Application of veterinary laparoscope in diagnosis and treatment of sheep reproductive diseases
1. Diseases of the ovary:
①Early degeneration of the corpus luteum: 3-5 days after estrus, if the corpus luteum becomes smaller and changes from fleshy red to light yellow, it is degeneration of the corpus luteum. Embryos cannot be transferred if the recipient's corpus luteum is degraded at an early stage, and embryos may also undergo degenerative changes if the donor's corpus corpus degenerates at an early stage. The recovery rate of embryos is greatly reduced, or embryos cannot be recovered at all.
Laparoscopy is used to observe the changes of the corpus luteum in the ovary, and hormones are used to prevent the corpus luteum from degenerating prematurely to ensure the recovery rate of embryos.
②Ovarian cysts: Ovarian cysts in goats treated with natural estrus or superovulation are mostly follicular cysts. The follicle wall is thick, poor in transparency, and grayish white. The number and size of cysts vary, with small numbers being larger, and multivesicular cysts being relatively small. In superovulated goats, luteal cysts are sometimes seen due to LH or HCG injections during breeding. The corpus luteum cyst is slightly protruding on the surface of the ovary and is dark red in color without a depression in the center. When ovarian cysts occur, they can be treated with laparoscopic needle puncture.
2. Diseases of the uterus:
① Suspected tuberculosis of the uterus: When suspected tuberculosis of the uterus occurs, there are various pearl-like nodules on the uterine serous membrane. The nodules are as big as the head of a match, and the surface is highly reflective with bright white protrusions.
②Uterine adhesions: Uterine and fallopian tube adhesions mostly occur in sheep that have undergone multiple embryo recovery operations. Adhesion mostly occurs at the tip of the uterine horns and the fimbria of fallopian tubes. The tips of the uterine horns bend and fuse together. If the umbrella of the fallopian tube has adhesions, it is common that the ovaries are buried in connective tissue and the ovaries cannot be seen. Some parasites in grazing sheep, such as Cysticercus tenuis, may also cause adhesions of the fallopian tubes.
③ Uterine effusion: due to endometritis or fetal infiltration, uterine effusion can be caused. When uterine effusion occurs, the uterus is pouch-shaped, the uterine wall is thick, and the blood vessels under the uterine serous membrane atrophy.
When a disease occurs in the uterus, a laparoscope can be used to observe the situation in the uterus, and then some conventional methods can be used for treatment. If uterine effusion occurs, puncture into the uterus with a laparoscopic puncture needle, suck out the uterine effusion with a straw, and then use drugs to treat it.