Bayesian estimate of genetic parameters for growth traits in Lori Bakhtiari sheep

Ghaderi–Zefrehei, Mostafa; Safari, Abbas; Moridi, Misagh; Khanzadeh, Hassan; Dehsaraei, Azar Rashidi

doi:10.1007/s11250-021-02900-2

Cited by 10 publications

(7 citation statements)

References 22 publications

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“…Higher estimates ranging from 0.31 to 0.50 were observed in different sheep breeds [ 15 , 17 , 19 , 31 , 32 , 38 ]. The estimate of

was consistently within the range of 0.18 to 0.23 reported in the literature [ 12 , 16 , 18 , 29 , 33 , 37 ] for Dağlıç, Kermani, Chokla, Lori Bakhtiari, Alpine Merino, and Awassi sheep breeds. However, some reports [ 11 , 24 , 35 , 36 ] indicated lower heritability estimates in Dağlıç (0.05), Moghani (0.09), Lori (0.006), and Harnali (0.10) sheep.…”

Section: Resultssupporting

confidence: 81%

“…The direct heritability (0.47 ± 0.05) of W12 was moderately high. Lower estimates were reported for W12 in Moghani [ 24 ], Mecheri [ 2 , 34 , 39 ], Baluchi [ 27 ], Lori [ 37 ], Harnali [ 22 , 36 ], Bonga [ 17 ], Lohi [ 15 ], and Dorper [ 29 ] sheep within the range of 0.09–0.32. Maternal heritability for W12 (0.26 ± 0.04) was lower than the estimate of 0.39 from Areb et al [ 17 ] in Bonga sheep.…”

Section: Resultsmentioning

confidence: 99%

“…In agreement with the present study, the results of Bahreini Behzadi et al [ 33 ], Kushwaha et al [ 18 ], Jafaroghli et al [ 24 ], Thiruvenkadan et al [ 34 ], and Mohammadi et al [ 35 ] indicated Model 3 as the most suitable for WW. However, Chauhan et al [ 36 ], Areb et al [ 17 ], Ghaderi-Zefrehei et al [ 37 ], Oyieng et al [ 19 ], Li et al [ 29 ], Sharif et al [ 15 ], Hızlı et al [ 16 ], and Sallam et al [ 28 ] showed different models as the most favorable. The estimate of direct heritability for WW was 0.22 ± 0.02 for Model 3.…”

Section: Resultsmentioning

confidence: 99%

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Estimation of (Co) Variance Components and Genetic Parameters for Pre- and Post-Weaning Growth Traits in Dağlıç Sheep

Koçak,

Çinkaya,

Tekerli

et al. 2023

Animals

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The goal of this study was to estimate (co) variance components and genetic parameters for pre- and post-weaning growth traits in Dağlıç sheep, considering the direct additive genetic, maternal genetic, and maternal permanent environmental effects, with different statistical models. The information of 21,735 native Dağlıç lambs born between 2011 and 2021 was used to estimate (co) variance components by the Average Information-Restricted Maximum Likelihood algorithm. The results showed that the most suitable model was Model 3 for birth weight (BW), average daily gain (ADG), and weaning weight (WW). Model 4 was the most appropriate for weight at three (W3), weight at six (W6), and weight at twelve months of age (W12). The direct heritabilities for BW, W3, ADG, WW, W6, and W12 were 0.35 ± 0.02, 0.36 ± 0.03, 0.27 ± 0.02, 0.22 ± 0.02, 0.47 ± 0.05, and 0.47 ± 0.05, respectively. Genetic and phenotypic correlations amongst the traits were in the range of 0.103 ± 0.008 to 0.995 ± 0.002. These results can be used for the improvement of growth traits in the Dağlıç breed of sheep through selection.

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“…Higher estimates ranging from 0.31 to 0.50 were observed in different sheep breeds [ 15 , 17 , 19 , 31 , 32 , 38 ]. The estimate of

Section: Resultssupporting

confidence: 81%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Estimation of (Co) Variance Components and Genetic Parameters for Pre- and Post-Weaning Growth Traits in Dağlıç Sheep

Koçak,

Çinkaya,

Tekerli

et al. 2023

Animals

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“…However, regression modelling indicated that sex was not a significant factor in terms of positive outcomes of vaccination such as increased weight gain and haemoglobin levels within normal levels. Male lambs typically display faster growth rates and attain a greater mature weight than female lambs [51][52][53]. In particular, Texel sheep demonstrate greater growth and muscularity in comparison to other sheep breeds [54] and mixed Texel-breeds show better growth performance [55].…”

Section: Discussionmentioning

confidence: 99%

Targeting Secreted Protease/Anti-Protease Balance as a Vaccine Strategy against the Helminth Fasciola hepatica

et al. 2022

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The liver fluke Fasciola hepatica is an economically important global pathogen of humans and their livestock. To facilitate host invasion and migration, F. hepatica secretes an abundance of cathepsin peptidases but prevents excessive damage to both parasite and host tissues by co-secreting regulatory peptidase inhibitors, cystatins/stefins and Kunitz-type inhibitors. Here, we report a vaccine strategy aimed at disrupting the parasite’s protease/anti-protease balance by targeting these key inhibitors. Our vaccine cocktail containing three recombinant stefins (rFhStf-1, rFhStf-2, rFhStf-3) and a Kunitz-type inhibitor (rFhKT1) formulated in adjuvant Montanide 61VG was assessed in two independent sheep trials. While fluke burden was not reduced in either trial, in Trial 1 the vaccinated animals showed significantly greater weight gain (p < 0.05) relative to the non-vaccinated control group. In both trials we observed a significant reduction in egg viability (36–42%). Multivariate regression analyses showed vaccination and increased levels of IgG2 antibodies specific for the F. hepatica peptidase inhibitors were positive indicators for increased weight gain and levels of haemoglobin within the normal range at 16 weeks post-infection (wpi; p < 0.05). These studies point to the potential of targeting peptidase inhibitors as vaccine cocktails for fasciolosis control in sheep.

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“…The reason for this is due to the fact that the ewes at this stage provide their lambs with the necessary care and sufficient quantities of milk, regardless of their age [29]. While these results nonagree with [30,31,32]. They mentioned that the reason for this is that the ewes, with the advancing age, develop their uterus to create the appropriate conditions for the growth of the fetus.…”

Section: Dam Age At Birthmentioning

confidence: 99%

Relationship of Body Weights with the Productive Performance of Lambs of the Awassi and Karakul Breeds and Crossbred Sheep

Ali,

Altaei

2023

IOP Conf. Ser.: Earth Environ. Sci.

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A study was carried out on 60 ewes of the Awassi and Karakul breeds, and cross at age of birth, weaned and 6 months in Barakat Abi Al-Fadl Al-Abbas Station in Karbala Governorate, Iraq from the first of June 2022 until the first of June of the year 2023.with the aim of studying relationship between body weights (BW) of lambs and productive performance (PP) through a set of factors (Genetic group - Sex of lamb - Age of dams - Month of birth - Weight of dams), The statistical analysis system (SAS) was used to analyze the data. The result is displayed as follows: The genetic group, the sex of lambs, the age of the ewe, and the month of birth didn’t affect BW and average weight gain (AWG) of lambs at birth, weaning, and 6 months of age. Only weight of the ewe had a significant effect (P<0.05) on weight of lambs at 6 months of age. The ewes weighing more than 48 kg were superior to the rest of the other weights, with an average weight of 28.35 kg, while the weight of the ewe did not affect the weight of lambs at birth and weaning, also affected weight of the ewe on rate of weight gain at birth, weaning, and 6 months, with the superiority of ewes weighing more than 48 kg over the rest of the weights. Weaning weight was positively correlated with birth weight and highly significant (P<0.01), and the regression coefficient between 6-month-old body weight and weaning weight was high and significant (P<0.01).

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Bayesian estimate of genetic parameters for growth traits in Lori Bakhtiari sheep

Cited by 10 publications

References 22 publications

Estimation of (Co) Variance Components and Genetic Parameters for Pre- and Post-Weaning Growth Traits in Dağlıç Sheep

Estimation of (Co) Variance Components and Genetic Parameters for Pre- and Post-Weaning Growth Traits in Dağlıç Sheep

Targeting Secreted Protease/Anti-Protease Balance as a Vaccine Strategy against the Helminth Fasciola hepatica

Relationship of Body Weights with the Productive Performance of Lambs of the Awassi and Karakul Breeds and Crossbred Sheep

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