Genetic parameters of birth weight trait in dromedary camels (Camelus dromedarius)

Bene, S.; Szabó, Ferenc; Polgár, J. P.; Juhász, Judit; Nagy, P.

doi:10.1007/s11250-020-02256-z

Cited by 4 publications

(6 citation statements)

References 37 publications

(54 reference statements)

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“…In summary, it can be concluded that the dromedary camel's h 2 d of GL was similar to values in cattle but higher than those in horses, the h 2 m of GL was similar to values in cattle but lower than those in horses, the r dm value was similar to values in horses but lower than those in cattle, and the c 2 of GL was higher than those in cattle and horses. In this study, the genetic parameters of GL of dromedary camels were partially different from those published for BW of camels previously (Bene et al, 2020). In case of GL the h 2 d was higher, the h 2 m was lower and the c 2 was slightly lower that those observed for the BW of camels.…”

Section: Discussioncontrasting

confidence: 91%

“…The present study is a continuation of our earlier work (Bene et al, 2020) on dromedary camels. Due to the similarity between the database and methods used, some details of the Materials and Methods described in our previous publication will not be repeated here.…”

Section: Methodsmentioning

confidence: 60%

“…During this period, a total of 58 male (bull) and 2,087 female (dam) dromedaries were included into the breeding programme and 4,084 calves (progeny) were delivered on the farm (Table 2). Further details on farm management have been described previously (Nagy et al, 2013;Bene et al, 2020). Data were included only for deliveries between 344 and 420 days of gestation (range 76 days), and outliers below and above this range were excluded from the analysis.…”

Section: Location Of the Study Number Of Animalsmentioning

confidence: 99%

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Genetic parameters of gestation length trait in dromedary camels (Camelus dromedarius)

Bene

Szabó

Polgár

et al. 2021

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Gestation length (GL) data of dromedary camels were analysed for the period from 2007 to 2018. The database of the largest dairy camel herds (Dubai, United Arab Emirates) was used in this study. The data of 4,084 camels included in the assessment were classified into six ecotypes (Emirati, Emirati cross, Black, Pakistani, Saudi-Sudanese and Saudi cross). The aim of the study was to describe the heritability of GL of camels and the breeding value (BV) of sires for this trait. The genetic parameters of GL were estimated by the General Linear Model method and two Best Linear Unbiased Prediction (BLUP) animal models as well. The mean (±SE) of GL of camels was 384.3 ± 0.2 days. The direct heritability of GL (0.26 ± 0.06–0.36 ± 0.08) was higher than the maternal heritability (0.00 ± 0.05–0.13 ± 0.06) obtained. The maternal permanent environmental effect (0.15 ± 0.05) was similar to the results estimated previously in dromedary camel, but higher than the data reported by relevant sources in other species. Based on the results of this study it can be concluded that the GL of dromedary camels is a species-specific value similar to that in cattle, which is less affected by the maternal influence. Considerable differences (16 days) exist among male dromedaries in their BV for the GL trait.

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Section: Discussioncontrasting

confidence: 91%

Section: Methodsmentioning

confidence: 60%

Section: Location Of the Study Number Of Animalsmentioning

confidence: 99%

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Genetic parameters of gestation length trait in dromedary camels (Camelus dromedarius)

Bene

Szabó

Polgár

et al. 2021

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“…During the current course of the study, it was observed that birth weight of camels significantly affected their productive potential. Birth weight data of dromedary calves from the database of one of the world's largest dairy herds Dubai, UAE, was evaluated by Bene et al (2020). Based on the results of this study, they concluded that the birth weight of dromedary calves was more influenced by the dam's intrauterine rearing capacity and by the environment, management and feeding of the pregnant female camels than the hereditary growth potential.…”

Section: Productive Parametersmentioning

confidence: 99%

Socio-economic constraints on camel production in Pakistan’s extensive pastoral farming

et al. 2021

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The present research is aimed to evaluate the diverse husbandry practices, ethno-veterinary practices, socio-economic status and distressing constraints of camel pastoralists inhabiting desert (Thal) areas of Pakistan, where they maintain herds of Marecha and Barela dromedaries in extensive production regimes. For this purpose, 200 pastoralists were selected at random to fill out an on-site questionnaire. According to the farmers’ responses, it was perceived that their living status had improved in the last decades due to the progressive optimization of camel productivity and herdsmen responsiveness. In contrast, calf mortality rates, some traditional husbandry practices and the lack of market investments continued to be the major constraints affecting camel overall production. Ethno-veterinary medicines are widely applied as primary health care, thus influencing the general health, production potentials and relief of camels in the study region. With this scenario, concerned stakeholders and authorized institutions must re-evaluate the urgent needs of indigenous communities; their education and husbandry skills to promote economic/ financial support in low-income remote areas. In turn, traditional communities will be adapted to the changing socio-economic and cultural values with regard to camel husbandry and welfare. Current societal perceptions and demands within this livestock production industry, where camels are conceived as a sustainable food security animal, if accomplished to the highest possible extent, will increase effectiveness of the camel value chain and breeders’ quality of life will be noticeably enhanced. However, this success could be multiplied if government may devise community education, veterinary cover, marketing facilitates and interest-free small loans for pastoralists.

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“…Estimates of heritability, repeatability and breeding values of meat yield, milk yield, growth measures, reproductive and adaptive traits are lacking in African camels, unlike in others ( Bene et al, 2020 ). The only available information was obtained on 302 records on lactation over a 10-year period for a herd of camels in Egypt with respect to total milk yield (TMY), day milk yield (DMY) and length of lactation period (LP).…”

Section: Genetic Parameters Estimationmentioning

confidence: 99%

Exploiting morphobiometric and genomic variability of African indigenous camel populations-A review

et al. 2022

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Camels (Camelus dromedarius) in Africa are adapted to arid and the semi-arid environmental conditions, and are valuable for meat, milk and fiber production. On account of the growing demand for camels in this continent, there is a need for knowledge on their phenotypic and genetic diversity. This is fundamental to sustainable herd management and utilization including the design of appropriate breeding and conservation strategies. We reviewed studies on the phenotypic and genetic characterization, breeding objectives, systems of production, productive and reproductive performances, and pathways for the sustainable rearing and use of camels in Africa. The morphological and genetic diversity, productive and reproductive abilities of African camels suggest the existence of genetic variations that can be utilized for breeds/ecotypes’ genetic improvement and conservation. Possible areas of intervention include the establishment of open nucleus and community-based breeding schemes and utilization of modern reproductive technologies for the genetic improvement of milk and meat yields, sustainable management of rangelands, capacity building of the pastoralists and agro-pastoralists, institutional supports, formation of centralized conservation centres and efficient and effective marketing systems.

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Genetic parameters of birth weight trait in dromedary camels (Camelus dromedarius)

Cited by 4 publications

References 37 publications

Genetic parameters of gestation length trait in dromedary camels (Camelus dromedarius)

Genetic parameters of gestation length trait in dromedary camels (Camelus dromedarius)

Socio-economic constraints on camel production in Pakistan’s extensive pastoral farming

Exploiting morphobiometric and genomic variability of African indigenous camel populations-A review

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