Estimation of the variance due to parent-of-origin effects for productive and reproductive traits in Lori-Bakhtiari sheep

Roudbar, Mahmoud Amiri; Abdollahi-Arpanahi, Rostam; Mehrgardi, Ahmad Ayatollahi; Mohammadabadi, Mohammadreza; Yeganeh, A. Taheri; Rosa, Guilherme J. M.

doi:10.1016/j.smallrumres.2018.01.022

Cited by 46 publications

(26 citation statements)

References 25 publications

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“…Amiri Roudbar et al (2017), who worked on Iran-Black sheep, reported estimates of maternal imprinting heritability for weaning weight and 6 months weight as 0.22 and 0.21, respectively. In addition, in Lori-Bakhtiari sheep, Amiri Roudbar et al (2018) estimated maternal imprinting heritability for birth weight, weaning weight, 9 months weight and pre-and postweaning growth rates as 0.23, 0.10, 0.13, 0.16 and 0.05, respectively. The difference between estimates of imprinting effects in different breeds of sheep could be because of the different genetic structures of the populations, the amount of data used and the model fitted.…”

Section: Discussionmentioning

confidence: 99%

“…According to the geneimprint website (https://www.geneimprint.com), there are 17 maternal and 14 paternal imprinted genes in sheep, of which some genes have been shown that affect growth and reproduction traits (Davis et al, 2001;Tellam et al, 2012). Despite this, little effort has been made to quantify imprinting effects on the growth traits of sheep (Amiri Roudbar et al, 2017Roudbar et al, , 2018. In addition, for efficiency-related traits such as the Kleiber ratio (Kleiber, 1947), there are no previous reports regarding imprinting effects.…”

Section: Introductionmentioning

confidence: 99%

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Parental imprinting effects on growth traits and Kleiber ratio in sheep

et al. 2022

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The goal was to study imprinting effects on birth weight (BW), weaning weight (WW), six months weight (W6), pre- and post-weaning growth rate (GRa and GRb), and pre- and post-weaning Kleiber ratio (KRa and KRb) in Baluchi and Makuie sheep breeds. Analyses were done in a two steps process. In the first step, each trait was analysed with a series of 12 univariate animal models, including different combinations of direct and maternal effects and the best model was selected by the AIC criterion. In the second step, three new models were fitted by adding either maternal imprinting effect, paternal imprinting effect, or both of them, respectively, to the best model already selected in the first step, and changes in AIC were monitored. (Co)variances between traits were estimated using bivariate analyses. In Baluchi sheep, for BW, WW and W6, estimates of maternal imprinting heritability ( ${\boldsymbol h}_{{\boldsymbol mi}}^2$ ) were 0.12 ± 0.02, 0.08 ± 0.01 and 0.09 ± 0.01, respectively. In Makuie sheep, paternal imprinting heritability ( ${\boldsymbol h}_{{\boldsymbol pi}}^2$ ) for BW, WW, W6, GRb and KRb were 0.17 ± 0.05, 0.8 ± 0.05, 0.38 ± 0.10, 0.71 ± 0.15 and 0.65 ± 0.13, respectively. In Baluchi sheep, strong maternal imprinting correlations were observed between BW and WW (0.93 ± 0.05), BW and W6 (0.80 ± 0.07) and WW and W6 (0.91 ± 0.02). In Makuie sheep, paternal imprinting correlations ranged from −0.97 ± 0.33 (BW-GRb) to 0.99 ± 0.47 (GRb-KRb). It was concluded that imprinting effects need to be included in the statistical model to increase the accuracy of genetic evaluation. However, to have accurate and reliable estimates of imprinting effects, the availability of large data sets and deep pedigrees are necessary.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Parental imprinting effects on growth traits and Kleiber ratio in sheep

et al. 2022

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“…Thus, combined trials with emphasis on administration and genetic progress to improve animal outputs are of decisive significance ( Masoudzadeh et al., 2020b ; Mohammadabadi et al., 2017 ). Economical and biological efficiency of sheep production enterprises generally improves by increasing productivity and reproductive performance of ewes ( Mohammadabadi 2016 ; Amiri Roudbar et al., 2017 , 2018 ; Ghotbaldini et al., 2019 ; Mohammadabadi et al., 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Analysis of genetic parameters and genetic trends for early growth and reproductive traits of Doyogena sheep managed under community-based breeding program

Habtegiorgis¹,

Haile²,

Getachew³

et al. 2022

Heliyon

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“…(2004) have studied genetic diversity of DLK1 and reported that a correlation exists among its polymorphisms and its polar over-dominant inheritance, animal development, obesity, and composition of body. According to the study by Amiri Roudbar et al. (2018) , when a sheep genotype is heterozygous for the DLK1-MEG3 domain and inherits the mutation from father, it perfectly produces a muscular hypertrophy phenotype different from the normal phenotype.…”

Section: Introductionmentioning

confidence: 99%

Fennel (Foeniculum vulgare) seed powder increases Delta-Like Non-Canonical Notch Ligand 1 gene expression in testis, liver, and humeral muscle tissues of growing lambs

Mohammadabadi

Masoudzadeh

Khezri

et al. 2021

Heliyon

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Delta-Like Non-Canonical Notch Ligand 1 (DLK1) is one of the key genes involved in the development of muscle, liver, pancreas, and lung cells; adipocytes production; and the improvement of digestion, growth performance, and meat quality. It has been documented that fennel is effective on increasing the DLK1 gene ( DLK1 ) expression in the testis, liver, and muscle tissues, which may consequently have important implications for sheep production. Hence, the aim of the current investigation was to evaluate the fennel seed powder's effect on DLK1 expression in testis, liver, and humeral muscle tissues in growing lambs. For the purpose of this study, 30 male Kermani sheep were fed with three different group of diets (number of animals in each group was 10), including control (without any fennel seed powder), treatment 1 (with 10 g/kg of dry matter (DM) fennel seed powder), and treatment 2 (with 20 g/kg of DM fennel seed powder) during a 3-month period. Thereafter, total RNA was extracted, cDNA was synthesized, and Real-Time PCR was performed. The addition of fennel seed powder (in the treatment 1 and treatment 2 groups) in the growing lambs diets consequently resulted in greater expression of DLK1 in both the liver and humeral muscle tissues compared to the testis tissue (P < 0.05). Furthermore, the increased DLK1 expression was higher in the tissue of humeral muscle (P < 0.05) in comparison to the other two tissues. As well, the concentration of blood testosterone was greater (P < 0.05) for the animals fed with fennel powder compared to growing lambs fed with the control diet. However, the concentrations of blood liver enzymes, including serum glutamic oxaloacetic transaminase (SGOT) and serum glutamic pyruvic transaminase (SGPT), decreased by the addition of 10 g/kg DM fennel to diets of lambs compared to the control diet (no fennel). Therefore, it can be concluded that using fennel seed powder in the diet of growing lamb by affecting the expression of DLK1, can improve the concentrations of blood testosterone, SGOT, SGPT, and muscle structure (increased mass of muscle and size of muscle fiber).

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Estimation of the variance due to parent-of-origin effects for productive and reproductive traits in Lori-Bakhtiari sheep

Cited by 46 publications

References 25 publications

Parental imprinting effects on growth traits and Kleiber ratio in sheep

Parental imprinting effects on growth traits and Kleiber ratio in sheep

Analysis of genetic parameters and genetic trends for early growth and reproductive traits of Doyogena sheep managed under community-based breeding program

Fennel (Foeniculum vulgare) seed powder increases Delta-Like Non-Canonical Notch Ligand 1 gene expression in testis, liver, and humeral muscle tissues of growing lambs

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