Application of veterinary ultrasound in animal husbandry production
1. B-ultrasound is used for regular pregnancy monitoring and early identification of empty sows to reduce feeding waste and increase economic benefits.
The accuracy of diagnosis of pregnancy through B-ultrasound monitoring of early pregnancy has increased by at least 9%, and non-pregnant mothers have been detected in time to avoid "ineffective feeding". At the same time, B-ultrasound monitoring can accurately grasp the number of pregnant sows as soon as possible, which plays a role in ensuring balanced production.
Due to the early detection of a large number of empty arms, the reason is that the introduction of boars brought into the infectious disease site, and timely measures were taken to reduce economic losses. B-ultrasound can also monitor abnormal ovarian function or diseases, empty pregnant and uterine diseases, stillbirth and abortion, and boar testes and accessory gonads. The performance and benefit of these functions can detect abnormalities in time and take corresponding measures to greatly improve Monitor the health of pigs and improve production efficiency.
2. Measure the pig's backfat thickness and calculate the eye muscle area. Breeding farms can use B-ultrasound to accurately measure pig backfat thickness and calculate eye muscle area without injury in vivo, which greatly improves the scientificity and accuracy of breeding and selection.
3. Pregnancy analysis of transgenic sheep and cloned sheep:
An ultrasound tomography scanner equipped with a 5MHz rectal probe was used to examine the pregnancy of white goats and natural mating goats that had undergone transgenic or nuclear transfer.
The results showed that: 28-102 days after embryo transfer, the accuracy of the pregnancy test in sheep was negative (B-ultrasound to judge non-pregnant sheep), the accuracy rate was 100%, and the pregnancy diagnosis of natural mating sheep and nuclear transfer recipient sheep was positive (B-ultrasound to judge pregnancy) and negative The accuracy rate is 100%, and some transgenic recipient sheep have false positives due to fetal growth arrest or miscarriage.
4. B-mode ultrasonic guided collection of bovine oocytes.
It is simple and reliable to collect bovine oocytes using B-type ultrasonic guidance, and it causes little damage to the cattle's vagina and ovaries, and has no adverse effects on the health and reproductive function of the cattle. Within a week, the same cow was harvested twice with an interval of 4 days, and the recovery rate of oocytes was 41%.
5. The application of B-mode ultrasound diagnostic technology in the industrialization of embryo transfer in Boer goats. Ultrasound diagnostic technology has been widely used in pregnancy inspection, pregnancy monitoring, superovulation and other aspects in mammalian embryo engineering and genetic engineering research.
