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The amount of feed required to produce 1 pound of increase in live weight for each week is given in Table No. 6. "No gain" is entered in the columns where losses in weight occurred.

TABLE No. 6.

Feed required to produce One Pound of Increase for each Week.

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3.62 No gain.

4.77

1.82

1.82

1.25

1.82

2.90

1.41

1.52

1.64

3.36

No gain.

4.11

8.86

16.80

5.43

9.05

4.26

3.88

6.45

20.37

5.21

6.42

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10th

11th

12th

13th

14th

15th

16th 14.00

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No gain.

1.85

6.04

8.46

3.72

4.37

5.40

4.96

5.94

8.76

12.22

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As in the preceding experiments, the Tables show fluctuations in weight from week to week that cannot always be accounted for by a derangement of the health of the animals.

The results of the experiment are better shown in Table No. 7, in which the total increase, the amount of meal consumed, the meal consumed for each 100 pounds of live weight, the meal required to produce 1 pound of increase of live weight, the average gain per cent per week, and the average weight are given in periods of four weeks each for the pigs of each age and description.

The last division of the Table gives the results of the experiment with pigs Nos. 10, 14, and 16, when fed in 1870, for convenience of comparison with the results obtained with the same animals when fed in 1871.

The pure-bred pigs, when put up for feeding, were in higher condition than the natives, and they could not, therefore, be expected to give as large a return for feed consumed, as the experiments thus far all show that other things being equal, the fatter the animal is the less return obtained for a given amount of food consumed.

Total increase in
pounds.

TABLE No. 7.

Showing the Average Results in Periods of Four Weeks each, in Groups arranged with reference

to Age and Breed.

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shire; 8 months.

3d

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22.50

154.00 18.27

6.84

2.81

210.75

4th

229.00

121.00

13.28

8.64

1.58

Average .. 117.00 577.25

20.33

4.84

4.71

177.5016...

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NUMBER OF PEN.

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The Suffolk pig in pen No. 1 did not do well after the third period, and it was finally turned out from the pen, and further experiment with it was abandoned. The remaining pigs were weighed fasting on the morning of Dec. 12, and slaughtered.

The carcasses were weighed the next morning, with the following results

:

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Average gain per cent

per week.

Average weight of pigs for each pe

The variation in the return for feed consumed from week to week, without apparent cause, is quite as marked in the experiments of this year as in former experiments.

The following tabular statements will best illustrate this lack of correspondence between the feed consumed and the return obtained for it:

Feed consumed.
Increase....

PEN NO. 1.

PEN NO. 3.

2d 8d 4th 5th 6th 7th Sth Weck Week Week Week Weck Week Week

28.25 25.75 24.25 27.50 27.00 25.75 22.50
9.0 8.5 4.5 8.5 6.0 0.0 1.0

Feed consumed...
Increase.

4th 5th 6th 7th 8th 9th 10th 11th 12th Week Week Week Week Week Week Week Week Week

38.5 42.5 45.75 49.5 49.25 55.75 46.5 52.25 49.25 10.0 11.0 12.0 7.0 11.5 15.5 11.0 13.5 7.5

PEN NO. 7.

4th 5th 6th 7th 8th 9th 10th 1th 12th 18th 14th 15th Weck Week Week Weck Week Week Week Week Weck Week Week Week

Feed consumed..... 56.0 560 610 63.0 60.75 63.75 60.75 63.5 65.25 67.5 67.5 67.5
Increase...
13.5 10.5 4.5 14.0 14.0 15.5 12.5 12.5 18.0 9.5 6.5 10.5

Feed consumed.
Increase

PEN NO. 8.

8th 9th 10th 11th 12th 18th 14th 15th 16 Week Week Week Week Week Weck Week Week Week

55.5 63.0 63.0 63.0 65.5 64.5 63.0 63.0 62.0
15.5 21.5 12.5 14.0 15.5 3.0 7.0 16.5 12.5

Feed consumed.
Increase

PEN NO. 5.

PEN NO. 12.

9th 10th 11th 12th 13th Week Week Week Week Week

39 75 38.5 39.75 36.0 33.25
3.0 11.0 10.0 -1.5 0.0

Feed consumed.....
Increase.....

6th 7th Eth 9th 10th 11th 12th 18th 14th Weck Weck Week Week Week Week Week Week Week

57.75 63.0 61.0 64.0 640 64.25 67.5 68.75 66.5 13.5 14.0 18.0 19.0 15.0 125 20.0 13.0 9.5

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