GLAST beam test at SLAC

In May and June, a beam test for GLAST calorimeter technologies was conducted. A parasitic low intensity electron/tagged photon beam line into the End Station A at SLAC was commissioned and used. The preliminary stage of the test was devoted to measuring the performance of the parasitic beam. In the main test we studied the response of GLAST prototype CsI and scintillating fiber calorimeters to the electrons and photons. Results of this work are discussed

Influence of the new pre-starter feed on metabolism and immune status of piglets

A protein-vitamin-mineral concentrate (PVMC) containing plant protein has been developed for balancing compound feed for early weaned piglets. It uses a component from complete-fat fl axseeds, which contains polyunsaturated linolenic acid. The composition of the concentrate includes legumes, processed by special technology for the removal of anti-nutritional substances. Data on the effect of pre-starter compound feed containing the developed concentrate on the metabolism of nitrogenous substances in the body and some indicators of the neurohumoral link of the immunity of suckling pigs have been presented in the article. The animals had an intensive metabolism of nitrogenous substances. The total protein content in the blood serum was in the range of 65,53–65,73 g/l, and the ratio of albumins to globulins (coefficient A/G) was optimal – 1,55–1,67. The presence of a large amount of urea and glucose in the blood (3,05–3,72 and 6,60–5,80 mmol/l) has indicated that crossbred piglets had intensive synthetic processes associated with their growth. They contributed to the accumulation of M and G classes of immunoglobulins in the blood. The IgG content in the blood was 0,58–1,36 mg/ml, and IgM was 0,71–0,80 mg/ml. In terms of the amount of immunoglobulin G, the experimental group of piglets significantly exceeded the control group. Intestinal microbiocenosis in animals that have been received the new pre-starter compound feed was optimal. It has been dominated by positive microfloralactic acid and bifidum-bacteria, which inhibited the growth of pathogenic microflora, increasing the resistance of the piglets of the experimental group. Average daily gains in body weight were almost the same in both groups at the level of 253–254 g. Research results indicate that the new concentrate and pre-starter compound feed containing it had had the favorable effect on nitrogen metabolism and the immune status of the body of suckling piglets.</jats:p

Theoretical and practical bases of creation of prestarter granulated compound feed for piglets

Currently, the country’s industrial pig breeding uses mainly imported granulated compound feed and expensive enrichment additives containing protein products with different processing technologies, and biologically active substances. This leads to an increase in the cost of pig products. Alternative to imported analogues complex enrichment additive for prestarter feed from domestic raw materials has been developed, the use of which has been scientifically justified. The basis of this additive is soya and lupin with different processing methods, corn gluten, fish meal and milk whey, as well as biologically active substances. Optimal modes of extrusion of soya, fl ax seeds, grain feed, processing additives and granulated feed under the conditions of the feed mill have been worked out. Tests of granulated compound feeds with experimental and imported processing additives on piglets of suckling age have been carried out at the pig breeding complex. It has been established that the qualitative characteristics of the granulated compound feed with additives and processing subjects were almost equal. As the result of their use on the large number of pigs, high livability of off spring was ensured and almost equal indicators of live weight of young animals at 24-day age were obtained at the level of 253–254 g. At the same time, the level of hemoglobin in the blood was high at 119,7–120,6 g/l, and the young animals of the experimental group had the advantage in the content of γ-globulins by 1,92 %, which indicates the higher immune status of the animals of the experimental group. Studies have shown that granulated compound feed with the complex enrichment additive of domestic production is cheaper than imported by 29,76 %. This is economically beneficial for the farm.</jats:p

Biochemical processes in piglets that have been receiving a new pre-starter compound feed

The feed value of modern balancing concentrates intended for compound feed to early weaned piglets is based on a combination of energy and easily digestible protein: protein-soya concentrate, potato protein, high-quality fi sh meal and dairy feeds. A protein-vitamin-mineral concentrate containing vegetable protein intended for balancing compound feed for early weaned piglets has been described in the article. It provides for the use of a component from full-fat fl axseeds, which contains polyunsaturated linolenic acid. The composition of the concentrate included pulses and oilseeds, processed by special technology for the removal of anti-nutritional substances. Data on the infl uence of pre-starter compound feed containing the developed concentrate on the body and productivity of suckling pigs have been presented. The animals from the experimental group had more intensive metabolism. The total protein content in the blood serum was in the range of 65,53–65,73 g/l, and the ratio of albumins to globulins (coeffi cient A/G) was optimal – 1,55 and 1,67. The presence of the large amount of urea and glucose in the blood (3,05–3,72 and 6,60–5,80 mmol/l, respectively) indicated that crossbred piglets had intensive synthetic processes associated with the growth of muscle tissue and internal organs. The redox processes have been intensive, which was indicated by the high content of hemoglobin in the blood at the level of 119,7–120,6 g/l and red blood cells (4,32–4,42×1012/l). The ratio of calcium to phosphorus was optimal that indicating the balanced mineral metabolism. The average daily gains in live weight of experimental animals were almost identical at the level of 253–254 g. The results indicate that the new balancing concentrate and pre-starter compound feed containing it had the favorable eff ect on the metabolism in the body of suckling piglets.</jats:p