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Abstract

Jersey cattle are the second most prominent breed in the United States and represent a growing portion of the dairy cow population in the United States. The objectives of our study were to determine the male lineages of Jersey sires with official genetic evaluations and to determine whether there...

Author(s)
Dechow, C. D.; Liu, W. S.; Idun, J. S.; Maness, B.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 3, pp 2281-2284
Abstract

The normal time budgets of dairy cows are influenced by oestrus, with cows spending less time resting and eating but more time walking. Previous studies have shown that cows spend approximately 21% less time feeding where the day of oestrus is assumed to be the day of successful artificial ...

Author(s)
Zebari, H. M.; Rutter, S. M.; Bleach, E. C. L.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Applied Animal Behaviour Science, 2018, 206, pp 12-17
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

Publisher
Veepro Holland, Arnhem, Netherlands
Citation
Veepro Magazine, 2013, 84, pp 1-4
Abstract

Reproductive data from 15 dairy herds, in which no routine fertility control was practised, were analysed. The interval from calving to 1st service and the service period averaged 86.4 and 102.0 days resp. For 27.1% of cows, the interval from calving to 1st service was >99 days. The incidence of ...

Author(s)
Boyd, H.; Munro, C. D.
Publisher
Editorial Garsi., Madrid, Spain
Citation
9th International Congress on Animal Reproduction and Artificial Insemination, 16th-20th June 1980. II. Round tables., 1980, pp 373-380
Abstract

Milk production. Average milk yield/cow increased by 25 gal since the previous year, reaching 900 gall. Dairy cows numbered 2 901 000 and beef cows 820 000, representing increases of 7 and 38% resp. over the previous year. Three milk-recording schemes operate, involving 1 008 864 cows in 16 803...

Publisher
Thames Ditton, Surrey.,
Citation
Report of the Breeding and Production Organisation 1972-73. No. 23., 1973, pp 141 pp.
Abstract

Milk Production: The upward trend in total milk production and in yield per cow has continued; the latter reached 875 gal. Dairy and beef cow numbers increased to 2 794 000 and 719 000 resp., due largely to fewer cows being culled. Prices of steer calves rose considerably, those for Hereford X...

Publisher
Thames Ditton, Surrey, England, Milk Marketing Board.,
Citation
Report of the Breeding and Production Organisation, 1971-72, No. 22., 1973, pp 158 pp.
Abstract

Milk production. The av. milk yield/cow increased by 15 gal from the previous year (4543 kg in 1972/73). The ratio of av. fat content to av. protein content for Ayrshires, Dairy Shorthorns, British Friesians, Guernseys and Jerseys was 1:0.86, 1:0.90, 1:0.88, 1:0.79 and 1:0.77 resp. The number of...

Publisher
Thames Ditton, Surrey., UK
Citation
Report of the Breeding and Production Organisation 1973-74, No. 25., 1975, pp 134 pp.
Abstract

In the year ended 31 March 1981 it is estimated that sales of milk from farms in England and Wales totalled 12 805 million l. It is calculated that the net increase of 64 million l compared with 1979/80 results from a decrease of 208 million l due to declining cow numbers and an increase of 272...

Publisher
Thames Ditton, Surrey., UK
Citation
Report of the breeding and production organisation No. 31., 1981, pp 104pp.
Abstract

A general review of the cattle industry in England and Wales during the year is followed by accounts of the board's activities: milk recording, the low cost production scheme, milking machine testing, artificial insemination, progeny testing, and the export of semen. The latter half of the report...

Author(s)
Anon.
Publisher
Thames Ditton: The Board,
Citation
Great Britain. Milk Marketing Board. Report of the Breeding and Production Organisation, Number 20, 1969-1970., 1971, pp 187 pp.

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