Publication: Değişik Yumurtacı Hibritlerin Tüy Skoru İle Yumurta Verim ve Yem Tüketimi Özellikleri Arasındaki İlişkiler
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Bu çalışmada canlı ağırlık ve yumurta kabuk rengi bakımından farklı özellikteki dış kaynaklı ve yerli hibritlerin değişik yaşlardaki tüy skorları ve yumurta verim özellikleri ile yem tüketimleri belirlenmiştir. Ayrıca tüy skoru ile yumurta verimi, yem tüketimi ve yumurta ağırlığı gibi özellikler arasındaki ilişkiler araştırılmıştır. Hayvan materyali olarak, dış kaynaklı kahverengi (Super Brown; DKY), dış kaynaklı beyaz (Supernick; DBY) ile Ankara Tavukçuluk Araştırma Enstitüsünde geliştirilen kahverengi yumurtacılar (ATAK ve ATAK-S) ve beyaz yumurtacı (ATABEY) genotiplerinden toplam 378 yumurtacı tavuk kullanılmıştır.Çalışma tesadüf parselleri deneme desenine göre düzenlenmiş, tavukların beslenmesinde; yetiştirme döneminde 3 hafta süre ile yumurta civciv yemi (%19 HP, 2900 ME,Kcal/kg), 4-10. haftalarda piliç büyütme yemi (%18 HP, 2800 ME,Kcal/kg) ve 11-16. haftalar arasında piliç geliştirme yemi (%16 HP, 2700 ME,Kcal/kg), 16. haftada kafeslere alınan piliçler ise 16-20 haftalarda yumurta başlangıç yemi (%17 HP, 2750 ME, Kcal/kg) , 21-50 haftalarda yumurta tavuk yemi 1. dönem (%17 HP,2800 ME,Kcal/kg) ve sonraki deneme süresince yumurta tavuk yemi 2. dönem (%16 HP, 2700 Kcal/kg) yemleriyle serbest olarak yemlenmişlerdir.Tüy skorları 30, 40, 50 ve 60. haftalarda değişik vücut bölgelerinde gözlemle gerçekleştirilmiştir. Ayrıca hayvanların yumurta verimleri günlük, yem tüketimi ve yumurta ağırlıkları ise haftalık olarak belirlenmiştir. Tüy skoru ile yumurta verimi, yumurta ağırlığı ve yem tüketimleri arasındaki korelasyonlar; genel, genotiplere göre, canlı ağırlık gruplarına göre ve yumurta kabuk rengine göre değerlendirilmiştir. Genel değerlendirmede hibrit gruplarında değişik vücut bölgelerinde belirlenen tüy skorları bakımından farklılıklar önemli bulunmuş (P<0.05) ve yumurta verimi ile tüy skoru arasında yüksek ilişki bulunmuştur (P<0.05, P<0.01). Beyaz yumurtacıların tüy kondüsyonunun daha iyi olduğu, ağır yumurtacı genotipin ise orta ağır kahverengilere göre daha iyi olduğu belirlenmiştir. İyileşen tüy kondüsyonu ile yem tüketimi azalma eğilimi göstermiştir. Yumurta ağırlığı ise artan tüy skoruna karşılık düşme eğilimi göstermiştir.
In this study, feather scores, egg productions and feed consumptions of local and imported layers which in different with live weight and egg shell color, were determined. Relationships between feather score and egg production and feed consumptions were also investigated. Total 378 layers were used as animal material. These were imported Brown layers (Brownnick, DKY), imported white layers (Supernick, DBY) and hybrids produced by Ankara Poultry Research Institute, brown layers (ATAK and ATAK-S) and white layer (ATABEY).Research was planned according to the factorial randomized complete block design. In first three weeks; layer chicken feed (%19 CP, 2900 ME,Kcal/kg); chicken growing feed (%18 CP, 2800 ME,Kcal/kg) between weeks of 4-10 and chicken improving feed (%16 CP, 2700 ME,Kcal/kg) between 11-16 weeks were used in the rearing period. After introducing to the battery cages, pullets were fed with egg starter feed (%17 CP, 2750 ME, Kcal/kg) until 20 weeks of age. Between weeks 20 and 50; first period layer feed (%17 CP,2800 ME,Kcal/kg); after 50 weeks second period layer feed (%16 CP, 2700 Kcal/kg) were given ad libidum to the hens.Scoring of feathers were done by observations in different body parts at the ages of 30, 40, 50 and 60 weeks. Also, feed consumptions and egg weights of all hens had been recorded weekly, but egg productions had been recorded daily. Correlations between feather score and egg production, feed consumption and egg weight were determined in general, according to live weight groups and egg shell color groups. In general determination; The differences of feather scores in different body parts were found significant between hybrid groups (P<0.05), and; feather score and egg production relationship was found significant (P<0.05, P<0.01). White layers had better plumage condition than browns. Heavy layer genotype had better condition than medium heavy genotypes in brown layer groups. Feed consumption showed decreasing, but egg weight showed increasing tendency by improved feather condition.
In this study, feather scores, egg productions and feed consumptions of local and imported layers which in different with live weight and egg shell color, were determined. Relationships between feather score and egg production and feed consumptions were also investigated. Total 378 layers were used as animal material. These were imported Brown layers (Brownnick, DKY), imported white layers (Supernick, DBY) and hybrids produced by Ankara Poultry Research Institute, brown layers (ATAK and ATAK-S) and white layer (ATABEY).Research was planned according to the factorial randomized complete block design. In first three weeks; layer chicken feed (%19 CP, 2900 ME,Kcal/kg); chicken growing feed (%18 CP, 2800 ME,Kcal/kg) between weeks of 4-10 and chicken improving feed (%16 CP, 2700 ME,Kcal/kg) between 11-16 weeks were used in the rearing period. After introducing to the battery cages, pullets were fed with egg starter feed (%17 CP, 2750 ME, Kcal/kg) until 20 weeks of age. Between weeks 20 and 50; first period layer feed (%17 CP,2800 ME,Kcal/kg); after 50 weeks second period layer feed (%16 CP, 2700 Kcal/kg) were given ad libidum to the hens.Scoring of feathers were done by observations in different body parts at the ages of 30, 40, 50 and 60 weeks. Also, feed consumptions and egg weights of all hens had been recorded weekly, but egg productions had been recorded daily. Correlations between feather score and egg production, feed consumption and egg weight were determined in general, according to live weight groups and egg shell color groups. In general determination; The differences of feather scores in different body parts were found significant between hybrid groups (P<0.05), and; feather score and egg production relationship was found significant (P<0.05, P<0.01). White layers had better plumage condition than browns. Heavy layer genotype had better condition than medium heavy genotypes in brown layer groups. Feed consumption showed decreasing, but egg weight showed increasing tendency by improved feather condition.
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Tez (yüksek lisans) -- Ondokuz Mayıs Üniversitesi, 2008
Libra Kayıt No: 65179
Libra Kayıt No: 65179
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