Influence of somatic cell count and body condition score on reproductiontraits and milk composition of Czech Holstein cows

2016 ◽  
Author(s):  
Savas Atasever ◽  
Ludek Stádník
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Body Condition ◽  
Somatic Cell Count ◽  
Body Condition Score ◽  
Milk Composition ◽  
Holstein Cows ◽  
Composition Analysis ◽  
Protein Percentage ◽  
Condition Score

The objective of the present study was to investigate the effects of somatic cell count (SCC) and body condition score (BCS) on reproduction and milk composition characteristics in Czech Holstein cows. A total of 275 records of chosen cows was evaluated by milk composition, SCC, BCS and fertility traits. Infrared spectroscopic method was used for SCC test and an automatic device was used for milk composition analysis. Before statistical test, SCC data were transformed to log10 for normality and homogeneity of variances. BCS was performed using a 1-5 point scale and days from calving to first insemination (ICF), number of inseminations per conceptions (NIC) and days open (DO) were assessed as fertility parameters. To evaluate days in milk (DIM) on SCC and BCS, two groups were designed (group 1: cows in 1-69th day DIM and group 2: cows in 70-119th DIM). For testing BCS on chosen traits; cows with 2.50 £ BCS and cows with BCS ³ 2.75 were tested in two groups. All statistical work was applied by SPSS 17.0 at the 0.05 significance level. It was found that SCC elevated with high parities and cows with lower BCS had lower milk protein percentage. Cows with lower BCS had lower reproduction traits than those with higher BCS. Correlation coefficient between two markers was estimated as r= -0.181. Calculated means for the parameters could be assessed in reasonable thresholds. The study revealed that SCC played a marked role on protein percentage of milk, and BCS affected important reproductive characteristics of Czech Holstein cows.

Influence of some environmental factors on body condition score and somatic cell count in Czech Holstein cows

2015 ◽  
Author(s):  
Ludek Stádník ◽  
Savas Atasever
Keyword(s):  
Environmental Factors ◽  
Somatic Cell ◽  
Cell Count ◽  
Body Condition ◽  
Somatic Cell Count ◽  
Body Condition Score ◽  
Holstein Cows ◽  
Factors Affecting ◽  
Condition Score ◽  
Calving Season

The objective of this study was to determine some environmental factors affecting body condition score (BCS) and somatic cell count (SCC) in Czech Holstein cows. A total of 278 primiparous cows were examined by BCS and SCC in four calving seasons, three years and six test days after calving. The results revealed no significant effect of calving season was found for both parameters. While year was not effective on SCC values, BCS mean of third year was significantly (P

scholarly journals The influence of TLR4 gene polymorphisms on milk quality and composition of Lithuanian Holstein cows

2020 ◽  
Vol 70 (2) ◽  
pp. 112-119
Author(s):  
Ramutė Mišeikienė ◽  
Rasa Ugenskienė ◽  
Nijolė Pečiulaitienė ◽  
Renata Bižienė ◽  
Agnietė Švedaitė
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Gene Polymorphisms ◽  
Somatic Cell Count ◽  
Statistical Significance ◽  
Milk Composition ◽  
Dispersion Analysis ◽  
Holstein Cows ◽  
Composition Analysis ◽  
Tlr4 Gene

This study investigated bovine TRL4 gene c.9421C>T, c.2021C>T and c.-10C>T polymorphisms and their relationship with somatic cell count and indicators of milk composition. Blood samples were collected from 152 Lithuanian Holstein dairy cows. The method of polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP) was used to genotype TLR4 gene polymorphisms. The data concerning somatic cell count and milk composition indicators (fat, protein, lactose) were analysed. The influence of genes and statistical significance of differences between different genotypes was evaluated by the one-factor dispersion analysis (ANOVA). Results showed that c.9421C>T was significantly associated with somatic cell count in milk. Also a significant association between the genotypes of c.9421C>T and somatic cell count was found (P<0.05). Cattle with the TT genotype showed the lowest somatic cell count. TLR4 gene polymorphisms c.2021C>T and c.-10C>T have no significant effect on mastitis resistance and milk composition. Analysis of the combined genotypes TC/CC of c.2021C>T and c.9421C>T allowed us to determine the possible association of SNPs with the somatic cell count and lactose content. The study showed a significant association between the somatic cell count (SCC) and TLR4 polymorphism c.9421C>T in Lithuanian Holstein cows. SCS of cows with a TT genotype was significantly lower and indicated the association of TT genotype with resistance to mastitis in c.9421C>T and allele T might be the beneficial allele for mastitis resistance.

scholarly journals Effect of somatic cell count on milk fat and protein in different parities and stages of lactation in Holstein cows

2017 ◽  
Vol 110 (1) ◽  
pp. 37
Author(s):  
Arash CHEGINI ◽  
Navid GHAVI HOSSEIN-ZADEH ◽  
Hossein HOSSEINI-MOGHADAM ◽  
Abdol Ahad SHADPARVAR
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Milk Fat ◽  
Fixed Effects ◽  
Somatic Cell Count ◽  
Repeated Measurements ◽  
Somatic Cell Score ◽  
Holstein Cows ◽  
Dry Period ◽  
Protein Percentage

<p>The objective of this study was to investigate the effect of somatic cell score (SCS) on milk fat and protein in different parities and stages of lactation in Iranian Holstein cows. Records between June 2003 and January 2014 from 208,478 cows in lactations one to nine in 845 herds, comprising 2,456,303 monthly test-day (TD) records were used. The MIXED procedure of the SAS software with repeated measurements was used. The fixed effects of the model were herd, year-season of calving, month of TD, weeks of lactation, previous dry period length and somatic cell score (SCS) and covariate was calving age. Lactations were divided into six stages and analyses were performed within each stage. Also, different lactations were analyzed separately. Increase of SCS led to increase of milk fat and protein percentage and the increase of milk fat and protein associated with SCS was higher in early stages of lactation relative to later stages of lactation. Also, increase of milk fat and protein associated with SCS was higher in the first lactation rather than later lactations and decreased with increase of parity.</p>

scholarly journals The effects of somatic cell count on milk yield and milk composition in Holstein cows

2019 ◽  
Vol 89 (2) ◽  
pp. 143-154 ◽  
Author(s):  
Ertuğrul Kul ◽  
◽  
Aziz Şahin ◽  
Savaş Atasever ◽  
Emre Uğurlutepe ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Milk Composition ◽  
Holstein Cows

scholarly journals A Connection Between Mastitis During Early Lactation and Reproductive Performance of Dairy Cows – A Review / Związek mastitis we wczesnej laktacji z użytkowością reprodukcyjną krów mlecznych – artykuł przeglądowy

2013 ◽  
Vol 13 (3) ◽  
pp. 435-448
Author(s):  
Jan Olechnowicz ◽  
Jędrzej M. Jaśkowski
Keyword(s):  
Dairy Cows ◽  
Somatic Cell ◽  
Cell Count ◽  
Reproductive Performance ◽  
Somatic Cell Count ◽  
Negative Impact ◽  
Body Condition Score ◽  
Condition Score ◽  
Fertility Traits ◽  
Genetic Standard Deviation

Abstract The objective of this study was to present a relationship between mastitis in the post-calving period and fertility traits of dairy cows. The threshold of 200,000 cells/ml for somatic cell count is used as a reference for healthy quarters of the cow’s udder. The genetic correlation between mastitis and somatic cell count is strong (from 0.7 to 0.8). Although heritability for fertility traits is low (from 0.01 to 0.02), the genetic standard deviation for mastitis varies from 1.2 to 7.0 percentage units, suggesting that genetic gain can be achieved by selecting for mastitis. Results of this study suggest that mastitis in the postpartum period can have a markedly negative impact on the reproductive performance of dairy cows. The synergistic effect of common conditions (somatic cell count, body condition score and lameness score) or other factors (e.g. heat stress, fertility management, the presence of repeat breeders) also lowers fertility of cows. Production of milk with fewer than 100,000 cells/ml leads to improved health and fertility in the cows.

scholarly journals Effect of premilking teat sanitation on milk composition, somatic cell count and test day milk yield in Holstein cows

2017 ◽  
Author(s):  
Edit Mikóné Jónás ◽  
Savas Atasever ◽  
Erika Havranek
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Genetic Factors ◽  
Milk Composition ◽  
Holstein Cows ◽  
High Quality ◽  
Disinfectant Solution ◽  
Positive Correlations

The objective of the present study was to determine the efficacy of premilking teat sanitation applications on milk composition, somatic cell count (SCC) and test day milk yield (TDMY) in Holstein cows. The research was conducted in two private farms located in Hódmezõvásárhely, South- Hungary. In the first trial, only water and drying application (WD) was practiced to 791 cows and in the second trial, disinfectant solution and drying application (DD) was performed to 1418 cows. Fat (F), protein (P) and lactose (L) were tested as the milk parameters and SCC and TDMY records were also evaluated. To investigate the effects of non-genetic factors on the parameters, four parity and three days in milk groups were designed. L, SCC and TDMY were affected by parity in both applications, and P affected by DD (P less than 0.01). All traits were affected by DIM in both applications (P less than 0.05 or P less than 0.01). While positive correlations were estimated between F and P; F and SCC; P and SCC; L and TDMY; the negative correlations were determined between F and L; F and TDMY; P and L; P and TDMY; L and SCC; SCC and TDMY. The means of F, P and SCC were higher in DD, but L and TDMY were higher in WD (P less than 0.05). The study revealed that cleaning the udder using plenty of water and drying the teats with clean clothes are suggested to dairy owners as a preferential premilking application to obtain high quality milk

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