ANIMAL PRODUCTION. 



69 



has no equiil, while they are also used for beef anrl milk, yielding a fair 

 amount of milk rich in fat. 



Horses are scarce and the offspring of a poor grade of stock introduced from 

 the Philippines. The domesticated hogs are of 2 types: First, the long, lean, 

 slow-maturing kind, the sows being prolific and good mothers; second, the 

 short, fine-boned, early-maturing tyi)e probably from Chinese or Japanese 

 stock, the sows bearing small litters and being poor mothers. 



The native chickens are of mixed breeds. They are somewhat larger than 

 the Leghorn, but are poor egg layers. There is a ready demand for both eggs 

 and fowls in the island. Chicken pox and other serious infectious diseases are 

 prevalent. 



Pure-bred stock was imported by the station in 1911 from the United States, 

 consisting of 2 Ayrshire bulls and 2 heifers, 4 Morgan fillies and 2 stallions, 

 2 Berkshire sows and 2 boars, and a pen each of Barred Plymouth Rock and 

 Single-combed Brown Leghorn hens. The object was, first the acclimatization 

 of a pure-bred strain, and second, the improvement of native stock. One of 

 the bulls died of what was believed to be Texas fever. The remaining animals 

 were hand picked for about 4 months, when it was thought that they had under- 

 gone at least partial immuuization. Daily temperatures were kept of the cattle 

 for over 6 months, in which periods of abnormally high temperatures were ob- 

 served in each of the various animals, but the general condition has remained 

 good. The horses, hogs, and chickens are also reported in good condition. The 

 horses are being fed on native roughage. The crossing of the Berkshire on 

 native stock has resulted in an Improvement over the ordinary native pig. 

 Troubles due to climatic conditions are being experienced in the use of 

 incubators. 



Color inheritance in swine, W. W. Smith (Amer. Breeders Mag., 4 {1913), 

 No. 2, pp. 113-123, figs. 5). — Experiments in crossing Yorkshire and Berkshire, 

 and Yorkshire and Poland China swine indicated "(1) the complete dominance 

 of the Yorkshire white over the Berkshire or Poland China black in the Fi or 

 first hybrid generation; (2) a general tendency for the original parent colors 

 to be expressed separately, and in the proportion of 3 dominants to 1 recessive. 

 In the individuals of the F2 or second hybrid generation." 



Hogging" down corn. — A successful practice, J. M. Evvaed, W. J. Kennedy. 

 and H. H. Kildee (Iowa Sta. Bui. I43, pp. 309-554, figs. 5).— This bulletin 

 reports 3 years' experimental work in determining the practicability of allow- 

 ing hogs to harvest the corn crop, the value of such a system as compared with 

 the dry lot method, and to ascertain the relative importance of different sup- 

 plemental crops and concentrated feeds when hogs are fed in this way. 



Reports received from a large number of farmers to whom inquiries were 

 sent indicate that the hogging down of corn is in common practice and is being 

 found profitable. Experiments testing the value of several supplementary crops 

 when fed in conjunction with hogged-down corn gave the following results 

 with 10 spring shotes per acre : 



Returns from hogged-down com and supplemeniary crops. 



