scholarly journals Seroprevalence of infectious bovine rhinotracheitis and brucellosis and their effect on reproductive performance of dairy cattle

2021 ◽  
Vol 13 (2) ◽  
pp. 106-113
Author(s):  
Muleta Tadeg Wedajo ◽  
Lemma Alemayehu ◽  
Yilma Tefera ◽  
Asgedom Hagos ◽  
Amare Reda Abadi
Keyword(s):  
Dairy Cattle ◽  
Reproductive Performance ◽  
Infectious Bovine Rhinotracheitis

Liver fatty acid metabolism associations with reproductive performance of dairy cattle

2019 ◽  
Vol 208 ◽  
pp. 106104 ◽  
Author(s):  
Emmanuel Angeli ◽  
Fernanda Mariel Rodríguez ◽  
Florencia Rey ◽  
Gonzalo Santiago ◽  
Valentina Matiller ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Dairy Cattle ◽  
Fatty Acid Metabolism ◽  
Reproductive Performance ◽  
Acid Metabolism ◽  
Liver Fatty Acid

scholarly journals A stochastic model for the simulation of management decisions in dairy herds, with special reference to reproductive performance.

1985 ◽  
Vol 33 (1) ◽  
pp. 59-61
Author(s):  
A.A. Dijkhuizen ◽  
S. Hibma ◽  
J.A. Renkema
Keyword(s):  
Adverse Effects ◽  
Dairy Cattle ◽  
Stochastic Model ◽  
Special Reference ◽  
Reproductive Performance ◽  
Dairy Herds ◽  
Calving Interval ◽  
Management Decisions

A 15 year simulation was carried out in order to test a model for dairy cattle culling. Provisional results indicate that decreasing max. allowed calving interval from 520 to 360 days decreases herd income due to adverse effects on herd life. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Milk Production Change Following Clinical Mastitis and Reproductive Performance Compared Among J5 Vaccinated and Control Dairy Cattle

2008 ◽  
Vol 91 (10) ◽  
pp. 3869-3879 ◽  
Author(s):  
D.J. Wilson ◽  
Y.T. Grohn ◽  
G.J. Bennett ◽  
R.N. González ◽  
Y.H. Schukken ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Milk Production ◽  
Reproductive Performance ◽  
Clinical Mastitis ◽  
And Control ◽  
Production Change

scholarly journals Effect of high somatic cell counts on reproductive performance of Chilean dairy cattle

2009 ◽  
Vol 92 (4) ◽  
pp. 1575-1580 ◽  
Author(s):  
P.J. Pinedo ◽  
P. Melendez ◽  
J.A. Villagomez-Cortes ◽  
C.A. Risco
Keyword(s):  
Dairy Cattle ◽  
Somatic Cell ◽  
Reproductive Performance ◽  
Somatic Cell Counts ◽  
Cell Counts

scholarly journals Records of performance and sanitary status from a dairy cattle herd in southern Brazil

2011 ◽  
Vol 31 (1) ◽  
pp. 01-09 ◽  
Author(s):  
Cláudio E. F. Cruz ◽  
Djeison L. Raymundo ◽  
Cristine Cerva ◽  
Saulo P. Pavarini ◽  
André G. C. Dalto ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Reproductive Performance ◽  
Cattle Herd ◽  
Lactation Period ◽  
Mean Values ◽  
Cattle Diseases ◽  
Dairy Cattle Herd ◽  
The Mean ◽  
The Impact ◽  
Voluntary Waiting Period

Over the last decades, the emphasis on the health of dairy cows has changed from an individual to a herd level. In this scenario, the role played by the recording system and its interpretation by veterinarians has gained primordial importance. The records of productive and reproductive performance and of sanitary status from a southern Brazilian dairy cattle herd have been presented and discussed. The period of study was 2000-2009. Mean values per lactation period were 349D 8436M 290F 275P 201SCS (D: days in lactation, M: kg of milk yield, F: kg of fat, P: kg of protein and SCS: somatic cell score in 1000 cells/ml of milk). Major indexes of reproductive efficiency included age at first calving (31 months), services per conception (2.1), intercalving interval (428 days), calving to conception interval (146 days), mean annual rates of parturitions (76.2%), fetal losses (9.8-19.0%), and stillbirths (3.6%), apart of voluntary waiting period (94 days). Main information on sanitary status of the herd was associated with the mean prevalence of common disorders of dairy cattle such as anaplasmosis (29.8%), mastitis (27.8%), digital diseases (26.3%), ovarian cysts (21.3%), placental retention (19.7%), postpartum uterine infections (10.6%), and calf diarrhea (23.7%) and pneumonia (16.8%), among others. In addition, culling reasons (low reproductive performance [56.3%] and udder/mastitis problems [33.6%]), causes of cattle deaths (anaplasmosis [16.4%] and leukosis [11.4]), and the impact of cattle diseases such as tuberculosis, leukosis, and neosporosis on the herd have also been presented and succinctly discussed. Numbers between brackets represent rates accumulated in the 10-year period.

Effects of genotype and feeding system on the reproductive performance of dairy cattle

1996 ◽  
Vol 46 (1) ◽  
pp. 33-40 ◽  
Author(s):  
M.R. McGowan ◽  
R.F. Veerkamp ◽  
L. Anderson
Keyword(s):  
Dairy Cattle ◽  
Reproductive Performance ◽  
Feeding System
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