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1

Meat quality of fattening pigs fed yellow lupin-based diets

100%

Sonta M. , Rekiel A. , Wiecek J. , Kuczynska B. , Knizewska W.

Annals of Warsaw University of Life Sciences - SGGW. Animal Science

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2017

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tom 56[1]

EN

Meat quality of fattening pigs fed yellow lupin-based diets. The 30 crossbred pigs [(Landrace x Yorkshire) x Duroc] were fattened in 3. phase fattening period. In their nutrition as a source of protein was used soybean meal (Group C) or soybean meal and seeds of yellow lupine in the amount of 7.5% (Group E1) and 15% (Group E2). After achieving body weight of about 117.5 kg animals were slaughtered. The samples of Musculus longissimus lumborum collected from all slaughtered pigs. Significant differences were found in drip loss percentage between groups C and E1 (P ≤0.05). As regards the fatty acids, there were lower proportions of C18:2 in group E1 vs C (P ≤0.05) and of C18:2 and C20:4 in group E2 vs C (P ≤0.01). Differences in PUFA percentage, PUFA/SFA ratio, and proportion of n-6 fatty acids were significant, with lower values of the traits in group E1 vs C (P ≤0.05) and in group E2 vs C (P ≤0.01), which shows that the dietetic value of pork has slightly deteriorated. The chemical composition and the physical parameters of the meat samples were normal and at a similar level in all the groups.

PL

Jakość mięsa tuczników żywionych mieszankami z udziałem łubinu żółtego. Przeprowadzono 3. fazowy tucz 30 świń mieszańców [(Landrace x Yorkshire) x Duroc]. W ich żywieniu stosowano jako źródło białka poekstrakcyjną śrutę sojową (grupa C), lub poekstrakcyjną śrutę sojową i nasiona łubinu żółtego w ilości 7,5% (grupa E1) i 15% (grupa E2). Po osiągnięciu masy ciała ok. 117,5 kg zwierzęta ubito. Od wszystkich tuczników pobrano po uboju próby Musculus longissimus lumborum. Różnice istotne odnotowano w procencie wycieku swobodnego między grupami C i E1 (P ≤0.05). W profilu kwasów tłuszczowych stwierdzono: mniejszy udział kwasu C18:2 w grupie E1 vs C (P ≤0.05) oraz C18:2 i C20:4 w grupie E2 vs C (P ≤0.01). Różnice w udziale PUFA, stosunku PUFA/SFA i udziale kwasów z grupy n-6 potwierdzono statystycznie; wartości cech były mniejsze w grupie E1 vs C (P ≤0.05) oraz E2 vs C (P ≤0.01), co świadczy o nieznacznym pogorszeniu wartości dietetycznej wieprzowiny. Skład chemiczny oraz parametry fizyczne prób mięsa były prawidłowe i na podobnym poziomie we wszystkich grupach.

2

Application of the suckling mouse bioassay to assess the enterotoxic properties of Yersinia enterocolitica strains isolated from fattening pigs

100%

Bancerz-Kisiel A. , Szczerba-Turek A. , Szweda W.

Bulletin of the Veterinary Institute in Puławy

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2011

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tom 55

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nr 1

EN

Enterotoxic capacities of 95 Yersinia enterocolitica strains isolated from fattening pigs by the use of the suckling mouse bioassay were investigated. A positive result was received for 14 strains (14.74%), doubtful for 33 strains (34.74%), while the rest of 48 strains (50.52%) did not induce the production of enterotoxins. The received results show that in the pig population there are almost 15% of Yersinia enterocolitica strains, which are directly dangerous to public health because of their enterotoxic capacity. It is also worth paying attention to those strains, which in the suckling mouse bioassay provided doubtful results (around 35%) because their ability to produce enterotoxins was not explicitly declared as impossible.

3

The effects on growth rate during two fattening periods on carcass quality of fattening pigs fed ad libitum

100%

Koczanowski J. , Migdal W. , Klocek C. , Tuz R.

Annals of Animal Science. Supplement

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2001

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nr 1

4

Possibilities of reducing the nitrogen excretion by fattening pigs

100%

Sobotka W. , Tywonczuk J.

Natural Sciences

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2000

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tom 04

5

Isolation, biotyping, and serotyping of Yersinia enterocolitica strains from fattening pigs

84%

Bancerz-Kisiel A. , Szczerba-Turek A. , Platt-Samoraj A. , Szweda W.

Bulletin of the Veterinary Institute in Puławy

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2011

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tom 55

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nr 1

EN

The study has been taken up to collect more data on Yersinia enterocolitica isolated from pigs as the main reservoir and source of infection with strains pathogenic for humans. Bacteriological examinations, bio- and serotyping were conducted on 616 rectal swabs, taken from 308 fattening pigs. Two samples were taken from each animal to determine the ability of Y. enterocolitica to grow under different temperature conditions (warm and cold culture). It has been proven that low temperature constitutes a suitable culture condition. 138 Yersinia enterocolitica strains were isolated (22.40%), most of which (65.22%) were obtained in cold culture and 99.28% included in biotype 3 (one strain belonged to biotype 2). Serotyping yielded a positive result in 107 strains with the diagnostic serum for antigen O:3, in 18 - with the serum for antigen O:9, and 13 strains were determined to be non-typable. The results indicated that asymptomatic infections with Y. enterocolitica strains of the biotypes and serotypes pathogenic for humans are common in pig population.

6

Zinc, selenium and chromium absorption from yeast Saccharomyces cerevisiae by fattening pigs

84%

Korniewicz A. , Dobrzanski Z. , Kolacz R. , Korniewicz D.

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2003

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nr 2

7

Fattening performance and carcass meatiness in PI x [PLW x PL] pigs fed mixtures with different protein levels

84%

Frankiewicz A. , Urbaniak M. , Lyczynski A. , Przybecka I. , Skrzypczak I.

Roczniki Naukowe Zootechniki

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2000

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tom 27

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nr 4

8

Influence of the changed fatty acid composition in feed on fatty acid profile in backfat of fatteners slaughtered at different body weights - short report

84%

Koczanowski J. , Borowiec F. , Migdal W. , Klocek C.

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2002

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tom 11/52

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nr 4

EN

The study was conducted on 32 crossbred fatteners (Polish Landrace x Polish Large White) x Pietrain fed a feed containing 0 or 6% soybean oil after they reached 70 kg of body weight. The fatteners were slaughtered at 0, 12, 24 and 36 days after commencement of feed administration. Feed supplementation with soybean oil did not cause any significant differences in daily gains or feed conversion per 1 kg of live weight. After 24 days of feeding of the animals with feed containing soybean oil, highly statistically significant (P< 0.01) increase (3.0%) in the content of polyunsaturated fatty acids (PUFA) in backfat was noted, while after 36 days of the feeding, contribution of saturated fatty acids (SFA) to total content of fatty acids was significantly lower (6.0%) (P< 0.05) than the respective value at the beginning of the feeding. On the other hand, no significant changes were found in backfat fatty acid profile with respect to monounsaturated fatty acids (MUFA).

PL

Badania przeprowadzono na 32 tucznikach mieszańcach (pbz x wbp) x Pietrain. Tuczniki żywiono od 70 kg masy ciała mieszankami pełnoporcjowymi: grupa kontrolna bez udziału oleju sojowego, natomiast grupa doświadczalna z 6% udziałem oleju sojowego. Profil kwasów tłuszczowych w słoninie oceniano ubijając tuczniki po 0, 12, 24 i 36 dniach podawania paszy. Dodatek do paszy oleju sojowego nie spowodował statystycznie istotnych zmian w przyrostach dziennych tuczników, ani w zużyciu paszy na 1 kg przyrostu. Po 24 dniach podawania paszy z dodatkiem oleju sojowego stwierdzono statystycznie wysoko istotny (P<0,01) wzrost 3,0% wielonienasyconych kwasów tłuszczowych (PUFA), a po 36 dniach wzrost o 7,36%. Po 36 dniach żywienia udział nasyconych kwasów tłuszczowych (SFA) w ogólnej sumie kwasów tłuszczowych był istotnie niższy (o 6,0%) (P<0,01) niż na początku tuczu. Nie stwierdzono natomiast istotnych zmian w profilu kwasów tłuszczowych słoniny odnośnie jednonienasyconych kwasów tłuszczowych (MUFA).

9

The use of telemetric measurement of biophysical parameters for evaluating the response of growing pigs to different management systems

84%

Walczak J. , Herbut E.

Roczniki Naukowe Zootechniki

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2000

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tom 27

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nr 2

10

Usefulness of modified fish meal [MFM} in feeding of fattening pigs

84%

Korniewicz A. , Dobrzanski Z. , Kolacz R. , Korniewicz D. , Usydus Z.

Annals of Animal Science

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2002

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tom 02

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nr 2

11

The cholesterol level in muscles of crossbred fatteners slaughtered at different body weights

84%

Migdal W. , Borowiec F. , Koczanowski J. , Klocek C. , Mlynek J. , Nowicki J. , Gardzinska A.

Annals of Animal Science. Supplement

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2001

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nr 1

12

Endosperm of milk thistle [Silybum marianum L.] in fattening pig nutrition

84%

Frankiewicz A. , Potkanski A. , Urbaniak M. , Mroczyk W. , Kasprowicz M.

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tom 03

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nr 1

13

Results of pig fattening [30-100 kg] based on standard or free-choice diets

84%

Falkowski J. , Kozera W. , Bialkowski J.

Advances in Agricultural Sciences

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2000

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tom 07

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nr 1

14

Effect of energy concentration on the efficiency of betaine and chromium picolinate as dietary supplements for fattening pigs

84%

Urbanczyk J. , Hanczakowska E. , Swiatkiewicz M.

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nr 3

15

Application of multiplex PCR for the evaluation of the occurrence of ystA, ystB, ystC, and ymoA genes in Yersinia enterocolitica strains isolated from fattening pigs

67%

Bancerz-Kisiel A. , Szczerba-Turek A. , Platt-samoraj A. , Szweda W.

Bulletin of the Veterinary Institute in Puławy

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2011

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tom 55

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nr 1

EN

The purpose of the study was to evaluate the occurrence of genes directly connected with pathogenicity in Yersinia enterocolitica strains isolated from fattening pigs. Multiplex PCR, used for ystA, ystB, ystC, and ymoA gene detection, was optimised in order to determine the existence of the genes in one reaction. Material for the study consisted of 138 strains of Y. enterocolitica, which were preliminary examined by the bacteriological, sero- and biotyping methods, then bacterial DNA was isolated and multiplex PCR was performed. The presence of the products of length corresponding to the ystA and ymoA gene fragments was found in each of the examined strains. The ystB and ystC genes were not detected in any of the tested samples. The molecularly confirmed existence of Y. enterocolitica in fattening pigs indicates the carrier state and a possibility of shedding the microorganism into the environment, and shows that pigs are an important reservoir of the bacteria and a potential source of infection for humans.

16

Evaluation of the quality of meat from fattening pigs classified according to the EUROP system at two meat plants in North-Eastern Poland

67%

Bak T. , Denaburski J.

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2002

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tom 11/52

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nr 2

EN

The studies were conducted on 250 carcasses of fattening pigs of both sexes, coming from individual producers, purchased by the Meat Plants in Ostróda and Brodnica. The criterion of classifying them according to the EUROP system was the meat content of carcasses. An increase in quality from class P to E was accompanied by a lower content of dry matter and fat, and a higher content of mineral components. Meat from fattening pigs purchased by the Meat Plant in Ostróda was characterized by significantly better physicochemical properties (darker colour, higher water-holding capacity, higher pH24 values), compared with meat from fattening pigs purchased by the Meat Plant in Brodnica. Also the parameters of taste quality (aroma, tenderness, taste) were better in the case of meat from fattening pigs slaughtered in Ostróda.

PL

Do badań wybrano 250 tusz tuczników obu płci pochodzących od producentów indywidualnych z zaplecza surowcowego Zakładów Mięsnych w Ostródzie i Brodnicy. Kryterium wyboru tusz tuczników do poszczególnych klas EUROP była zawartość mięsa w tuszy. Wzrostowi klasy tuszy od P do E w systemie EUROP towarzyszyło obniżenie zawartości suchej masy i tłuszczu surowego w mięsie, a zwiększenie zawartości składników mineralnych. Mięso tuczników skupowanych przez zakłady mięsne w Ostródzie charakteryzowało się istotnie lepszymi właściwościami fizykochemicznymi (barwa, wodochłonność, pH24) niż tuczników skupowanych przez zakłady w Brodnicy. Także wyróżniki jakości sensorycznej (zapach, kruchość, smakowitość) były korzystniejsze dla mięsa tuczników poddanych ubojowi w Ostródzie.

17

Effect of various protein feeds on carcass traits, meat quality and fatty acid composition of backfat of gilts and barrows

67%

Urbanczyk J. , Swiatkiewicz M. , Hanczakowska E. , Sieminska M.

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2002

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nr 2

18

Fatty acid content of pork depending on swine genotype

67%

Grzeskowiak E. , Borzuta K. , Obiedzinski M.

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nr 1

19

Efficiency of enzyme utilization in diets containing faba bean seeds fed to fattening pigs

67%

Florek S. , Stanek M. , Purwin C.

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2002

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nr 2

20

Fattening performance and meat value of pigs fed calcium salts of linseed oil fatty acids in their diets

67%

Barowicz T. , Pietras M.

Roczniki Naukowe Zootechniki

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1999

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tom 26

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nr 4