Purdue University
Agricultural Experiment Station
Lafayette, Indiana
Mimeo A.H.-137 September 17, 1954
MODIFICATIONS OF THREE PURDUE DRYLOT HOG SUPPLEMENTS J. H. Conrad, T. W. Perry and W. M. Beeson
Department of Animal Husbandry
Three drylot hog supplements have been developed, tested and recommended by this station for many years (Purdue Supplements 1, 2 and 5). Of these, the most widely used drylot supplement has been Purdue Supplement 5* During the past few years certain 3-vitamins and antibiotics have been added singly and in various combinations to supplements and complete mixed rations. Fifty grams of an effective antibiotic per ton of Supplement 5 increased gains 13$ (Mimeo. AH 92)* Another experiment showed that additions of riboflavin, niacin and calcium pantothenate in addition to antibiotics and Vitamin 3]_2 would increase gains 10$ and improve feed efficiency 13$ when added to a mixed ration of ground corn and Purdue Supplement 5*
When anyone of these three supplements is mixed with corn to provide a 16$ protein ration, this ration then contains on a calculated basis 0.8 mg. (milligram) of riboflavin, 11 mg. of niacin and 3*0 mg. of pantothenic acid per pound of ration. The vitamin requirements in milligrams per pound of total ration for a 25 lb. pig, a 50 lb. pig, and a 100 lb. pig to market are as listed:
Therefore, it would appear that these supplements could be improv-3d with the addition of one or more of these B-vitamins.
The objective of this experiment was to determine the effects of adding three B-complex vitamins to different Purdue drylot hog supplements which have been fortified with antibiotics and Vitam B]_2.
Experimental Plan
Six lots of 12 Duroc pigs, each averaging 33 pounds, were placed in concrete paved lots when they were 8 weeks of age. All pigs had been Ped adequately fortified creep rations on Balbo rye pasture during the suckling period* All pigs in this experiment were fed a ration of shell— ed corn, protein supplement, minerals (40$ bonemeal, 40$ limestone and 2C;0 salt), and salt free choice from self-feeders. Details of the protein supplements fed are given in Table 1.
The experimental treatments were as follows:
Lot	1.	Supplement	1
Lot	2.	Supplement	1	/	B-Vitamins
Lot	3*	Supplement	2
Lot	4.	Supplement	2	/	B-Vitamins
Lot	5.	Supplement	5
Lot	6.	Supplement	5	/	B-Vitamins
Although the three B-vitamins in question were added in a crystal-ine form, several commercial vitamin preparations are available which c°ntain riboflavin, niacin and calcium pantothenate.