Effect of Different Pasture Plants on Carcass Yield and Some Carcass Part Weights in Free System Broiler Breeding

Öz

The aim of this study is to investigate the effect of different pasture contents on growth and carcass characteristics in free system poultry. Trial were made on 4 decares of clover, Bromus inermis or clover + Bromus inermis planted field in eight numbers of mobile pen that designed to be surrounded by steel wire. In trial one, 480 number of one day old male Hubbard Isa Red-JA broiler chicks were divided to 4 groups each of which further divided into 4 subgroups. The first group of broiler chickens were sent for cutting on the 42nd day and the other groups on the 84th day. At the end of the trial Carcass yields were obtained as 73, 77, 74 and 74 on days 42, 77, 76, 75, 73 and 84, respectively. The difference between day 84 carcass yields was found significant (P <0.05). The slaughter weights day 84 were found to be 1245.59, 1226.13, 1300.68, 1247.27, 1254.92 and 965.88, 929.12, 974.87, 903.96, 943.46, respectively, in the groups with the slaughter weights of 42 days (P>0.05). Carcass weight was found to be lower in all other parts than in control (P <0.05), while there was no difference in weight, edible part, neck and foot weight. As a result, although different pasture contents did not cause an early variability in slowly growing broiler chickens, live weight, cut and some carcass weight were affected in later periods.

Anahtar Kelimeler

• free system, broiler, pasture composition, carcass quality

Farklı Mera Bitkilerinin Serbest Sistem Etlik Piliç Yetiştiriciliğinde Karkas Randımanı ve Bazı Karkas Parça Ağırlıkları Üzerine Etkisi

Öz

Bu çalışmanın amacı farklı mera içeriklerinin serbest sistem (free range) tavukçulukta büyüme ve karkas özellikleri üzerine etkisini araştırmaktır. Deneme, yonca, kılçıksız brom ve kekik ekilmiş yaklaşık 4 dekar  arazide,  8  adet  mobil  kümes  içinde  ve  etrafı  seyyar  tellerle  çevrili  alanda  gerçekleştirildi. Denemede günlük yaşta 480 adet yavaş gelişen erkek Hubbard Isa Red‐JA broyler civcivler 4 ana gruba, her grup da 4 alt gruba ayrıldı. Deneme sonunda karkas randımanları 42. günde sıarasıyla % 77, 76, 75, 73 ve 84. günde sırasıyla % 73, 77, 74, 74 olarak elde edildi. 84. gün karkas randımanaları arasındaki fark önemli bulunmuştur (P<0.05). Kesim ağırlıkları 42 günde 1245.59±74.41, 1226.13±79.11, 1300.68±28.90, 1247.27±45.01, 1254.92±29.19 karkas ağırlıkları ise 965.88±80.00, 929.12±56.57, 974.87±46.63 , 903.96±27.36,  943.46±27.08  olarak  gerçekleşmiş  gruplar  arasında  fark  bulunmamıştır  (P>0.05).  Karkas parça ağırlıkları bakımından taşlık, yenilebilir kısım, boyun ve ayak ağırlıklarında fark oluşmamıştır. Diğer tüm  karkas  parça  ağırlıklarında  kontrol  grubunda  deneme  gruplarından  daha  düşük  bulunmuştur (P<0.05).  Sonuç  olarak  farklı  mera  içeriği,  yavaş  büyüyen  etlik  piliçlerde  erken  dönemde  bir  farklığa neden  olmadığı  halde,  ilerleyen  dönemlerde  canlı  ağırlık,  kesim  ve  bazı  karkas  parça  ağırlıklarını etkilediği gözlemlenmiştir. Anahtar kelimeler: serbest sistem, broiler, mera kompozisyon, karkas kalitesi     This study was presented orally at the 3rd International Vetistanbul Group Congress 2016 on May 17‐20.

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