Effects of qualitative and quantitative feed restriction on carcass yield and pork quality

• Autorzy: Njoku C. , Adeyemi O. , Sanwo K. , Sanya B. , Popoola A. , Aina A.

Warianty tytułu

PL

Wpływ ograniczonego ilościowo i jakościowo żywienia na wydajność tusz i jakość mięsa wieprzowego

• Języki publikacji: EN

Abstrakty

EN

A 3 x 3 factorial experiment was carried out to investigate the carcass yield and meat quali-ty characteristics of growing pigs subjected to qualitative and quantitative feeding strategies. Eighty one (81) Large White growing pigs (54 males and 27 females) with initial weight of 6.7 ± 0.39 kg were assigned to nine treatments of three replicates of three pigs per replicate. Treatments consist of three levels of qualitative (20, 18 and 16% crude protein) and quantitative (ad libitum, 90% and 80% ad libitum) feed restriction. Fasted weight values (31.75, 26.77, 23.98 kg) of growing pigs significantly (p < 0.05) decreased with decreasing levels of dietary crude protein. The same trends were observed in other carcass yield parameters of growing pigs studied except left carcass weight which was not significantly affected by qualitative restriction. Dietary crude protein levels had significant (p < 0.05) effect on percentage cooking loss with the values obtained increasing with decreasing levels of dietary crude protein content. Quantitative feed restriction influenced (p < 0.05) head, shoulder, fore-leg, hind-leg, liver, kidney, spleen and stomach weights but had no influence on meat quality parameters of growing pigs. Interaction between qualitative and quantitative restriction had significant effect on all carcass yield parameters but with no ef-fect on meat quality indices considered in this study. It can be concluded from this study that qualitative and quantitative restriction can be used as management tool to alter the carcass yield, cut-parts and visceral organs of growing pigs; the cooking loss of pork likewise was impac-ted positively by the quality of ration offered

PL

Doświadczenie w układzie 3 x 3 przeprowadzono w celu określenia wydajności rzeźnej i ja-kości mięsa rosnących świń żywionych restrykcyjnie pod względem ilościowym i jakościowym. 81 świń rasy wielkiej białej (54 wieprzki i 27 loszek) o początkowej masie ciała 6,7 ± 0,39 kg po-dzielono na 9 grup doświadczalnych, w trzech powtórzeniach po 3 osobniki w każdym. Czynnikami doświadczalnymi były trzy różne poziomy żywienia jakościowego (20, 18 lub 16% białka ogólnego w paszy) i ilościowego (żywienie ad libitum, 90% lub 80% poziomu ad libitum). Końcowa masa ciała świń w grupach żywionych z ograniczeniami jakościowymi statystycznie istotnie (p < 0,05) zmniejszała się wraz z malejącym poziomem białka ogólnego w mieszankach. Takie same zależno-ści obserwowano w odniesieniu do cech jakości tusz, z wyjątkiem masy lewej półtuszy, która nie była zróżnicowana statystycznie istotnie. Zawartość białka ogólnego w stosowanych mieszankach miała statystycznie istotny (p < 0,05) wpływ na straty w procesie gotowania, które rosły wraz z ob-niżaniem się zawartości białka. Żywienie restrykcyjne w zakresie ilości podawanej paszy spowodo-wało statystycznie istotne (p < 0,05) zróżnicowanie masy poszczególnych wyrębów tuszy i narządów wewnętrznych: głowy, łopatki, nogi przedniej, nogi tylnej, wątroby, nerek, śledziony i żołądka. Jed-nocześnie zróżnicowanie ilościowe żywienia nie miało wpływu na cechy jakości pozyskanego mięsa. Stwierdzono statystycznie istotne interakcje między żywieniem restrykcyjnym ilościowymi jakościowym w zakresie wszystkich badanych cech wydajności tuszy, jednocześnie nie stwier-dzono ich w zakresie badanych cech jakości mięsa. Można stwierdzić, że zastosowanie żywieniowych ograniczeń jakościowych i ilościowych może być metodą kształtowania wydajności rzeźnej, masy wyrębów tuszy i narządów wewnętrz-nych rosnących świń. Podobnie jakość podawanej paszy może wpływać na mniejsze straty pod-czas obróbki cieplnej wieprzowiny

• Wydawca: -
• Czasopismo: Polish Journal of Natural Sciences
• Rocznik: 2018
• Tom: 33
• Numer: 1
• Opis fizyczny: p.29-48,ref.

Twórcy

autor

Njoku C.

• Department of Animal Production and Health, University of Agriculture in Abeokuta, Alabata Road, Abeokuta, Ogun State, Nigeria

autor

Adeyemi O.

• Department of Animal Production and Health, University of Agriculture in Abeokuta, Abeokuta, Nigeria

autor

Sanwo K.

• Department of Animal Production and Health, University of Agriculture in Abeokuta, Abeokuta, Nigeria

autor

Sanya B.

• Department of Animal Production and Health, University of Agriculture in Abeokuta, Abeokuta, Nigeria

autor

Popoola A.

• Department of Animal Production and Health, University of Agriculture in Abeokuta, Abeokuta, Nigeria

autor

Aina A.

• Department of Animal Production and Health, University of Agriculture in Abeokuta, Abeokuta, Nigeria

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