Low Estrus and Pregnancy Rates in Does: Causes and Solu

Understanding the Causes of Low Estrous Rate in Female Rabbits

Low estrous rate in female rabbits can be attributed to various factors, which can be analyzed from the following aspects:

1. Nutritional Level and Feed Quality. The nutritional status and feed quality of rabbits are closely linked to the ovarian activity in females and the testicular function in males. If rabbits are fed lowquality feed that lacks essential nutrients such as vitamins or calcium and phosphorus, it can lead to a lack of estrus or low fertility rates.

2. Body Condition of the Female Rabbit. Both excessive obesity and underweight in female rabbits can hinder reproductive success. Generally, rabbits with an 80% body condition have higher fertility rates. Therefore, it is crucial for owners to monitor their rabbits' body condition and adjust their diet accordingly to prevent obesity or malnutrition.

3. Sperm Quality of the Male Rabbit. Low fertility rates in female rabbits are not solely dependent on the female; the male rabbit's contribution should not be overlooked. For instance, poor sperm quality can be a significant issue. Extreme temperatures during summer and winter can affect the testicular function of males. Additionally, the misuse of medications may damage the testicular tissue. Owners must pay close attention to these factors to prevent such issues.

4. Light Duration and Intensity. Light plays a crucial role in regulating reproductive functions in rabbits. Studies have shown that female rabbits require 16 hours of light daily. However, during autumn and winter, the light duration decreases sharply, especially during rainy or foggy weather. Besides light duration, the intensity of light also affects reproductive function. If rabbits are not receiving adequate light due to unavoidable factors, artificial lighting may be necessary.

5. Climate. Climate is another vital factor influencing rabbit reproduction. Under sunny, welllit, and moderate temperatures, the estrous rate in female rabbits is highest, and the estrus period is longer. In contrast, during heavy rain or cloudy weather, the estrus period may shorten or cease altogether. Therefore, when breeding rabbits, owners should consider the weather conditions.

Tip from Oxygen Pet Doctor: There are many factors that can affect rabbit reproductive function, and the abovementioned are just a few common ones. For issues related to low estrous rate and fertility in female rabbits, owners should identify the specific causes and seek targeted solutions to effectively resolve the problem.