scholarly journals Influence of non-genetic factors on growth traits of Horro (Zebu) and their crosses with Holstein Friesian and Jersey cattle

2012 ◽  
Vol 3 (7) ◽  
pp. 72-77
Author(s):  
Abera Habtamu ◽  
Abegaz Solomon ◽  
Mekasha Yoseph
Keyword(s):  
Genetic Factors ◽  
Growth Traits ◽  
Jersey Cattle ◽  
Holstein Friesian

scholarly journals Growth traits of crossbreds of Ankole with Brown Swiss, Holstein Friesian, Jersey, and Sahiwal cattle in Rwanda

2017 ◽  
Vol 50 (4) ◽  
pp. 825-830 ◽  
Author(s):  
Maximillian Manzi ◽  
Lotta Rydhmer ◽  
Martin Ntawubizi ◽  
Callixte Karege ◽  
Erling Strandberg
Keyword(s):  
Growth Traits ◽  
Brown Swiss ◽  
Holstein Friesian ◽  
Sahiwal Cattle

scholarly journals Effect of non-genetic factors on persistency of milk yield in jersey cattle

2014 ◽  
Vol 5 (1and2) ◽  
pp. 1-4 ◽  
Author(s):  
M.N. PATOND ◽  
B.B. KHUTAL ◽  
S.T. PACHPUTE ◽  
S.S. RAMOD
Keyword(s):  
Milk Yield ◽  
Genetic Factors ◽  
Jersey Cattle

scholarly journals Heritability of Teat Condition in Italian Holstein Friesian and Its Relationship with Milk Production and Somatic Cell Score

Animals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2271
Author(s):  
Francesco Tiezzi ◽  
Antonio Marco Maisano ◽  
Stefania Chessa ◽  
Mario Luini ◽  
Stefano Biffani
Keyword(s):  
Dairy Cattle ◽  
Somatic Cell ◽  
Milk Yield ◽  
Genetic Factors ◽  
Genetic Correlations ◽  
Somatic Cell Score ◽  
Cattle Industry ◽  
Holstein Friesian ◽  
Selection For ◽  
Current Selection

In spite of the impressive advancements observed on both management and genetic factors, udder health still represents one of most demanding objectives to be attained in the dairy cattle industry. Udder morphology and especially teat condition might represent the first physical barrier to pathogens’ access. The objectives of this study were to investigate the genetic component of teat condition and to elucidate its relationship with both milk yield and somatic cell scores in dairy cattle. Moreover, the effect of selection for both milk yield and somatic cell scores on teat condition was also investigated. A multivariate analysis was conducted on 10,776 teat score records and 30,160 production records from 2469 Italian Holstein cows. Three teat scoring traits were defined and included in the analysis. Heritability estimates for the teat score traits were moderate to low, ranging from 0.084 to 0.238. When teat score was based on a four-classes ordinal scoring, its genetic correlation with milk yields and somatic cell score were 0.862 and 0.439, respectively. The scale used to classify teat-end score has an impact on the magnitude of the estimates. Genetic correlations suggest that selection for milk yield could deteriorate teat health, unless more emphasis is given to somatic cell scores. Considering that both at national and international level, the current selection objectives are giving more emphasis to health traits, a further genetic deterioration in teat condition is not expected.

scholarly journals Effect of Some Non-Genetic Factors on 305-day Milk Yield and Lactation Persistency in Holstein Friesian Cows

2021 ◽  
Vol 40 (2) ◽  
pp. 189-194
Author(s):  
Zienab Abo-Gamil ◽  
Hadeel El-Qaliouby ◽  
Eman Manaa ◽  
Sherif Ramadan
Keyword(s):  
Milk Yield ◽  
Genetic Factors ◽  
Holstein Friesian ◽  
Friesian Cows

scholarly journals GWAS on longitudinal growth traits reveals different genetic factors influencing infant, child, and adult BMI

2019 ◽  
Vol 5 (9) ◽  
pp. eaaw3095 ◽  
Author(s):  
Alexessander Couto Alves ◽  
N. Maneka G. De Silva ◽  
Ville Karhunen ◽  
Ulla Sovio ◽  
Shikta Das ◽  
...  
Keyword(s):  
Genetic Factors ◽  
Developmental Stages ◽  
Growth Traits ◽  
Association Studies ◽  
Child Growth ◽  
Growth Patterns ◽  
Longitudinal Growth ◽  
Genome Wide Association Studies ◽  
Adult Health ◽  
Control Infant

Early childhood growth patterns are associated with adult health, yet the genetic factors and the developmental stages involved are not fully understood. Here, we combine genome-wide association studies with modeling of longitudinal growth traits to study the genetics of infant and child growth, followed by functional, pathway, genetic correlation, risk score, and colocalization analyses to determine how developmental timings, molecular pathways, and genetic determinants of these traits overlap with those of adult health. We found a robust overlap between the genetics of child and adult body mass index (BMI), with variants associated with adult BMI acting as early as 4 to 6 years old. However, we demonstrated a completely distinct genetic makeup for peak BMI during infancy, influenced by variation at the LEPR/LEPROT locus. These findings suggest that different genetic factors control infant and child BMI. In light of the obesity epidemic, these findings are important to inform the timing and targets of prevention strategies.

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