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Animal Science Database

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Abstract

The objective was to examine (a) how pregnancy rate on one farm (500 cows) was affected by signs of oestrus and disease stressors and (b) whether pregnancy rate could be maximised by considering cow activity. The signs of oestrus and timings were recorded at artificial insemination (AI), and cow...

Author(s)
Bijker, I.; Christley, R. M.; Smith, R. F.; Dobson, H.
Publisher
BMJ Publishing Group, London, UK
Citation
Veterinary Record, 2015, 176, 16, pp 411
Abstract

The aim of this study was to trial the viability of the vaginal deposition method in UK sheep at pasture during the mating period. 20 Cheviot mule ewes were inseminated once at natural oestrus using frozen-thawed semen from a Texel ram. Oestrus was detected using a vasectomised ram with keel paint. ...

Author(s)
Crilly, J. P.; Sargison, N. D.; Söderquist, L.; Holmström, A.
Publisher
BMJ Publishing Group, London, UK
Citation
Veterinary Record, 2016, 178, 21, pp 532
Abstract

Good heat detection is essential for good reproductive performance in the modern dairy herd using artificial insemination. Veterinary surgeons and farmers use a variety of tools to monitor heat detection including the analysis of inter-service intervals (ISIs). The aim of this study was to explore...

Author(s)
Remnant, J. G.; Huxley, J. N.; Hudson, C. D.
Publisher
British Cattle Veterinary Association, Quedgeley, UK
Citation
Cattle Practice, 2015, 23, 1, pp 27-32
Abstract

Large percentages of dairy cows do not express behavioural signs of oestrus. Faecal and urine fatty acid concentrations increase during oestrus. The objective of the present study was to determine the milk FA profile of dairy cows during the oestrous and dioestrous periods and the relationship with ...

Author(s)
Zebari, H. M.; Rutter, S. M.; Bleach, E. C. L.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2019, 202, pp 26-34
Abstract

Plasma progesterone concentrations were estimated for 381 nulliparous dairy heifers from eight farms on days 4-6 after insemination. Heifers were synchronised using two treatments of prostaglandin F2α (PGF2α) 11 days apart. Alternate heifers were treated with 1500 IU human chorionic gonadotrophs...

Author(s)
King, S. G.; Dobson, H.; Royal, M. D.; Christley, R. M.; Murray, R. D.; Routly, J. E.; Smith, R. F.; Mann, G. E.
Publisher
BMJ Publishing Group, London, UK
Citation
Veterinary Record, 2013, 173, 18, pp 450
Abstract

Reproductive technologies including AI have been increasingly adopted worldwide by the dairy industry. Inadequate oestrus detection and labour required for oestrus detection are major reasons why AI is used infrequently in beef production (Kyle and others 1998). Oestrus synchronisation protocols...

Author(s)
Statham, J. M. E.
Publisher
British Cattle Veterinary Association, Quedgeley, UK
Citation
Cattle Practice, 2015, 23, 1, pp 74-97
AbstractFull Text

Author(s)
Bapodra, P.; Green, D.; Watson, P.
Publisher
British and Irish Association of Zoos and Aquariums, London, UK
Citation
Proceedings of the 8th Annual Symposium on Zoo Research, Colchester Zoo, UK, 24-25 July 2006, 2007, pp 1-3
AbstractFull Text

The trends in the reproductive performance of pigs in the UK are presented in this paper. The causes of poor fertility in pigs are discussed (postweaning multisystemic wasting syndrome, preweaning mortality and abortions). The factors taken as the basis for the UK subfertility problem are given...

Author(s)
Woolfendon, N.
Publisher
Society of Feed Technologists, Reading, UK
Citation
Society of Feed Technologists. Proceedings 2004. 29 January, Disease Control without Medicines; 27 April, Ruminant Nutrition; 10 June, Quality Assurance; 4 November, Nutrition and Management for improving Pig Health and Productivity, 2005, pp 1-11
Abstract

This review includes tabulated data and diagrams illustrating the authors' research. Information on the basic physiological mechanisms that regulate the reproductive function of zebu cows is scarce, and the little that is known indicates that there are peculiarities with respect to expression of...

Author(s)
Galina, C. S.; Escobar, F. J.
Publisher
University of Edinburgh Centre for Tropical Veterinary Medicine, Edinburgh, UK
Citation
Milk production in developing countries. Proceedings of the conference held in Edinburgh from the 2nd to 6th April, 1984 organised by the Centre for Tropical Veterinary Medicine., 1985, pp 245-253
Abstract

II. The mean body temperature was 100.2°F. in the morning and 101.4° in the evening. A thermal response to oestrus was noted although no correlation between body temp, and the stage in the cycle could be established. It is suggested that temperature could be used as an adjunct in oestrus...

Author(s)
Fallen, G. R.
Citation
Queensland Journal of Agricultural Science, 1960, 16, pp 439-447

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