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HOG FEEDING TRIALS WINTER - 1964 - 1965

The hog feeding trials during the winter of 1964-1965 compared the following rations.

Table 40. Composition of Three Ration Fed in the Winter Hog Feeding Trials, 1964 - 1965.
Pounds Per Ton
Ration Barley Oats Rye Soy-Meal Di-Cal Limestone Trace Mineral Salt Additives*
1 (Standard) 1230 620 0 100 16 20 12 3
2 (25% Rye) 945 460 460 100 16 20 12 3
3 (50% Rye) 625 320 920 100 16 20 12 3
4 (75% Rye) 305 160 1400 100 16 20 12 3
*Additives were: 24 oz. B-vitamin blend; 16 oz. B12; 1 oz. D3; and 2 oz. vitamin A.

All rations were pelleted. Table 41 shows the gains and costs for each ration.

Table 41. Results of Feeding Rations Consisting of Different Percentages of Rye as a Replacement for Barley When Feeding Swine.
Treatment Standard 25% Rye 50% Rye 75% Rye
Heavy Light Heavy Light Heavy Light Heavy Light
No. in Lot 11 14 11 14 11 14 11 14
Av. Initial Wt. 56.2 41.6 56.0 41.5 55.6 41.6 55.6 41.5
Av. Final Wt. 199.8 207.3 182.9 202.2 177.7 217.2 170.2 188.6
Gain 143.6 165.7 126.9 161.1 122.1 175.8 114.6 147.1
Days Fed 105 134 105 134 105 134 105 134
ADG 1.37 1.24 1.21 1.20 1.16 1.31 1.09 1.10
Feed/100 Lbs. Gain 398.7 406.5 419.1 367.1 409.5 393.8 388.9 377.3
TDN/100 Lbs. Gain 287.9 293.5 307.6 269.6 302.2 290.6 301.8 292.8
Cost/100 Lbs. Gain $7.85 $8.01 $8.38 $7.34 $8.19 $7.88 $7.98 $7.58

 

Table 42. Gains and Feed Costs for Four Rations Fed in the Winter Hog Feeding Trials, 1964 - 1965.
Ration Initial Weight Final Weight Average Daily Gain Lbs. Feed Per 100 Lbs. Gain Feed Cost Per 100 Lbs. Gain
1 (Standard) 48.9 203.6 1.30 402.6 $7.93
2 (25% Rye) 48.8 192.6 1.21 393.1 $7.86
3 (50% Rye) 48.5 197.5 1.25 401.6 $8.04
4 (75% Rye) 48.6 179.4 1.18 383.1 $7.78

 

Table 43. Gains and Feed Costs For Four Rations Fed in the Winter Hog Feeding Trials for Two Years. 1964 - 1965.
Ration Initial Weight Final Weight Average Daily Gain Lbs. Feed Per 100 Lbs. Gain Feed Cost Per 100 Lbs. Gain
1 (Standard) 53.3 211.7 1.37 428.3 $8.58
2 (25% Rye) 53.4 205.0 1.37 419.1 $8.61
3 (50% Rye) 53.2 204.5 1.26 428.1 $8.96
4 (75% Rye)* 48.6 179.4 1.18 383.1 $7.78
*Results are for 1965 only.

Good, clean rye weighing about 56 pounds per bushel has a nutritive value similar to barley. However, rye lacks palatability and should probably be pelleted to avoid excessive waste.

This trial shows that the standard barley ration gave faster gains than rations containing rye. The high feed conversion of the 75% rye ration was probably due to the lighter weight of the pigs at the close of the trial.

Rations containing up to 50% rye can be used for feeding swine very satisfactorily when price conditions are right. However, rye containing high amounts of ergot should not be fed to gestating sows or gilts.


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