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Incubation Troubleshooting |
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Wednesday, 16 July 2008 |
| | |  Glossary: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | var months=new Array(13); months[1]="January"; months[2]="February"; months[3]="March"; months[4]="April"; months[5]="May"; months[6]="June"; months[7]="July"; months[8]="August"; months[9]="September"; months[10]="October"; months[11]="November"; months[12]="December"; var time=new Date(); var lmonth=months[time.getMonth() + 1]; var date=time.getDate(); var year=time.getYear(); if (year < 2000) year = year + 1900; document.write(" " + lmonth + " "); document.write(date + ", " + year + ""); // End --> July 16, 2008 | | | | |
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times | | | | | | Incubation Troubleshooting | Read the list of symptoms below and see if a problem you are having is shown. If it isn't, try posting your problem on the "Health Forum" on this site and you will get an answer there! 
Symptoms | Probable Cause | Corrective Measures | | Clear Eggs with no embryonic development (infertiles) | Males undernourished | Follow a recommended feeding program to provide adequate nutrition. Replace underweight males with vigorous ones | | | Too few males | Increase the number of males in the flock. | | | Seasonal decline in fertility | Use young cockerels more resistant to environmental stress. | | | Competition among breeding males | Do not use too many males. Rear all males together. Place temporary partitions within large pens. | | | Diseased flock | Conduct an approved disease control program. | | | Frozen combs and wattles | Provide comfortable housing. Properly select and maintain drinking fountains. | | | Old males | Replace with younger males. | | | Selected mating in pens | Artificially inseminate infertile hens. Replace males in the pen/house. | | | Male sterility | Replace males in the pen/house. | | | Crowded breeders | Provide recommended floor space, at least 3 ft²/bird. | | | Improper artificial insemination techniques or use of old/over-diluted semen. | Follow recommendations of primary breeder company. | | | Eggs damaged by environment | Gather eggs frequently (at least once daily). | | | Eggs stored too long or incorrectly | Store eggs at 50-60 degrees F. and 60% relative humidity. Incubate eggs within 7 days of lay. | Symptoms | Probable Cause | Corrective Measures | | Blood rings | Improper storage | Follow recommended egg storage and gathering recommendations. | | | Improper incubation temperatures | Check thermometer accuracy and incubator functions. Follow recommended temperature settings. | | | Improper breeder nutrition | Feed breeders a diet with balanced nutrient levels. | | | Improper fumigation | Follow fumigation recommendations. | Symptoms | Probable Cause | Corrective Measures | | Many dead embryos at early stages | Improper incubation temperatures (usually too high) | Follow recommended incubation temperatures. | | | Improper egg turning | Turn at least 3 times daily. | | | Inherited low hatchability | Avoid cross breeding. May need to secure different breeding stock. | | | Improper ventilation | Increase ventilation rate in incubator and/or room, but avoid drafts. Add oxygen at high altitudes. | | | Pullorum disease or other salmonelloses | Use eggs from disease-free sources. Have NPIP representatives blood-test the breeder flock. | | | Improper nutrition of breeders | Provide a well-balanced nutritional diet to breeders. | Symptoms | Probable Cause | Corrective Measures | | Chicks fully formed, but dead without piping | Low average humidity | Maintain recommended humidity for species of bird incubated. | | | Improper incubation temperature | Check thermometer accuracy and incubator functions. Follow recommended temperature settings. | | | Improper ventilation in incubator | Adjust ventilation to provide optimum moisture-loss rate from egg during incubation. | | | Improper turning of eggs | Turn eggs at least three times daily until 3 days prior to hatching. | | | Chilling of eggs | Gather eggs frequently and store under proper conditions. | | | Diseased or poorly conditioned breeder flock | Conduct a good disease control and breeder management program. Use a well-balanced nutritional diet. | Symptoms | Probable Cause | Corrective Measures | | Piped eggs, but died without hatching | Insufficient moisture | Increase humidity (wet-bulb temperature) during the hatching period. | | | Improper ventilation | Increase ventilation rate in incubator and/or room, but avoid drafts. | | | Improper setting of eggs causing malpositioned embryos | Set eggs with small end down. Turn eggs properly but avoid turning within 3 days of hatching. | Symptoms | Probable Cause | Corrective Measures | | Early hatching (may have bloody navels) | High incubation temperatures | Follow recommended incubation temperatures. Check equipment for proper function. Guard against electrical surges or high incubator room temperatures. | | | Improper egg storage | Store eggs at 50-60 degrees F. and 60% R.H. Turn at least 3 times daily. |
Symptoms | Probable Cause | Corrective Measures | | Late hatching or not hatching uniformly | Low incubation temperatures | Follow recommended incubation temperatures. | | | Warm and cool spots in incubator due to faulty design | Contact incubator company or obtain a different incubator design. | | | Old or improperly stored eggs | Gather eggs frequently, cool immediately and store eggs properly. Do not store longer than 7 days. | Symptoms | Probable Cause | Corrective Measures | | Sticky embryos (embryos may be smeared with egg contents) | High average incubation humidity | Follow recommended incubation humidity. Check size of air cell as an indicator for adjusting humidity condition. | | | Low incubation temperature | Follow recommended temperature settings. | | | Lethal genes | Avoid cross breeding. May need to secure different breeding stock. | | | Inadequate ventilation | Increase ventilation rate in incubator and/or room, but avoid drafts. | | | Improper fumigation of eggs | Fumigate eggs by following the procedure carefully. | Symptoms | Probable Cause | Corrective Measures | | Embryos sticking or adhering to shell | Low incubation humidity (especially during hatching) | Increase incubation humidity by increasing water evaporation. Embryos dried too much. | | | Excessive ventilation rate | Reduce ventilation rate but maintain minimum air exchange to prevent suffocation of embryos. | Symptoms | Probable Cause | Corrective Measures | | Crippled and malformed chicks | Improper incubation temperatures (usually too high) | Follow recommended incubation temperatures. | | | Low incubation humidity | Increase incubation humidity by increasing water evaporation. Embryos dried too much. | | | Improper egg setting position or turning during incubation | Set eggs with small ends down. Turn eggs at least 3 times daily. Do not turn eggs within 3 days of hatching. | | | Heredity | Proper culling and breeding practices will reduce problems. | | | Slick hatching trays | Use trays with wire floors or place crinoline on hatching surface. | | | Improper nutrition of breeders | Provide a well-balanced nutritional diet to breeders. | Symptoms | Probable Cause | Corrective Measures | | Abnormal, weak, or small chicks | High incubation or hatching temperatures | Follow recommended incubation temperatures. | | | Small eggs hatch small chicks | Set only standard or large sized eggs. | | | Insufficient incubation humidity | Maintain recommended humidity for species of bird incubated. | | | Improper ventilation in hatcher unit | Increase ventilation rate, but avoid drafts. | | | Diseased or poorly conditioned breeder flock | Use eggs from disease-free sources only. Have NPIP representatives blood-test the breeder flock. | | | Improper nutrition of breeders | Provide a well-balanced nutritional diet to breeders (especially vitamin levels). | | | Excessive fumigation in hatcher | Fumigate using proper procedures. | Symptoms | Probable Cause | Corrective Measures | | Chicks with labored breathing | Excessive use of fumigant | Follow recommended fumigation procedures. | | | Respiratory diseases | Check disease status of breeder flock. Conduct a thorough cleanup and disinfection of incubator and hatching facilities. | Symptoms | Probable Cause | Corrective Measures | | Large, soft-bodied mushy chicks; dead on trays; bad odor | Low average incubation temperature | Follow recommended incubation temperatures. | | | Poor ventilation | Increase ventilation rate in incubator and/or room, but avoid drafts. | | | Navel infection (Omphalitis) | Clean and disinfect incubator and hatching units between settings of eggs. Maintain dry hatching trays. Properly store and fumigate eggs. | Symptoms | Probable Cause | Corrective Measures | | Rough or unhealed navels | Improper incubation temperatures | Follow recommended incubation temperatures. | | | High hatching humidity | Maintain proper humidity. | | | Navel infection (Omphalitis) | Clean and disinfect incubator and hatching units between settings of eggs. Maintain dry hatching trays. Properly store and fumigate eggs. | Symptoms | Probable Cause | Corrective Measures | | Short down on chicks | High incubation temperatures | Follow recommended incubation temperatures. | | | Low incubation humidity | Follow suggestions to correct insufficient humidity. | | | Excessive ventilation | Reduce vent openings to restrict but maintain adequate air exchange. | | | Holding chicks in hatcher too long after hatching | Remove all chicks as soon as fluffy but within 24 hours after hatching. | Symptoms | Probable Cause | Corrective Measures | | Excessive yellow colouring of down | Improper and excessive fumigation in hatcher unit | Follow recommended fumigation procedures. | | | Back To Home | | | | oF <=> oC | in <=> cm | G <=> L | |
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