Genetic parameters for measures of residual feed intake and growth traits in seven generations of Duroc pigs

Hoque, M. A.; Kadowaki, Hiroshi; Shibata, T.; Oikawa, Takuro; Suzuki, Keiichi

doi:10.1016/j.livsci.2008.05.016

Cited by 67 publications

(62 citation statements)

References 21 publications

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“…Mijatovic et al (2005) also reported that breed had a highly significant effect to feed conversion. Substantial individual differences in feed intake exist and approximately 30% of these are explained by genetics (Cai et al, 2008;Hoque et al, , 2009). Furthermore, it has been previously demonstrated that traits contributing to feed conversion are genetically related to economically important traits such as back fat (Cai et al, 2008;Hoque et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Comparative performance of Landrace, Yorkshire and Duroc breeds of swine

Zebua

Muladno

Siagian

2017

J. Indonesian Trop. Anim. Agric.

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ABSTRAKPenelitian bertujuan untuk menganalisis perbedaan kemampuan genetik ternak babi dari bangsa Landrace, Yorkshire, dan Duroc dengan melakukan evaluasi terhadap produktivitas yang memiliki nilai ekonomi yang sangat penting. Ternak babi sebanyak 49 ekor yang terdiri dari 15 ekor jantan dan 34 ekor betina dengan bobot badan awal 18,50-21,50 kg dipelihara dalam kondisi lingkungan yang sama. Rancangan yang digunakan adalah Rancangan Acak Lengkap dengan perlakuan 3 bangsa (Landrace, Yorkshire, dan Duroc). Data dianalisa menggunakan analysis peragam (Ancova) dan uji Least Square Means. Hasil penelitian menunjukkan bahwa penampilan produksi bangsa Landrace, Yorkshire, dan Duroc berbeda signifikan terhadap konsumsi ransum harian, pertambahan bobot badan harian, konversi pakan, tebal lemak punggung, indeks seleksi, dan umur pada saat mencapai bobot 90 kg, kecuali konsumsi ransum harian pada jantan. Berdasarkan kondisi lingkungan pemeliharaan, Yorkshire dan Landrace memiliki potensi unggul dalam laju pertambahan bobot badan, konversi pakan, indeks seleksi, dan umur pada saat mencapai bobot 90 kg yang lebih singkat dibanding Duroc. Duroc berpotensi menghasilkan lemak punggung yang lebih tipis yang berpengaruh dalam kualitas daging dibanding Yorkshire dan Landrace. Kata-kata kunci: babi, bangsa, nilai produksi ABSTRACTThe objectives of this study was to analyze the comparative ability of animal genetic, using evaluation of production that has important economic traits including Landrace, Yorkshire, and Duroc breeds of swine. A total of 49 swine consist 15 boars and 34 gilts, with average body weight of 18.50-21.50 kg were used in this research. All of samples were raised in the same pen and feeding management. This research used the experimental method of Completely Randomized Design involving three treatments of animal breeds including Landrace, Yorkshire, and Duroc breeds. The data were analyzed by using analysis of covariance procedur General Linier Model and Least Square Means test. Boars and gilts were analyzed in separated data. The result showed that the effect of breed was significantly associated for all traits, but not for boars feed intake. The overall, Yorkshire and Landrace performed better than Duroc for average daily gain, feed conversion ratio, selection index, and age at 90 kg body weight. However, Duroc boars and gilts had the thinnest backfat followed by Yorkshire and Landrace.

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Section: Discussionmentioning

confidence: 99%

Comparative performance of Landrace, Yorkshire and Duroc breeds of swine

Zebua

Muladno

Siagian

2017

J. Indonesian Trop. Anim. Agric.

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“…Several researchers have studied carcass, food intake and growth traits, such as weight at different ages, growth curves and features related to growth rate of Nellore cattle (BOUQUET et al, 2010;HERD;ARCHER;ARTHUR, 2004;HOQUE et al, 2009;LANCASTER et al, 2009;LOPES et al, 2011;LOPES et al, 2012;ROBINSON;ODDY, 2004;SOUZA et al, 2008;SANTOS et al, 2012). However, research to evaluate meat quality, especially tenderness and its relationships with growth and carcass quality traits of Zebu cattle in Brazil, are incipient.…”

Section: Introductionmentioning

confidence: 99%

Quantitative genetic analysis for meat tenderness trait in Polled Nellore cattle

Castro¹,

Magnabosco²,

Sainz³

et al. 2014

Rev. Ciênc. Agron.

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-The aim of the present study was to analyze the interrelationships among the variables and also estimate the genetic correlations between tenderness (WBSF), growth (ILW, FLW and ADG) and carcass (BF, RF and LMA) features. Other purpose was to identify individuals who were more likely to be carriers of favorable genes for tenderness. Growth, carcass and tenderness data from 415 Polled Nellore animals was analyzed. Factor analysis and canonical correlations were used to analyze the phenotypic relationships. The covariance components and genetic parameters were estimated using Gibbs Sampling method. Lack of phenotypical correlations between the WBSF and the other traits were observed. The genetic correlations between WBSF and the other evaluated traits were of a low magnitude, with values of -0.15; -0.18; -0.13; 0.10; -0.12 and 0.18, between WBSF and ILW, FLW, ADG, BF, RF and LMA, respectively. The results support the conclusion that tenderness selection will not affect the selection of other economic traits and vice-versa, but for a better knowledge of the genetic relationships between meat tenderness and other traits for Polled Nellore more studies are required. The heritability estimated for WBSF was of a low magnitude (0.11 ± 0.022). Based on the principle of probability of identical genes by ancestry individuals who were more likely to be carriers of favorable genes for tenderness were identified. Further work will include creation of a segregating population that will serve as experimental material for future gene prospecting and identification research.Key works: Carcass. Shear force. Pedigree.RESUMO -Objetivou-se analisar os inter-relacionamentos entre as variáveis, além de estimar as correlações genéticas entre os grupos de características de maciez (FC), crescimento (PI, PF e GPD) e carcaça (EG, P8 e AOL). Foi proposto também, identificar indivíduos que apresentem alta probabilidade de serem portadores de genes favoráveis à maciez. Analisouse dados de 415 animais Nelore Mocho, filhos de touros representativos das principais linhagens Nelore, avaliados para características de crescimento, carcaça e maciez. Para análises de relacionamentos fenotípicos foram utilizadas análises de fatores e correlações canônicas. Os componentes de variância necessários à obtenção dos parâmetros genéticos foram estimados pelo método da Amostragem de Gibbs. Observou-se ausência de correlações fenotípicas entre FC e as outras características produtivas. As correlações genéticas entre FC e PI, PF, GPD, EG, P8 e AOL foram de baixa magnitude (-0,15; -0,18; -0,13; 0,10; -0,12 e 0,18). A seleção para a maciez não influenciará na seleção de outras características de interesse econômico e vice-versa, porém serão necessários mais estudos para melhor conhecimento sobre as relações genéticas da maciez e outras características produtivas em bovinos Nelore Mocho. A estimativa de herdabilidade para a característica FC foi de baixa magnitude (0,11 ± 0,022). Baseando-se no princípio da probabilidade de genes idênticos por descendê...

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“…RFI is a moderately heritable trait (Arthur et al, 2001;Nguyen et al, 2005;Hoque et al, 2009) that can be calculated as the difference in observed feed intake and expected feed intake given an animal's growth requirement for production and maintenance of body weight . It is an animal's residual from the regression line where observed equals expected that is its RFI index ( Figure 1).…”

Section: Expected Feed Intakementioning

confidence: 99%

“…Animals with a low RFI (LRFI) indexes consume less feed and are generally more efficient than high RFI (HRFI) animals. RFI is a moderately heritable trait (Arthur et al, 2001;Nguyen et al, 2005;Hoque et al, 2009), that can be used as a genetic selection tool. The Institut National de la Recherche Agronomique (INRA) and Iowa State University (ISU), have established multi-generational RFI swine selection projects.…”

Section: Chapter 1 General Introductionmentioning

confidence: 99%