scholarly journals Relationships of conformation traits with somatic cell score in Nubian goats

2021 ◽  
Vol 50 ◽  
Author(s):  
César Andrés Ángel-Sahagún ◽  
Sonia Betzabeth Campos-Castillo ◽  
Abner Josué Gutiérrez-Chávez ◽  
Alma Arianna Lechuga-Arana ◽  
José Antonio Hernández-Marín ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Somatic Cell Score

scholarly journals Analyses of the genetic relationships between lactose, somatic cell score, and growth traits in Simmental cattle

animal ◽  
2021 ◽  
pp. 100027
Author(s):  
C. Wei ◽  
H.-P. Luo ◽  
Y.-C. Wang ◽  
X.-X. Huang ◽  
M.-H. Zhang ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Growth Traits ◽  
Genetic Relationships ◽  
Somatic Cell Score ◽  
Simmental Cattle

scholarly journals Feeding a Saccharomyces cerevisiae fermentation product improves udder health and immune response to a Streptococcus uberis mastitis challenge in mid-lactation dairy cows

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
M. Vailati-Riboni ◽  
D. N. Coleman ◽  
V. Lopreiato ◽  
A. Alharthi ◽  
R. E. Bucktrout ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Somatic Cell ◽  
Pathway Analysis ◽  
Molecular Mechanisms ◽  
Somatic Cell Score ◽  
Molecular Networks ◽  
Epithelial Tissue ◽  
Udder Health ◽  
Streptococcus Uberis ◽  
Fermentation Product

Abstract Background We aimed to characterize the protective effects and the molecular mechanisms of action of a Saccharomyces cerevisiae fermentation product (NTK) in response to a mastitis challenge. Eighteen mid-lactation multiparous Holstein cows (n = 9/group) were fed the control diet (CON) or CON supplemented with 19 g/d NTK for 45 d (phase 1, P1) and then infected in the right rear quarter with 2500 CFU of Streptococcus uberis (phase 2, P2). After 36-h, mammary gland and liver biopsies were collected and antibiotic treatment started until the end of P2 (9 d post challenge). Cows were then followed until day 75 (phase 3, P3). Milk yield (MY) and dry matter intake (DMI) were recorded daily. Milk samples for somatic cell score were collected, and rectal and udder temperature, heart and respiration rate were recorded during the challenge period (P2) together with blood samples for metabolite and immune function analyses. Data were analyzed by phase using the PROC MIXED procedure in SAS. Biopsies were used for transcriptomic analysis via RNA-sequencing, followed by pathway analysis. Results DMI and MY were not affected by diet in P1, but an interaction with time was recorded in P2 indicating a better recovery from the challenge in NTK compared with CON. NTK reduced rectal temperature, somatic cell score, and temperature of the infected quarter during the challenge. Transcriptome data supported these findings, as NTK supplementation upregulated mammary genes related to immune cell antibacterial function (e.g., CATHL4, NOS2), epithelial tissue protection (e.g. IL17C), and anti-inflammatory activity (e.g., ATF3, BAG3, IER3, G-CSF, GRO1, ZFAND2A). Pathway analysis indicated upregulation of tumor necrosis factor α, heat shock protein response, and p21 related pathways in the response to mastitis in NTK cows. Other pathways for detoxification and cytoprotection functions along with the tight junction pathway were also upregulated in NTK-fed cows. Conclusions Overall, results highlighted molecular networks involved in the protective effect of NTK prophylactic supplementation on udder health during a subclinical mastitic event.

scholarly journals Genomic prediction of lactation curves for milk, fat, protein, and somatic cell score in Holstein cattle

2019 ◽  
Vol 102 (1) ◽  
pp. 452-463 ◽  
Author(s):  
H.R. Oliveira ◽  
L.F. Brito ◽  
F.F. Silva ◽  
D.A.L. Lourenco ◽  
J. Jamrozik ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Genomic Prediction ◽  
Milk Fat ◽  
Somatic Cell Score ◽  
Holstein Cattle

scholarly journals Economic weights of somatic cell score in dairy sheep

animal ◽  
2007 ◽  
Vol 1 (2) ◽  
pp. 205-212 ◽  
Author(s):  
A. Legarra ◽  
M. Ramón ◽  
E. Ugarte ◽  
M.D. Pérez-Guzmán ◽  
J. Arranz
Keyword(s):  
Somatic Cell ◽  
Somatic Cell Score ◽  
Dairy Sheep ◽  
Economic Weights

scholarly journals The use of dijkstra mechanistic model for genetic analysis of the lactation curve characteristics and their relationships with age at first calving and somatic cell score of Iranian dairy cows

2020 ◽  
Vol 42 ◽  
pp. e50181
Author(s):  
Mahdi Elahi Torshizi ◽  
Homayoun Farhangfar
Keyword(s):  
Somatic Cell ◽  
Genetic Correlation ◽  
Milk Yield ◽  
Mechanistic Model ◽  
Genetic Correlations ◽  
Somatic Cell Score ◽  
Specific Rate ◽  
Lactation Period ◽  
Age At First Calving ◽  
Lactation Curve

The objective of this study was to estimate lactation curve parameters with Dijkstra mechanistic model and to evaluate genetic and phenotypic relationships between the parameters and the average somatic cell count in primiparous cows. The finding indicated that heritability estimates for partial milk yield (PMY1, PMY2 and PMY3), total 305-day milk yield (TMY305), decay parameter (λ2), age at first calving (AFC) and peak yield (PY) were moderate while the heritability of persistency (PS%), average somatic cell score (AVGSCS), time to peak yield (TP), initial milk production (λ0), specific rate of cell proliferation at parturition (λ1), and specific rate of cell death (λ3) were quite low. Genetic correlations between both AFC and PS% traits with average somatic cell scores was negative (-0.047 and -0.060) but low positive genetic correlation were between partial milk yields (PMY1 and PMY3) while negative genetic correlation (-0.06) was obtained between TMY305 and AVGSCS. Differences between TMY305 of cows with less than 100000 cells mL-1 and cows with >1,500,000 cells mL-1 was approximately 708 Kg and is equivalent to 8% loss of milk yield/cow during lactation period and also loss of persistency (11.1 %( was shown for the extreme classes of SCC in this study.

Sign in / Sign up

Export Citation Format

Share Document