Kafes sisteminde yetiştirilen etlik piliçlerde sürü büyüklüğünün performans, bazı kan ve kemik parametreleri, musculus pectoralis pH düzeyi ve karkas kusurları üzerine etkisi

Bu araş tı rma, 25.000 ve 40.000 kapasiteli kafes sistemlerinin etlik piliç sürülerinde performans,bazı kan parametreleri, kemik kalitesi, Musculus pectoralis pH düzeyi ve karkas kusurları üzerineetkilerini karş ı la ş tı rmak için yap ı lm ı ş tı r. Bu amaçla, 25.000 ve 40.000 kapasiteli kümesler dörtüretim periyodu boyunca e ş zamanl ı olarak takip edilmi ş tir. Dört üretim periyodunun sonunda herkapasiteden canl ı a ğ ı rl ı kları dengelenmi ş toplam 20 piliç seçilmi ş tir. Piliçler boyun uçurma yöntemiile kesilmi ş , kanları al ı nm ı ş tı r. Gö ğ üs kas ı n ı n pHs ı kesimi takiben on dakika sonunda ölçülmü ş tür.Kemikler etlerinden soyulmu ş ve analizleri yap ı lm ı ş tı r. Karkas kusurları n ı de ğ erlendirmek için herbir özellikten toplam 300 piliç incelenmi ş tir. Ara ş tı rma grupları canl ı a ğ ı rl ı k, yem tüketimi, yemden yararlanma ve ölüm oranları bakı m ı ndanbenzer de ğ erler göstermi ş tir. Gruplar aras ı nda serum glikoz, kolesterol, VLDL kolesterol, trigliserit,protein, ürik asit düzeyleri ile alkalen fosfataz ve kreatin kinaz enzim aktivitelerinde istatistiki farkl ı l ı ktespit edilmemi ş tir. Tibio-tarsal kemi ğ in fiziksel özellikleri ve mineral düzeyi ile femur kemi ğ i fizikselözellikleri bakı m ı ndan gruplar benzerdir. Kafes sisteminde gö ğ üs kas ı n ı n pHs ı koyu, sert, kuru(KSK) et s ı n ı rları içerisindedir, fakat ara ş tı rma grupları aras ı nda istatistiki farkl ı l ı k tespitedilmemi ş tir. Kanat morarmas ı oran ı 40.000 kapasiteli kümeste önemli ölçüde yüksek bulunmu ş tur(P

Effect of flock size on performence, some blood and bone parameters, musculus pectoralis pH and carcass defects in broiler reared by cage housing

This research was conducted to compare performance, some blood parameters, bone quality, pHof Musculus pectoralis and carcass defects having 25.000 and 40.000 capacities of cage housing.For this purpose, 25.000 and 40.000 capacity flocks were simultaneously observed throughout thefour growth periods. At the end of the four production periods, a total of 20 broiler chickens havingstable live weight were selected from each capacity. Broiler chickens were slaughtered viabeheading method and blood samples were taken. Musculus pectoralis pH measurement wasperformed at the end of ten minutes after slaughter. Bones were removed from meat and analyzed.For evaluating carcass defects, 300 broilers were examined for each trait.Groups of the study showed similar values in terms of live weight, feed intake, feed efficiency andmortality rates. Statistical differences were not detected between the groups in serum glucose,cholesterol, VLDL cholesterol, triglyceride, protein, uric acid levels and alkaline phosphatase andcreatine kinase enzyme activities. Physical properties and mineral level of tibio-tarsal bone andphysical properties of femur were similar between the groups. The pH of the breast muscles in thecage housing was within dark, firm, dry (DFD) meat boundaries, but statistical differences were notfound between the groups of the study. Ratio of wing bruising was significantly higher in flocks with40.000 capacity (P

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