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Abstract

In 1989/90 in South Africa, 601 107 doses of semen were sold from dairy bulls, 485 917 being from Frieslands, 83 779 from Jerseys, 19 756 from Ayrshires and 12 455 from Guernseys. The total sales of semen in 1989/90 were 3.1% lower than in the previous yr. In 1989/90, there were 48 Friesland, 11...

Author(s)
Hicks, E. L.
Publisher
Animal and Dairy Science Research Institute, Irene, South Africa
Citation
National dairy cattle performance and progeny testing scheme, Republic of South Africa. Annual Report. Volume 10-1990., 1990, pp 56-59
Abstract

In 1988/89 in South Africa, 621 168 doses of semen were produced from dairy bulls, 503 685 being from Friesland bulls, 82 716 from Jerseys, 21 648 from Ayrshires and 13 119 from Guernseys, and of these, 23 336, 4767, 701 and 1236 doses resp. were from progeny-tested bulls. The sales of semen...

Author(s)
Dicks, L.
Publisher
Animal and Dairy Research Institute, Irene, South Africa
Citation
National dairy cattle performance and progeny testing scheme. Republic of South Africa. Annual report. Volume 9 - 1989., 1989, pp 52-55
Abstract

In 1987/88 in South Africa, 605 125 doses of semen were produced from dairy bulls, 490 532 being from Friesland bulls, 78 782 from Jerseys, 21 935 from Ayrshires and 13 876 from Guernseys, and of these 15 900, 3497, 2182 and 1971 doses resp. were from progeny-tested bulls. The sales of semen have...

Author(s)
Dicks, E.L.
Publisher
Animal and Dairy Science Research Institute, Irene, South Africa
Citation
National dairy cattle performance and progeny testing scheme. Republic of South Africa. Annual report. Volume 8\dash\1988, 1989, pp 55-58
Abstract

In 1986/87 in South Africa, 566 639 doses of semen were produced from dairy bulls, 459 364 being from Friesland bulls, 73 070 from Jerseys, 20 532 from Ayrshires and 13 673 from Guernseys, and of these 21 807, 4605, 1675 and 990 resp. were from progeny-tested bulls. The sales of semen have...

Author(s)
Dicks, E. L.
Publisher
Animal and Dairy Science Research Institute, Irene, South Africa
Citation
National dairy cattle performance and progeny testing scheme. Republic of South Africa. Annual report. Volume 7 - 1987., 1988, pp 57-60
Abstract

In 1985/86 in South Africa, 612 843 doses of semen were produced from dairy bulls, 502 665 being from Friesland bulls, 71 563 from Jerseys, 22 888 from Ayrshires and 15 727 from Guernseys, and of these 26 504, 4244, 2015 and 1710 resp. were from progeny-tested bulls. The sales of semen increased by ...

Author(s)
Dicks, E. L.
Publisher
Animal and Dairy Science Research Institute, Irene, South Africa
Citation
National Dairy Cattle Performance and Progeny Testing Scheme. Republic of South Africa. Annual report. Volume 6 - 1986., 1987, pp 53-56
Abstract

Citation
Yearbook, Karakul Breeders Society of Southern Africa, 1985, Ed. 27, pp 73-74
Abstract

Short accounts are given of work on dairy performance, progeny testing, recording programmes, reproduction and artificial insemination of dairy cattle and goats in South Africa.

Publisher
Animal and Dairy Science Research Institute, Irene, South Africa
Citation
National dairy cattle performance and progeny testing scheme, Republic of South Africa. Annual Report volume 10-1990., 1990, pp 85pp.
Abstract

In 1982/83 in South Africa, 554 533 doses of semen were produced from dairy bulls, 450 892 doses being from Friesland bulls, 69 941 from Jerseys, 19 338 from Ayrshires and 14 362 from Guernseys, and of these, 22 175, 16 383, 3264, 1418 and 1110 resp. were from progeny-tested bulls. The sales of...

Author(s)
McDonald, C. T.
Publisher
Animal and Dairy Science Research Institute, Irene, South Africa
Citation
National dairy cattle performance and progeny testing scheme, Republic of South Africa. Annual report. Volume 3 - 1983., 1984, pp 52-56
Abstract

In 1983/84 in South Africa, 556 930 doses of semen were produced from dairy bulls, 453 243 doses being from Friesland bulls, 69 312 from Jerseys, 20 397 from Ayrshires and 13 978 from Guernseys, and of these, 24 610, 15 549, 4560, 2360 and 2141 resp. were from progeny-tested bulls. The sales of...

Author(s)
McDonald, C. T.
Publisher
Animal and Dairy Science Research Institute, Irene, South Africa
Citation
National dairy cattle performance and progeny testing scheme, Republic of South Africa. Annual report. Volume 3 - 1983., 1984, pp 51-54
Abstract

In 1978, AI by owners/stockmen rather than technicians was widely introduced in dairy herds in South Africa. This resulted in a 46.6% increase in the use of AI in the ensuing 4 yr. In 1981/82, dairy bulls produced 508 514 doses of semen, 415 053 doses being from Friesland bulls, 65 244 from...

Author(s)
McDonald, C. T.
Publisher
Animal and Dairy Science Research Institute, Irene, South Africa
Citation
National dairy cattle performance and progeny testing scheme, Republic of South Africa. Annual report. Volume 2 - 1982., 1983, pp 34-35

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