Estimates of repeatability and heritability of productive and reproductive traits in a herd of Jersey cattle

Román, Rafael; Wilcox, C.J.; Martin, F. G.

doi:10.1590/s1415-47572000000100021

Cited by 33 publications

(31 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the case of fat percentage, protein percentage and SCC, the estimated variability is in correspondence with the heritability of these traits. The heritability values estimated in Jersey cows ranged from 0.38 to 0.72 for fat percentage and from 0.34 to 0.57 for protein percentage (Roman et al, 2000). In the case of SCC, the heritability was estimated as low and in Jersey cows it ranged from 0.04 to 0.18 (Mostert et al, 2004).…”

Section: Discussionmentioning

confidence: 94%

ANXA9, SLC27A3, FABP3 and FABP4 single nucleotide polymorphisms in relation to milk production traitsin Jersey cows

Kulig¹,

Kowalewska-Łuczak²,

Kmiec³

et al. 2010

CZECH J ANIM SCI

View full text Add to dashboard Cite

Milk components originating from blood plasma substrates are synthesized in epithelial cells of the mammary gland. Milk lipids are synthesized from fatty acids which bind to specific proteins – FABPs (fatty acid binding proteins). FABPs are a family of small cytoplasmic proteins; nine members of the family have been identified so far (FABP1–FABP9) (Chmurzyńska et al., 2006). Their main roles include fatty acid uptake, transport and metabolism. FABPs can modulate the fatty acid concentration in cells and therefore they affect different cellular processes, especially lipid metabolism. FABP3 and FABP4 are present in tissues with a high demand for fatty acids, such as heart muscle, skeletal muscles, lactating mammary gland, liver or adipose tissue (Roy et al., 2003). FABP3 gene was mapped to bovine chromosome 2 (Calvo et al., 2004), where QTLs affecting milk fat yield and content were described (Khatkar et al., 2004). FABP4 gene was mapped to BTA14 (Michal et al., 2006), which is very rich in QTLs for milk production traits (Khatkar et al., 2004). Fatty acid transport is assisted by the specific proteins called FATPs (fatty acid transport proteins). This protein group includes SLC27A3 (solute carrier family 27, member 3). It belongs to the family of proteins that facilitate long-chain fatty acid transport across the cytoplasmic membrane. Another protein with similar functions is ANXA9 (annexin A9), the member of Ca2+ and phospholipid-binding protein family (Calvo et al., 2006b). Genes encoding SLC27A3 and ANXA9 were mapped to chromosome 3, within the region where QTLs for milk fat content and the other milk traits have been mapped. Both of the above-mentioned genes are expressed in the mammary gland (Calvo et al., 2006b). The polymorphic sites (SNPs – single nucleotide polymorphisms) within the bovine FABP3, FABP4, SLC27A3 and ANXA9 genes were identified (Wu et al., 2005; Calvo et al., 2006b; Michal et al., 2006; Cho et al., 2008). Associations between SNPs in these genes and milk production traits in cattle have not been reported so far. However, polymorphism in the FABP4 gene has been significantly associated with carcass traits in cattle (Michal et al., 2006; Cho et al., 2008). Due to their expression sites, physiological properties and chromosomal localisation, the described genes might be considered as candidate genes for milk production traits. The aim of this study was to determine allele and genotype frequencies and to establish possible associations between the ANXA9, SLC27A3, FABP3 and FABP4 SNPs, and selected milk traits in Jersey cows.

show abstract

Section: Discussionmentioning

confidence: 94%

ANXA9, SLC27A3, FABP3 and FABP4 single nucleotide polymorphisms in relation to milk production traitsin Jersey cows

Kulig¹,

Kowalewska-Łuczak²,

Kmiec³

et al. 2010

CZECH J ANIM SCI

View full text Add to dashboard Cite

show abstract

“…Muir et al (2004) estimated a heritability coefficient of 0.45 for milk yield in the Holstein breed, while Bolignon et al (2005) observed a value of 0.30, and Weber et al (2005) observed a value of 0.22, both also for milk yield in Holstein. Roman et al (2000) observed a heritability coefficient of 0.18 for milk yield in the Jersey breed. In the same paper, these authors presented results from other studies, with estimates varying from 0.25 to 0.38 in the Jersey breed.…”

Section: Productive and Reproductive Data Analysismentioning

confidence: 91%

“…Cobuci et al (2000) estimated values from 0.16 to 0.23 and Peixoto et al (2006) estimated the value of 0.23, both for the heritability coefficients of milk yield in the Guzerat breed. Dong et al (1988), cited by Roman et al (2000), postulated that heritability coefficient estimates are higher with REML algorithms, when the pedigree is more complete. In the present study, the pedigree file was very complete, including animals from various generations before the first production records, and with an excellent genetic connectedness among the recorded animals.…”

Section: Productive and Reproductive Data Analysismentioning

confidence: 99%

Bos indicus or Bos taurus mitochondrial DNA - comparison of productive and reproductive breeding values in a Guzerat dairy herd

Paneto¹,

Ferraz²,

Balieiro³

et al. 2008

Genet. Mol. Res.

View full text Add to dashboard Cite

ABSTRACT. The observation of bovine mitochondrial DNA (mtDNA) polymorphisms allows the separation of American zebu cattle, according to its maternal lineage ancestry, into two groups: one with Bos indicus mtDNA and other with Bos taurus mtDNA. The aim of the present study was to determine the productive and reproductive differences between these two groups, in a Guzerat dairy herd. The genotyping of a sample of 56 animals allowed the categorization of most of the 3835 animals in the pedigree file. The production file included 3528 calving and 3198 lactation records from 729 cows, born during the years 1947 to 2007. The traits considered were: lactation milk yield (LMY); days in milk (DIM); age at first calving (AFC), and calving interval (CI). Heritabilities and breeding values were estimated using an animal model. The regression of the average breeding values per year of birth indicated the genetic trends of the herd. The heritability coefficients estimated for LMY, DIM, AFC, and CI were 0.42, 0.43, 0.20, and 0.10, Bos indicus or Bos taurus mitochondrial DNA -Guzerat respectively. The genetic trends were similar for both groups, pointing to an improvement in the productive and a worsening in the reproductive traits. The two groups differed significantly regarding the average estimated breeding values for LMY, DIM and AFC, in the starting period, until 1970, but no differences were observed in the more recent years, after 1970. The segregation between the groups existed in the starting period, probably because the Bos taurus contributions to the herd had occurred more recently at that moment. The conclusion is that mtDNA has no significant effect on these traits.

show abstract

“…In addition, Jerseys can thrive on locally produced food. They can tolerate high temperatures; heifers mature more quickly than those of other breeds and can be mated at 13 to 15 months; they produce an average herd milk production of 3500 to 5000 kg [2]. …”

Section: Introductionmentioning

confidence: 99%

Estimation of Genetic and Phenotypic Parameters for Production Traits and Somatic Cell Count for Jersey Dairy Cattle in Zimbabwe

Missanjo

Imbayarwo-Chikosi

Halimani

2013

ISRN Veterinary Science

View full text Add to dashboard Cite

Genetic and phenotypic parameters for production traits and somatic cell count (SCC) for Jersey dairy cattle in Zimbabwe were estimated. A total of 10986 lactation records were obtained from Zimbabwe Livestock Identification Trust, with cows calving in the period from 1996 to 2008. An ASReml program fitting an animal model was used for the analyses. Heritability estimates for milk yield, fat yield, protein yield, fat percentage, protein percentage, and Log10SCC were 0.30, 0.32, 0.33, 0.42, 0.44, and 0.08, respectively. The corresponding repeatability estimates were 0.39, 0.38, 0.39, 0.49, 0.51, and 0.16, respectively. The genetic and phenotypic correlations between different production traits ranged from −0.86 to 0.95 and from −0.88 to 0.98, respectively. The genetic and phenotypic correlations between production traits and Log10SCC were weak almost nonsignificantly differentl from zero. The results imply that milk traits for Jersey dairy cattle in Zimbabwe are more heritable. Therefore, these traits may be preferred by breeders as selection criteria for development of effective genetic improvement programme.

show abstract

Estimates of repeatability and heritability of productive and reproductive traits in a herd of Jersey cattle

Cited by 33 publications

References 34 publications

ANXA9, SLC27A3, FABP3 and FABP4 single nucleotide polymorphisms in relation to milk production traitsin Jersey cows

ANXA9, SLC27A3, FABP3 and FABP4 single nucleotide polymorphisms in relation to milk production traitsin Jersey cows

Bos indicus or Bos taurus mitochondrial DNA - comparison of productive and reproductive breeding values in a Guzerat dairy herd

Estimation of Genetic and Phenotypic Parameters for Production Traits and Somatic Cell Count for Jersey Dairy Cattle in Zimbabwe

Contact Info

Product

Resources

About