The effects of perch cooling on performance, carcass, and meat quality characteristics and behaviour of broilers reared at high temperatures with different litter thicknesses

Abstract

The aim of the present study was to investigate the effects of cooled perch and litter thickness on performance, meat quality, carcass, and behaviour traits on broilers reared at high environmental temperatures. A total of 459 1 day-old male broiler chicks were randomly assigned to nine treatment groups based on the perch treatment (no perch, non-cooled perches, cooled perches) and litter thicknesses (1, 7 and 14 cm) with three replicates. Body weight was higher in broilers reared at cooled perch group at 6 wks (P<0.05). Body weight of chickens reared under the 1 cm thickness was found higher than the 7 and 14 cm of litter thickness chickens at 6 wks. Live and carcass weights, total breast and drum weights were higher in broilers reared at 1 cm litter thickness. The perch-contact incidence of chickens reared under the cooled perch was found higher than the non-cooled chickens for all hours at 6 wks. In conclusion, it is indicated that perch cooling and 1 cm of litter thickness have a beneficial effect on broiler performance exposed to high temperatures.

Keywords

• Broiler
• cool perch
• meat quality
• perching
• performance

Tünek soğutmanın farklı altlık kalınlıklarında yüksek sıcaklıklarda yetiştirilen etlik piliçlerin performans, karkas ve et kalite özellikleri ile davranışları üzerine etkileri

Abstract

Bu çalışmanın amacı yüksek çevresel sıcaklıklarda yetiştirilen etlik piliçlerde soğutulmuş tünek kullanımı ve altlık kalınlığının performans, et kalitesi, karkas ve davranış özellikleri üzerine etkilerini araştırmaktır. Toplam 459 bir günlük yaşta erkek etlik piliçler, tünek denemesi (tünek yok, soğutma olmayan ve soğuk tünek) ve altlık kalınlıklarına (1, 7 ve 14 cm) rastgele 3 tekrarlı olacak şekilde 9 gruba yerleştirilmiştir. Soğutulmuş tünek grubunda yetiştirilen etlik piliçlerde 6. haftada canlı ağırlık en yüksek değerde bulunmuştur. 1 cm altlık kalınlığı grubunda yetiştirilen etlik piliçlerde altıncı haftada canlı ağırlığı 7 ve 14 cm kalınlık grubunda yetiştirilen tavuklara göre daha yüksek bulunmuştur. Kesim öncesi canlı ağırlığı ve karkas ağırlığı, bütün göğüs ve kalçalı but ağırlıkları 1 cm altlık kalınlığı grubunda daha yüksek bulunmuştur. Altıncı haftada ve incelenen tüm saatler için etlik piliçlerin tünek ile teması bakımından soğutulmuş tünekler ile temas sıklığı soğutulmamış tünek temasına göre daha yüksektir. Sonuç olarak, yüksek sıcaklıklara maruz kalan etlik piliçlerde soğuk tünek ve 1 cm altlık kalınlığının etlik piliç performansı üzerine olumlu etkisinin olduğu belirlenmiştir

Keywords

• Et kalitesi
• etlik piliç
• performans
• soğuk tünek
• tüneme

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