Etlik Piliç Yemlerinde Metiyonin Kaynağı olarak 2-Hidroksi-4-(Metiltiyo) Butanoik Asit Kullanımı

Araştırma, etlik piliç yemlerinde metiyonin yerine metiyonin hidroksi analoğu olan 2-hidroksi-4-(metiltiyo) butanoik asidin(HMB) kullanımının etlik piliç performansı üzerine etkilerini belirlemek amacıyla yapılmıştır. Toplam 256 adet eşit sayıda dişive erkek etlik civciv kullanılmıştır. Her birinde 64 adet civciv bulunan 1 kontrol ve 3 deneme grubu olmak üzere toplam 4 grupoluşturulmuştur. Her bir grup, dişi erkek sayısı eşit olan 16’ şar civcivden oluşan 4 alt gruba bölünmüştür. Yemler mısır ve soyafasulyesi küspesi bazlı hazırlanmıştır. Kontrol grubunun yemine % 0.20 düzeylerinde DL-metiyonin, diğer 3 deneme grubunasırasıyla %0.15, 0.20 ve 0.25 düzeyinde HMB ilavesi yapılmıştır. Çalışma sonunda canlı ağırlık, yem tüketimi, canlı ağırlık artışı,yemden yararlanma bakımından istatistikî farklılık olmadığı saptanmıştır (P>0.05). Ancak % 0.20 düzeyinde HMB içeren yemitüketen grup ile kontrol grubunun canlı ağırlıkları birbirine çok yakın olmasına karşın % 0.15 ve 0.25 HMB içeren yemi tüketendeneme gruplarında çalışma sonu canlı ağırlık 55 g kadar daha düşük olmuştur. Bu veriler metiyonin hidroksi analoğu olanHMB’in etlik piliç yemlerinde DL-metiyonine alternatif yem katkı maddesi olarak yerine kullanılabileceğini göstermektedir.

Anahtar Kelimeler:

Metiyonin, Etlik piliç, 2-Hidroksi-4-(Metiltiyo) Butanoik Asit, Performans

Using 2-Hydroxy-4-(Methylthio) Butanoic Acid as a Source of Methionine in Broiler Diets

An experiment was carried out to determine the effects of using DL-methionine hydroxy analog 2-Hydroxy-4-(Methylthio) Butanoic acid (HMB) in broiler diets instead of methionine on broiler performance. Totally 256 female and maleequal number of broiler chicks were used. A total of 4 groups, 1 control and 3 experimental group, were formed whichcontains 64 chicks in each of them. Each group divided into 4 subgroups which contains 16 equal numbers of female and malechicks. Rations were corn-soybean meal based. The 0.20% DL-methionine was added to control diet and HMB added to otherthree treatment groups 0.15, 0.20 and 0.25%, respectively. At the end of experiment there were no statistically differencesobserved in live weight, feed consumption, live weight gain and feed efficiency (P>0.05). However, although the live weightof the group that consumed 0.20% HMB and the control group were very close to each other, the live weight was lower about55 g at the experimental groups consumed 0.15% and 0.25% HMB. These data shows that HMB which is DL-methioninehydroxy analog can be used as an alternative diet supplement to DL-methionine in broiler diets.

Keywords:

Broiler, 2-Hydroxy-4-(Methylthio) Butanoic acid, Methionine, Performance,

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