Significance of Milk Protein Genes Polymorphism for Bulgarian Rhodopean Cattle: Comparative Studies

Hristov, Peter; Teofanova, Denitsa; Mehandzhiyski, I.; Zagorchev, Lyuben; Radoslavov, Georgi

doi:10.5504/bbeq.2012.0132

Cited by 9 publications

(6 citation statements)

References 16 publications

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“…According to other publications (Ng-Kwai-Hang et al, 1984;Aleandri et al, 1990) alpha s1 casein BB genotype correlated with higher milk production than those with either AB or BC genotype. Results of Hristov et al (2013) also agree with the dominance of the B allele over the C allele relative to the milk production. On the other hand Havliček (1996) and Micinski et al 2007reported superiority of the heterozygous BC genotype with reference to milk yield.…”

Section: Genotype Effectssupporting

confidence: 66%

Genetic polymorphism of milk protein variants and their association studies with milk yield in Sahiwal cattle

Mir¹,

Ullah²,

Sheikh³

2014

Afr. J. Biotechnol.

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The objective of this study was to determine the allele and genotype frequencies of genetic variants in five milk protein genes and estimate the effect of these variants on milk yield in Sahiwal cattle. Genotypes of five milk protein genes (alpha s1 casein, beta casein, kappa casein, alpha lactalbumin and beta lactoglobulin) were detected using SNaPshot genotyping method. All the five milk protein genes studied exhibited polymorphism with high allele frequencies of 0.51 for alpha s1casein C, 0.93 for beta casein A2, 0.92 for kappa casein A, 0.93 for alpha lactalbumin B and 0.91 for beta lactoglobulin B. Statistically significant differences (p > 0.05) were observed in kappa casein genotypes AA (AA) and AB (AC) that is, genotype AB had more milk yield in 1 st lactation (422 kg) and 2 nd lactation (612 kg), respectively. In conclusion, the AB genotype identified in kappa casein gene is associated with higher milk production therefore incorporation of AB and BB genotypes for kappa casein may help to improve the milk yield in Sahiwal cattle population of Pakistan. To the best of our knowledge, this is the first detailed study involving frequency distribution of genetic variants and their effects on milk yield in Bos indicus Sahiwal cattle of Pakistan.

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Section: Genotype Effectssupporting

confidence: 66%

Genetic polymorphism of milk protein variants and their association studies with milk yield in Sahiwal cattle

Mir¹,

Ullah²,

Sheikh³

2014

Afr. J. Biotechnol.

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“…In the individual studies performed, significant differences among genotypes in terms of fat content, fat yield, protein content, and protein yield were found by a number of authors (Bovenhuis et al, 1992;Cardak, 2005); in contrast, many researchers reported the relationships between the yield traits and CSN1S1 genotypes as not significant (Bovenhuis et al, 1992;Ozdemir and Dogru, 2004;Cardak, 2005;Micinski et al, 2006;Gurcan, 2011;Hristov et al, 2013). Our metaanalysis results indicate that CSN1S1 variants will not provide any advantage in improvement programs for any of the traits examined.…”

Section: Analysis Of Csn1s1 Genotypesmentioning

confidence: 56%

Relationships between milk protein polymorphisms and production traits in cattle: a systematic review and meta-analysis

et al. 2018

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Abstract. Many researchers who have studied the relationships between milk protein polymorphisms and some yield traits in dairy cattle have reported incompatible results. In this study, in order to examine the overall relationships between milk protein genes known as major genes (CSN1S1, CSN2, CSN3, and BLG) and some yield traits (daily milk yield, lactation milk yield, fat yield, fat content, protein yield, and protein content), a meta-analysis was performed using some genetic models reported in the results of previous studies on cattle. The results suggest that the relationships of major milk protein genes with other factors should be studied using the codominant genetic model in general. Relationships among some CSN3 genotypes and fat yield, fat content, and protein content, and relationships between some BLG genotypes and daily milk yield, fat content, protein yield, and protein content were significant (P<0.05). No significant (P>0.05) relationships were found between these genotypes and other milk production traits. In addition, no significant (P>0.05) relationships between the CSN1S1 and CSN2 genotypes with the milk production traits examined were observed.

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“…From this opinion, validation of candidate gene markers for MAS is very important to augment genetic gains in breeding. Owing to it has key biological features, leptin is one of the most considerable candidate gene markers for MAS studies [3,4].…”

Section: Pcr-sscp and Sequencing Analysis For Studying Leptin Gene Pomentioning

confidence: 99%

PCR-SSCP and Sequencing Analysis For Studying Leptin Gene Polymorphism and Its Association with Reproductive Status of Egyptian Buffalo

Eldebaky¹,

M.²,

Attwa

et al. 2020

NIDOC-ASRT

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Significance of Milk Protein Genes Polymorphism for Bulgarian Rhodopean Cattle: Comparative Studies

Cited by 9 publications

References 16 publications

Genetic polymorphism of milk protein variants and their association studies with milk yield in Sahiwal cattle

Genetic polymorphism of milk protein variants and their association studies with milk yield in Sahiwal cattle

Relationships between milk protein polymorphisms and production traits in cattle: a systematic review and meta-analysis

PCR-SSCP and Sequencing Analysis For Studying Leptin Gene Polymorphism and Its Association with Reproductive Status of Egyptian Buffalo

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