Short communication: A comparison between purebred Holstein and Brown Swiss × Holstein cows for milk production, somatic cell score, milking speed, and udder measurements in the first 3 lactations

The objective of the present work was to evaluate the effect of somatic cell score on the longevity of Holstein cows raised all over Brazil, using a piecewise Weibull proportional-hazard model. The following two longevity traits were defined: true longevity, number of days from first calving to culling; and functional longevity, approximated by correcting true longevity to within-herd-year production. Records on productive life of 131330 cows were used. The model included the time-independent effect of age at first calving. The other effects were time-dependent, and included the following: region by year of calving, variation in herd-size class, milk-production class by year of calving within herd, within-herd milk-production class by number of lactations, within-herd fat content, within-herd protein content, and somatic cell score (SCS). The overall mean of the somatic cell counts (SCC) was 322000 cells/mL. The highest SCC mean was found between 130 to 290 days of lactation. The SCC mean decreased over the years. Cows from Region 5 (Rio Grande do Sul) showed higher SCC means. The risk of culling was slightly higher for functional longevity than for true longevity. The impact of longevity was high in cows from first to fourth lactation with a high SCS, with the risk of culling varying from 0.90 (true longevity: second lactation and Class 2) to 1.2 (functional longevity: fourth lactation and Class 5). Cows at the fifth lactation with a lower SCS had a higher risk of culling (1.4). Including the effect of SCS class by stage of lactation in the models was not beneficial. The decrease in SCS, especially from the first to fourth lactation, can be used for indirect selection to improve the longevity of Holstein cows in Brazil.

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Polymorphisms of the ACSL1 Gene Influence Milk Production Traits and Somatic Cell Score in Chinese Holstein Cows

Animals ◽

10.3390/ani10122282 ◽

2020 ◽

Vol 10 (12) ◽

pp. 2282

Author(s):

Yan Liang ◽

Qisong Gao ◽

Qiang Zhang ◽

Abdelaziz Adam Idriss Arbab ◽

Mingxun Li ◽

...

Keyword(s):

Somatic Cell ◽

Milk Production ◽

Somatic Cell Score ◽

Holstein Cows ◽

Production Traits ◽

Milk Production Traits ◽

Chinese Holstein ◽

Chain Acyl ◽

Chinese Holstein Cows ◽

Long Chain

Improving the quality of milk is a challenge for zootechnicians and dairy farms across the globe. Long-chain acyl-CoA synthetase 1 (ACSL1) is a significant member of the long-chain acyl-CoA synthetase gene family. It is widely found in various organisms and influences the lactation performance of cows, including fat percentage, milk protein percentage etc. Our study was aimed to investigate the genetic effects of single nucleotide polymorphisms (SNPs) in ACSL1 on milk production traits. Twenty Chinese Holstein cows were randomly selected to extract DNA from their blood samples for PCR amplification and sequencing to identify SNPs of the bovine ACSL1 gene, and six SNPs (5’UTR-g.20523C>G, g.35446C>T, g.35651G>A, g.35827C>T, g.35941G>A and g.51472C>T) were discovered. Then, Holstein cow genotyping (n = 992) was performed by Sequenom MassARRAY based on former SNP information. Associations between SNPs and milk production traits and somatic cell score (SCS) were analyzed by the least-squares method. The results showed that SNP g.35827C>T was in high linkage disequilibrium with g.35941G>A. Significant associations were found between SNPs and test-day milk yield (TDMY), fat content (FC), protein content (PC) and SCS (p < 0.05). Among these SNPs, SNP 5’UTR-g.20523C>G showed an extremely significant effect on PC and SCS (p < 0.01). The SNP g.35446C>T showed a statistically significant effect on FC, PC, and SCS (p < 0.01), and also TDMY (p < 0.05). The SNP g.35651G>A had a statistically significant effect on PC (p < 0.01). The SNP g.35827C>T showed a highly significant effect on TDMY, FC, and SCS (p < 0.01) and significantly influenced PC (p < 0.05). Lastly, SNP g.51472C>T was significantly associated with TDMY, FC, and SCS (p < 0.05). In summary, the pleiotropic effects of bovine ACSL1 for milk production traits were found in this paper, but further investigation will be required on the intrinsic correlation to provide a theoretical basis for the research on molecular genetics of milk quality traits of Holstein cows.

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Comparison of milk production, mastitis, lameness and days to conception of Brown Swiss, Holstein and Holstein cross Brown Swiss dairy cattle

Proceedings of the British Society of Animal Science ◽

10.1017/s1752756200017634 ◽

2006 ◽

Vol 2006 ◽

pp. 86-86

Author(s):

G Wellwood ◽

J K Margerison

Keyword(s):

Dairy Cattle ◽

Somatic Cell ◽

Milk Production ◽

Milk Yield ◽

Complex Disease ◽

Economic Loss ◽

Brown Swiss ◽

Somatic Cell Counts ◽

Cell Counts ◽

Holstein Friesian

Mastitis is a complex disease causing inflammation of the udder, which has been estimated to cost the dairy farmer between £40-£117/cow per year (Stott et al., 2002). Economic loss occurs as a result of discarded milk, reduced milk yield and milk quality, increased vet costs and an increase in replacement costs. The objective of this study was to examine the effect of breed on the incidence of mastitis and somatic cell counts and milk production capabilities of Holstein Friesian, Brown Swiss and Brown Swiss crossbred cows.

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Effects of the inclusion of açai oil in diet of prepartum Holstein cows on milk production, somatic cell counts and future lactation

Anais da Academia Brasileira de Ciências ◽

10.1590/0001-3765202020200149 ◽

2020 ◽

Vol 92 (4) ◽

Author(s):

DAIANE S. DOS SANTOS ◽

VANDERLEI KLAUCK ◽

CARINE F. SOUZA ◽

MATHEUS D. BALDISSERA ◽

CLEITON THEISEN ◽

...

Keyword(s):

Somatic Cell ◽

Milk Production ◽

Holstein Cows ◽

Somatic Cell Counts ◽

Cell Counts

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Milk, Fat, Protein, Somatic Cell Score, and Days Open Among Holstein, Brown Swiss, and Their Crosses

Journal of Dairy Science ◽

10.3168/jds.2006-889 ◽

2007 ◽

Vol 90 (7) ◽

pp. 3542-3549 ◽

Cited By ~ 43

Author(s):

C.D. Dechow ◽

G.W. Rogers ◽

J.B. Cooper ◽

M.I. Phelps ◽

A.L. Mosholder

Keyword(s):

Somatic Cell ◽

Milk Fat ◽

Somatic Cell Score ◽

Brown Swiss ◽

Days Open

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167 Genetic and genomic estimation for somatic cell score in relation with milk production traits of Russian Holstein dairy cattle

Journal of Animal Science ◽

10.2527/asasann.2017.167 ◽

2017 ◽

Vol 95 (suppl_4) ◽

pp. 82-83 ◽

Cited By ~ 1

Author(s):

A. A. Sermyagin ◽

E. A. Gladyr' ◽

A. A. Kharzhau ◽

K. V. Plemyashov ◽

E. N. Tyurenkova ◽

...

Keyword(s):

Dairy Cattle ◽

Somatic Cell ◽

Milk Production ◽

Somatic Cell Score ◽

Production Traits ◽

Milk Production Traits

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Genetic relationship of conformation traits with average somatic cell score at 150 and 305 days in milk in Holstein cows of Iran

Journal of Dairy Science ◽

10.3168/jds.2011-5002 ◽

2012 ◽

Vol 95 (12) ◽

pp. 7340-7345 ◽

Cited By ~ 5

Author(s):

M. Dadpasand ◽

M.J. Zamiri ◽

H. Atashi ◽

A. Akhlaghi

Keyword(s):

Somatic Cell ◽

Genetic Relationship ◽

Somatic Cell Score ◽

Holstein Cows ◽

Relationship Of

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L-selectin gene polymorphism and its association with clinical mastitis, somatic cell score, and milk production in Polish Holstein-Friesian cattle

Czech Journal of Animal Science ◽

10.17221/96/2017-cjas ◽

2018 ◽

Vol 63 (No. 7) ◽

pp. 256-262 ◽

Cited By ~ 2

Author(s):

M. Dusza ◽

J. Pokorska ◽

J. Makulska ◽

D. Kulaj ◽

M. Cupial

Keyword(s):

Somatic Cell ◽

Milk Production ◽

Milk Fat ◽

Bacterial Infections ◽

Clinical Mastitis ◽

Somatic Cell Score ◽

Production Traits ◽

Milk Production Traits ◽

Holstein Friesian ◽

Friesian Cows

Bovine mastitis is a widespread disease of the mammary gland, highly contributing to the increase in veterinary costs in dairy industry. In the present study, the genetic polymorphism within bovine L-selectin gene was analysed and its impact on clinical mastitis occurrence, somatic cell score (SCS), and milk production traits in Polish Holstein-Friesian cows was examined. Polymorphism within L-selectin gene, molecule responsible for neutrophil attachment to endothelium, might have a potential role in immune response to bacterial infections and udder health. Two hundred and six Polish Holstein-Friesian cows were genotyped by polymerase chain reaction-restriction fragment length polymorphism method. Two single nucleotide polymorphisms mutations within the coding sequence of L-selectin gene were identified (c.165G>A and c.567C>T). The effect of c.165G>A and c.567C>T mutations on SCS was highly significant (P = 0.0019 and P = 0.0003, respectively). Strong associations (P ≤ 0.0001) were also observed between L-selectin polymorphism and milk production traits (milk yield, milk fat percentage, and milk protein percentage). However, the polymorphism in the analysed gene had no influence on the resistance or susceptibility of cows to clinical mastitis (only the tendency toward significance, P = 0.06 for c.567C>T mutation was found). Potential exploitation of the information on the identified associations in genetic selection needs to confirm the obtained results in further investigations.

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