Growth and carcass quality of crossbred pigs sired by Duroc, Landrace and Large White boars

Investigation of quality variability of pig carcass was carried out on 1443 fatlings (gilts and barrows). They were progenies of 22 (Farm A) and 12 sires (Farm B), 5 breeds-crossbreds (Swedish Landrace, Large White, Duroc Hampshire, Duroc x Hampshire). Animals were fed with standardized feed mixture semi ad libitum. The quality of carcass sides was determined on the slaughter-line according to Regulation (1985). Investigation included following traits: weight of warm carcass (MTP, kg), meat in carcass sides (KMP, kg and SMP, %), total mass and ratio of leg+shoulder+loin (MFO, kg and UFO, %). Obtained results were processed using several models (Harvey, 1990) which included sire genotype, sire, sex progeny and mass of warm carcass (regression effect). All investigated traits varied under the influence of sire genotype (P<0.01) on farm B. The effect of sire genotype was significant (P<0.01) on KMP and SMP on the Farm A. All traits of carcass quality varied under the influence of sires. Gilts had higher KMP, SMP, MFO and UFO compared to male castrated heads. Difference in Total Breeding Value between best and worst boar was 10.41 (Farm A) and 11.24 index point (Farm B).

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The effect of calpastatin polymorphism and its interaction with RYR1 genotypes on carcass and meat quality of crossbred pigs

Agricultural and Food Science ◽

10.2137/145960610794197542 ◽

2008 ◽

Vol 19 (4) ◽

pp. 294 ◽

Cited By ~ 1

Author(s):

A. RYBARCZYK ◽

M. KMIEC ◽

R. SZARUGA

Keyword(s):

Meat Quality ◽

Receptor Gene ◽

Carcass Traits ◽

Carcass Quality ◽

Quality Traits ◽

The Relationship ◽

Crossbred Pigs ◽

Cast Gene

The aim of the study was to establish the relationship between a calpastatin gene (CAST) polymorphism, the ryanodine receptor gene (RYR1) polymorphism and carcass/meat quality traits in crossbred pigs. No significant differences in the analyzed pigs were found between genotypes CC and CT at the locus RYR1 and CD and DD at the locus CAST/MspI in terms of carcass and meat quality. However, a significant association of the CAST/ApaLI polymorphism with carcass quality and meat marbling were observed. The carcasses of AB pigs had significantly higher carcass percentage of lean meat, thinner backfat and thicker muscle, as well as lower meat marbling, as compared with the BB pigs. Furthermore, interactions CAST/MspI × RYR1 and CAST/ApaLI × RYR1 were found significant in relation to all the studied carcass traits. The results presented here imply that the CAST gene recognized with ApaLI may be considered as important in terms of the way it affects porcine carcass quality traits. Moreover, the research has revealed a relationship between CAST and RYR1 genotypes as regards formation of carcass traits in pigs. Follow-up studies, however, should be carried out on larger populations representing all possible CAST genotypes.;

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The effect of different fixed factors on carcass quality three breed fattening pigs

Biotechnology in Animal Husbandry ◽

10.2298/bah1204779r ◽

2012 ◽

Vol 28 (4) ◽

pp. 779-786

Author(s):

C. Radovic ◽

M. Petrovic ◽

B. Zivkovic ◽

D. Radojkovic ◽

N. Parunovic ◽

...

Keyword(s):

Carcass Quality ◽

Season Of Birth ◽

Large White ◽

New Methods ◽

Commission Regulation ◽

Fat Thickness ◽

Sire Breed ◽

Fattening Pigs ◽

Eu Commission

Objective of the paper was to investigate the effect of sire breed and sex of their progeny as well as to study methods for assessment of carcass side quality. Quality of carcass of the progeny was determined according to Rulebook (1985) and share of meat on left carcass sides determined by dissection according to methodology recommended by EU (Commission Regulation EC No 3127/94 and Commission regulation EC No 1197/06) on 84 pigs-progeny of investigated sires. Animals investigated in this study were descendants of dams of F1 genotype Swedish Landrace x Large White (the first one designated is the dam) and two boars Duroc breed (n=36 progeny) and three boars Pietrain breed (n=48 progeny). Of total number of progeny, 42 animals were male castrates and 42 animals were female. It was established that sire breed influences (P<0.01) only the fat thickness on the rump (BFTR), whereas sires of Duroc breed influenced (P<0.05 to P<0.001) pre-slaughter mass (PSM), fat thickness in the middle of the back (BFT), share of meat in carcass sides EC No 3127/94 (EC 94) and share of meat in carcass sides EC No 1197/06 (EC 06). Sires within Pietrain breed exhibited effect on (P<0.05 to P<0.001) BFTR, EC 94 and EC 06. All investigated traits were influenced by sex (gender) (P<0.05 and P<0.001) except PSM, whereas the effect of genotype (P<0.001) was present only on PSM. Season of birth influenced only EC 94 and EC 06 (P<0.001). By implementation of new methods of assessment of meatiness (EC 94 and EC 06) was determined to have a higher proportion of meat (13.33% respectively 16.46%) relation to the Rulebook (1985).

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Effect of Dietary Calcium and Phosphorus Levels on Performance of Local and Exotic Pigs

Nigerian Journal of Animal Production ◽

10.51791/njap.v3i2.2527 ◽

2021 ◽

Vol 3 (2) ◽

pp. 163-171

Author(s):

J. O. Ilori ◽

A. A. Adegbola ◽

S. A. Adeyanju ◽

T. A. Omole

Keyword(s):

Growth Rate ◽

Dietary Calcium ◽

Carcass Quality ◽

Finishing Pigs ◽

Large White ◽

Calcium And Phosphorus ◽

Local Pigs ◽

Phosphorus Levels

AN experiment involving 30 Local and 30 Large White pigs was conducted to study the effect of dietary calcium and phosphorus levels on rate and efficiency of gain, carcass and bone characteristics of growing-finishing pigs. Rate and efficiency of gain and carcass quality were not significantly different among local pigs fed varying levels of calcium and phosphorus when the same calcium; phos-phorus (Ca : P) ratio was maintained at all dietary levels. In contrast, exotic pigs receiving similar diets had a significant improvement in rate of gain. Dietary calcium and phosphorus levels affected metacarpal length, weight and also metacarpal and turbinate ash in both breeds. Growth rate and carcass quality of local pigs were however, lower than those of exotic pigs on similar diets .

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Association between leptin receptor gene polymorphism and quality of both meat and back fat in large white pigs of ukrainian breeding

Agricultural science and practice ◽

10.15407/agrisp3.02.042 ◽

2016 ◽

Vol 3 (2) ◽

pp. 42-48

Author(s):

V. Balatsky ◽

I. Bankovska ◽

A. Saienko

Keyword(s):

Gene Polymorphism ◽

Leptin Receptor ◽

Receptor Gene ◽

Intramuscular Fat ◽

Large White ◽

Pig Breeds ◽

Lepr Gene ◽

Large White Breed ◽

White Breed

Leptin receptor is one of the components of the system of regulating energy homeostasis of the organism. Leptin receptor gene (LEPR) polymorphism is associated with pig carcass index of the content of intramus- cular fat in its valuable parts, which is particularly important when assessing the quality of their carcasses for processing. Intramuscular fat is associated with meat fl avor characteristics and partly determines its tenderness, juiciness, and other parameters. Aim. To analyze LEPR gene (SNP NM001024587.1, p. 1987 C > T) polymor- phism in populations of various pig breeds and to establish its relationship with the quality of both meat and fat of pigs of Large White breed of Ukrainian breeding. Methods. Genetic-population analysis of nine pig breeds, associative analysis on the search connection of LEPR gene polymorphism with quality of both meat and fat of pigs of Large White breed of Ukrainian breeding. LEPR locus genotyping was performed by High Resolution Melting (HRM). Results. All the studied breeds are characterized by polymorphism of the leptin receptor gene (SNP NM001024587.1, p. 1987 C > T), signifi cant breed specifi city in the distribution of frequencies of alleles was established. Statistically confi rmed effect (p < 0.05) of genotypes LEPR on the content of intramuscular fat, total dry matter and moisture in the meat, as well as the moisture content in the back fat of pigs of Ukrainian Large White breed was revealed. Higher content of intramuscular fat was found in the animals with genotype TT, while a smaller amount of intramuscular fat and more moisture in fat was revealed in heterozygotes. Conclusions. Genetic marker LEPR SNP NM001024587.1, p. 1987 C > T can be used in the marker-assisted selection to predict and improve the performance quality of the meat of pigs of Large White breed of the Ukrainian breeding. These results suggest that porcine leptin receptor gene controls the quality of fat comp- lex – inside muscles and in the dorsal part of the carcass.

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