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Abstract

Smallholder dairy cattle production systems in Africa are intensifying production through importation of germplasm from breeding programs conducted in temperate regions to improve commercial cow populations. Presence of genotype by environment interaction results in unfavorable correlated...

Author(s)
Kariuki, C. M.
Publisher
Wageningen University, Wageningen, Netherlands
Citation
Breeding strategies for sustainable intensification of developing smallholder dairy cattle production systems, 2017, pp 134 pp.
Abstract

This study aimed to identify risk factors of dystocia and calf death at or during birth on a large dairy farm in Germany and to illustrate practical approaches of reducing it. Another aim was to determine influence factors of calf birth weight and their association with difficult calvings and...

Author(s)
Maschurek, N.
Publisher
Mensch & Buch Verlag, Berlin, Germany
Citation
Untersuchung von Einflussfaktoren auf den Geburtsverlauf bei Kühen und auf das Kälbergeburtsgewicht, 2016, pp xiii + 200 pp.
Abstract

Progesterone (P4) has a key role in the establishment and maintenance processes of pregnancy in cows. The modulation of this steroid at strategic times during ovulation synchronization programs can increase pregnancy success, especially in high-producing dairy cows. Therefore, the objective of this ...

Author(s)
Souza, E. D. F. de
Publisher
Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
Citation
Effect of long-acting injectable progesterone in luteal function and conception rate of high producing Holstein cows submitted to TAI, 2015, pp 68 pp.
Abstract

The livestock is an agribusiness sector that have been highlighted in the national economy. With the intention of supporting this important supply chain, the performance of services of animal health promotion and defense become increasingly necessary. The full understanding of the space on which...

Author(s)
Braga, G. B.
Publisher
Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
Citation
Caracterização dos sistemas de criação de bovinos com atividade reprodutiva e estimativa da prevalência da Brucelose bovina na Região Centro-Sul do Brasil, 2010, pp 189 pp.
Abstract

The three studies were conducted to (1) investigate the prevalence of subclinical endometritis (SCE) around breeding and its effect on first service conception rate (FSCR) in dairy cows, to (2) determine the correlation between periparturient serum concentrations of non-esterified fatty acids...

Author(s)
Kaufmann, T. B.
Publisher
Freie Universität Berlin, Berlin, Germany
Citation
Clinical and subclinical endometritis in dairy cattle: prevalence, indicators and therapy, 2010, pp 71 pp.
Abstract

Date were obtained on 5422 cows in the Louisiana Artificial Breeding Associations. There was no significant difference in the conception rate of cows inseminated in the first 4 six-hour periods after oestrus; the mean daily decline in the fertility of semen was 3.27%. The breeding efficiency of...

Author(s)
Patrick, T. E.
Publisher
Univ. Missouri, Columbia, USA
Citation
A study of some factors affecting efficiency of reproduction in dairy cattle serviced by artificial insemination., 1952, Publ. 4279, pp 90 pp.

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