THE FEEDS 345 



of better breeding as regards egg jn-oduetioii, lie found tliat 

 when pullets were fed the same ration excei)t that one eoii- 

 tained 10 per eent meat scrap while tlie other contained no 

 animal feed, the meat scrap fed i)uliets ga\e an a\erage \n-<>- 

 duction of 179 eggs while the no animal feed birds ga\e an 

 average i)roduction of 59.35 eggs. 



It is sometimes claimed that hberal feeding of meat scrap 

 injures the fertility of eggs, but so far no definite data on the 

 matter has found its way into experimental reports. 



Tlie amounts of digestible nutrients found in 100 pounds 

 of meat scraj) of good cjuality, as determined by digestion 

 experiments with chickens, are 65.9 pounds of protein, 13.01 

 pounds of fat, and pounds of nitrogen-free extract. It 

 contains 4.1 pounds of ash, and has a nutriti\e ratio of 1 to 

 0.44 for chickens. It contains no crude fiber. 



Middlings {Wheat). — Wheat middlings are more finely 

 ground than either bran or shorts, and run lower in crude 

 fiber, ash, and protein, but higher in carbohydrates and fats. 

 They are frequently only a good grade of shorts, but should 

 more nearly approach low-grade flour. They will usually 

 contain more gluten than most of the grain by-products, 

 and because of their finely ground, heavy character, should 

 be mixed with bulkier feeds. 



The average amounts of the nutrients found in 100 jjounds 

 of wheat middlings are 10.7 pounds of water, 3.7 pounds of 

 ash, 17. S i)0unds of crude protein, 62. S pounds of earl)ohy- 

 drates, of which 4.7 poimds are crude fiber, and 5 pounds 

 are fat. The proportions of these digestible for chickens have 

 not been determined. They contain less of the water solu- 

 ble than bran 



Molasses. — Bittenbender and Lippincott' found that ■\\'hen 

 enough molasses was added to a basal ration of oat flour to 

 form 10 per cent, of the solid portion of a milk-fattening 

 ration, it increased the average gains slightly, though a 

 little less feed was consumed. It did not api)ear to increase 

 the palatability of the ration. The flavor of the fowls fattened 

 on molasses was excellent (see Sugar, p. 347). 



' Unpublished data, Iowa State College. 



