Estimation of genetic parameters for superovulatory response traits in Japanese Black cows

Zoda, Atsushi; Urakawa, M.; Oono, Y.; Ogawa, Shinichiro; Satoh, Masahiro

doi:10.1093/jas/skab265

Cited by 9 publications

(23 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This result may actually reflect the influence of dam age: dam age was 18.8 ± 4.30 months for flushings 1–4, but 30.9 ± 4.49 months for flushings greater than 5. Consistent with this idea, Zoda and colleagues [ 55 ] reported a decrease in the number of embryos per flushing with increasing age of Japanese Black cows. Those authors attributed this age effect to age-dependent metabolic changes, which have also been reported in dairy cattle [ 72 ].…”

Section: Discussionmentioning

confidence: 68%

“…We did not observe a significant influence of donor genetic background or bull on embryo production or quality, yet several studies have pointed out the importance of selecting highly valuable animals as donors for MOET [ 52 , 53 , 54 ]. In fact, the heritability of the total number of embryos or oocytes is 0.26 in Japanese Black cattle, while the heritability of the total number of grade 1 embryos is 0.17 [ 55 ]. Our results may reflect that we excluded from the study donors that produced no embryos, and we used only highly fertile bulls.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

MOET Efficiency in a Spanish Herd of Japanese Black Heifers and Analysis of Environmental and Metabolic Determinants

Vázquez-Mosquera

Fernández-Novo

Bonet-Bo³

et al. 2022

Biology

View full text Add to dashboard Cite

Multiple ovulation and embryo transfer (MOET) systems have been intensively implemented in Japanese Black cattle in Japan and to create Japanese Black herds out of these areas. Environmental conditions influence MOET efficiency. Thus, we describe results of 137 in vivo, non-surgical embryo flushings performed between 2016–2020, in a full-blood Japanese Black herd kept in Spain and the possible effects of heat, year, bull, donor genetic value, and metabolic condition. Additionally, 687 embryo transfers were studied for conception rate (CR) and recipient related factors. A total of 71.3% of viable embryos (724/1015) were obtained (5.3 ± 4.34/flushing). Donor metabolites did not affect embryo production (p > 0.1), although metabolite differences were observed over the years, and by flushing order, probably related to the donor age. CR was not affected by embryo type (fresh vs. frozen), recipient breed, and whether suckling or not suckling (p > 0.1). CR decreased significantly with heat (44.3 vs. 49.2%; (p = 0.042)) and numerically increased with recipient parity and ET-number. Pregnant recipients showed significantly higher levels of cholesterol-related metabolites, glucose, and urea (p < 0.05). Therefore, adequate MOET efficiency can be achieved under these conditions, and heat stress should be strongly avoided during Japanese Black embryo transfers. Moreover, recipients’ metabolites are important to achieve pregnancy, being probably related to better nutrient availability during pregnancy.

show abstract

Section: Discussionmentioning

confidence: 68%

Section: Discussionmentioning

confidence: 99%

MOET Efficiency in a Spanish Herd of Japanese Black Heifers and Analysis of Environmental and Metabolic Determinants

Vázquez-Mosquera

Fernández-Novo

Bonet-Bo³

et al. 2022

Biology

View full text Add to dashboard Cite

show abstract

“…Previous studies estimated genetic parameters in pigs and cattle using transformed semen production records ( Marques et al, 2017 ; Hagiya et al, 2018 ; Rostellato et al, 2021 ). Therefore, it may be necessary to investigate the effect of data transformation on the performance of the analysis, as done by Zoda et al (2021) for superovulatory response traits in Japanese Black cattle. On the other hand, for ratio-defined traits such as PROP and MWB, theoretical investigations and computer simulations have been conducted ( Iwaisaki and Wilton, 1993 ; Ogawa and Satoh, 2020 ; Yazaki et al, 2021 ), and the results should be interpreted with caution.…”

Section: Resultsmentioning

confidence: 99%

Heritability and genetic correlation estimates of semen production traits with litter traits and pork production traits in purebred Duroc pigs

Ogawa

Kimata²,

Tomiyama³

et al. 2022

Journal of Animal Science

Self Cite

View full text Add to dashboard Cite

We estimated heritabilities of semen production traits and their genetic correlations with litter traits and pork production traits in purebred Duroc pigs. Semen production traits were semen volume, sperm concentration, proportion of morphologically normal sperms, total number of sperm, and total number of morphologically normal sperm. Litter traits at farrowing were total number born, number born alive, number stillborn, total litter weight at birth, mean litter weight at birth, and piglet survival rate at birth. Litter traits at weaning were litter size at weaning, total litter weight at weaning, mean litter weight at weaning, and piglet survival rate from birth to weaning. Pork production traits were average daily gain, backfat thickness, and loin muscle area. We analyzed 45,913 semen collection records of 896 boars, 6,950 farrowing performance records of 1,400 sows, 2,237 weaning performance records of 586 sows, and individual growth performance records of 9,550 animals measured at approximately 5 months of age. Heritabilities were estimated using a single-trait animal model. Genetic correlations were estimated using a two-trait animal model. Estimated heritabilities of semen production traits ranged from 0.20 for sperm concentration to 0.29 for semen volume and were equal to or higher than those of litter traits, ranging from 0.06 for number stillborn and piglet survival rate at birth to 0.25 for mean litter weight at birth, but lower than those of pork production traits, ranging from 0.50 for average daily gain to 0.63 for backfat thickness. In many cases, the absolute values of estimated genetic correlations between semen production traits and other traits were smaller than 0.3. These estimated genetic parameters provide useful information for establishing a comprehensive pig breeding scheme.

show abstract

“…As a result, for example, limited Y chromosome diversity has been reported in horse and cattle populations (e.g., [35,79,80]). Recent studies have examined the genetic improvement of superovulatory responses in cattle (e.g., [25,81,82]), in connection with the idea of preimplantation genomic selection (e.g., [83][84][85]). This kind of production might increase the frequency of full-sibs and reduce genetic diversity, especially with respect to the X chromosome and mitochondrial DNA.…”

Section: Discussionmentioning

confidence: 99%

“…Recent studies have investigated genetic improvement of novel traits, including fertility and disease resistance (e.g., [23][24][25]), with lower estimated heritabilities than those of production traits (e.g., [5,26,27]). An increasing number of studies have examined the relationships of sex chromosomes and mitochondria with gametogenesis, embryogenesis, immune function, feed efficiency, and heat stress (e.g., [28][29][30][31][32][33]).…”

Section: Introductionmentioning

confidence: 99%

Genetic Contributions of Genes on Sex Chromosomes and Mitochondrial DNA in a Pedigreed Population

Ogawa

Satoh

2022

Diversity

Self Cite

View full text Add to dashboard Cite

The genetic contribution with respect to autosomal genes has been widely used to evaluate the genetic diversity of a target population. Here, we developed a method to calculate the genetic contribution with respect to genes on sex chromosomes and mitochondrial DNA through pedigree analysis. To demonstrate the performance, we applied the methods for calculating genetic contributions to example pedigree data. To verify the results of genetic contribution calculations, we performed gene-dropping simulations mimicking flows of genes on autosomes, X and Y chromosomes, and mitochondrial DNA, and then compared the results from the simulation with the corresponding genetic contributions. To investigate the effect of pedigree error, we compared the results of genetic contribution calculations using pedigree data with and without errors. The results of gene-dropping simulation showed good agreement with the results of the genetic contribution calculation. The effect of pedigree errors on the calculation of genetic contribution depended on the error rate. Since the patterns of the genetic contributions of such genes might be different from those on autosomes, the novel approach could provide new information on the genetic composition of populations. The results are expected to contribute to the development of methods for sustainable breeding and population management.

show abstract

Estimation of genetic parameters for superovulatory response traits in Japanese Black cows

Cited by 9 publications

References 24 publications

MOET Efficiency in a Spanish Herd of Japanese Black Heifers and Analysis of Environmental and Metabolic Determinants

MOET Efficiency in a Spanish Herd of Japanese Black Heifers and Analysis of Environmental and Metabolic Determinants

Heritability and genetic correlation estimates of semen production traits with litter traits and pork production traits in purebred Duroc pigs

Genetic Contributions of Genes on Sex Chromosomes and Mitochondrial DNA in a Pedigreed Population

Contact Info

Product

Resources

About