Parenteral methods of supplementation with copper and selenium

Area of Science:

• Veterinary Medicine
• Animal Nutrition
• Biochemistry

Background:

• Parenteral supplementation bypasses dietary interactions for ruminants.
• Copper and selenium are essential trace elements for livestock health.
• Oral supplements can be affected by interactions with other dietary components.

Purpose of the Study:

• To evaluate different parenteral copper preparations for ruminant supplementation.
• To assess the efficacy of selenium supplementation via parenteral routes.
• To explore sustained-release systems for improved nutrient delivery.

Main Methods:

• Comparison of copper preparations: calcium edetate (EDTA), methionate, oxide, and oxyquinoline sulphonate.
• Administration of sodium selenate for selenium deficiency correction.
• Investigation of controlled-release systems including barium selenate depots and copper-containing glasses.

Main Results:

• Copper EDTA complex demonstrated near-complete transfer to liver stores in sheep.
• Copper oxyquinoline sulphonate provided short-term protection with low copper dosage.
• Subcutaneous barium selenate provided sustained selenium but left injection site residues.
• Controlled-release copper glasses show promise for routine parenteral therapy.

Conclusions:

• Parenteral copper and selenium supplementation is effective for ruminants.
• Copper EDTA offers efficient liver copper transfer, while controlled-release systems aim for prolonged effects.
• Further research into controlled-release technologies is warranted for sustained nutrient management.