The effect of different estrus stages on the number of collected oocytes

During the estrus stage (days), the average number of retrieved oocytes and the average number of available oocytes were obtained

0 4 6.8 7.88

7 14 17.7 10.7

7.15 6 14.8 8.9

Imported live egg collection instrument for detecting the number of estrus follicles in cows

The number of oocytes and available oocytes obtained by the imported live oocyte collection device on the 7th and 7-15 days of estrus were higher than those on the day of estrus (P (0.05)). On the day of estrus, the depression and follicular membrane ringing formed by the suction of large follicles from the ovaries can be used to collect other surrounding small follicles.

The live cow egg harvesting technology fully utilizes excellent maternal resources and ensures that the obtained embryos have a clear lineage. This study achieved good egg retrieval results using a simple egg retrieval method, but due to limitations in conditions, there are some issues with

The effects of continuous egg retrieval and superovulation treatment on egg retrieval efficiency and ovarian function will be discussed in future research.

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