Immediately after early diagnosis of pregnancy, each farm must have a breeding plan for non-pregnant cows in order to maintain its economic efficiency. Postponing and taking delayed measures can lead to permanent infertility of animals and very unnecessary costs.

How to act in case of a negative pregnancy test?

Synchronization remains the safest and most effective way to give a new chance for a cow to become pregnant and to have a positive effect on her general condition and successful reproduction. The huge advantage of synchronization schemes is the planning of the exact day and time of artificial insemination, even in the absence of external signs of estrus (dispersal).

The key to successful reproduction is the focus on early diagnosis, analysis and synchronization or resynchronization (re-insemination) of non-pregnant women.

The earlier the pregnancy test is performed (video zone examination), the less the losses will be for the farm. It is recommended that the test be performed around the 32nd day after artificial insemination.

For small farms, I recommend short but effective schemes, as they are easy to implement and do not require complex planning. On the other hand, they give favorable results without becoming an unaffordable cost.

We must strive to inseminate as many as possible the number of non-pregnant cows on the farm by synchronization, which implies an early general diagnosis of pregnancy and not a piecemeal action. The larger range of animals on the farm optimizes the processes and allows with one scheme to make planning of a large part of the herd, which greatly facilitates human efforts in the future.

All diagnosed non-pregnant cows are inseminated on a specific day and part and take the appropriate medications at the same time in advance. Short circuits are easy to implement and do not require qualified control.

This approach is effective and pulls as a “locomotive” reproduction and the economy in each farm.

What synchronization scheme to choose in case of a negative diagnosis for pregnancy?

As already mentioned, short and efficient schemes are preferable. We have already considered in detail the application of PRID Delta spirals, which allow all pregnant cows to be successfully inseminated with optimal application on the 10th day.

Let’s just remember – PRID Delta IUDs, in addition to having a beneficial effect on cysts and other reproductive problems, can be applied at any stage of the reproductive cycle – ie. the effectiveness of the method does not depend on the phase of the sexual cycle.

By comparison, with other synchronization schemes, this phase is essential when starting the synchronization process and it is more difficult to cover a larger number of non-pregnant animals.

Today I will present you a simple and short scheme for high-efficiency presynchronization. It is based on the injection of Ovalerin, whose main active ingredient is gonadorelin, and Enzaprost with the active ingredient dinoprost.

Presynchronization to improve the so-called Ovsynch synchronization:

Оварелин 2мл                          Оварелин 2мл                                    Ензапрост 5мл      Ензапрост 5мл       Оварелин2мл                                Осеменяване

Понеделник 8-9ч.                        Понеделник 8-9ч.                               Понеделник 8-9ч. Вторник                 Сряда 16-17ч.                             Четвъртък 8-9ч.

Ден 0                 7дни                                                   7 дни                                               56ч.           16ч.

The total duration of the scheme is 17 days – ie. 17 days pass from the start to the artificial insemination. Its goal is to increase the fertility by about 10% by injecting Ovarelin 7 days before the start of the actual synchronization scheme, which is a very good result.

In farms with more common uterine infections, presynchronization with Enzaprost can be used, which is injected 12 days before the first administration of Ovarelin. when the schedule is set above on Wednesday at 8-9 p.m. exactly 12 days before the first Ovarelin.

In conclusion, I would like to reiterate the economic and reproductive importance of the early diagnosis of non-pregnant cows and the close cooperation with the veterinarian who takes care of the farm. Every missed minute is equal to losses – financial, health and reproductive.

Strive for simple and effective solutions and always rely on accurate and timely diagnostics!

We thank Dr. Kolev for useful tips and remind you that for more information you can contact him by phone: 0884 541 787