Yılmaz, Bestami2022-02-232022-02-232009Yıldız, H. vd. (2009). "Effects of ascorbic acid and lighting schedule on tibiotarsus strength and bone characteristics in broilers". Archiv für Tierzucht-Archives Animal Breeding, 52(4), 432-444.0003-9438https://doi.org/10.5194/aab-52-432-2009https://aab.copernicus.org/articles/52/432/2009/http://hdl.handle.net/11452/24586This study was conducted to determine the effects of two lighting programs (continuous program; 24 h lighting or intermittent; 12 h daylight followed by three cycles of 1 h lighting and 3 h dark program during the night period) and three different ascorbic acid (AA) supplementations (0, 200 and 400 mg/l, added to water) on some serum parameters, ash content and mechanical properties of tibiotarsus. For this purpose one-day-old male commercial (Ross PM(3)) broiler chicks (n=600) were divided into 6 treatment groups (2x3) with random replicates (4 replicates per treatment). At the end of 6 weeks, intermittent lighting program negatively influenced serum alkaline phosphatase (ALP) and calcium (Ca) levels (P<0.001) while continuous lighting program had positive influence on bone ash, Ca and phosphorus (P) content (P<0.001). The AA addition decreased serum inorganic phosphorus (Pi) level and positively affected bone chemical characteristics (P<0.001). On the mid-section of the bone, although intermittent lighting had positive effect on bone mechanical parameters (P<0.001), no remarkable effect was observed by AA supplementation. The results of the present study suggest that interaction of intermittent lighting and AA supplementation (200 mg/l) may have positive effect on chemical composition and mechanical characteristics of bone in broilers.eninfo:eu-repo/semantics/openAccessAscorbic acidAshBreaking forceBroilerLightingTibiotarsusLaying hensVitamin-cCommercial broilersLeg abnormalitiesDietary calciumBroken bonesPerformanceChickensSupplementationPhosphorusAgricultureEffects of ascorbic acid and lighting schedule on tibiotarsus strength and bone characteristics in broilersArticle0002690188000112-s2.0-85063839913432444524Agriculture, dairy & animal scienceOsteochondrodysplasias; Thiram; Broiler Chickens