. Types and breeds of farm animals. Livestock. 730 SWINE each, 400 Berkshires pigs, and 600 Chester Whites pigs. In a study made by the writer of the Utters of 1300 Poland- China brood sows, farrowing 9335 pigs, the average size of htter was pigs, essentially the same result as secured by Dr. Bitting. In 1906 George M. Rommel published a study of Poland-China fecundity, based on herdbook records covering the years 1882- 1886 and 1898-1902. Over 50,000 litters were considered, in- cluding 103,458 pigs for 1882-1886 which averaged pigs per litter, and 299,324 pigs for 1898-190
. Types and breeds of farm animals. Livestock. 730 SWINE each, 400 Berkshires pigs, and 600 Chester Whites pigs. In a study made by the writer of the Utters of 1300 Poland- China brood sows, farrowing 9335 pigs, the average size of htter was pigs, essentially the same result as secured by Dr. Bitting. In 1906 George M. Rommel published a study of Poland-China fecundity, based on herdbook records covering the years 1882- 1886 and 1898-1902. Over 50,000 litters were considered, in- cluding 103,458 pigs for 1882-1886 which averaged pigs per litter, and 299,324 pigs for 1898-1902 which averaged pigs per litter. These figures seem to show a slight gain rather than loss in the prolificacy of this breed. In the leaflet of the Standard Poland-China Record Association previously quoted, the statement is made that this breed has " stood consider- able abuse from other breeds, on the grounds of not being ; Letters were sent to nearly one hundred breeders inquiring as to the average number of pigs farrowed per sow during three years, and from these replies the following interesting statement is made up. There was an average of pigs per litter, and one herd had this aver- age for a term of five years from 40 sows. Another breeder aver- aged 10 pigs from 25 sows for five years. Others for periods of three to four years gave averages of to 10, with some litters of 15 to 18 pigs. "There were many litters of 12, 13, 14, and 15 pigs ; Many of the sows making these records were gilts with their first litters. In a study of the prolificacy of the Poland- China, Professor H. W. Vaughan states 1 that of 2895 litters of 1 Breeders' Gazette, August i6, Fig. 341. Miss Rooseveldt 138448, reserve cham- pion Poland-China sow at the Louisiana Purchase Exposition at St. Louis, Missouri, 1904. This sow- was of the medium type and showed much refine- ment. Owned by Charles E. Keller, Newark, Ohio. From photograph by the auth
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Keywords: ., bookauthorplumbcha, bookcentury1900, bookdecade1920, bookyear1920
