370 EXPERIMENT STATION BEOOED. [Vol.38 



Ad exiDorlment was carried out with 15 pigs in lots of 3 each, testing the ef- 

 fect of iron salts when fed with cottonseed meal as suggested by the North 

 Carolina Station. In lot 1, fed on corn meal and cottonseed meal (4:1), the 

 pigs made practically no gains. In lot 4, fed on corn meal and cottonseed meal 

 (2:1), two of the pigs died and the other, like the animals in lot 1, became 

 very much emaciated. The pigs in lot 2, fed on coi'n meal and cottonseed meal 

 (4:1) and 1 lb. of iron sulphate for every 00 lbs. of cotton.seed meal, lot 3 with 

 the same except that 1 lb. of iron chlorid was given instead of iron sulphate, 

 and lot 5 on corn meal and cottonseed meal (2:1) and 1 lb. iron chlorid made 

 good gains and were not detrimentally affected by the ration. 



Feeding esperiraents with cattle, sheep, and pigs {County Nortliumb. Ed. 

 Com. Bui. 23 {1916), pp. S-26). — Several experiments of special value to the 

 locality in which they were carried out are reported. 



In an experiment comparing the value of bran and dried brewers' grains, 

 24 cattle 18 months old were fed for 16 weeks in four lots. Lots 1 and 2 con- 

 sisted of bullocks, while lots 3 and 4 consisted of heifers. Standard rations 

 containing soy cake and Bombay cotton cake were fed lots 1 and 3, while a 

 ration of bran and sufficient soy cake to bring the digestible constituents up 

 to the standard was fed lot 2, and a ration of dried brewers' grains and soy 

 cake was fed lot 4. The bullocks receiving the cake ration made an average 

 gain per head of 15J lbs. per week, while those receiving bran made an average 

 gain of 165 lbs. per week. As bran was a higher priced feed, the cost of the 

 gains with bran was higher than with soy cake. The heifers receiving the 

 cake ration made an average gain of 11^ lbs. per week, while those receiving 

 dried brewers' grains made an average gain of 12 lbs. per week. The economic 

 results, however, were favorable to the cake ration. 



A similar exi)eriment was carried out with sheep in 3 lots of 16 each. Lot 1, 

 receiving cake alone, gained an average of 1.93 lbs. per head weekly ; lot 2, 

 receiving bran, gained 1.95 lbs. ; and lot 3, receiving dried brewers' grains, 

 1.98 lbs. 



The above experiments showed little difference in the feeding values of the 

 same amounts digestible constituents in the different feeds used. 



In an experiment to determine the feeding value of swedes and yellow tur- 

 nips, 24 calves were divided into 3 lots, lot 1 consisting of 12 calves and lots 

 2 and 3 of 6 each. Lot 1 received no roots, but was given enough hay and 

 concentrates to supply the same amount of nutrients as was received by lot 2, 

 with swedes in the ration, and lot 3 with yellow turnips. The calves fed on 

 hay and concentrates gained an average of 6.7 lbs. each per week, those on 

 swedes 6.7 lbs., and those on yellow turnips 6.5 lbs. It appears that swedes 

 and yellow turnips are of substantially equal value for the same amounts of 

 dry matter. 



" It has now been demonstrated for four winters in succession that young 

 cattle from six to twelve months old can be wintered with excellent results on 

 pasture, if they have access to a shelter shed and receive suitable additional 

 food to the pasture. At the end of the winter those wintered outside have 

 better coats of hair and will command higher prices as grazing cattle. They 

 also possess the great advantage of practical freedom from tuberculosis." 



In a trial of feeding cattle with and without salt it was found that there 

 was practically no difference in the effects. The same result was noted with 

 sheep. It Is the usual practice in the locality, which is six miles from the sea- 

 coast, not to use salt in fattening cattle or sheep, either indoors or on pasture. 



Experiments were made to determine whether it was possible to feed pigs 

 profitably on meals alone. Maize and gram, an Indian pea, were tlie meals 



