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 Short communication: Influence of subclinical endometritis on the reproductive performance of dairy cows

2015 ◽  
Vol 13 (4) ◽  
pp. e05SC02 ◽  
Author(s):  
Mónica Barrio ◽  
Marcos Vigo ◽  
Luis A. Quintela ◽  
Juan J. Becerra ◽  
Pedro J. García-Herradón ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Reproductive Performance ◽  
Negative Impact ◽  
Body Condition Score ◽  
Serum Glucose ◽  
Polymorphonuclear Neutrophils ◽  
Albumin Concentration ◽  
Positive Effects ◽  
Condition Score ◽  
Subclinical Endometritis

<p>The aim of this study was to evaluate the influence of subclinical endometritis (SE) on the reproductive performance of dairy cows. Ninety-four dairy cows of parity 1 to 8, distributed in 25 herds, were examined once between 30 and 45 days in milk using transrectal palpation, vaginoscopy and ultrasonography. A cytological sample of the endometrium was taken only from cows with an apparent healthy uterus (n=65). Serum glucose, total cholesterol, triglycerides, non-esterified fatty acids, β-hydroxybutyrate, total proteins, albumin, urea and hepatic enzymes were analyzed. Reproductive indexes were recorded during the next 11 months. Endometrial cytology was considered indicative of SE if percentage of polymorphonuclear neutrophils was superior to 5% of all cells present in the smear, except erythrocytes. Results indicated that 14.9% of the cows sampled for uterine cytology had SE, and that healthy cows become pregnant significantly before than those with SE (hazard ratio=2.35; 95% confidece interval: 1.05-5.3). From all the metabolic and productive variables analyzed, only triglycerides affected negatively to reproduction; serum albumin concentration, body condition score and milk production had positive effects on the reproductive performance. In conclusion, our results indicate that SE has a negative impact on reproductive performance and uterine cytology is necessary to diagnose it since almost 15% of the affected animals were not detected by other diagnosis methods.</p>

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

Relationship between milk somatic cell count and postpartum ovarian cyclicity and fertility in dairy cows

2011 ◽  
Vol 59 (3) ◽  
pp. 349-362 ◽  
Author(s):  
Thinh Nguyen ◽  
Toshihiko Nakao ◽  
Gokarna Gautam ◽  
Long Su ◽  
Ranasinghe Ranasinghe ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Somatic Cell ◽  
Cell Count ◽  
Reproductive Performance ◽  
Somatic Cell Count ◽  
Post Partum ◽  
Dairy Herds ◽  
Ovarian Cyclicity ◽  
Relationship Of ◽  
The Relationship

The main objective of the study was to describe the relationship of high somatic cell count (SCC) with the incidence of abnormal postpartum resumption of ovarian cyclicity and reproductive performance in dairy cows. The factors influencing SCC were also investigated. Four hundred and forty-seven cows from six dairy herds in Japan were monitored for SCC and postpartum resumption of ovarian cyclicity. Cows with high SCC (200,000 to 500,000) had a higher incidence of prolonged luteal phase (P < 0.01) than cows with an SCC of 50,000 to 100,000. The high SCC cows (> 500,000) also showed a higher incidence of delayed first ovulation post partum than cows with an SCC ≤500,000 (P < 0.05) during the first month post partum. Cows with an SCC of 200,000 to 500,000 showed lower conception and pregnancy rates, and more days from calving to conception than cows with an SCC of less than 200,000 (P < 0.05). Cows in parity 5 or more had a higher incidence of high SCC than cows in the first and second parities (P < 0.05). It is concluded that cows with a high SCC have a higher incidence of abnormal postpartum resumption of ovarian cyclicity, leading to reduced reproductive performance.

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