The adequate selection of receipts has a major effect in the results of ET transfer program. Here are some criteria that are typically considered when selecting recipients:
- Age and reproductive history: Recipient cows should be in good reproductive health and have a history of successful pregnancies and calving. Younger cows (2-6 years old) are preferred as they tend to have higher conception rates and lower incidence of dystocia (difficult birth).
- Size and body condition: Recipient cows should be of similar size and body condition to the donor cow whose embryo is being transferred. This helps ensure that the transferred embryo can develop properly in the recipient’s uterus.
- Disease status: Recipient cows should be free of infectious diseases such as bovine viral diarrhea (BVD) and Johne’s disease, as these can affect the success of the ET procedure.
- Hormonal status: Recipient cows should have a normal hormonal status, as this is important for successful implantation and development of the transferred embryo.
- Availability: Recipient cows should be readily available and easily accessible for the ET procedure. This may involve selection of cows from the same herd or sourcing from outside.
- Temperament: It is also important to consider the temperament of recipient cows. Cows that are calm and easy to handle may be preferred for the ET procedure as it can reduce stress and increase the chances of success.
Overall, the selection of recipient cows for ET is a critical step in the process, and several factors should be considered to maximize the chances of success.
