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. 2021 Apr 8;11(4):1051.
doi: 10.3390/ani11041051.

Kid Growth Comparison between Murciano-Granadina and Crossbred Murciano-Granadina×Boer in a Mixed Rearing System

Nemesio Fernández  1 , José L Palomares  1 , Ión Pérez-Baena  1 , Martín Rodríguez  1 , Cristòfol J Peris  1
Affiliations

Kid Growth Comparison between Murciano-Granadina and Crossbred Murciano-Granadina×Boer in a Mixed Rearing System

Nemesio Fernández et al. Animals (Basel). .

Abstract

In dairy goats, the low average daily gain and the high conversion ratio for milk and concentrate of the kids mean that their sale price does not offset the costs generated. The hypothesis proposes that a crossbreeding of the Murciano-Granadina breed (MG) with the Boer breed (MG×Boer) will improve the profitability of the kids sold. Thus, the effect of two different groups of kids (purebred MG and crossbred MG×Boer) on birth weight (BW), mortality, average daily gain (ADG), the time for minimum slaughter weight (7 kg) and its variation factors were studied. MG×Boer kids had a 27% greater BW than purebred MG kids (2885 ± 84 g and 2275 ± 74 g, respectively), similar ADG (156 ± 6 g and 142 ± 6 g, respectively) and mortality (18% and 20%, respectively), and reached minimum slaughter weight a week sooner. ADG was less and less as the lactation period progressed due to a lower milk consumption and milk energy value, which highlights the importance of providing a concentrate that will compensate for this reduced energy content. In conclusion, the results show that MG×Boer crossbred kids reached the minimum slaughter weight a week earlier than purebred MG kids, and highlighted the improvement of farm profitability through the increase of milk sold and the need to provide a concentrate feed to enhance the growth of the kids.

Keywords: Murciano-Granadina; crossbreeding; kids; mixed rearing system; profitability.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Evolution of unadjusted kids’ live weight according to their genetic type, in a mixed rearing system (MG = Murciano-Granadina; week 0 corresponds to the birth weight).
Figure 2
Figure 2
Evolution of the average daily gain (ADG) associated with the effects of genetic type and sex of the kids, in a mixed rearing system (MG = Murciano-Granadina).
See this image and copyright information in PMC

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