THE FEEDS Sf)? 



The Liquids. — One of the marks of recent progress in 

 feeding practice has been tlie increasing attention given 

 to supplying all classes of stock with abundant and suitable 

 drink. 



l)e\'elopnients in connection with feeding under artificial 

 lights \m\e emphasized the necessity of ha\ing drink always 

 aA'aiiable, winter as well as summer, whenever the l>ir(ls are 

 off the perches. The growing knowledge concerning the 

 vitamins has given a further impetus to the use of milk as 

 a regular feature of rations for growing, laying and breeding 

 stock, as well as for fattening stock. 



Alilk (Butter). — Buttermilk is similar to skim milk, but has 

 a still higher feeding \alue. The amounts of digestible 

 nutrients found in 100 pounds of buttermilk, as estimated 

 from digestion experiments with skim milk with swine, are 

 3.84 pounds of protein, 1.05 pounds of fat, and .3.92 pounds of 

 nitrogen-free extract. It contains 0.7 pounds of ash and has 

 a nutritive ratio of 1 to 1.6. It contains no crude filjer and 

 an abundance of both vitamins. Dried and send-dried 

 i)Uttermilk are finding their way into the market but their 

 value for egg production has not been determined The 

 semi-solid milk is used in large quantities at packing houses 

 in Tuilk fattening Wliat effect the process of manufacture 

 has on the \'itam'n content has not been determined. 



Milk {Skim}. — "Skhn milk is being increasingly- recognized 

 as a valual)le poultry feed. Philips^ reports that Leghorn 

 pullets consumed an average of about 93 pounds of skim milk 

 a year. This amounts to nearly .5 tons or 1171 ga Ions for 

 each 100 hens. lie further found that when all the milk 

 the jjullets would drink was added to a. ration consisting 

 entirely of grains, it was at 30 cents per hundred, slightly 

 more expensive to feed than meat scraps at 12. .50 i)er Inmdred 

 jiounds. 



In later experiments with White Plymouth Pock ))ullets 

 he found the feeding \ alue of skini milk to l)e Sl.CJl per 

 hundred ])ounds as compared with a meat scrap Aalue of 

 $20.03 per hundred pounds. Pullets fed on a standard 



' Purdue Bullt-tm No. 182. 



