NDLI: Effect of Zinc Methionine or Zinc Sulfate Supplementation on Milk Production and Composition of Milk in Lactating Dairy Cows

Content Provider	Springer Nature Link
Author	Sobhanirad, Saeid Carlson, Dorthe Bahari Kashani, Reza
Copyright Year	2009
Abstract	Eighteen lactating dairy cows were used to compare the effects of organic and inorganic Zn supplements on milk production and chemical composition of milk. Animals received three diets in a randomized block design: basal diet with no supplemental Zn (control, 42 mg Zn/kg), basal diet plus 500 mg Zn/kg of dry matter (DM) as zinc sulfate monohydrate (ZnS) and basal diet plus 500 mg Zn/kg of DM as zinc methionine (ZnM). Results showed that milk and fat-corrected milk yield in dairy cows were not significantly affected by Zn source although a numerical increase was observed. The percentages of protein, lactose, fat, solid nonfat, total solid, and density of milk were not significantly different between treatments. However, dairy cows that received ZnM tended to produce more milk and fat-corrected milk with a lower somatic cell count as compared to controls. The zinc concentration in milk in the ZnM and ZnS groups was higher (P < 0.05) than in milk from the control group, but there were no significant differences between ZnS and ZnM groups.
Starting Page	48
Ending Page	54
Page Count	7
File Format	PDF
ISSN	01634984
Journal	Biological Trace Element Research
Volume Number	136
Issue Number	1
e-ISSN	15590720
Language	English
Publisher	Humana Press Inc
Publisher Date	2009-10-03
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Dairy cows Inorganic zinc supplement Organic zinc supplement Milk production and composition Oncology Nutrition Biotechnology Biochemistry
Content Type	Text
Resource Type	Article
Subject	Biochemistry (medical) Endocrinology, Diabetes and Metabolism Clinical Biochemistry Biochemistry Inorganic Chemistry

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