Sheep immunization twins can increase the sheep's double lamb rate by 20%-40%.
Ewes that are healthy and disease-free, have normal fertility, and are of good constitution can also be used for goats and deer.
There are two types of sheep immunization twin injections:
First, water agent. The first use of each sheep was injected 2 times, 1 ml each time, and 1 ml was injected 35 days before mating; 1 ml was injected after 20 days and the injection site was subcutaneously in the neck. Two months after the second injection, breeding began. The sheep injected in the first year need to be injected with 1 ml in the first 15 days of the second year.
Second, oil agent. When used for the first time, intramuscular injection of 2 ml was performed 20 days before mating. In the second year of repeated use, the dose is halved. The method is the same as the first year. Injections should not be frozen, preferably at a temperature of 4-8 degrees Celsius.
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