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Welcome to the poultry sectionThe aim of this page is to offer information on poultry rearing, breeding, feeding. The section below can be relevant for all types of fowl, ducks, geese, pheasants Hatching, Rearing, and Care of Young Poultry For the small poultry keeper there is the choice of two methods of hatching chicks - natural or artificial. The best idea is to gain experience and confidence in both. Hen eggs take 21 days to hatch, duck and turkey eggs 28 days, most goose eggs 28 - 30 days and Muscovy eggs 35 days. Some very small bantam eggs may be a day early and really large poultry such as Cochins may be a day extra. Natural hatching The broody should be taken off the nest once each day to feed, drink and defecate. Roughly the same time each day makes for a quieter bird as she is a creature of habit and may get restless if her regular time has passed. The hen should not be disturbed after the 18th day (for chicken eggs) and feed and water should be left within her reach but out of the reach of chicks. As soon as the hatch is finished, which may take from 24 hours up to three days, empty shells and unhatched eggs (these will rattle if you gently shake them beside your ear, but be careful they don't explode!) should be removed from the sitting box and any muck the hen may have produced. Try not to disturb her while the hatch is on, tempting though it is to see how many have hatched, as she needs to bond with her chicks and turn her sitting instinct into the more aggressive protective maternal instinct. Put a water container that the chicks cannot drown in (pebbles in a shallow dish work well) next to the nest so that any early chicks can drink. The yolk sac inside their bodies will sustain them for up to 48 hours, but provide chick crumbs anyway - see Rearing. Artificial hatching Follow the manufacturer's instructions for an incubator, but go easy on adding any water. It seems to be a common misconception that water needs adding during the incubation process. The egg must lose 13% of its weight during incubation and most of this weight is water loss, giving room for the chick to move around in the shell prior to hatching. Fertile eggs which do not hatch are frequently sticky inside as the incubation time has been too humid. Try and site the incubator in a place which does not vary much in average temperature. During the incubation process the eggs must be turned in order for the embryo to develop normally (the hen does this naturally). If turning by hand do so at least five times a day and turn the eggs end -over -end so that the chalazae (strings which hold the yolk stable) do not wind up, potentially damaging the embryo. If the incubator is an automatic turning one, turn off the mechanism 2 days before they are due to hatch, or stop turning them by hand at this time. A little hot water can be added when the eggs start to pip (the diamond-shaped start of the shell breaking) to keep the membrane moist. The chick pecks its way out of the broad end of the egg by means of the egg tooth which is on the end of its top beak. The egg tooth falls off soon after hatching. Chicks may take two days to hatch or they may all hatch at once. The latter is better, but not always possible. Most small incubators have a window in so that you do not have to take off the top to see inside. It is better to fill (or part fill) an incubator, hatch the eggs, clean it out and start again, unless you can set a few eggs each week, transferring those on the 18th day to a separate hatcher which then gets cleaned out each week or after each hatch. This avoids the build-up of harmful bacteria which can adversely affect the hatch. In order to make best use of incubator space (and broody hens for that matter) the eggs can be candled after seven days' incubation. This involves holding a bright torch to the broad end of each egg in a darkened room. If the egg is infertile you will be able to see just the shadow of the yoke. Rotate the egg slightly to make this move within it. If fertile, a spider shape of blood vessels will be seen on one side with the heart beating in the middle. If there is a ring of blood vessels with none in the centre the germ has died. The infertile eggs can be removed and fresh ones added if you are going to use a separate hatcher. Using just one incubator to set and hatch with eggs of different incubation ages is courting disaster as the humidity then becomes wrong for younger eggs if you add water for the hatching ones. Also, hatching eggs produce a huge amount of bacteria, so can infect younger embryos through the porous shell. If you candle the eggs at fourteen days and the embryo is growing as it should, the air sac should have a sharp distinction from the darker remainder of the egg. If only a small dark area can be seen the germ has most likely died and the border between that and the air sac is fuzzy. The air sac gradually gets larger as hatching date approaches and sometimes the chick can be seen bobbing away from the candling light. MARVEL AUTOMATIC TURNING INCUBATOR from Dingle Poultry & Farm Supplies
Incubating conditions Poor results are most commonly produced with improper control of temperature and/or humidity. Improper control means that the temperature or humidity is too high or too low for a sufficient length of time that it interferes with the normal growth and development of the embryo. Poor results also occur from improper ventilation, egg turning and sanitation of the machines or eggs. Obtain the best hatch by keeping the temperature at 100 degrees F. throughout the entire incubation period when using a forced-air incubator. Minor fluctuations (less than ½ degree) above or below 100 degrees are tolerated, but do not let the temperatures vary more than a total of 1 degree. Prolonged periods of high or low temperatures will alter hatching success. High temperatures are especially serious. A forced-air incubator that is too warm tends to produce early hatches. One that runs consistently cooler tends to produce late hatches. In both cases the total chicks hatched will be reduced. Maintain a still-air incubator at 102 degrees F. to compensate for the temperature layering within the incubator. Obtain the proper temperature reading by elevating the bulb of the thermometer to the same height as the top of the eggs when the eggs are laying horizontal. If the eggs are positioned in a vertical position, elevate the thermometer bulb to a point about ¼- to ½-inch below the top of the egg. The temperature is measured at the level where the embryos develop (at the top of the egg). Do not allow the thermometer's bulb to touch the eggs or incubator. Incorrect readings will result. Check the thermometer! Is it accurate? An error of one degree for 21 days can seriously interfere with embryonic growth. Check the incubator thermometer's accuracy by placing the bulb next to the bulb of a clinical (the kind used to measure body temperature) or good laboratory thermometer. Hold both under lukewarm tap water and compare the readings. Compensate for any variation of the incubating thermometer by increasing or decreasing by the amount of variation. A thermometer with a split or gapped mercury column will not give an accurate reading, discard it. Humidity is carefully controlled to prevent unnecessary loss of egg moisture. The relative humidity in the incubator between setting and three days prior to hatching should remain at 58-60% or 84-86 degree F., wet-bulb. When hatching, the humidity is increased to 65% relative humidity or more. An excellent method to determine correct humidity is to candle the eggs at various stages of incubation. The normal size of the air cell after 7, 14, and 18 days of incubation for a chicken egg is shown. Necessary humidity adjustments can be made as a result of the candling inspection. The egg's weight must decrease by 12% during incubation if good hatches are expected. Frequently there is confusion as to how the measurement of humidity is expressed. Most persons in the incubator industry refer to the level of humidity in terms of degrees F., (wet-bulb) rather than percent relative humidity. The two terms are interconvertible and actual humidity depends upon the temperature (F.) as measured with a dry-bulb thermometer. Conversion of the two humidity measurements can be made using the following table:
¹ Dry-bulb temperatures are shown horizontally for common incubation values.Rarely is the humidity too high in properly ventilated still-air incubators. The water pan area should be equivalent to one-half the floor surface area or more. Increased ventilation during the last few days of incubation and hatching may necessitate the addition of another pan of water or a wet sponge. Humidity is maintained by increasing the exposed water surface area. Ventilation is very important during the incubation process. While the embryo is developing, oxygen enters the egg through the shell and carbon dioxide escapes in the same manner. As the chicks hatch, they require an increased supply of fresh oxygen. As embryos grow, the air vent openings are gradually opened to satisfy increased embryonic oxygen demand. Care must be taken to maintain humidity during the hatching period. Unobstructed ventilation holes, both above and below the eggs, are essential for proper air exchange. What must be done if the power goes off during incubation? A proper response depends on several factors, some of which include the temperature of the room in which the incubator is located, the number of eggs in the machine, and whether the eggs are in the early or late stage of incubation. The two most important considerations in this situation are to (1) keep the eggs from overheating and (2) be sure they have an adequate oxygen supply. The longer the eggs incubate and the greater the number of eggs in the incubator, the greater the chance that you will experience overheating and suffocation of the embryos. If the room in which the incubator is located is hot and stuffy, you will have to react more quickly to power outages than if the room is kept at 75 degrees and is well ventilated. The most effective guard against overheating and suffocation is to open the door of the incubator or hatcher. Whether the door is opened slightly or fully and the length of time it is left open depends on the factors mentioned earlier. Eggs must be turned at least 4-6 times daily during the incubation period. Do not turn eggs during the last three days before hatching. The embryos are moving into hatching position and need no turning. Keep the incubator closed during hatching to maintain proper temperature and humidity. The air vents should be almost fully open during the latter stages of hatching. The eggs are initially set in the incubator with the large end up or horizontally with the large end slightly elevated. This enables the embryo to remain oriented in a proper position for hatching. Never set eggs with the small end upward. In a still-air incubator, where the eggs are turned by hand, it may be helpful to place an "X" on one side of each egg and an "O" on the other side, using a pencil. This serves as an aide to determine whether all eggs are turned. When turning, be sure your hands are free of all greasy or dusty substances. Eggs soiled with oils suffer from reduced hatchability. Take extra precautions when turning eggs during the first week of incubation. The developing embryos have delicate blood vessels that rupture easily when severely jarred or shaken, thus killing the embryo. The following table lists incubation requirements for various species of fowl.
¹ Measured at degrees F. in a forced-air incubator. For still-air incubators,
add 2-3 degrees F. Rearing - day old to 6-8 weeks With modern equipment rearing chickens is a relatively easy process for the small poultry keeper to master. If you have a broody hen to do it for you, then all you will need to do is to provide her with chick crumbs, water and shelter against wind, rain, and sun, preferably with a wired over run to start with so that magpies and crows cannot take the chicks. Chick crumbs need to be in a container which she can neither tip over nor scratch out. Water needs to be in a container that the chicks cannot drown in. Put some grain feed for the hen out of reach of the chicks. She may break the grain into small pieces for them. Leave the hen with the chicks for about four weeks and then take her away, but don't take the chicks away as it will unsettle them or set them back and they need all the encouragement they can get. They can be transferred to a larger house and/or run when they are about eight weeks. Incubated chicks need a heat lamp to keep them warm, preferably one with a ceramic bulb so that they have heat and not light. This avoids feather pecking as they have natural light and darkness. Some of the lighter or more nervous breeds certainly do better with some hours of darkness. Site the heat lamp in a draught-free place with a generous covering of shavings on the floor or make a circle using an 8' (2.4m) length of hardboard about 18" (45cm) high around it. You can also use a large rectangular cardboard box. It needs to be rectangular so that the lamp is at one end and the chicks can regulate their own temperature. Turn the heat lamp on two days before the chicks are due to hatch. It should be far enough off the shavings so that the temperature under it is about 39 °C (102°F). If the chicks are too hot they will scatter to the edges, panting. If they are too cold they will huddle in the middle, cheeping loudly. The ideal is to have a small empty circle just under the lamp. Transfer the chicks from the incubator when they have dried and fluffed up. Dip their beaks in the, again, drown-proof water and place them under the lamp.
Rearing - 8 weeks onwards Young stock should be kept under observation the whole of their development period. Those with obvious physical defects should be removed. This will mean cleaner houses and more room and for the others to develop satisfactorily. Take precautions (by putting cardboard to round off corners) when moving stock to new houses so that they do not huddle in corners and smother. Continue to feed best quality rations - see Feeding. Sexing Feeding Poultry Housing Poultry housing is used by the birds for roosting, laying, and shelter. The welfare of the birds is entirely in your hands and certain principles must therefore be observed. Space Ventilation Window Materials Nestboxes Perches Security Litter Cleaning Buy or make? Types of housing A good book I can recommend for incubation is
Do you keep poultry
and want a cheap guide before you spend lots of money on incubators etc then
this is the E Book for you @ only Euro 2.50 articles included
Selection of Hatching Eggs, Egg Care and Storage, Rearing - day old
to 6-8 weeks,
You have incubated
your eggs and the birds are approx 8 weeks old or purchased birds what do you do now this is
the E Book for you @ only Euro 2.50 articles included
Rearing - 8 weeks onwards, Sexing, Feeding, Poultry Housing, Poultry
Diseases, location of Coop, Predator Control
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This site was last updated 03-03-2009