4' 12 On the Value of the Oil in Linseed-cahe as a Food for Stoclt. 
increased only 1,002 lbs. It will be seen, also, that individual 
sheep of the former pen eating the more oil gave in almost every 
instance a much higher increase than the others. For instance, 
one sheep of this pen increased altogether 51^ lbs., and ten 
others increased each 40 lbs., or above that weight, whilst none 
increased less than 27 lbs. Per contra, of the sheep consuming 
the cake low in oil, only two of them increased 40 lbs., or above, 
whilst there were two sheep in this pen of which the gain was 
as low as 22 lbs. and 23 lbs. respectively. It seems very clear 
from these figures that when there was capacity in a sheep to i:»ut 
on flesh rapidly the larger quantity of oil in the cake told very 
considerably indeed. Table III., on page 413, gives a summary 
of the results of the food consumed by the sheep in the two pens, 
per head and per 100 lbs. live-weight ; also the increase per 
head and jDer 100 lbs. live-weight; and the particulars of food 
consumed to produce 100 lbs. increase, both in the fresh and 
dry state. At the same time, and for comparison with the 
above, is given a summary of experiments upon Southdown 
sheep carried out by Messrs. Lawes and Gilbert, and published 
in the Journal of the Royal Agricultural Society nearly forty 
j'ears ago.' 
Confining at present our attention to the Whitlingham 
sheep, it will be seen that the average increase per head of 
those fed upon the low oil-cake was 33J lbs., whilst the cor- 
responding gain of the sheep fed upon the high oil-cake was 
38|^ lbs. — a difference of 4J lbs. in favour of the high oil-cake. 
The increase per head per week of the sheep in the low oil-cake 
pen was 2*09 lbs. ; of those having the more oily food 2'39 lbs. 
Or basing the calculation upon the 100 lbs. of average live- 
weight per sheep, and covering in the reckoning the whole 
period of test, the sheep fed with the less oily cake gave a 
weekly increase of 1-82, or a little over 1^ lb., per head, whilst 
the sheep of the other pen increased per week per head 2-04, or 
a trifle over 2 lbs. 
Of the fresh food consumed by each lot of sheep, that given 
in limited quantities — viz. the oil-cake and hay — and that given 
ad libitum — viz. the swedes, the consumption was, in both cases, 
almost exactly alike. The low oil-cake sheep ate — per 100 lbs. 
live-weight — rather more cake and hay, and nearly li lb. per week 
more of fresh swedes than the othei's. Upon examination, how- 
ever, of the two columns which give the consumption of fodder 
when calculated as dry, it will be seen that the amount of it — 
when so reckoned — eaten per head and per 100 lbs. live-weight. 
' See Journal, Vol. XII. 1st Series (1851), pp. 4M ct tcq^. 
