Effect of body weight on feed intake of pullets at the onset of lay

Yapılan bu çalı ş mayla, yumurta ba ş lanğıc ındaki yarkalarda, canlı a ğırlığın yem tüketimiüzerine etkisi incelenmiş tir. 132 adet Nick Brown yarka canlı a ğırlıkları na göregruplandır ıldı ve bireysel kafeslere yerle ş tirildi. Hafif ve a ğı r grup yarkalara ait canlıa ğırlıklar s ıras ı yla hafif grupta 1481 g ile 1616 g, a ğır grupta ise 1617 g ile 1752 g aras ındade ğere sahiptir. Her iki canlı a ğırlık grubunun günlük yem alım biçimleri yumurtlamaba ş langıc ıyla iliş kilendirilerek kaydedildi, yani 5 gün öncesi, 5 gün sonras ı ve ilkyumurtlama günü. Yumurtlama ba ş langıc ındaki yarkalar ın günlük yem tüketimleri ile canlıa ğırlık farklı lıklar ı aras ında iliş ki bulunup, buna ek olarak canlı a ğırlıktaki art ış ile birliktegünlük yem tüketimi arttı. Bu veriler göstermektedir ki sürü ortalamas ı yem tüketimi,sürüdeki farklı canlı a ğ ırlıktaki bireylerin yumurtlama ba ş langıc ından zirve üretiminegerekli yem tüketimi için zayıf bir göstergedir.

Yumurtlama periyotu başlangıçındaki yarkalarda canlı ağırlığın yem tüketimi üzerine etkisi

An experiment was conducted to investigate the effect of body weight on feed intake of pulletsat the onset of lay. One hundred and thirty two Nick Brown Pullets were grouped into twoaccording to their body weight, and caged singly. The range of body weight for the lightand heavy groups was 1481 g to 1616 g, and 1617 g to 1752 g, respectively. Daily feedintake patterns of the two body weight groups were recorded in association to the onset ofegg production, i.e. 5 days prior to, 5 days after and at initial oviposition. The differencesin body weight were found to be related to daily feed intake of pullets at the onset of lay,moreover, daily feed intake increased with increasing body weight. These data indicate thataverage flock consumption is a poor indicator of consumption for birds of different body weight at the onset of lay.

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