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Effect of agro-ecological zone,season of birth and sex on pre-weaning performance of Nguni calves in Limpopo Province,South Africa |
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| Authors: | Mpofu T. J. Ginindza M. M Siwendu N. A. Nephawe K. A. Mtileni B. J. |
| Affiliation: | 1.Department of Agricultural Economics and Animal Production, University of Limpopo, Private Bag X1106, Sovenga, 0727, South Africa ;2.Department of Animal Science, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa ; |
| Abstract: | The study was conducted to determine the effect of agro-ecological zone, season of birth and sex on Nguni calves’ pre-weaning performance. Production indices such as birth weight (BW), weaning weight (WW), pre-weaning average daily gain (P-ADG) and pre-weaning gain (P-WG) were assessed in the different agro-ecological zones. Herd records on performance of 826 Nguni calves’ from nine Nguni herds representing different agro-ecological zones: arid zone (n?=?217); semi-arid zone (n?=?296); dry sub-humid zone (n?=?118) and humid zone (n?=?195) were used for the analysis of pre-weaning calf performance. General linear model (GLM) procedure of SAS (2013) was used to analyse data, whereas mean separation was conducted using Tukey’s HSD test. Agro-ecological zone had a great influence (P?P? |
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