Özge SIZMAZ, Gültekin YILDIZ

Yumurtacı tavuklarda borik asit ve askorbik asitin performans, yumurta kalitesi, kolesterol ve kemik parametreleri üzerine etkileri

Bu deneme, % 17.5 bor ihtiva eden borik asitin (BA) ve askorbik asitin (AA) tek başlarına ya da birlikte (AABA) kullanıldıkları zaman yumurta tavuklarında performans, yumurta kalitesi, kan serum ile yumurta sarısı kolesterol düzeyleri ve kemik parametreleri üzerine etkisini belirlemek amacıyla gerçekleştirilmiştir. Bu amaçla 59 haftalık 160 adet Hyline White 98 yumurta tavuğu 10 tekrarlı 4 ana gruba ayrılmıştır. Kontrol grubu rasyonuna herhangi bir ilave yapılmamıştır. AA ilaveli guba 200 mg/kg AA, BA ilaveli gruba 120 mg/kg BA, AABA ilaveli gruba ise 200 mg/kg AA + 120 mg/kg BA katkisi gerçekleştirilmiştir. Yemleme dönemi 16 hafta sürmüştür. Rasyonlara borik asit ve askorbik asit ilavesi canlı ağırlığı, yemden yararlanma oranını, yumurta ağırlığını, yumurta kirilma direnci, kabuk kalinligi, yumurta ak ve sari indeksi, Haugh birimi ile sari agirligini ve kemik kül ile P düzeyini etkilememiştir. Ancak 11-12. haftalarda askorbik asit ilavesi ile yumurta verimi (P

Influence of dietary boric acid and ascorbic acid on performance, egg traits, cholesterol and bone parameters of laying hens

This study was conduct to investigate the impact of dietary boric acid (BA), includes 17.5 % boron, ascorbic acid (AA) and combined of boric acid and ascorbic acid (AABA) on performance, egg traits, blood serum and egg yolk cholesterol concentrations and some bone parameters of laying hens. In total, 160 Hyline-White 98 layers aged 59 weeks were allocated four treatments with ten replicates. Dietary treatments included the basal diets as control, AA-supplemented diets with an inclusion level of 200 mg/kg AA, and BA-supplemented diets with an inclusion level of 120 mg/kg BA and AABA- supplemented diets with an inclusion level of 200 mg/kg AA + 120 mg/kg BA. The experimental period lasted 16 weeks. Feeding ascorbic acid and boric acid diet did not significantly affect body weight, feed efficiency, egg weight, egg shell index, egg breaking strength, egg shell thickness, egg albumen index, egg yolk index, egg Haugh unit, egg yolk weight, tibia crude ash and phosphorus. Egg production increased (P

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