvanları, tavuk, Saccharomyces cerevisiae, diyetler, borik asit, yemden yararlanma, karkas, karkas kalitesi, karkas bileşimi, etlik piliç, vücut ağırlığı, kan kimyası, yem alımı, yem zenginleştiriciler

Effects of dietary boric acid and yeast (Saccharomyces cerevisiae) supplementation on performance, carcass traits and some blood parameters of broilers

This study was carried out to determine the eff ects of boric acid (BA) (17.5% boron) and Saccharomyces cerevisiae (yeast, M) supplementation on body weight gain, feed conversion ratio, carcass yield, bone ash content, serum total protein, cholesterol and triglyceride levels. The experiment lasted in 42 days. Totally 96 one-day old male broilers (Ross 308) were housed at a density of 6 chicken (0.9 m2 for each) in each per of experimental groups. Diets were based on maize and soybean meal. Experimental groups divided into one control and three experiment groups. Feed and water were given ad libitum. The experimental diets supplemented with 2.5 g/kg M for the first group, 60 mg/kg BA for the second group and 2.5 g/kg M plus 60 mg/kg BA combination for the third group (M+BA). At the end of experiment period there were some numerically diff erences about body weight, body weight gain, feed consumption values between control and all other treatment groups (P>0.05). On the other hand for first part of experiment period (0-21 days), there were statistically significant increasing of feed consumption for treatment groups compare with control group (P<0.01). There were no statistically diff erent feed conversion ratio, hot carcass yield, internal organs weight, tibia ash and boron values and serum cholesterol, triglyceride and total protein levels (P>0.05). The results of experiment showed that addition of boric acid and Saccharomyces cerevisiae into rations had no negative eff ect on performance, carcass traits and some blood parameters in broilers.

Keywords:

fowl feeding, liveweight gain, performance traits, poultry, fowls, Saccharomyces cerevisiae, diets, boric acid, feed conversion efficiency, carcasses, carcass quality, carcass composition, broilers, body weight, blood chemistry, feed intake, feed supplements,

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