Hen Reproductive Health: What Every Poultry Keeper Should Know
Reproductive health is at the heart of every productive hen. Whether you’re raising chickens for eggs or breeding, understanding how a hen’s reproductive system works and how to keep healthy is essential.
When hens are healthy, they lay consistently, produce high-quality eggs, and avoid serious reproductive diseases.
A hen’s reproductive system consists of two main parts:
1. The ovary
2. The oviduct
Egg formation process:
1. Yolk release (ovulation): Ovary releases mature yolk.
2. Fertilization: Occurs at infundibulum.
3. Albumen formation: In magnum
4. Shell membrane: In isthmus
5. Shell formation and pigment: In uterus
6. Laying: Completed egg is laid through cloaca.
Common reproductive disorders:
1. Soft-shelled or shell less eggs: It is due to calcium deficiency, stress and reproductive aging. It is more common in older hens.
2. Internal laying/egg yolk peritonitis: Yolk is released into the body cavity instead of oviduct, which leads to infection and inflammation. Symptoms included swollen abdomen and reduced egg laying.
3. Egg binding: It occurs when an egg stuck in the oviduct. It is life threating if not treated timely. Symptoms included lethargy, lack of appetite and often sitting.
4. Reproductive cancer and tumors
5. Prolapse
Tips for maintaining reproductive health:
1. Balanced nutrition: Ensure bird get adequate levels of calcium, phosphorus and vitamin D3. Provide supplements which fulfil the necessity of nutrition.
2. Clean, safe environment: Reduce the stress by ensuring hygiene, predator protection and space. Because stress weakens immune and disrupt laying cycle.
3. Lighting control: Proper lighting control should be provided to support healthy ovulation. Sudden changes in light exposure may disrupt egg laying cycles.
4. Regular health checks: Daily changes in behaviour, egg quality and posture must be observed.
Note on aging hens:
As hen ages, their efficiency of egg release declines naturally. While they continue to lay, the egg may become:
- Less frequent
- Larger or irregular
- More prone to defects like double yolks or thin shells.
Older hens are also more prone to reproductive health problems like tumors and internal laying.
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