N. K. YADAVA, Meenakshi JINDAL, K.L. JAIN, R.K. GUPTA

Effect of two dietary protein levels on body weight and composition in Channa punctatus (bloch.) fingerlings

Channa punctatus yavrularını beslemek için düşük (%33) ve yüksek protein (%40) içeren yemler hazırlanmıştır. Yedi farklı beslenme şekli ile yavru balıklar 45 gün boyunca vücut ağırlığının %3’ü oranında beslenmiştir. Yapılan çalışmalar sonucu düşük proteine (LP) sahip yemlerle beslenen balıklarda büyüme oranı düşükken, yüksek proteine sahip yemlerle (1L/3H) beslenen yavru balıklarda büyüme performansı yüksek çıkmış ve sürekli olarak yüksek protein (HP) diyetiyle beslenen balıklarınkine eşit bulunmuştur. Besin (SGR, GCE, APD) ve FRC değerleri; hem sürekli yüksek proteinli yemle beslenen hemde 1L/3H’den oluşan yemle beslenen yavru balıklarda benzer çıkmıştır. Sonuç olarak, C. punctatus için büyüme ve besin değerleri riske edilmeden protein tasarrufu yapılabilir. Toplam protein girdisi temel alındığında, günlük yüksek proteine sahip yemle yapılan beslenmeyle karşılaştırıldığı zaman 1L/3H beslenme programı sayesinde büyüme etkilenmeksizin %12,36 protein tasarrufu sağlanabilir.

Anahtar Kelimeler:

Channa punctatus, vücut komposizyonu, vücut ağırlığı, karkas bileşimi, yaşayabilme, su kalitesi, besinle alınan protein

Channa punctatus (bloch.) yavrularında iki farklı proteinin vücut ağırlığı ve kompozisyonu üzerine etkisi

Low-protein (33%) and high protein (40%) diets were formulated to feed the fingerlings of Channa punctatus. Seven feeding treatments were maintained and the fingerlings were fed at 3% BW $d^ {-1}$ for 45 days. Studies have revealed that regular feeding on low protein (LP) diet resulted in significantly (P<0.05) low growth, while feeding on 1L/3H diets resulted in good growth performance and was equal to the fish fed continuously on high protein (HP) diet. Nutrient retention (SGR, GCE, APD) and FCR values were similar in fingerling fed either continuously on high protein diet or on a feeding schedule consisting of 1L/3H. These studies have indicated the possibility of protein saving without compromising the growth and nutrient retention in C. punctatus. Based on total protein input 12.36% protein can be saved without affecting growth, by adopting the 1L/3H feeding schedule as compared to daily feeding on high protein diet.

Keywords:

Channa punctatus, body composition, body weight, carcass composition, survival, water quality, dietary protein,

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