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2001
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tom Vol. 22, nr 2
57-72
PL
Artykuł poświęcony jest zagadnieniom transmisji danych typu "voice" w sieciach IP, a także integracji tych sieci z tradycyjnymi sieciami telefonicznymi. Opisane w nim zostały trzy najczęściej spotykane standardy: H.323 ITU-T, SIP IETF oraz MGCP IETF. Poszczególne standardy zostały scharakteryzowane pod względem architektury podstawowych komponentów działających w sieci i funkcjonalności. Przedstawione zostały też procedury zestawiania połączeń.
EN
This article describes most popular protocols used for transmission voice in IP network and transmission voice between Public Switched Telecommunication Network and IP network. It provides detalied description three most frequently used protocols H.323 ITU-T, SIP IETF, MGCP IETF.
EN
The aim of the study was to assess the usefulness of empathic test and feeding test to determine the type of arctic foxes females’ behaviour. The research material included females kept on a commercial farm situated in western part of the Wielkopolskie Voivodeship. The assessment of behaviour type of all the females from the foundation stock was conducted in 2002-2009 on the basis of behavioural reaction on empathic and feeding test. To determine the degree of balance and confidence of each animal taking part in both types of test, the basic test index Tl (1) and behavioural index Bl (2) were calculated. The feeding test appeared to be a more adequate tool for determination of behaviour type of arctic foxes when compared to empathic test, however it classified animals only to two groups (trustful and fearful).
EN
The study was conducted on 52 sows of PL, PLW breeds and their crossbreeds in a period of 1st and 2nd lactation. Colostrum and milk were collected at 10th and 21st day of lactation and its chemical composition was determined. Colostrum of crossbred sows was the richest in all the nutrients, while that of PL sows was the poorest one. Colostrum obtained from crossbred sows contained about 4% more dry matter, 0.7% protein and 2.3% fat. That tendency was maintained up to 10th day of lactation. Sows of PL breed brought the heaviest piglets, however farrow size was the lowest one.
EN
Chemical analysis and the determination of nutritive value of fat concentrate and keratin meal produced by Poultry Works "Poldrób" in Wrocław from by products such as fat , blood, feathers have been Included In the studies. Usability of the feed In rations for 60 fatteners within 30-110 kg of body weight have been examined as well. It has been found that 10 i ,15% supplement of fat concentrate resulted In the increase In daily gain and the decrease in feed consumption only during the period of fattening up to 70 kg of body weight. Keratin meal, however, may be the source of protein In the rations for fatteners over 70 kg weight.
EN
Experiments concerning the possibility of using large quantities of lucerne meal instead of barley for farrow and feeding sows throughout three breeding cycles. Gilts were divided at random into three groups of 10 and fed individually. Sows from the first group were given a fill containing 10% of lucerne meal instead of barley, the second group was fed 30% and the third group 50% of this component. There was no compensation of the dosage as regards energy and general protein. Fodder was given once daily in the morning. Up to the 90th day of pregnancy the sows received daily 2.4 kg of mixture in the first and second group and 2.5 kg in the third group. The daily ration was increased from the 91st to the 113th day of pregnancy to 3.4 kg in the first and second group and to 3.5 kg in the third group. During lactation all sows were fed at will and during barrenness - as they were during the first half of pregnancy. The piglets were weaned in the 42 day of life, observations were continued up to the 56th day. Attained results indicate that mixtures II and III containing 30 and 50% of lucerne meal included insufficient energy to be used in practice in feeding sows during the entire reproduction period.
PL
Celem badań było opracowanie modelu krzyżowania towarowego świń, który pozwoli realizować wszystkie efekty płynące z krzyżowania i uzyskiwać jednolity produkt finalny, o wysokich parametrach wartości tucznej i rzeźnej, a równocześnie będzie prosty i możliwy do stosowania w szerokiej praktyce, obniży koszty remontu stada poprzez eliminację strat związanych z adaptacją młodych loszek do nowego środowiska oraz przeniesienia chorób z zewnątrz, umożliwi prowadzenie ostrej selekcji żeńskiego materiału remontowego w warunkach produkcyjnych. Populację doświadczalną stanowiło stado loch podzielone na reprodukcyjne (R) i towarowe (T). Stado reprodukcyjne, przeznaczone do produkcji materiału remontowego żeńskiego oparte o rasy wbp i pbz krzyżowane rotacyjnie, odznaczało się wysokimi wskaźnikami użytkowości rozpłodowej. W stadzie towarowym najwyższe wyniki odchowu uzyskano przy krzyżowaniu trójrasowym z knurami linii 990 i duroc oraz czterorasowym z reproduktorami pbz - 23 x pietrain.
EN
The aim of work was to design a model of swine production crossbreeding which should allow to benefit from positive effects of crossbreeding and at the same time to get uniform final product with good fattening performance and high slaughter value. Such system should be simple and accepted for use in wide practice. Proposed model may lower costs of stock replacement in production conditions by elimination of losses connected with gilts adaptation to new environment, avoidance of transfer of illnesses from outside and more intensive selection of females. Experimental swine herd was divided into reproductive (R) and commercial section (T). Reproductive operation, aimed to supply replacement stock, consisted with WBP and PBZ breeds which were crossed reciprocally. Animals in R section were characterized with very good reproductive performance. Rearing results in commercial section (T) were the best when boars of 990 line and Duroc (3 breeds crossbreeding scheme) and PBZ-23 x Pietrain (4 breeds crossbreeding scheme) were used.
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