Dynamic tests during cow milking with different types of milk meters.

This study is related to the POM - Measure 2 - Project B15 'Veterinary services computerization and technical support to livestock farms', in which innovative plants solutions has been introduced to recognize the single animal to measure the quantity of produced milk, to centralize and automate the management, in different cow and sheep and goats breedings in Puglia and Basilicata regions. The experimentation has foreseen dynamic tests, during the real milking of the cows, in an apulian plant in which different measurers of the quantity of milk have been installed: weigh jar, electronic weighing 'bascule' milk-meter, electronic proportional milk-meter. In a mechanical point of view, the vacuum level and the vacuum fluctuations in three different milk pipe sections have been valued: at short milk tube, downstream from the claw, prior to the milk meter.

A simple system for nutritional studies with chronic consumption of liquid diet in rats.

A feeding system allowing liquid diet distribution to rats without any loss by evaporation is described. A liquid diet stirred continuously is offered to rats in water bottles. The diet is made available to the animals without any clotting throughout the 24-h period.

Some studies on the metabolism and the effects of 99Mo- and 35S-labelled thiomolybdates after intravenous infusion in sheep.

Sheep were infused intravenously with 99Mo- and 35S-labelled tri- and tetrathiomolybdates (1-2 mg Mo). Most of the plasma radioactivity was trichloroacetic acid (TCA)-insoluble after infusion, but the stability of this fraction was reduced by pre-infusion or subsequent infusion with unlabelled thiomolybdates. Most of the 99Mo and 35S was shown to be associated with albumin.

Conversion of amorphous tricalcium phosphate into apatitic tricalcium phosphate.

Precipitated calcium orthophosphate, rapidly prepared in highly supersaturated solutions at pH 9-11, is an amorphous tricalcium orthophosphate (atomic ratio Ca/P = 3/2) of formula Ca9(PO4)6, nH2O. Kept wet at room temperature, this phosphate is hydrolyzed according to the reaction PO4(3-) + H2O leads to HPO4(2-) + OH-; a tricalcium orthophosphate series is then formed, its general formula is Ca9 (HPO4)x (PO4)6-x (OH)x, O less than or equal to x less than or equal to 1. Moreover, the amorphous phosphate is converted into apatitic phosphate at half hydrolysis (x approximately equal to 0.

[Systematic study of the variations in mineral composition of different bones from various animals according to their localization].

X-ray diffraction techniques allow us to show that, in calcified tissues, phosphates resulting from a given formation process have the same ratio Ca/P for the bones at different subjects, providing these subjects are of the same kind and the same age. This ratio Ca/P depends on the bone formation process.