Farklı düzeylerde enerji-protein içeren rasyonlarla beslemenin kazlarda besi performansı ve karkas özelliklerine etkisi

Bu çalışmada, farklı düzeyde enerji-protein içeren rasyonlarla beslemenin kazların besi performansı vekarkas özellikleri üzerine etkisi incelendi. Çalışmada 1-3 günlük yaşta 60 adet kaz civcivi kullanıldı. Başlangıçdöneminde (0-4 hafta) herbirinde 30’ar adet kaz civcivi bulunan iki grup oluşturuldu. Birinci gruba (G1) %20ham protein (HP), 2900 kcal/kg metabolik enerji (ME), ME/HP oranı 145, ikinci gruba (G2) ise %23 HP, 3000kcal/kg ME, ME/HP oranı 130 olan rasyon verildi. Başlangıç döneminde 130 ME/HP içeren rasyonla beslenenkazlar 1518 g canlı ağırlık kazandı (P0.05). Denemede karkas randımanı, karkas parça vetüy ağırlıkları üzerine farklı enerji-protein düzeylerinin önemli bir etkisi görülmemiştir (P>0.05). Bu çalışmadaKars’ta yetiştirilen kazların başlangıç yemlerinin %23 HP, 3000 kcal/kg ME; ME/HP 130, büyütme dönemi rasyonunun da %15 HP, 3000 kcal/kg ME, ME/HP 200 içermesinin yeterli olabileceği kanısına varılmıştır.

Anahtar Kelimeler:

yem alımı, besin değeri, besinle alınan protein, karkas özellikleri, kümes hayvanları, kaz, canlı ağırlık artışı, kaz yavrusu, kaz beslenmesi, yemden yararlanma, besi performansı, et randımanı, ham protein, karkas kalitesi

The Effect of diets in different energy-protein levels on fattenning performance and carcass traits of domestic geese (Anser Anser)

Effect of diets in different energy and protein levels on the fattenning performance and carcass traits of geesehas been investigated. Sixty goslings in 1-3 days old age were used in the experiment, in the starter period (0-4week) goslings were divided into 2 groups each containing 30 animals. A ration composed of 20% crudeprotein (CP) with 2900 kcal/kg metabolisable energy (ME) and ME/CP 145 were given to group 1 (G1) whilegroup 2 (G2) received a ration containing 23% CP, with 3000 kcal/kg and ME/CP 130, in this period goslingswhich were fed with higher protein level gained 1518 g live weight (P<0.05) and their feed conversion efficiecywas better than G1. At the grower period (5-10 week), each group was further divided into subgroups eachcontaining 15 goslings. G1 and G2 were divided into as G1A, G1B and G2A, G2B, respectively. G1A and G2Awere treated with the rations containing 17% CP, 3000 kcal/kg ME, ME/CP 177 whereas G1B and G2B weretreated with the rations containing 15% CP, 3000 kcal/kg ME, ME/CP 200. Different energy-protein ratioshowed no effect on average live weights of groups at grower period (P>0.05). There was no statisticaldifferencens between the diet groups, in terms of carcass dressing percentage, carcass cuts and feather weight. Itwas concluded that diet contain 23% CP, 3000 kcal/kg ME, ME/CP 130 in starter period and 15% CP, 3000kcal/kg ME, ME/CP 200 in grower period is sufficient for the geese reared in Kars region.

Keywords:

feed intake, nutritive value, dietary protein, carcass characteristics, poultry, geese, liveweight gain, goslings, goose feeding, feed conversion efficiency, fattening performance, dressing percentage, crude protein, carcass quality,

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