Genetic diversity and distance of Iranian goat breeds (Markhoz, Mahabadi and Lori) compared to the Beetal breed using inter-simple sequence repeat (ISSR) markers

Simaei-Soltani, Leila; Abdolmohammadi, Alireza; Zebarjadi, Alireza; Foroutanifar, Saheb

doi:10.5194/aab-59-477-2016

Cited by 5 publications

(5 citation statements)

References 18 publications

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“…Moreover, the LS phenotypic and environmental averages had considerable decreases in recent years (Figure 1), which could decrease the estimate of h 2 , as the result of an increase in phenotypic and environmental variances. Low heritability of LS in the present study supports previous concepts about the need of more studies on major genes, and finding genetic background of LS trait in different goat breeds (Simaei-Soltani et al, 2016). Low estimates were also obtained for repeatability and permanent environment coefficient; thus the LS repeatability is entirely due to permanent environmental effects.…”

Section: Discussionsupporting

confidence: 89%

Genetic parameters and trends for litter size in Markhoz goats

Abdoli

Zamani

Mirhoseini

et al. 2019

Rev Colom Cienc Pecua

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Background: Prolificacy has a high economic value and is one of the most important reproduction traits in small ruminants such as Markhoz goats, which is an endangered breed. Objective: To estimate genetic, environmental and phenotypic trends, and genetic parameters for litter size (LS), as a prolificacy trait of Markhoz goat does. Methods: The study was conducted using kidding records of 3,064 Markhoz does from 1992 to 2015. Genetic parameters were estimated with a logit link function using ASReml software, fitting a repeatability animal model, with birth year, kidding year, and kidding age as fixed effects, and direct additive genetic and permanent environmental effects as random effects. Genetic, phenotypic and environmental trends were estimated by using regression of breeding value, phenotypic value and environmental deviation averages on birth year, respectively. Results: Low and negligible heritability (0.002), repeatability (0.054) and coefficient of permanent environment (0.052) were estimated for LS, which indicates low possibility to achieve rapid genetic progress through phenotypic selection. A non-significant -actually, zero- genetic trend (0.00004 heads/kidding/year), and significant negative phenotypic and environmental trends (-0.01097 and -0.01100 heads/kidding/year, respectively) were estimated in this study. Conclusion: Optimizing environmental conditions and application of high-throughput technologies in selection programs could help reducing the extinction risk of Markhoz breed.Keywords: extinction risk, genetic trend, heritability, phenotypic selection, prolificacy. Resumen Antecedentes: La prolificidad tiene un alto valor económico y es uno de los rasgos reproductivos más importantes en pequeños rumiantes, tales como la raza caprina Markhoz. que es esta en peligro de extinción. Objetivo: Estimar lastendencias genéticas, ambientales y fenotípicas, y los parámetros genéticos para el tamaño de la camada (LS), como rasgo de prolificidad de las hembras de cabras Markhoz. Métodos: Se utilizaron registros de partos de 3.064 hembras Markhoz, de 1992 a 2015. Los parámetros genéticos se estimaron con una función de enlace logit utilizando el software ASReml, ajustando un modelo animal de repetibilidad, con el año de nacimiento, el año del parto y la edad al parto como efectos fijos, y genéticos aditivos directos y efectos ambientales permanentes como efectos aleatorios. Las tendencias genéticas, fenotípicas y ambientalesse estimaron mediante la regresión del valor de la cría, el valor fenotípico y los promedios de desviación ambiental en el año de nacimiento, respectivamente. Resultados: Se estimó la heredabilidad -baja e insignificante- (0,002), repetibilidad (0,054) y coeficiente de ambiente permanente (0,052) para LS, lo que indica una baja posibilidad de lograr un progreso genético rápido a través de selección fenotípica. Se estimó una tendencia genética no significativa -de hecho, cero- (0,00004 cabezas/parto/año) y se estimaron tendencias fenotípicas y ambientales negativas significativas (-0,01097 y -0,01100 cabezas/parto/año, respectivamente) en el período estudiado. Conclusión: La optimización de las condiciones ambientales y la aplicación de tecnologías de alto rendimiento en los programas de selección podrían reducir el riesgo de extinción de la raza Markhoz.Palabras clave: heredabilidad, prolificidad, riesgo de extinción, selección fenotípica, tendencia genética. Resumo Antecedentes: Aprolificidade tem um elevado valor económico e é uma das maisimportantes características de reprodução nos pequenos ruminantes, como a raça de caprinos Markhoz, que está em perigo de extinção. Objetivo: Estimar tendências genéticas, ambientais e fenotípicas, e parâmetros genéticos para o tamanho da serapilheira (LS), como um traço de proliferação de cabras Markhoz. Métodos: Este estudo foi realizado usando registros de parto de 3.064 Markhoz entre 1992 e 2015. Os parâmetros genéticos foram estimados com uma função logit link utilizando o software ASReml, ajustando um modelo animal de repetibilidade, com o ano de nascimento, o ano de parto ea idade de caçoar como efeitos fixos e efeitos ambientais diretos e genéticos diretos como efeitos aleatórios. As tendências genéticas, fenotípicas e ambientais foram estimadas pela regressão do valor de criação, valor fenotípico e médias de desvio ambiental no ano de nascimento, respectivamente. Resultados: Herdabilidade baixa e negligenciável (0,002), repetibilidade (0,054) e coeficiente de ambiente permanente (0,052) foram estimadas para LS, o que indica baixa possibilidade de alcançar um progresso genético rápido através da seleção fenotípica. Foi estimada uma tendência genética não-significativa e realmente zero (0,00004 cabeças/parto/ano) e tendências fenotípicas e ambientais negativas significativas (-0,01097 e -0,01100 cabeças/parto/ano, respectivamente) no período estudado. Conclusão: Parece que a otimização das condições ambientais ea aplicação de tecnologias de alto rendimento em programas de seleção poderiam reduzir o risco de extinção para a raça Markhoz.Palavras-chave: heritabilidade, prolificidade, risco de extinção, seleção fenotípica, tendência genética.

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Section: Discussionsupporting

confidence: 89%

Genetic parameters and trends for litter size in Markhoz goats

Abdoli

Zamani

Mirhoseini

et al. 2019

Rev Colom Cienc Pecua

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“…Previous DNA genotyping studies revealed moderate genetic diversity in Markhoz goat (Simaei-Soltani et al 2016). Shokrollahi (2015), Khani et al (2015), and Shokrollahi & Morammazi (2018) reported a very little genetic variation among the Markhoz goat.…”

Section: Discussionmentioning

confidence: 95%

“…Previous DNA genotyping studies revealed moderate genetic diversity in Markhoz goat (Simaei‐Soltani et al . ). Shokrollahi (), Khani et al .…”

Section: Discussionmentioning

confidence: 97%

No polymorphism of melatonin receptor 1A (MTNR1A) gene was found in Markhoz goat

Abdolahi

Shokrollahi

Saadati

et al. 2019

Veterinary Medicine & Sci

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Melatonin is the main hormone of seasonal breeding in sheep and goat which has an effect on reproductive organs via its receptors. Studies have shown that mutations in melatonin receptor 1A ( MTNR 1A) gene are related to litter size as well as the ovulation rate in sheep and goats. In this study, polymorphism of two loci in MTNR 1A melatonin receptor gene was studied in order to survey their relationship with litter size in Markhoz goats. PCR primers were employed to mask polymorphisms of MTNR 1A in 150 does by PCR ‐ RFLP method. After DNA extraction, the PCR ‐ RFLP was performed using Ecol31 I and Hpa I restriction enzymes. Results showed that these loci were not polymorphic. These results show that the fecundity of Markhoz goats is not linked to MTNR 1A. No polymorphism in MTNR 1A was found in Markhoz goats, therefore, it is essential to test polymorphism of other genes or loci to facilitate marker‐assisted selection techniques to improve reproduction traits in Markhoz goats.

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“…Ten specific ISSR primers (table 1) were used. PCR amplification protocol was carried out according to Simaei-Soltani et al, (2016) with some minor modifications. Polymerase chain reaction was performed in a 15 µL final volume containing 1 unit Taq DNA polymerase, 1.5 µL of 10× PCR buffer, 0.2 mM dNTPs, 0.25 µM of primer, 25 mM of MgCl2 and 50-100 ng of genomic DNA.…”

Section: Inter-simple Sequence Repeat (Issr) Amplificationmentioning

confidence: 99%

Multivariate Analysis of 31 Phenotypic Traits Among Major Parental Lines of Sugarcane Breeding Programs in China

2020

THE JAPS

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Lebanese mountain Baladi goats are endemic to Lebanon. However, few available genetic data on Baladi population is available. Information based on morphological and biochemical markers exists but yet remains imprecise. The aim of this study is to characterize the morphological and genetic traits of the Lebanese mountain Baladi population. The experiment was carried out in two different regions: Deir El Ahmar(1450m) and Boksmaya (400m). A total of 47 does, aging between 2-3 years, were studied; 9 quantitative traits and 5 qualitative traits were measured on each doe. The doe's genomic DNA was extracted and amplified by using PCR with a panel of 10 ISSR microsatellite markers along with collecting phenotypic data from each animal. The results revealed the presence of two main clusters both genetically and morphologically: CI and CII where most of CI animals produced a lower quantity of milk compared to CII. The mean value for all quantitative traits, except barrel length, showed a superior significant difference between groups (p≤0.05). A positive correlation between the percentage of polymorphism, quantity of milk, ears and head color in both groups was observed. This attempt was to genetically characterize Lebanese Baladi population and to correlate its phenotype with its genotype.

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Genetic diversity and distance of Iranian goat breeds (Markhoz, Mahabadi and Lori) compared to the Beetal breed using inter-simple sequence repeat (ISSR) markers

Cited by 5 publications

References 18 publications

Genetic parameters and trends for litter size in Markhoz goats

Genetic parameters and trends for litter size in Markhoz goats

No polymorphism of melatonin receptor 1A (MTNR1A) gene was found in Markhoz goat

Multivariate Analysis of 31 Phenotypic Traits Among Major Parental Lines of Sugarcane Breeding Programs in China

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