Part 7 (2/2)
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CHAPTER VII
THE SOW'S UDDER
One of the most important points in connection with the reproduction of the species of our various domestic animals is the provision of a full supply of milk for the young in the early portion of their existence.
Nature herself has set us a good example in a duplicated source of milk supply even amongst animals which usually produce only one animal at a birth. If this duplication be necessary under such conditions, it must be imperative on us to select those sow pigs which are intended for breeding pigs which possess a well-formed udder, having a full supply of teats, and these of good shape and properly placed on the belly of the sow. Not only is this necessary to ensure the rearing of a fairly numerous litter of pigs in a satisfactory manner, but it is held that the number of teats possessed by a sow indicates to a remarkable extent the probable degree of prolificacy of the sow. One can readily understand that nature would not be likely to endow a sow with the power to produce a larger number of young at each birth than she would be able to rear. Of course it may be said that the sow of the present day is not as nature first made her, in that, by selection and by feeding, the number of pigs produced at each birth is now so much larger than the litters of the wild sows, which have some seven or eight teats and farrow at each litter a similar number of pigs. On the other hand, neither the number of teats nor of the young is fixed either in the domesticated sow, or the sow in a wild state, so that by continued selection we are able to permanently increase, within limits, the production of larger litters and the increased supply of milk for their sustenance when young.
The provision of a suitable udder is even of more importance with the domesticated than with the sow running wild, since the latter produces each year one litter only, and that in the season of the year when the young are less dependent on their dams; whereas the domesticated sow is expected to rear at least two litters per year, and frequently owing to want of care on the part of the owner the young pigs are farrowed at the most unfavourable time of the year.
Apart from the provision of a certain number of teats there is another point to be considered, the power of the sow to produce milk enough to satisfy the given number of pigs. This of course varies with each family or tribe of pigs, and even with the various members in it, so that to obtain the best results selection must be made of the produce of those sows which give the largest quant.i.ty of the most nutritious milk. There exists amongst pig keepers a difference of opinion as to the number of pigs each sow should be allowed to rear, probably the average of this number would be ten for a mature sow, and seven or eight for a first litter. If so, the selected sow pig should possess twelve teats, as frequently one of these may not give a full supply of milk from either natural or accidental causes. The teats should be regular in size and form. It is not uncommon to find one or more of the teats of a sow much smaller in size than the others. These smaller teats will produce a reduced quant.i.ty of milk, so that the pigling which is unfortunate enough to decide on making this small teat its very own--and each pigling is confined by the others to its own special teat--is certain to be less well developed than its brothers and sisters, even if it should succeed in surviving.
The necessity for the teats being placed equidistant the one from the other arises from the desirability of each pig having room to suck comfortably. Should two of the teats be closely placed the two pigs will probably fight, when not only will sores be caused on the cheeks of the pigs, but the milk in the teats not properly drawn will gradually cease to flow.
Another point of great importance is that the teats should commence as near as possible to the fore legs--this for two reasons: it gives more room for the pigs to suck as they grow larger; the other and more important one is that the teats most forward on the udder of the sow produce the larger quant.i.ty of milk, or milk of a better quality. It will be almost invariably found that the pigs sucking the foremost teats thrive the best.
It is advisable to avoid the selection of a female pig for breeding purposes from a sow which has large and coa.r.s.e teats, as these invariably accompany coa.r.s.eness of skin, bone, hair, and flesh, this in turn affects the sale value of the carcase. It will also be found that those sows with a neat and compact udder, with fine teats, will give more milk and a better quality than sows possessing a coa.r.s.e and flabby udder.
Another weakness to be avoided when selecting a sow pig for breeding purposes is that which is commonly termed a blind teat, since it is undoubtedly hereditary in addition to being useless for the purpose of rearing pigs. The normal teat projects boldly from the udder, whereas the blind teat is almost flat or on a level with the udder. In appearance it resembles a ring of skin with a depressed nipple in its centre. At the time of parturition the blind teat contains milk to the same extent as do the other teats, but it promptly dries up since it is impossible for the little pigs to extract the milk from it since the nipple recedes as soon as the pigling attempts to clasp it with its lips and tongue, instead of becoming more extended so that the little pig can suck the milk from it.
An ideal udder can be briefly described as one possessing at least twelve fully developed teats, the more the better--these should commence from a point as near the fore legs of the sow as possible, and be placed as nearly as possible an equal distance the one from the other.
Some persons hold that large teats and much loose skin are sure indications that the sow has proved to be a good milker. This is a mistaken view; it is with sows as with cows, the most prolific milkers are those with well formed and soft udders which almost disappear when the lactation period has pa.s.sed.
CHAPTER VIII
MATING THE YOUNG SOW
As in most other details in the management of our domesticated animals there exists a variety of opinion as to the age at which the young sow, or, as it is commonly locally termed, a gilt, yelt, yilt, hilt, elt, etc., should be mated with the boar. Perhaps the most important point to consider is the time of the year when the antic.i.p.ated pigs should arrive. If possible the period between the middle of the month of September and the middle of December should be avoided. The long nights and the short and dull days generally experienced during this period are most unsuitable for young pigs. Many litters of pigs farrowed in October are not any larger nor nearly as thrifty in the month of March as those farrowed during the early portion of January in the following year, and very frequently the loss amongst the October and November farrowed pigs from lameness, or, as it is commonly termed, cramp, is very large. An attempt should be made so that the two litters which should be bred each year from the sow arrive so that they are weaned during the longer and brighter days of the year; thus a sow which farrows in the beginning of February may be expected to farrow again in July. The weather is sometimes rather cold for little pigs early in the year, but it is surprising how little they are affected by it providing the sow furnishes a good supply of milk and the bedding is dry and plentiful.
The pigs farrowed in the months of January and February are generally the most profitable, as they will be ready for the consumption of the separated milk, b.u.t.ter milk, whey, etc., which is generally abundant in the month of May in districts where dairying and cheese making are followed. These pigs are also ready for turning out to gra.s.s in April or May, or as soon as the weather is suitable, and the gra.s.s has grown sufficiently. These young pigs will grow and thrive splendidly providing that some additional food is fed to them and shelter provided.
This natural system of pig raising is of great benefit to those pigs which are intended for breeding purposes and was consistently followed by the writer from the year 1863. It was by no means a new plan even at that period, although strange claims have recently been made that the system is a novel one and originated in the fertile brain of one or two enthusiasts who have gone the whole hog in pig breeding. In the middle of the last century it was quite a common practice in parts of the counties of Cambridge, Ess.e.x, and Suffolk to graze the seeds which comprised clovers, trefoils, etc., with pigs which received in addition extra food, such as peas or beans in accordance with the amount of vegetable food obtainable or the purpose for which the pigs were required; those intended for pork receiving the larger supply.
Although it may not be possible to allow the young boar pigs to have their liberty after they become five months old, yet the sow pigs will grow and develop far better in the field if properly fed than they will in an inclosed sty; further, the young pigs which they produce will be much more l.u.s.ty than if the sows had been kept in close confinement.
Although the sow pig will generally come in heat when she is about six months old, it is advisable that she should not be mated until she is some eight months old, so that her first litter of pigs is not farrowed until she is about a year old, when she should be quite strong enough to rear a fair litter of pigs and also to grow and develop into a fully natured specimen of its breed.
In some districts where the breeding pigs are generally kept in confinement and high keeping is followed the sow pigs are mated with the boar at an earlier age, but the system has its disadvantages which more than outweigh the saving of the extra few weeks of the keep of the yelt ere she is put to the boar. This early mating is especially harmful if the number of the pigs in the first litter should be large. So few pig keepers have the hardihood to knock a certain portion of the too numerous litter on the head, and so reduce the number to say seven or eight, which most young sows should be able to rear fairly well and without any undue drain on the sow's system--but the whole of the large litter are left on the sow, which becomes very much reduced in condition, and checked in growth, whilst the too large litter of pigs are badly reared and frequently become a source of trouble and annoyance to the owner.
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