Association between insulin-like growth factor I (IGF-I) microsatellite polymorphisms and important economic traits in pigs

Faria, Danielle Assis de; Peixoto, J. de O.; Lopes, Paulo Sávio; Paiva, Samuel Rezende; Silva, Priscila Vendramini; Guimarães, Simone Eliza Facioni

doi:10.1590/s1516-35982009000200007

Cited by 7 publications

(7 citation statements)

References 15 publications

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“…Among barrows, Duroc showed an improved performance compared with Piau crossbred, but did not differ from Pietrain crossbred pigs. When univariate studies approaching the original variables were employed, similar results were observed (Faria et al, 2009;Bertol et al, 2013). Pietrain pigs have lower growth rate and slaughter weight compared with Duroc pigs (Bertol et al, 2013).…”

Section: Effects Of Genetic Group Nutritional Plan and Sex On Latent ...supporting

confidence: 52%

Depicting latent variables considering different pig genetics and nutritional plans in crossbred pigs

Henriques¹,

Silva²,

Veroneze³

et al. 2022

Revista Brasileira De Zootecnia

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Breeding and geneticsFull-length research article Depicting latent variables considering different pig genetics and nutritional plans in crossbred pigsABSTRACT -We aimed to reduce the dimensionality of quantitative traits in pigs applying factor analysis. Quantitative variables were collected, and the factor analysis extracted five factors with biological meaning related to performance, carcass quality, carcass yield, meat quality, and initial pH. These factors were posteriorly used as dependent variable to evaluate the effects of genetic groups (Piau, Duroc, and Pietrain crossbreds), nutritional plans (low, medium and high lysine levels) and sex. An interaction effect between genetic group and sex was observed in performance, in which Duroc crossbred showed the greatest scores. The Pietrain genetic group showed greater values of carcass quality compared with Duroc and Piau, while Piau crossbred pigs had greater values for meat quality compared with Pietrain and Duroc. A greater carcass yield was observed in Pietrain crossbred compared with Duroc pigs. Pigs fed under low lysine level had the lowest performance values. Carcass yield was affected by nutritional plans, in which the medium lysine level showed the greatest values. Meat quality was improved by the nutritional plan with high lysine level compared with the low lysine level. Initial pH showed increased means when using nutritional plans with low and medium lysine levels in diet composition. With regard to sex effects, a greater carcass quality was found for gilts compared with barrows. The reduction of the data dimensionality allowed the joint evaluation of genetic group, nutritional plan, and sex based on new latent variables that represented the original dataset under easier framework based on factors' biological interpretation.

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Section: Effects Of Genetic Group Nutritional Plan and Sex On Latent ...supporting

confidence: 52%

Depicting latent variables considering different pig genetics and nutritional plans in crossbred pigs

Henriques¹,

Silva²,

Veroneze³

et al. 2022

Revista Brasileira De Zootecnia

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“…Moreover, the discrepancy from each paternal breed that was used in the present study to compose the genetic groups affected the performance traits. Duroc pigs have a high BW gain as one of the main characteristics of the breed (Wood et al, 2004), while Pietrain pigs have a low feed intake (Bertol et al, 2013) compared to other genetically improved breeds, and the Piau breed is mainly characterized by its slow growth rate (Faria et al, 2009;Peixoto et al, 2009). The low feed intake of Pietrain compared to Duroc crossbred gilts is due to the selection process for a low feed conversion rate and high lean growth that Pietrain has undergone, which has negatively impacted their voluntary intake (Bertol et al, 2013).…”

Section: Giltsmentioning

confidence: 99%

Effects of nutritional plans and genetic groups on performance, carcass and meat quality traits of finishing pigs

et al. 2019

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“…However, our results were inconsistent with the study of Amills et al [ 38 ], who suggested that polymorphism of the IGF-I gene led to differences in gene expression. In swine, the IGF-I microsatellite may be located at the 5′ region of the gene close to the promoter region and linked to some other loci in the same chromosome region, which is responsible for the effect on growth traits [ 39 ]. Perhaps the difference in BW among IGF-I genotypes in this study is due to a linkage with other loci in the same chromosome region.…”

Section: Resultsmentioning

confidence: 99%

Association of growth hormone and insulin-like growth factor I genotype with body weight, dominance of body weight, and mRNA expression in Korat slow-growing chickens

et al. 2021

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Objective: Growth hormone (GH) and insulin-like growth factor I (IGF-I) play a critical role in animal growth rates. We aimed to investigate the effect of GH and IGF-I genotypes on body weight (BW), dominance, and gene expression in slow-growing chickens at different ages.Methods: A total of 613 Korat chickens (KRs) were bred and divided into three groups by genotype -A1A1, A1A3, and A3A3 for GH and AA, AC, and CC for IGF-I. Chickens were weighed every two weeks, and liver and breast muscle tissues were collected at 10 weeks of age. Genetic parameters of KRs were estimated using ASReml software. GH and IGF-I mRNA levels were measured by quantitative PCR. Significant differences between traits were analyzed using the generalized linear model.Results: A significant effect of GH genotypes on BW was found at most ages, and the A1A1 genotype had the highest value of BW. Compared with the A3A3 genotype, the A1A1 and A1A3 genotypes showed a higher dominance effect at 0 and 2 weeks, and genotype A1A1 had the highest value of dominance at 8 weeks of age. A difference in GH mRNA levels between genotypes was detected in breast muscle at 6 weeks and in the liver tissue at 2 weeks.In the case of IGF-I gene, the AA genotype had the highest BW at the beginning of life.Significant differences in BW dominance were found at 2 weeks. However, IGF-I mRNA levels were not different among genotypes in both breast muscles and liver tissues. Conclusion:Our results revealed that GH and IGF-I influence growth, but may not be involved in heterosis. GH can be used as a marker gene in selection programs for growth because the homozygous genotype (A1A1) had the highest BW at all ages. IGF-I is not a useful marker gene for selection programs.

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Association between insulin-like growth factor I (IGF-I) microsatellite polymorphisms and important economic traits in pigs

Cited by 7 publications

References 15 publications

Depicting latent variables considering different pig genetics and nutritional plans in crossbred pigs

Depicting latent variables considering different pig genetics and nutritional plans in crossbred pigs

Effects of nutritional plans and genetic groups on performance, carcass and meat quality traits of finishing pigs

Association of growth hormone and insulin-like growth factor I genotype with body weight, dominance of body weight, and mRNA expression in Korat slow-growing chickens

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