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- #15,681
I have a question. I keep trying to hatch my BBB eggs and I keep getting to the pea sized disc of blood vessels stage and then nothing. I sent some to emmalyn and she had the same experience. Any thoughts? I think I was sold a very geriatric pair of BBB's. (Buff Brahma Bantams)
- Sign: Eggs candle clear; broken out eggs show blood ring or small embryo that died before 3 days of incubation; no dark eye visible. Causes:
- Eggs stored too long or under improper temperature.
- Fumigation improper -- too severe or done between 12 and 96 h of incubation.
- High temperature in early incubation.
- Low temperature in early incubation.
- Eggs damaged during transport by jarring, etc.
- Breeder flock diseases.
- Old breeders.
- Embryological development accidents.
- Inbreeding, chromosome abnormalities.
- Severe nutritional deficiencies, e.g., biotin, vitamin A, copper, vitamin E, boron, or pantothenic acid.
- Frequently associated with a high incidence of infertility.
- Drugs, toxins, or pesticides.
- Contamination.
- Embryos less developed at oviposition, i.e., pre-endoderm or very early endoderm formation.
- Sign: Dead embryos; 3 to 6 days of incubation; yolk sac circulatory system present, embryo on left side, no egg tooth. Causes:
- See causes 3.1-14
- Lack of ventilation, or sealed shells, carbon dioxide >1%.
- Improper turning -- <1/h or >6/h; improper turning angle.
- Vitamin deficiencies -- vitamin E, riboflavin, biotin, pantothenic acid, or linoleic acid.
I will add..... have you wormed your chickens lately and are you sure they do not have lice mites or other parasites?