Breeding and Laying Season. Under ordinary farm conditions where the ducks receive only fairly good care and feed the laying does not begin to any extent until February or March. With exceptional care the ducks will begin to lay in January and a few may even lay in December. The ducks lay very persistently and continue their laying until hot weather sets in or usually about the first of July. They gradually let up in their laying until it ceases almost entirely soon after that date. The breeding season is at its height in the months of April and May. At this time the fertility will run best and the results in hatching will be most satisfactory. However, it is possible to continue to hatch the duck eggs which are produced with fair results as long as the ducks continue to lay.
Management of Breeders.
Housing. Some sort of house or shelter must be provided for the breeding flock. Any available shed or a part of the poultry house may be utilized for this purpose. No special requirements are necessary except that the house should provide sufficient ventilation. This is best furnished by means of a window and in addition, an opening in the front of the house should be provided which can be closed by means of a curtain during severe winter weather. A board floor is not necessary if the dirt floor is filled up 6 or 8 inches above the ground level outside the house. The floors should be provided with an abundance of litter which is usually changed only once or twice during the year. As the litter tends to become dirty more litter must be added. No equipment is necessary in the houses as the birds rest on the floor and lay their eggs anywhere about the house or wherever they may make their nests. The house should be so arranged that the ducks can be shut in at night and can be kept there until they have finished laying in the morning. As most of the duck eggs are laid early in the morning they can be let out by 8 or 9 o'clock in the summer. If let out earlier than this they are likely to lay some of their eggs in the pond or stream to which they have access and these would be lost.
Feeding. On many farms the breeding flock of ducks is fed on the same ration which is given the farm fowls. However, better results will be obtained if they are given special feeds. After the laying season is over the breeding ducks can be fed sparingly on a mash consisting of one part by weight corn meal, 2 parts bran, 1 part low grade wheat flour, 1 part green feed, 8% beef scrap and 3% oyster shell. This mash is mixed up with water until it has a consistency just between sticky and crumbly. It should never be fed in a sloppy condition. A feed of this mash should be given in the morning and at night and during the long days of summer it is well also to give a light feed of cracked corn or mixed grains in the middle of the day. However, judgment must be used in feeding ducks especially if they have range over which they can roam where they can pick up more or less animal feed and other material. In this case it is not necessary to feed nearly so much. Another mash which may be used instead of the one given consists of 3 parts by measure of corn meal, 4 parts bran, 2 parts low grade wheat flour, three-fourths part beef scrap and 2 parts green feed with a supply of oyster shell.
Along about December 1 the feed should be changed with the idea of inducing egg production. A feed consisting of one part by weight corn meal, 1 part low grade flour or middlings, 1 part bran, 15% beef scrap, 15% vegetables or green feed together with oyster shell should be fed morning and evening and in addition a feed consisting of corn and wheat may be given at noon in a quantity of about one quart for each 30 ducks. As much mash should be given them at the morning and evening feed as they will clean up.
Another good mash feed which may be used consists of 2 parts by weight of bran, 2 parts middlings, 2 parts corn meal, 1 part beef scrap, 1 part ground oats and one-tenth of the total weight sand. In addition, of course, green feed must be added to the ration if it is not available at all times in the yard. This mash is fed in the morning and in the evening. The noon feed consists of 1 part by weight of corn and 2 parts oats. Where green feed is not available and must be supplied, cut clover, alfalfa, rye, oats and corn may be utilized cut up into short pieces and mixed in the mash. The mash should be fed either to breeding stock or to ducklings on flat trays or boards rather than in troughs as the ducks can get at it better in this form. It must be kept in mind that while ducks are good egg producers during the laying and breeding season they will not lay any great number of eggs unless they are fed for this purpose. For rations used on commercial duck farms see [Chapter IV].
Water. It is important that a plentiful supply of drinking water be available to the ducks. A fresh supply must be provided at each feeding time before the feed is thrown to the ducks as they like to eat and drink alternately when feeding. Where the breeding ducks have access to a stream or pond of fresh water it is not necessary to provide any other supply of drinking water.
Where water is available in which the ducks can swim it is essential to see that provision is made so that the ducks can get in and out of the water easily. If this is not done they may become exhausted and unable to climb out or they may become partially cramped when the water is very cold with the result that they will drown. If given access to water in which they can swim during cold weather it is necessary to be on the look-out to see that the ducks do not freeze fast to the ground when they come out of the water.
Yards. Where yards are provided for ducks poultry netting about 2 feet high is ordinarily used. This will confine most of the breeds but higher fences even 5 or 6 feet high must be provided for the breeds which fly readily such as the Muscovy, Call, East India, Mallard, Wood and Mandarin. In some cases it is even necessary to cover over the tops of the yards in order to keep the birds from flying out or to pinion the birds, that is, to cut off the outermost joint of one wing. The netting used for yards should be strung on posts set in the ground and the lower edge should be pegged down so that the birds cannot get under it.
Care of Eggs for Hatching. Duck eggs for hatching must be gathered each day and should be put in some cool place to be held until they are set. They should be turned daily, the same as hens' eggs and the general care is exactly similar. It does not, however, pay to keep duck eggs as long before setting them as they spoil more quickly than hens' eggs. In fact, it is best to set duck eggs when they are not over a week old if this can be arranged.