The harm of heavy metals to livestock breeding

After heavy metal ions enter the environment, unlike organic pollutants, they can be physically, chemically or biologically purified to reduce or eliminate their harmfulness.

(1) Cadmium pollution and its toxic effect on livestock and poultry

Cadmium can enter animals through the digestive tract, respiratory tract, skin, etc.

(2) Lead pollution and its toxic effect on livestock and poultry

Lead environment mainly through the digestive tract, the respiratory tract absorption, absorption rate depends on the solubility of lead compounds soluble lead acetate , lead chloride , lead oxide and other rapidly absorbed, insoluble lead chromate , lead sulfide, lead sulfate and Lead carbonate, etc.

Lead is an accumulative poison.

(3) Mercury pollution and its toxic effect on livestock and poultry

The toxicity of mercury is persistent, highly accumulative and easily transferable

The toxicity of mercury to animal bodies is mainly manifested in three aspects: ①Amalgam is a kind of neurotoxicity and tissue toxicity

(4) Copper pollution and its toxic effect on livestock and poultry

Various compound feeds in livestock and poultry breeding are often added with high content of copper (250mg/kg) to promote the growth of livestock and poultry, but more than 90% of the copper will be discharged into the environment with feces

Copper is an essential micronutrient for animals and humans, but excessive intake can cause animal poisoning

(5) Arsenic pollution and its toxic effects on livestock and poultry

The toxicity of elemental arsenic is extremely low, and arsenic compounds are highly toxic, and trivalent arsenic compounds are more toxic than other arsenic compounds

Arsenic preparations can enter the body from the digestive tract, respiratory tract and skin, first accumulate in the liver, and then slowly release from the liver to other tissues, where they are stored in bones, skin and keratinous tissues (coat or hoof)