Growth of Yorkshire Suckling Pigs

Growth of Yorkshire suckling pigs.

The birthweights and daily liveweights for 87 male and 99 female pigs reared under drylot conditions were obtained over a 3-week period and used to construct a growth curve for the very young male and female pig. Analysis of variance was used to test litter and sex main effects and the litter x sex interaction effect on liveweight. The daily standard deviations of the 186 pig sample were calcul...

Preweaning growth of Yorkshire, Hampshire, and Landrace pigs.

Individual pig growth curves were derived on 445 Yorkshire, 323 Hampshire, and 316 Landrace boars and gilts. The range in age was from 1 to 35 d and these growth curves were linear. The regression parameters (x- and y-intercepts, and slopes) were different among the three breeds, and differences between boars and gilts were found in the Yorkshire breed for the y-intercept and slope and in the L...

Disease of Newborn and Suckling Pigs I

Comparative carcass and tissue nutrient composition of transgenic Yorkshire pigs expressing phytase in the saliva and conventional Yorkshire pigs.

A transgenic line of Yorkshire (YK) pigs named the Cassie (CA) line was produced with a low copy number phytase transgene inserted in the genome. The transgenic line efficiently digests P, Ca, and other major minerals of plant dietary origin. The objectives of this study were to 1) compare carcass and tissue nutrient composition and meat quality traits for third generation hemizygous CA line ma...

Antibiotics and liver extract for suckling pigs.

In experiments previously described (Braude, 1949) we observed a growth-stimulating effect in suckling pigs dosed with a liver extract, whereas we obtained no response to dosing with pure crystalline vitamin B,, (Braude & Mitchell, unpublished results). Following reports from the United States of America about the growthpromoting effect of various antibiotics (Stokstad, Jukes, Pierce, Page & Fr...