INTENDED USE
One of the aims of diary cow feeding management is to improve milk output and shortening the period of nonpregnancy.
PRINCIPLE
Detection of pregnancy in dairy cow offers valuable information to producers. For a long time, dairy cow
feeders and veterinarians are looking forward to simple, rapid and effective early pregnancy detection method,
which is important for improving feeding management and propagation rate. If the pregnancy is not promptly
detected after mating, it will result in delaying the period of calving and decrease of propagation rate and milk
output. Thus the cost of feeding management will be increased. If the pregnant dairy cow can be detected in
early period, the cow can get careful nursing and gestation management, which will increase the pregnancy
success rate. Non-pregnant cow can be hybridized early, shortening the period of non-pregnancy and
decreasing the feeding cost. Thus propagation rate and economical benefit will be increased. Study on the
diagnostic skill for early pregnancy of diary cow is very important to the development of the dairy cow industry.
Progesterone (P4) is a kind of steroid hormone. The concentration change of P4 in milk is one specific
characteristic indicating the activities of cow ovary. The estrous cycle of dairy cow is 21 days on average. P4
is in low-level at the beginning of the estrous cycle, thereafter rise gradually, reaches more high-level in
middle period of estrous cycle, P4 level in non-pregnant cow begins to drop to the lowest level on the
17th day after mating, while it is still at high level in pregnant dairy cow's blood and milk. This product is
designed and developed on the basis of the estrous cycle law of dairy cow. It can be performed at the end of
estrous cycle. 5 continuous days of test is needed. If only one red line appears, it indicates that the cow is not
pregnant, P4 is in the lowest level at this moment. It is recommended to make the best use of this time to
have the diary cow mate; If two red lines appear for all 5 days’ tests, it indicates the cow is pregnant. It should
get careful nursing and gestation management.
The test theory is based on variation of P4 in the estrous cycle, to determine whether the early pregnancy of
dairy cow by detecting P4 in the end of estrous cycle .The test strip employs colloidal gold
immunochromatographic technology for early pregnancy diagnosis of diary cow, with characteristics of high
accuracy, easy to operate, fast result, room temperature storage, easy to carry, safe to mother and baby cow.
SCOPE OF USE
The test can be used to determine the early pregnancy of diary cow, reexamine diary cows, and guide the artificial fertilization at right time.