The association between antibody titres againstCampylobacter fetus and reproductive efficiency in dairy cattle

1993 ◽  
Vol 17 (2) ◽  
pp. 95-107 ◽  
Author(s):  
S. Akhtar ◽  
H. P. Riemann ◽  
M. C. Thurmond ◽  
C. E. Franti
Keyword(s):  
Dairy Cattle ◽  
Reproductive Efficiency ◽  
Antibody Titres

scholarly journals Non-specific Bacterial Profiles in Reproductive Tract of Dairy Cattle during Artificial Insemination

2021 ◽  
Vol 11 (1) ◽  
pp. 110-114
Author(s):  
Astin Islam Andriani ◽  
Sri Pantja Madyawati ◽  
Emy Koestanti Sabdoningrum
Keyword(s):  
Dairy Cattle ◽  
Bacterial Infection ◽  
Artificial Insemination ◽  
Reproductive Tract ◽  
The Other ◽  
Reproductive Efficiency ◽  
Reproductive Disorders ◽  
Bacterial Isolation ◽  
Isolation And Identification ◽  
Other Hand

One of the causes of low reproductive efficiency in dairy cattle is the presence of reproductive disorders caused by a non-specific bacterial infection. The aim of the present study was to isolate and identify the genus of non-specific bacteria in the reproductive tract of dairy cattle during artificial insemination. A total of 10 samples in the form of mucus attached to the plastic sheath used after artificial insemination in dairy cattle were collected in the study. The samples were subjected to bacterial isolation and identification. The obtained results of the study indicated that Staphylococcus was the dominant genus found (90%). On the other hand, other genera were Escherichia (60%) and Corynebacterium (20%).

Effect of first 60-day cumulative milk yield on days open in Holstein dairy cows in Iran

2007 ◽  
Vol 2007 ◽  
pp. 148-148
Author(s):  
A. Heravi Moussavi ◽  
M. Danesh Mesgaran ◽  
T. Vafa
Keyword(s):  
Dairy Cattle ◽  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Dairy Farm ◽  
Reproductive Efficiency ◽  
Root Cause ◽  
Principal Factors ◽  
Days Open ◽  
Holstein Dairy Cows

Reproduction and milk production are the principal factors that are influencing dairy farm profitability. The dairy industry in Iran has changed dramatically in the last decade. The shift toward more productive cows and larger herds in Iran is associated with a decrease reproductive efficiency (Heravi Moussavi et al., 2004). Increased knowledge about the principal causes of reduced fertility is essential. The root cause of the declining fertility is probably a combination of a variety of physiological and management factors that have an additive effect on reproductive efficiency. Dairy cattle are inseminated and pregnancy is established while dairy cows are lactating. Based on the analyses of large datasets, there is clearly an antagonistic relationship between milk production and reproduction in dairy cattle (Lucy, 2001). It was shown that the hazard ratio for cumulative first 60-day milk yield and conception in high producer cows was 8 percent less than the others and also high milk yield was a risk factor for several reproductive disorders (Grohn and Rajala-Schultz, 2000). The objective of this study was to evaluate the effect of first 60-day cumulative milk yield on days open in Iranian Holstein dairy cows.

scholarly journals Reproductive Efficiency of Purebred and Crossbred Dairy Cattle

1974 ◽  
Vol 57 (2) ◽  
pp. 220-234 ◽  
Author(s):  
R.E. McDowell ◽  
J.A. Velasco ◽  
L.D. VanVleck ◽  
J.C. Johnson ◽  
G.W. Brandt ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Reproductive Efficiency ◽  
Crossbred Dairy Cattle

Effects of heat stress on reproductive efficiency in Holstein dairy cattle in the North African arid region

2020 ◽  
Vol 55 (9) ◽  
pp. 1250-1257
Author(s):  
Hanane Djelailia ◽  
Rachid Bouraoui ◽  
Bayrem Jemmali ◽  
Taha Najar
Keyword(s):  
Heat Stress ◽  
Dairy Cattle ◽  
Arid Region ◽  
Reproductive Efficiency ◽  
North African ◽  
The North
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