Volume 5, Issue 3 (fall 2001)                   JCPP 2001, 5(3): 157-166 | Back to browse issues page


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Zare Shahneh A, Mataji R, Zamiri M, Moradi Shar-e-Babak M. Effects of β -adrenergic Agonist Metaproterenol on Carcass Quality and Quantity of Varamini Female Lambs. JCPP. 2001; 5 (3) :157-166
URL: http://jcpp.iut.ac.ir/article-1-73-en.html

Abstract:   (24682 Views)

Effects of the β-adrenergic agonist metaproterenol were studied daily gain, carcass composition and feed consumption of Varamini female lambs were studied. Thirty lambs were randomly assigned to a randomized complete block design with three groups (treatments) and two blocks (live weight). The ration was similar for all groups (ME: 2.6 MCal/kg, CP: 14.9%) and lambs were fed ad libitum. Metaproterenol was injected subcutaneously at 0 (control), 7 (low dose) and 14 (high dose) µg kg-1 w75. Lambs were weighed at 20-day intervals.

Mean daily weight gain and feed conversion ratio improved significantly by metaproterenol (P<0.05), but feed intake was not affected. Hot carcass weight, carcass weight minus fat-tail, dressing percentage and longissimus muscle characteristics were different among the three groups (P<0.01). Physically separated fat from several depots and fat-tail weight significantly reduced in the metaproterenol groups. Carcass fat content decreased but carcass protein content increased in metaproterenol treated lambs.

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Type of Study: Research | Subject: General

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