L36 BUREAU OF ANIMAL INDU8TBY. 
ili.-\ keep the digestive system in better order, and thus enable the 
animal actually to digest a greater percentage of his feed. The same 
fact has been noticed when roots and green feed are fed. Pasturing 
on rape, alfalfa, <>!• th<- grasses probably has a similar effect. 
The effect of dairy by-products on the carcass i*> oneof the most 
Important results <>f such feeding. Ii is generally admitted that, 
while excellent hams ;ui<1 hat-on may be produced without dairy 
by-products, the use of these by-products will result in pork of a 
more nearly uniform high quality. 
NIK ll.KMV. VALUE OF DAIRY BY-PRODUCTS, 
Comparing grain and milk rations iviih rations of grain atom <iml 
milk alone, — Linfield* reports the results of a series of investigations 
at the I'tali station. In all, seven distinct experiments are given. 
Except in one experiment, the pigs were confined <>n the north side of 
a barn, were furnished plenty <»r bedding, and allowed a small run. 
When grain alone was fed it was mixed with water to form a thin slop. 
and when milk was fed with grain it was mixed in the same manner. 
The milk was never given sour. The hogs had access to pure water. 
had charcoal and ashes in the pens, and were fed twice daily. These 
experiments were conducted primarily with the object of comparing 
the value of feeding a combination of grain and skim milk with both 
grain alone and skim milk alone. They varied somewhat in details. 
and some difficulty seems to have been experienced in obtaining as 
much milk as the circumstances required. 
The grain was fed in various combinations with the milk, and was 
usually that which was available in that section for feeding purposes. 
Ii consisted of equal parts of barley and bran, corn and wheat, wheat 
and bran, and corn meal and bran, and in t wo experiments ground 
wheat. Whey was fed in the fifth, sixth, and seventh experiments; 
ii formed not over l_ percent of the by-product in the* fifth, but was 
as much as W percenl in the last two. it was a matter of remark 
that the results i;i these experiments were fully equal t<> those where 
skim milk was fed throughout the entire feeding period, winch shows 
that whey has quite a high feeding value/' The quantity of skim 
milk in the lots fed milk and grain in comparison with grain alone 
oi- milk alone varied from I to 6 pounds of milk per pound of grain 
fed at the beginning of the experiment, the amount of milk being 
gradually decreased with the age and weight of the pigs. The pigs 
ih<'<l were well bred, usually being Berkshires, Berkshire grades, or 
Poland China grades. The following table is a summary of these 
experiments. 
.:. N<>. 57. 
• Ontario Agricultural College experiments with Bweet and bout whey, 
PI-. t »;. l iv 
