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Effect of zinc sources on haematology, enzyme activity and blood serum zinc concentration in Holstein dairy cattle

Published online by Cambridge University Press:  22 November 2017

S Sobhanirad ,
R Valizadeh ,
F Azizi ,
M Hedayati  and
A Tahmasebi
S Sobhanirad*
Affiliation:
ferdowsi university of mashhad, mashhad, Islamic Republic of Iran
R Valizadeh
Affiliation:
ferdowsi university of mashhad, mashhad, Islamic Republic of Iran
F Azizi
Affiliation:
ferdowsi university of mashhad, mashhad, Islamic Republic of Iran
M Hedayati
Affiliation:
ferdowsi university of mashhad, mashhad, Islamic Republic of Iran
A Tahmasebi
Affiliation:
ferdowsi university of mashhad, mashhad, Islamic Republic of Iran
*
Email: [email protected]
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Extract

Zinc (Zn) has a wide spectrum of biological activities and its deficiency has been related to various dysfunctions and alterations of normal cell metabolism (El Hendy et al., 2001). This element is a central component of hundreds of metalloenzymes which are concerned with the metabolism of feed constituents. Zn requirements of ruminants appear to be affected by dietary factors based on the variable animal responses that were observed after zinc supplementation. Supplemental zinc is usually added to animal diets in the form of zinc oxide or zinc sulphate. Recently, organically bound zinc supplements are using in diets of animals. Some researchers (Wedekind et al., 1992) have reported higher bioavailability for organically bound zinc sources than inorganic forms. Therefore, the objective of this experiment is to comparison the effects of organically bound and inorganic zinc supplements on haematological and biochemical parameters in blood serum.

Type
Theatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2009 , April 2009 , pp. 152
Copyright
Copyright © The British Society of Animal Science 2009

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References

El Hendy, H.A., Yousef, M.I., Abo, El., and Nega, N.I. 2001. Toxicology. 167, 163–170.Google Scholar
Wedekind, K. J., Hortin, A. E., and Baker, D. H. 1992. Journal of Animal Science 70, 178– 187.Google Scholar
Wright, C. L., and Spears, J. W. 2004. Journal of Dairy Science 87, 1085–1091.Google Scholar