Effect of different levels of Molybdenum, Sulphur and Iron on Copper absorption and fiber quality‏ ‏in Markhoz goat and Sanjabi sheep

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Abstract

An experiment conducted to evaluate the level of molybdenum, sulphur and iron ‎supplement on the copper status and clinical deficiency in Iranian sheep and goat. Eight of one ‎year -old Sanjabi sheep and Markhoz goats housed in individual crates in animal house of Razi ‎University. Animals fed with the same basal diet which was supplemented with different levels of ‎minerals of Mo, S and Fe during five months experiment. Blood samples were collected in EDTA ‎containing tubes to measure plasma copper and thiomolybdate. Wool and Mohair samples were ‎collected by taking patch samples (10 × 10 cm2) from the mid-side area of the animals every ‎three weeks to measure copper content and quality parameters. Supplementing the diet with 30 ‎mg molybdenum, 400 mg iron and 2.5 g sulfur /kg DM produced sub clinical copper deficiency ‎with minor dipigmentation of fleeces and mohair and poorer crimp being observed. The ‎response to high levels of molybdenum, iron, and sulfur in sheep and Markhoz goat was ‎different. The fiber diameter significantly reduced after four months of experiment especially in ‎goat mohair.‎

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