“The disadvantages which I have thus to detail to you, arise from the novel disease with which the sheep are affected. It appeared after the first lambing, and within four months from the time of my occupation of the land in question. Its unaccountable and destructive nature renders my selection utterly useless. The nature of the disease, as far as I have yet remarked, is as follows:—The sheep, in the first place, devour the earth ravenously, the pasture being at the same time luxuriant, principally rib-grass, and other succulent herbs; they become speedily emaciated, from this unnatural diet, more particularly as the lambing season advances, and when lambing commences: the other ewes surround the one lambing, and devour the young as they emerge from the mother. The lambs saved through the care of the shepherds become poverty stricken, from the low condition of the mothers, and generally die before they become a month old. Thus, instead of having twelve hundred lambs this season, as my regular increase, I do not count four hundred; besides a very great decrease from mortality in the maiden sheep, originally purchased at high prices. The number of shepherds required being at the same time thrice beyond the proportion usual in the colony.”—November 1832.
The result was, that as the regulations of the government could not permit the grant to be changed, Mr. D. was obliged to sell it as a cattle-station, and purchase land in a more favourable part of the colony for his flocks.
In December he removed them, as a temporary measure, to Yas Plains; some of the ewes lambed after they had been removed, but the morbid appetite had ceased with the exciting cause, and the lambs were not attacked by the other ewes.
At the Murrumbidgee country I saw one of the little lambs, which had just been saved from the ravenous ewes, and had its tail bitten off before it was rescued. The circumstance was as follows, which shows the mode of attack:—The ewe was lambing, when six or eight others rushed towards her, but were prevented from coming near by the shepherds; they would not, however, go away, but kept following; and as soon as the ewe dropped her lamb (the shepherds having been engaged for the moment in driving away another party from another lambing ewe) it was attacked, the tail was bitten, but they were prevented from proceeding further by the immediate return of the shepherds.
They also evince as much eagerness to devour the “cleanings,” or after-birth, if not prevented; but if the little animal has been licked clean by the mother, and is dry, it may be placed in the hurdles amongst the other ewes, without their being attacked or injured. Thus showing that the salt nature of the liquor amnii, which at that time covers the young one, is the principal exciting cause for this extraordinary propensity to destroy, that appetite being excited by having previously eaten the saline earth from the “water holes.”
At the places where this destruction to the hopes of the wool-grower takes place, the pasturage is luxuriant; and the situations would be selected, by a person ignorant of the before-mentioned circumstances, as some of the finest sheep-runs in the colony.
The mother will not devour her own progeny, but will sometimes (which is not unfrequent in maiden ewes) not take to the lambs, but forsake them; until the shepherds hurdling the mother and young one together, the mother at last acknowledges her young.
It is not uncommon, however, for them to follow other ewes, attack and devour the lambs brought forth by them, in as ravenous a manner as the others would have devoured their young.