Department of Animal Science, Mashhad Branch,
Islamic Azad
University,
Mashhad, Iran
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Thirty six growing male
Baluchi lambs with an average weight 26.5±0.3 kg were used to determine
the level and source of zinc (Zn) supplementation in diet on performance
of Baluchi lambs. Animals were divided into six groups. First group
served as a control (T1) and fed the basal diet containing 33 mg/kg Zn.
Second group was fed
50 mg/kg zinc propionate (T2), third group was
fed 100 mg/kg zinc propionate (T3), fourth group was fed 50 mg/kg zinc
sulphate (T4), fifth group was fed 100 mg/kg zinc sulphate (T5) and
sixth group was fed 50 mg/kg zinc propionate and 50 mg/kg zinc sulphate.
Results showed that the packed cell volume (PCV), mean corpuscular
volume (MCV), and platelet distribution width (PDW) in T2 (P<0.05) than
other groups. Number of red blood cell (RBC), haemoglobin (Hb)
concentration, mean corpuscular haemoglobin (MCH), mean corpuscular
haemoglobin concentration (MCHC) were higher (P<0.05) in T3 compared
with other groups. Moreover, the number of white blood cell (WBC),
platelets (PLT) and the concentration of calcium (Ca), phosphorous (P)
and Zn in T6 were significantly high (P<0.05) compared to the other
groups. In conclusion, feeding Baluchi lambs, with organic and mixed of
inorganic and organic Zn, improved haematological, biochemical
parameters, and concentration of zinc in serum of lambs.
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