PHOSPHATASE ACTIVITY IN 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...

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with a liver extract, whereas we obtained no response to dosing with pure crystalline vitamin B,, (Braude & Mitchell, unpublished results).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...

Disease of Newborn and Suckling Pigs I

Postnatal changes of plasma amino acids in suckling pigs.

Amino acids, ammonia, urea, orotate, and nitrate plus nitrite (stable oxidation products of nitric oxide) were determined in plasma of 1- to 21-d-old suckling pigs. Jugular venous blood samples were obtained from pigs at 1, 3, 7, 14, and 21 d of age for analysis of plasma amino acids and metabolites by HPLC and enzymatic methods. Plasma concentrations of arginine and its immediate precursors (c...

Begging for milk: evolution of teat massaging in suckling pigs.

We present a model that simulates the evolution of teat massaging (begging) by suckling piglets (Sus scrofa) and milk distribution among teats (provisioning) by their mothers. Contrary to previous begging models, this one incorporates an ontogenetic dimension in that the inherited begging and provisioning rules are repeatedly allowed to interact, and their consequences for milk intake, growth a...