PROCEEDINGS CORN BELT MEAT PRODUCERS' ASSN. 515 



ewe per day. The lots receiving a quarter and a half ounce made better 

 gains than the lot that got an ounce of salt. Apparently, an ounce of 

 salt per day was too much. The lambs in the lots receiving the quarter 

 and half ounce of salt per day were stronger and better covered with 

 wool and in better condition than those in the lot where no salt was fed, 

 or where one ounce was fed. Apparently, a quarter of an ounce of salt a 

 day is about right for ewes. 



The other day I picked up a farm paper and saw this heading: "From 

 the practical standpoint, pure-bred live stock are better than scrubs, and 

 the scrub sire should be eliminated." That theory is very well illustrated 

 by an experiment we have made with a wild boar which we have at the 

 station. Perhaps a number of you have been up there and seen this wild 

 boar. Pigs sired by this wild boar and out of a Poland China sow took 

 from late April to the 17th day of February to gain 150 pounds. This was 

 in dry lot_ They were fed a ration of shelled corn (self-fed) plus a mix- 

 ture (self-fed) made up of 60 per cent protein tankage, 50 parts; ground 

 alfalfa, 25 parts, and corn oil cake meal, 25 parts, plus block salt, self-fed. 



This year we took this same sow and bred her to a pure-bred Poland 

 China boar, and her pigs reached an average of 150 pounds on November 

 11, thus making a saving of three months in getting the pigs to an average 

 weight of 150 pounds. The pigs from the pure-bred sire made the same 

 gains on 82 pounds less of corn per 100 pounds of gain, which means that 

 in dollars and cents, at the present prices, you would save about 58 cents 

 per hundred pounds between the two, plus three months' labor and time. 



Speaking about soy beans, we have also done some work with soy beans 

 for fattening swine in the dry lot. A year ago last fall we started a test 

 where we carried three lots of fall pigs from an average of 50 pounds in 

 weight to an average of 225 pounds. The check lot was fed shelled corn 

 (self-fed) plus digester tankage (self-fed), plus block salt (self-fed). In 

 the second lot, we fed natural soy bean meal (self-fed) in place of the 

 tankage — that is, soy beans that had been hulled and ground; and in an- 

 other lot we fed fat-extracted soy bean meal in place of the tankage. The 

 natural soy bean meal ran about 33 per cent oil, while with the fat ex- 

 tracted it ran about 8 per cent oil. When tankage was worth $100 a ton, 

 as it was last year, the value of the natural soy bean meal to produce the 

 same margin per pig as the check lot, was worth $35 a ton; the fat-ex- 

 tracted meal was worth $48 per ton. 



As a swine feed, results were better when the oil was extracted. It is 

 cheaper to produce fat with corn than by the use of the oil in soy beans. 

 In the same test we had a lot that received vegetable hog ash, which is 

 a product put out in Omaha, I believe. It is simply manure that is taken 

 and burned in an incinerator and then reground and sold, and, according 

 to the manufacturer, contains potassium, some sulphur, a little iron phos- 

 phates, magnesia and silicon. We fed this the way the company advised 

 feeding it, namely, in a mixture of tankage 50 parts and hog ash 50 parts. 

 They advised us that a number of farmers were feeding this product and 

 getting very good results. This hog ash cost $20 per ton, and when fed to 

 make the same cost of gain as the check lot was worth minus $282 per ton. 

 (Laughter.) In other words, they would have to pay us $282 per ton to 

 feed it. (Laughter.) 



