660 



EXPERIMENT STATION RECORD. 



to the author the theory that the iiierease iii the richness of milk with 

 advancing lactation may follow as a result of being with calf rather 

 than of the shrinkage in yield. 



Fattening lambs, 0. D. Smith and F. B, Muiviford {Michif/an Sta. 

 Bui. IJo, pp. '2/ ). — This experiment was made to compare different grain 

 foods for land)s during winter. It included 125 grade Shropshire lambs, 

 divided into 9 lots, which were fed in the barn fiom November 27 to 

 March 12. The food was given to all ad libitum. It consisted of clover 

 hay with different grain feeds, with or without roots. The rations, aside 

 from the clover hay, are given in the following table, togetl»er with the 

 amounts of protein and carbohydrates which the animals in each lot 

 consumed per 1,000 lbs. live weight daily: 



Character and composition of rations of lambs. 



Lot, 



Ration. 



Wliole coru 



Whole corn and roots 



4 parts corn to 1 part linseed meal, and roots 



4 i)art.s corn to 1 part linseed meal 



Whole coru and \\heal bran, equal parts 



Whole corn and whole wheat ' 



5 jiarts whole wheat to 1 part linseed meal 



Wliole corn (" self feed ") 



Whole corn and wheat bran, equal parts (''self feed") 



Nutrients fed daily 



per l.OUO lbs. live 



weight, 



X) .„;„ Carbohy- 



Protein. ^^^^^^ 



Pounds. 

 2.0 

 2.1 



2.7 

 2.8 

 2.5 

 2.1 

 2.7 

 2.0 



Pound f!. 

 16.0 

 16.7 

 16.] 

 15.7 

 14.8 

 15.5 

 15.0 

 15.7 

 16.1 



Nutritive 



ratio of 



food. 



1:8.0 

 1:8.0 

 1:6.0 

 1:5.6 

 1:6.0 

 1:7.5 

 1 : 5. 5 

 1:7.9 

 1:6.2 



1 Proportion not stated. 



The linseed meal used was new process. The roots consisted of a 

 mixture of equal parts of rutabagas and sugar beets. A detailed record 

 is given for each lot of the food eaten, gains, cost of food, eaten, and the 

 financial result. In the latter the lambs are reckoned at 3 cts. per 

 pound at the beginning and at 3.9 cts. i^er pound at the close of the 

 experiment, and no allowance is made for the value of manure or the cost 

 of attendance. The relations of temperature to gain, of carbohydrates 

 and protein to gain, and of temperature to the amount of dry matter 

 required to produce a jiound of gain are discussed and illustrated 

 graphically. 



A summary of the results is as follows: 



Lot, 



Eation. 



Cost of A. .„_„„„ 

 fond iier '^^^rage 

 loott per pj.ofitper 

 pound ot ' ].,.„i; 

 gain. , 



Corn 



Corn and roots 



Corn, linseed meal, and roots 



Corn and linseed meal 



Coru and bran 



Wheat and corn 



Wlieat and linseed meal 



Coru ('self-feed") 



Corn and bran (" self-feed"). 



Cents. 

 4.6 

 4.6 

 5.3 

 5.1 

 5.3 

 5.4 

 6.3 

 5.7 



Cents. 

 51.0 

 45.6 

 20.0 

 31.0 

 17.0 

 31.0 



1.0 

 30.0 



2.0 



