Knowledge Resource Center for Ecological Environment in Arid Area
| The effects of weather variability on growth potential of Afrikaner cattle in a semi-arid region in Zimbabwe | |
| Chipfupa;Lukas | |
| 出版年 | 2013 |
| 英文摘要 | Only part of the abstract could be included due to the rest having renderable text The abiotic environment plays an important role in cattle production. Key abiotic elements evaluated in this study are rainfall and temperature. This study was carried out to assess the effect and contribution of rainfall and temperature, amid other factors, on pre- and post-weaning growth traits of Afrikaner cattle at Matopos Research Institute from 1958 to 1997. Historical data generated from a genotype x environment interaction study at Matopos Research Institute was used to identify factors associated with the average daily weight gain of calves of Afrikaner cattle breed. A total of 10 700 records were retrieved comprising of birth weight (BW), 90 day weight, 205 day weight and early post-weaning weight as well as additional corresponding rainfall and temperature data from 1958 to 1997. The rainfall and temperature data was computed asrainfall and temperature variability. The data was corrected for heteroscedasticity using the generalized least squares approach (GLS) before running an ordinary least square regression (OLS) analysis to determine the association between growth rate and potential explanatory factors for average daily weight gain, pre-weaning weight gain and early post-weaning weight gain. Agriculture and Animal Health M. Sc. (Agriculture) |
| 英文关键词 | Abiotic elements Rainfall Temperature Afrikaner cattle Weather Matopos Research Institute 636.0096891 Arid regions climate -- Zimbabwe Arid regions ecology -- Zimbabwe Climatice changes -- Zimbabwe Cattle -- Climatic factors -- Zimbabwe Matopos Research Institute |
| 语种 | 英语 |
| URL | http://hdl.handle.net/10500/10198 |
| 资源类型 | 学位论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/247382 |
| 推荐引用方式 GB/T 7714 | Chipfupa;Lukas. The effects of weather variability on growth potential of Afrikaner cattle in a semi-arid region in Zimbabwe[D],2013. |
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