Abstract Research is needed on how technology can facilitate cow?calf contact (CCC). This research communication describes the behaviour of dairy pairs in two cow-driven CCC-systems differing cows' access to calves through computer-controlled gates (smart gates, SG). Specifically, cow traffic SG when visiting their calves, allogrooming, suckling and cross-suckling, eating resting finally vocal ...

20 one-month-old sanjabi suckling lambs (ten males and ten females with initial liveweight of 13.4 ± 1.3 and 11.6 ± 0.9, respectively) were used to assess the effect of ad libitum creep mixture on dry mater intake, live weight gain and carcass characteristics. the lambs were blocked within sex according to their live weight and randomly allocated to one of two treatments, control (free suckling...

The objective of this study was to ascertain whether maternal additive genetic variance exists for within-litter variation in birth weight and for change in within-litter variation in piglet weight during suckling. A further objective was to estimate maternal genetic correlations of these two traits with mortality, birth weight, growth, and number of piglets born alive. Data were obtained from ...

A 10% suckling rat brain rabies vaccine free from encephalitogenic activity was prepared and inactivated with 1:8,000 beta-propiolactone (BPL), or ultraviolet light, or a combination of ultraviolet light and BPL, or 1% phenol. Potency was excellent in all samples, with the exception of the phenolized product which was marginal. A purified suckling rat brain (SRB) vaccine prepared by zonal centr...

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with a liver extract, whereas we obtained no response to dosing with pure crystalline vitamin B,, (Braude & Mitchell, unpublished results).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