Association of polymorphisms in the GH and GHR genes with growth and carcass traits in rabbits (Oryctolagus cuniculus)

Migdał, Łukasz; Pałka, Sylwia; Kmiecik, Michał; Derewicka, Olga

doi:10.17221/27/2019-cjas

Cited by 14 publications

(9 citation statements)

References 15 publications

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“…This fact is demonstrated by the higher muscularity of hind legs in final commercial crossbred H rabbits. The hind leg meat yield of rabbit genotypes in the present study was similar to that reported for the Belgian Giant Grey and Termond White rabbits [ 28 ]. In the case of LTL muscles, their yield was also slightly higher in H rabbits than in MS sired rabbits (7.8 vs. 7.5% of SW, respectively) and a higher LTL yield was found in H females than in MS sired females (7.8 vs. 7.3%, resp.).…”

Section: Discussionsupporting

confidence: 88%

Proximate Chemical Composition, Amino Acids Profile and Minerals Content of Meat Depending on Carcass Part, Sire Genotype and Sex of Meat Rabbits

Gál

Zapletal

Jakešová

et al. 2022

Animals

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The aim of the study was to assess the effects of the sire genotype, sex and carcass part on the composition of the meat of rabbits, which were fattened under conditions where no synthetic drugs were used. As for carcass parts, the higher content of both total amino acids (AA) and all essential AA (EAA) monitored was found in the Longissimus thoracis et lumborum (LTL) muscle as compared to hind leg meat (p ˂ 0.001). Significant effects of the rabbit sire genotype and the genotype x sex interaction on proportions of some AA in meat were found (p ˂ 0.001). Crossbreeding of the Mecklenburger Schecke (MS) sires with a commercial dam line of HYLA rabbits resulted in a lower proportion of the total AA and all EAA monitored in meats of MS sired males as compared to MS sired females and HYLA rabbits (p ˂ 0.05). The sex-related effect on AA profile was not so noticeable in final commercial crossbreds of HYLA rabbits when compared to MS sired progeny. These findings point to a possible risk of alterations in the nutritional quality of meat proteins when using different rabbit sire genotypes than those originally intended for the specific commercial crossbreeding scheme. However, on the contrary, higher contents of magnesium (p ˂ 0.05), manganese (p ˂ 0.001) and zinc (p ˂ 0.05) were found in meats of MS sired progeny as compared to HYLA rabbits.

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Section: Discussionsupporting

confidence: 88%

Proximate Chemical Composition, Amino Acids Profile and Minerals Content of Meat Depending on Carcass Part, Sire Genotype and Sex of Meat Rabbits

Gál

Zapletal

Jakešová

et al. 2022

Animals

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“…Generally, growth of an animal is affected by complex mechanisms, acting in para-, endo-and autocrine ways (Migdal et al, 2019) and growth as such is considerably important in rabbit meat production (Blasco et al, 2018). Growth of the new-born rabbit kits depends on the amount of suckled milk, while mainly for a small kit it is important to suck milk immediately after its birth (Szendrö et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Growth of suckled rabbit kits depending on litter size at birth

Zapletal

Švancarová

Gálik

2021

Acta fytotechn zootechn

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Licensed under a Creative Commons Attribution 4.0 International License Standardization of litter size after birth is a common management practice used on broiler rabbit farms to optimize the growth intensity of kits in the litter. The aim of the present study was to evaluate the effect of the litter size at birth before the standardization performed on the subsequent growth intensity of suckled HYPLUS broiler rabbit kits. A total of 70 litters with a total of 639 newborn kits were selected for evaluation, while assessed litter sizes at birth covered 7 to 12 kits per litter. The assessed levels of litter sizes at kindling did not show significant differences in the average birth weight of the kits. Although the litter size was standardized to 8 kits for primiparous and to 9 kits for multiparous does on the first day after birth, the intrinsic litter size of does at kindling had a highly significant effect on the average live weight (LW) of 19-day old suckled kits (P <0.01). The average LW of kits at this age were higher in females which kindled 7 and 8 kits in litter compared to females in which the number of kits born in the litter was between 9 and 12. The same trend as in the case of LW was found for average daily gain values, while its higher values (P <0.01) were found in litters where does kindled only 7 and 8 kits per litter (19.1 and 17.9 g day -1 , resp.) in contrast to litters in which does kindled 9 to 12 kits per litter (14.0 to 15.4 g day -1 ). The performed standardization of litter size in the involved farm thus was not a sufficient management practice to reduce the variability of the average LW of suckled kits at 19 days of age.

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“…To promote the growth traits of fish, selective breeding may be an effective method under certain conditions [34]. Molecular markers were supposed to promote the accuracy of selection and increase the genetic gain of significant traits [35]. SNP, the third-generation molecular marker, has been widely reported in the genetic breeding of aquaculture animals in recent years [10].…”

Section: Discussionmentioning

confidence: 99%

Novel SNPs in the 3′UTR Region of GHRb Gene Associated with Growth Traits in Striped Catfish (Pangasianodon hypophthalmus), a Valuable Aquaculture Species

Jiang

Ruan

et al. 2022

Fishes

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The striped catfish, Pangasianodon hypophthalmus is an important freshwater aquaculture species in Southeast Asian countries due to its rapid growth. The growth hormone receptor (GHR) is a significant regulatory factor for the growth axis and has great potential applications in animal genetic breeding. This study aims to characterize the GHRb cDNA of the striped catfish and analyze the distribution of its mRNA. Screening of single nucleotide polymorphisms’ (SNPs) loci and diplotypes was performed to provide basic information for the assisted selection of molecular markers in genetic breeding. The results showed that the GHRb cDNA of striped catfish had 2791 bp, which encoded for 569 amino acids. In a phylogenyic study, the ghrb of the striped catfish was clustered with those of other catfish and they were highly homologous. Quantitative real-time PCR (qRT-PCR) experiments showed that GHRb mRNA was expressed in ten different organs of the striped catfish, with the highest expression level in the liver. Five SNP and a haplotype block were identified in the 3′UTR of the GHRb gene using the direct sequencing of 307 individuals. Three haplotypes were found and four diplotypes were constructed. The association analysis revealed that these polymorphisms were significantly associated with growth traits in the striped catfish (p < 0.05). These polymorphisms will provide a valuable reference for future molecular genetic marker-assisted breeding of striped catfish.

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Association of polymorphisms in the GH and GHR genes with growth and carcass traits in rabbits (Oryctolagus cuniculus)

Cited by 14 publications

References 15 publications

Proximate Chemical Composition, Amino Acids Profile and Minerals Content of Meat Depending on Carcass Part, Sire Genotype and Sex of Meat Rabbits

Proximate Chemical Composition, Amino Acids Profile and Minerals Content of Meat Depending on Carcass Part, Sire Genotype and Sex of Meat Rabbits

Growth of suckled rabbit kits depending on litter size at birth

Novel SNPs in the 3′UTR Region of GHRb Gene Associated with Growth Traits in Striped Catfish (Pangasianodon hypophthalmus), a Valuable Aquaculture Species

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