Organik bakır ve çinko’nun toklularda canlı ağırlık ile bu minerallerin serum ve yapağıdaki düzeyleri üzerine etkisi

Bu araştırmada, NRC (1985) tarafından koyunlar için önerilen inorganik mineral düzeylerine göre %25 oranında daha az düzeyde kullanılan organik yapıdaki bakır (Cu) ve çinko (Zn) minerallerinin besiye alınan toklularda canlı ağırlık, serum ve yapağı mineral düzeyleri üzerine etkisi incelendi. Kıvırcık ırkı toklular, inorganik (kontrol, n=8) ve organik (deneme, n=7) bakır ve çinko minerallerini içeren rasyon verilen iki gruba ayrıldı. Kontrol grubuna 7 mg/kg KM bakır-sülfat, 20 mg/kg KM çinko-sülfat,deneme grubuna ise 5.25 mg/kg KM bakır-şelat (2-hydroxy–4-methylthiobutyrate) ve 15.0 mg/kg KM çinko-şelat (2-hydroxy–4methylthiobutyrate) verildi. Her iki grubun ortalama canlı ağırlık, toplam canlı ağırlık artışı ve günlük canlı ağırlık artışı değerleri arasındaki farkın istatistiksel açıdan önemli olmadığı, ortalama serum bakır değerinin deneme grubunda rakamsal olarak dahayüksek olduğu, ortalama serum çinko değerinin deneme grubunda daha yüksek (P

Anahtar Kelimeler:

çinko, bakır, diyetler, kuzu, canlı ağırlık, canlı ağırlık artışı, mineral madde ilaveleri, koyun, koyun beslenmesi

The effects of organic copper and zinc on body weight, serum levels and wool levels in ram lambs

This study was carried out to evaluate live body weight, accumulation levels of minerals in serum and wool fed diets with organic copper (Cu) and zinc (Zn) reduced 25% of NRC (1985) recommendations. Ram lambs were divided equally into two groups given rations supplemented with inorganic (control, n=8) and organic (treatment, n=7) copper and zinc. Inorganic group received 7 mg/kg DM copper sulphate, 20 mg/kg DM zinc sulphate while organic group received 5.25 mg/kg DM copper chelate 2-hydroxy-4-methylthiobutyrate) and 15.0 mg/kg DM zinc chelat (2-hydroxy-4-methylthiobutyrate) in the ration. There were no statistically significant difference between the average body weight, mean body weight gains and total body weight gains of groups, the average serum copper level was numerically higher in the treatment group, mean serum zinc levels in treatment group were higher (P>0.05) and the avarage wool copper and zinc level was numerically higher in treatment group. As a conclusion, it was determined that supplementation of organic mineral sources to lamb rations at level of 25% less than NRC (1985) recommendations had similar or better results compared to groups supplemented with inorganic mineral sources.

Keywords:

zinc, copper, diets, lambs, liveweight, liveweight gain, mineral supplements, sheep, sheep feeding,

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