540 Feeds and Feeding. 



This trial supports the general experience that, where no water 

 has been added, buttermilk is fully equal to skim milk for pig 

 feeding. 



887. Whey. — In pig-feeding trials by Day at the Ontario Agricul- 

 tural College^ and by the author at the Wisconsin Station- whey 

 fed in combination with meal of the mixed grains gave the following 

 returns : 



481 lbs. of mixed grain when fed alone produced 100 lbs. of gain 

 303 lbs. of mixed grain with 1,398 lbs. of whey produced 100 lbs. gain 



Since 1,398 lbs. of whey saved 178 lbs. of grain, 785 lbs. of whey 

 was equal to 100 lbs. of grain. The whey used in the Wisconsin 

 trials was richer in fat than the average. Fjord of the Copenhagen 

 (Denmark) Station^' estimates that for swine feeding in Denmark, 

 where the whey is poorer than with us, 1,200 lbs. is equal to 100 lbs. 

 of mixed grain. From the above we may conclude that, when prop- 

 erly combined with corn and barley meal, 1,000 lbs. of ordinary whey 

 is worth 100 lbs. of corn meal for fattening swine. Accordingly, 

 whey is worth about half as much as skim milk for pig feeding. 



Day,* after studying the relative merits of sweet and sour whey 

 and taking into consideration the health of the animals, their gains, 

 and the quality of their flesh, states that the first slight fermenta- 

 tion which whey undergoes does not seriously detract from its value 

 for pig feeding. Day^ further found that ordinary whey was worth 

 from 25 to 30 per ct. more than separated whey. (304) 



888. Tankage, meat meal. — At the Nebraska Station*' Burnett fed 

 3 lots, each of 10 pigs, on alfalfa pasture for 56 days to test the 

 value of tankage for supplementing corn. Plumb and Van Norman 

 of the Indiana Station^ fed tankage to 3 lots of 4 pigs each for 127 

 days, and Kennedy and Robbins of the Iowa Station^ conducted a 

 similar trial with meat meal, feeding 4 lots of 12 pigs each for 100 

 days. These various trials are summarized on the next page. 



In the Nebraska trial the gains of the pigs fed tankage were 

 larger and more economical than of those fed soaked corn only. 

 Where the pigs were on alfalfa pasture, the ration containing 5 per 

 ct, of tankage produced as large gains as that containing twice that 

 amount. In the Indiana trial the ration containing 9 per ct. tank- 

 age produced larger and more economical gains than the one contain- 

 ing 13 per ct. In this trial 100 lbs. of tankage, when forming 9 



1 Ept. 1896. " Ontario Agr. Col., Ept. 1897. ' Bui. 90. 



- Rpt. 1891. ' Loc. cit., Ept. 1909. ^ Bui. 91. 



•Ept. 1887. "Bui. 94. 



