ANALYSIS OF THE RELATIONSHIP BETWEEN SOMATIC CELL COUNT AND FERTILITY IN HOLSTEIN-FRIESIAN COWS
Journal Title: Acta Scientiarum Polonorum Zootechnica - Year 2017, Vol 16, Issue 4
Abstract
Somatic cell counts (SCC) in milk from test-day records obtained until 30 days before the first service were analyzed in relation to service efficacy, calving interval (CI), days open (DO) and services per conception rate (S/C). Statistical analysis (GLM, FREQ, CORR of the SAS package) involved 28,078 test-day records from 17,618 HF cows, which calved between 2011–2014. Significant (P ≤ 0.001) correlations were found between SCC and the fertility indices. First service successful conception was found to decrease by approx. 6% with an increase in SCC in milk. Increased SCC was accompanied by an extended calving interval (by 3 days) and days open (by 6 days), as well as by an increased S/C rate, from 1.99 in cows with SCC <100,000 cells ∙ ml–1 to 2.03 in cows with SCC >1,000,000 cells ∙ ml–1. This relationship was confirmed by positive coefficients of correlation between SCC vs. CI, DO and S/C. Dairy cattle producers should monitor SCC in milk, also because its possible increase may have a detrimental effect on the overall fertility of the herd.
Authors and Affiliations
Weronika Kulpa, Anna Sawa, Małgorzata Jankowska
Keywords
Related Articles
- EP ID EP380536
- DOI 10.21005/asp.2017.16.4.05
- Views 99
- Downloads 0
CLASSIFICATION OF CALVING DIFFICULTY SCORES USING DIFFERENT TYPES OF DECISION TREES
The aim of this study was to classify the cases of calving difficulty using selected data mining methods [Classification and Regression Trees (CART), Chi-square Automatic Interaction Detector (CHAID) and Quick, Unbiased,...
Characterization of table eggs-producing organic farms in Lublin Voivodeship
The aim of this study was to analyze organic farms involved in the production of table eggs in the Lublin Voivodeship. The survey was performed by the use of a questionnaire in 5 farms located in the counties of Łęczna,...
Fatty acids profile and health lipid indices in the longissimus lumborum muscle of different beef cattle breeds reared under intensive production systems
The aim of this study was the comparison of the fatty acids profile and health lipid indices of the longissimus lumborum muscle from 86 bulls of the Charolais (CH), Limousin (LM), Simmental (SM), Salers (SL), Hereford (H...
Progesterone profile in the sexual cycle of female American mink (Neovison vison)
The aim of this study was to analyze the blood serum levels of progesterone in American mink females in the course of the annual sexual cycle. In order to determine the concentration profile of progesterone in year-old f...
THE EFFECT OF ANIMAL-ASSISTED ACTIVITIES (AAA) INVOLVING A DOG ON PRE-SCHOOL CHILDREN IN THE LIGHT OF THEIR PARENTS’ OPINIONS
The aim of this study was to evaluate the effect of activities with dogs (AAA) on pre-school children in the light of their parents’ opinions. The study was performed based on a questionnaire addressed to the parents of...