National Pork Producers Council Maternal Line Genetic Evaluation: A comparison of growth and carcass traits in terminal progeny1

Cassady, J. P.; Robison, O. W.; Johnson, R. K.; Mabry, John W.; Christian, L. L.; Tokach, Mike D; Miller, R. K.; Goodwin, R. N.

doi:10.2527/2004.82123482x

Cited by 14 publications

(17 citation statements)

References 11 publications

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“…The 100% ZS and 50% ZS genetic groups of barrows were characterised by a lower lean meat content in the carcass than the analogous groups of gilts (100% ZS 39.02 vs. 44.64%, 50% ZS 43.52 vs. 47.59%). This result is consistent with the earlier studies by other authors (Cassady et al, 2004;Bahelka et al, 2007). In their study Bahelka et al (2007) recorded lean meat content in barrows to be 52.77%, while for gilts it was 57.69%.…”

Section: Resultssupporting

confidence: 93%

Evaluation of fattening and slaughter performance and determination of meat quality in Złotnicka Spotted pigs and their crosses with the Duroc breed

Szulc¹,

Skrzypczak²,

Buczyński³

et al. 2012

Czech J. Anim. Sci.

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The study aimed at an evaluation of fattening and slaughter performance as well as meat quality of the native Złotnicka Spotted (ZS) pigs and its crosses with Duroc pigs. The experimental material comprised 60 fatteners, divided into three genetic groups of 20 animals (100% ZS, 75% ZS and 50% ZS). The specific character of conservative breeding results in low values of fattening and slaughter performance traits observed in ZS breed. Among the analysed groups, animals with 100% share of ZS genes in their genotype were characterised by low daily weight gains (0.59 kg), considerable backfat thickness (34.96 mm), slight muscle thickness (48.05 mm), and low leanness (41.83%). These parameters were higher in both groups of crosses. Differences between the 100% ZS group and the 50% ZS group were significant for backfat thickness and highly significant for leanness. Acidity and colour parameters analysis showed that meat from all the genetic groups analysed was characterised by a good quality. The highest pH<sub>45 </sub>values were in the 75% ZS group, and meat from this group had the darkest colour (L* = 49.73) and the highest red colour share (a* = 5.11). Statistical analyses showed that ZS breed retained its original traits through the years of breeding. It was confirmed that meat of Złotnicka Spotted breed is characterised by excellent quality. The results indicate that ZS and Duroc breeds crossing improves fattening and slaughter performance, while maintaining good meat quality in their crosses. Results of this study may also be used by breeders. They indicate that crosses of both the breeds kept in extensive breeding may be successfully used in high quality meat production. Pork from such animals may be a raw material for market niche production, such as regional products. The use of meat from crosses in meat processing may improve both quality of the processed products and efficiency of production based on the native Złotnicka Spotted breed.  

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Section: Resultssupporting

confidence: 93%

Evaluation of fattening and slaughter performance and determination of meat quality in Złotnicka Spotted pigs and their crosses with the Duroc breed

Szulc¹,

Skrzypczak²,

Buczyński³

et al. 2012

Czech J. Anim. Sci.

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“…Average BF, FAT and PFAT of castrates were significantly higher than those of gilts (29.01 vs. 25.56 mm, 9.57 vs. 7.55 kg and 21.79 vs. 17.43%, respectively). The results are in agreement with previous reports on sex differences (Larzul et al, 1997;Tischendorf et al, 2002;Cassady et al, 2004). However, Mohrmann et al (2006) did not find any significant differences between the sexes (gilts and barrows), but gilts tended to have higher lean meat content.…”

Section: Resultssupporting

confidence: 83%

The effect of sex and slaughter weight on intramuscular fat content and its relationship to carcass traits of pigs

Bahelka¹,

Hanusová²,

Peškovičová³

et al. 2007

CZECH J ANIM SCI

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Carcass quality and intramuscular fat content of castrates and gilts are compared and a possible dependence of intramuscular fat content on sex and slaughter weight is determined in the pig population of the Slovak Republic. A total of 129 pigs of three different genotypes were included in the experiment. After slaughter, the carcasses were weighed and backfat thickness was measured. On the next day, carcass dissection described by Walstra and Merkus (1995) was determined. Four prime cuts (shoulder, loin, ham and belly) were further dissected to meat, bones and fat with skin. Intramuscular fat content was analysed in a laboratory from the samples (100 g) of musculus longissimus dorsi. The results were statistically analysed using SAS/STAT and a linear model was used to find the dependence of intramuscular fat content. Correlation coefficients between carcass traits and intramuscular fat were also calculated. Sex of pigs, and particularly weight of lean meat and weight of fatty parts had a significant effect on intramuscular fat content (P < 0.0001 and P = 0.0022) while no effect of the genotype and slaughter weight was observed. Significant differences between castrates and gilts were found in almost all observed traits, e.g. average backfat thickness (29.01 vs. 25.56 mm), percentage of meat (52.77 vs. 57.68%), intramuscular fat content (2.49 vs. 2.00%). Generally, the intramuscular fat in the pig population is not sufficient (2.25%), therefore it would be desirable to include this trait in selection strategies in pig breeding.

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“…These possible explanations are in agreement with unfavorable genetic associations that were found between backfat thickness and longevity in the Finnish Large White population (Serenius and Stalder, 2004). Moreover, Cassady et al (2004) found that offspring of GPK347 sows grew slower and had poorer carcass composition than offspring from the other 5 lines studied. In other words, because the GPK347 line has not been highly selected for meat production and growth traits, the unfavorable genetic correlations had not negatively impacted the genetic gain obtained in prolificacy and longevity.…”

Section: Line Comparisonsupporting

confidence: 77%

“…Because pigs produced by GPK347 sows grew slower and had poorer carcass composition (Cassady, et al, 2004), the total economic impact on pork production must be considered when commercial pork producers are evaluating the use of these females in their operations. Thus, although there is now information available comparing the production prolificacy and sow longevity of different genetic lines, pork producers need to evaluate the results on an individual basis.…”

Section: Line Comparisonmentioning

confidence: 99%

National Pork Producers Council Maternal Line National Genetic Evaluation Program: A comparison of sow longevity and trait associations with sow longevity1

Serenius

Stalder

Baas

et al. 2006

Journal of Animal Science

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National Pork Producers Council Maternal Line Genetic Evaluation: A comparison of growth and carcass traits in terminal progeny1

Cited by 14 publications

References 11 publications

Evaluation of fattening and slaughter performance and determination of meat quality in Złotnicka Spotted pigs and their crosses with the Duroc breed

Evaluation of fattening and slaughter performance and determination of meat quality in Złotnicka Spotted pigs and their crosses with the Duroc breed

The effect of sex and slaughter weight on intramuscular fat content and its relationship to carcass traits of pigs

National Pork Producers Council Maternal Line National Genetic Evaluation Program: A comparison of sow longevity and trait associations with sow longevity1

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