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Effect of pre-slaughter body weight of fatteners on their slaughter value

100%

Wiecek J., Rekiel A., Warda A., Sonta M., Janus M., Knizewska W.

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

2015

tom 54[2]

Effect of pre-slaughter body weight of fatteners on their slaughter value. Fattening of 79 three-breed pigs (Polish Landrace x White Polish Large) x Duroc was carried out. The animals were kept and fed in the standardized way. The research material was assigned to two experimental groups; the criterion for classification was body weight before slaughter (group A ≤ 100 kg, group B > 100 kg) (difference 15 kg; P ≤ 0.001). After slaughter, the loin “eye” height, backfat thickness and carcass meatiness were instrumentally determined by the EUROP system. Also, the tests concerning the quantity of LL muscle were performed, by determination of colour (L*a*b*), water holding capacity (WHC) and free drip. Chemical content of LL muscle samples were determined, including: dry matter, total protein, intramuscular fat, crude ash as well as participation of fatty acid groups: SFA, MUFA, PUFA n6, PUFA n3. The ratio of acids n6/n3, MUFA/UFA, MUFA/SFA and PUFA/SFA was determined. The pre-slaughter body weight affected the few slaughter and meat qualities. The carcasses obtained from lighter pigs were a by lower fattening, with the preservation of good meatiness. The content of intramuscular fat was higher in the samples of meat from the fatteners of group A as compared to the experimental group B (P ≤ 0.05). Any significant effect of body weight on the remaining chemical traits and the participation of fatty acid groups in the examined samples of LL muscle were not found.

Effect of dietary protein and amino acids level on nitrogen excretion, fattening and slaughter traits of pigs

67%

Wiecek J., Skomial J.

Roczniki Naukowe Zootechniki

2000

tom 27

nr 4

Ograniczanie wyników

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

1 Roczniki Naukowe Zootechniki

2 Wiecek J.

1 Janus M.

1 Knizewska W.

1 Rekiel A.

1 Skomial J.

1 Sonta M.

1 Warda A.

1 2015

1 2000

Wyniki wyszukiwania

Effect of pre-slaughter body weight of fatteners on their slaughter value

Effect of dietary protein and amino acids level on nitrogen excretion, fattening and slaughter traits of pigs