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Abstract

94 Africander × (Hereford × Shorthorn) and Brahman × (Hereford × Shorthorn) cows, and reciprocal crosses of these 2 breed types, were first mated at 27 months of age. For the 8, 38 and 48 cows that failed to conceive during 0, 1 and 2 of 4 annual mating periods, age at puberty averaged 505±26,...

Author(s)
Post, T. B.
Publisher
University of Illinois, Urbana, USA
Citation
10th International Congress on Animal Reproduction and Artificial Insemination, June 10-14 1984, University of Illinois at Urbana-Champaign, Illinois, USA. Volume II. Brief communications., 1984, Paper No. 173, pp 3 pp.
Abstract

The cattle population decreased by 3.0% from the previous year to 13.6 million. The number of herdbook-registered animals was 1 023 667, composed of 453 495 German Black Pieds, 262 966 German Simmentals, 163 525 German Red Pieds, 87 970 German Browns, 19 135 Angelns, 17 131 German Yellows, 5052...

Citation
Arbeiten. Arbeitsgemeinschaft Deutscher Rinderzuchter, 1972, No.42, pp 169 pp.
Abstract

Milk Production: The upward trend in total milk output and in yield per cow has continued, the latter rising by 25 gall to 850 gall. This is 200 gall above the figure 20 yr ago. Dairy cows numbered 2, 725, 000 and beef cows 675, 000, representing increases of 1 and 31% resp. since 1961.
Three milk...

Publisher
Thames Ditton, Surrey: Breeding and Production Organisation, Milk Marketing Board,
Citation
Report of the Breeding and Production Organisation, 1970-71. No. 21, 1971, pp 187 pp.
Abstract

Previous books in Longman's Tropical Agricultural Series have dealt with cattle production only to a limited extent, and Dr. Payne's latest contribution is a welcome addition; however, it is perhaps unfortunate that it has had to be produced in two volumes. With the present high price of books, few ...

Author(s)
Payne, W. J. A.
Publisher
London: Longman Group Ltd.,
Citation
Cattle production in the tropics. Vol. 1. General introduction and breeds and breeding., 1970, pp xv+ 336 pp.
Abstract

A Shorthorn herd, comprising 376 cows (92 lactating) and 68 heifers, was bred by A.I. under extensive grazing conditions. First service C.R. was higher in dry cows than in lactating cows (51% v 30%), and higher in cows than in heifers (47% v 31%). Pregnancy rate was influenced by lactation (87% of...

Author(s)
Plasto, A. W.; Hall, W. J. A.
Citation
Proceedings of the Australian Society of Animal Production, 1970, 8, pp 306-311
Abstract

The total number of inseminations by breed was: Ayrshire, 66, 564; Guernsey, 380, 048; Holstein-Friesian, 5, 016, 245; Jersey, 353, 658; Brown Swiss, 151, 139; Milking Shorthorn, 26, 681; and Danish Red, 248. The number of bulls used was 50, 199, 1054, 189, 72, 21 and 4 resp., of which 9, 44, 354,...

Author(s)
Norman, H. D.; Mcdaniel, B. T.; Dickinson, F. N.
Citation
Dairy-Herd-Improvement-Ass. Lett., 1970, 46, 1, pp 14 pp.
Abstract

The C.R. to 1st service of 144 Shorthorn cows which received a 2-min uterine massage prior to A.I. was 62% v 44 for a similar group of cows not massaged. Younger cows showed a greater response to stimulation than mature and older cows.

Author(s)
Hall, W. J. A.; Plasto, A. W.
Citation
Proceedings of the Australian Society of Animal Production, 1970, 8, pp 375-378
Abstract

The total cattle population increased by 0.6% to 14, 061 million. The number of herdbook-registered animals was down by 1.9% to 925, 504, composed of 500, 407 German Black Pied, 187, 228 German Red Pied, 159, 171 German Simmental, 32, 863 German Brown, 19, 049 Angeln, 7881 German Yellow, 5256...

Citation
Arb. ArbGemeinsch. dt. Rinder-zuchter., 1969, 39, pp 35 + [95] pp.
Abstract

The aim of Irish agriculture has been to maximize both its beef and milk production. The main dairy bulls are Dairy Shorthorn and British, or more recently Dutch, Friesians; the main beef bulls are Aberdeen-Angus (A.A.), Hereford and Beef Shorthorn. Details are given of the bull licensing scheme,...

Author(s)
Gillmor, D. A.
Citation
Journal of the Department of Agriculture and Fisheries, Republic of Ireland, 1969, 66, pp 5-25
Abstract

The first 20 crossbred calves have been born in a venture to establish the Santa Gertrudis breed in New Zealand [for previous report see A.B.A., 37, No. 4290]. The artificially inseminated heifers were Aberdeen-Angus, Beef Shorthorn and Australian Illawarra Shorthorn. Birth weight of the calves...

Author(s)
Hooker, C.
Publisher
New Zealand Department of Agriculture, Wellington, New Zealand
Citation
New Zealand Journal of Agriculture, 1969, pp 61-63

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