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AbstractFull Text

Male calves from the high value parents, bull fathers and bull dams, enter the selection for artificial insemination. After laboratory tests, the calves are taken to the center for artificial insemination, and after a stay in quarantine the are moved to a test station. At the age of twelve months...

Author(s)
Prka, I.; Ðorđević, B.
Publisher
Veterinarska Komora Srbije (Veterinary Chamber of Serbia), Beograd, Serbia
Citation
Veterinarski Glasnik, 2014, 68, 5/6, pp 311-322
Abstract

Pregnancy per insemination is a major determinant of reproductive efficiency in cattle and is affected by concentrations of progesterone (P4) during early pregnancy. The relationship between pregnancy per artificial insemination (P/AI) and early luteal concentrations of P4, and repeatability of...

Author(s)
Parr, M. H.; Mullen, M. P.; Crowe, M. A.; Roche, J. F.; Lonergan, P.; Evans, A. C. O.; Diskin, M. G.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2012, 95, 5, pp 2390-2396
Abstract

In the present study, the effects of long and short acting GnRH analogues in Select-synch protocol on pregnancy rates in Holstein cows were investigated. Forty cows were used and divided into two groups randomly (n=20). In the first and second groups, animals received lecirelin acetate and...

Author(s)
İpek, F.; Demİral, Ö. O.; Abay, M.
Publisher
Erciyes University, Faculty of Veterinary Medicine, Kayseri, Turkey
Citation
Erciyes Üniversitesi Veteriner Fakültesi Dergisi, 2014, 11, 3, pp 183-190
Abstract

This article discusses the breeding programmes implemented by German breeder's association highlighting its international standards, production of quality Holstein Bulls using genomics based selection, and available AI centres in Germany. Recommendations to helped reduced costs of breeding dairy...

Author(s)
Brade, W.
Publisher
DLG AgroFood medien gmbh, Bonn, Germany
Citation
Milchpraxis, 2014, 52, 2, pp 46-49
Abstract

The objective of this study was to clarify the effects of a second protocol of ovulation synchronisation starting on day 26 after timed artificial insemination on ovarian profile and days open in dairy cows diagnosed as nonpregnant. Ninety-four Holstein-Friesian cows received intramuscular...

Author(s)
Osawa, T.; Honjou, S.; Nitta, H.; Uchiza, M.; Tameoka, N.; Moro, Y.; Izaike, Y.
Publisher
Society for Reproduction and Development (, Tokyo, Japan
Citation
Journal of Reproduction and Development, 2009, 55, 2, pp 163-169
Abstract

Data on about 3999 records from 1990 to 2003 collected at artificial insemination center Mirpur city were utilized for this study and analyzed using Harvey's Mixed Model Least Squares and Maximum Likelihood Computer Program to study the environmental sources of variation on some performance traits...

Author(s)
Qureshi, M. A.; Khalid Javed; Jarral, Z. A.; Khan, S. A.
Publisher
University of Agriculture, Department of Livestock Management, Faisalabad, Pakistan
Citation
Pakistan Journal of Agricultural Sciences, 2008, 45, 2, pp 362-371
Abstract

Growth hormone, produced in the anterior pituitary gland, stimulates the release of insulin-like growth factor-I from the liver and is of critical importance in the control of nutrient utilization and partitioning for lactogenesis, fertility, growth, and development in cattle. The aim of this study ...

Author(s)
Mullen, M. P.; Berry, D. P.; Howard, D. J.; Diskin, M. G.; Lynch, C. O.; Berkowicz, E. W.; Magee, D. A.; MacHugh, D. E.; Waters, S. M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2010, 93, 12, pp 5959-5969
Abstract

Previous studies have shown that the use of beef bull semen significantly reduces the rate of abortions due to Neospora caninum in artificially inseminated (AI) seropositive dairy cows. In addition, certain beef breeds could be more resistant to N. caninum infection and abortion than others. The...

Author(s)
Almería, S.; López-Gatius, F.; García-Ispierto, I.; Nogareda, C.; Bech-Sàbat, G.; Serrano, B.; Santolaria, P.; Yániz, J. L.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2009, 163, 4, pp 323-329
Abstract

Blood-typed Holstein-Friesian bulls which had predicted differences (PD) for ≤50 daughters listed in the USDA Sire Summaries were included. They had an average of 508 daughters per bull. Analyses between 8 blood polymorphic systems (A, B, F, J, L, M, S and Z) and the PD estimates of breeding merit...

Author(s)
Rausch, W. H.; Brum, E. W.; Ludwick, T. M.
Citation
Journal of Dairy Science, 1968, 51, 3, pp 445-51
Abstract

ALLAIRE, F. R. Another approach to the regression of yield on a contemporary yield average: 925-926.
ANDRUS, D. F., and FREEMAN, A. E. Age distribution, life expectancy, and culling practices in Iowa dairy herds: 939-940.
ARAVE, C. W., and LAMB, R. C. Effect of blood antigen, serum and milk protein ...

Citation
Journal of Dairy Science, 1969, 52, pp 879-948

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