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

Öz

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 male

equal number of broiler chicks were used. A total of 4 groups, 1 control and 3 experimental group, were formed which

contains 64 chicks in each of them. Each group divided into 4 subgroups which contains 16 equal numbers of female and male

chicks. Rations were corn-soybean meal based. The 0.20% DL-methionine was added to control diet and HMB added to other

three treatment groups 0.15, 0.20 and 0.25%, respectively. At the end of experiment there were no statistically differences

observed in live weight, feed consumption, live weight gain and feed efficiency (P>0.05). However, although the live weight

of the group that consumed 0.20% HMB and the control group were very close to each other, the live weight was lower about

55 g at the experimental groups consumed 0.15% and 0.25% HMB. These data shows that HMB which is DL-methionine

hydroxy analog can be used as an alternative diet supplement to DL-methionine in broiler diets.

Anahtar Kelimeler

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

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

Öz

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 dişi

ve erkek etlik civciv kullanılmıştır. Her birinde 64 adet civciv bulunan 1 kontrol ve 3 deneme grubu olmak üzere toplam 4 grup

oluşturulmuştur. Her bir grup, dişi erkek sayısı eşit olan 16’ şar civcivden oluşan 4 alt gruba bölünmüştür. Yemler mısır ve soya

fasulyesi küspesi bazlı hazırlanmıştır. Kontrol grubunun yemine % 0.20 düzeylerinde DL-metiyonin, diğer 3 deneme grubuna

sırasıyla %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 yemi

tüketen grup ile kontrol grubunun canlı ağırlıkları birbirine çok yakın olmasına karşın % 0.15 ve 0.25 HMB içeren yemi tüketen

deneme gruplarında çalışma sonu canlı ağırlık 55 g kadar daha düşük olmuştur. Bu veriler metiyonin hidroksi analoğu olan

HMB’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

Kaynakça

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