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Influence of phosphorus supplementation on growth and reproductive characteristics of beef cows in the semi-arid bushveld of South Africa
Dissertation (MSc(Agric))--University of Pretoria, 2008.
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University of Pretoria
2013
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| _version_ | 1867613463135649792 |
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| access_status_str | Open Access |
| author2 | Du Plessis, I. |
| author_browse | Du Plessis, I. |
| author_facet | Du Plessis, I. |
| collection | Thesis |
| dc_rights_str_mv | © University of Pretoria 2007 E996/ |
| description | Dissertation (MSc(Agric))--University of Pretoria, 2008. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/27405 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:36:32.683Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/27405 Influence of phosphorus supplementation on growth and reproductive characteristics of beef cows in the semi-arid bushveld of South Africa Du Plessis, I. Webb, E.C. (Edward Cottington) phoeka80@yahoo.com Orsmond, Michelle Bonsmara cows Semi-arid bushveld South africa Beef cows Reproductive Growth UCTD Dissertation (MSc(Agric))--University of Pretoria, 2008. In this experiment, the influence of phosphorus supplementation on growth and reproductive characteristics of beef cows in the semi-arid bushveld of South Africa was studied. The parameters in this study included weight, intercalving period and conception rates of cows, as well as birth weight, weaning weight and weight gain of calves. The experiment consisted of three trials. Trial 1 involved Bonsmara cows with four dietary supplementation groups. These were control, phosphorus supplementation all year round, phosphorus supplementation in the summer months and summer phosphorus supplementation with a winter lick. Trial 2 dealt with Bonsmara cows and included two dietary supplementation groups, namely control and phosphorus supplementation all year round. Trial 3 compared four different breeds (Afrikaner, Simmentaler, Nguni and Bonsmara) and included two dietary supplementation groups, notably a control group and a Kimtrafos 12 P supplementation all year round. Phosphorus supplementation had no significant effect on cow weight in Trial 1 (p > 0.1), but was significant in Trial 2 (p< 0.001) with the supplemented group performing better than the control group. In Trial 3, phosphorus supplementation had a varied effect on cow weight, because it only had an effect for the months of June to November (p< 0.05). Phosphorus supplementation had no significant effect on birth weight in any of the trials. Treatment did however either show a tendency towards significance or was significant for weaning weight and weight gain in Trial 2 (p= 0.0272 and p= 0.0524 respectively) and Trial 3 (p= 0.0587 and p= 0.0464 respectivey), with the treated groups performing better than the control groups. There was no improvement in calving interval or conception rate for phosphorus supplemented cows in any of the trials. Animal and Wildlife Sciences unrestricted 2013-09-07T11:28:30Z 2008-09-04 2013-09-07T11:28:30Z 2008-04-15 2008-09-04 2008-08-20 Dissertation a 2007 E996/gm http://hdl.handle.net/2263/27405 http://upetd.up.ac.za/thesis/available/etd-08202008-123226/ © University of Pretoria 2007 E996/ application/pdf University of Pretoria |
| spellingShingle | Bonsmara cows Semi-arid bushveld South africa Beef cows Reproductive Growth UCTD Influence of phosphorus supplementation on growth and reproductive characteristics of beef cows in the semi-arid bushveld of South Africa |
| title | Influence of phosphorus supplementation on growth and reproductive characteristics of beef cows in the semi-arid bushveld of South Africa |
| title_full | Influence of phosphorus supplementation on growth and reproductive characteristics of beef cows in the semi-arid bushveld of South Africa |
| title_fullStr | Influence of phosphorus supplementation on growth and reproductive characteristics of beef cows in the semi-arid bushveld of South Africa |
| title_full_unstemmed | Influence of phosphorus supplementation on growth and reproductive characteristics of beef cows in the semi-arid bushveld of South Africa |
| title_short | Influence of phosphorus supplementation on growth and reproductive characteristics of beef cows in the semi-arid bushveld of South Africa |
| title_sort | influence of phosphorus supplementation on growth and reproductive characteristics of beef cows in the semi arid bushveld of south africa |
| topic | Bonsmara cows Semi-arid bushveld South africa Beef cows Reproductive Growth UCTD |
| url | http://hdl.handle.net/2263/27405 http://upetd.up.ac.za/thesis/available/etd-08202008-123226/ |