Les ressources génétiques caprines en Tunisie
1Laboratoire des Ressources Génétiques Animales et Alimentaires, Institut national Agronomique de Tunisie ,1082 Cité Mahrajène, Université de Carthage
2 Institut national de recherche agronomique de Tunisie, Laboratoire de production animale et fourragère, Ariana 1004, Université de Carthage
Abstract – The increase of animal production levels and the reflection on adaptation strategies to climate change using indigenous breeds have recently become a focus of interest. The local Tunisian goat is well known for its resistance to harsh environments, extreme climate and limited food availability. The objectives of this study were to describe the performance of the current goat population in Tunisia and the constraints that threaten the goat-breeding sector. A total of 3322 growth records of goat from 8 flocks, recorded during a period of 14 years (2004-2018), was used in this study. Main results showed that the Damascus displayed the heaviest weight for all ages. The average weight at birth for Damascus, Boer and Alpine were 4.28kg ± 0.44, 3.82kg ± 0.36, and 3.86kg ± 0.48. The average weight at 90 days of age for Damascus, Boer and Alpine were 16.22 kg ± 3.78, 13.58kg ± 4.39, and 13.59kg ± 4.41. The Damascus registered the highest Average daily gain. The ADG0-30 for Damascus, Boer and Alpine were 135.95g/d ± 58.7, 75.70g/d ± 48.36, 80.92 g/d ± 62.64, and the ADG30-90 for Damascus, Boer and Alpine were 124.09g/d ±43.32, 114.676 g/d ± 58.85, and 95.59g/d ± 50.19. The lack of a national goat growth control program, as well as hierarchical crossbreeding with exotic breeds, seriously threatens the local goat. Appropriate genetic improvement strategies to conserve the local goat should be considered as a priority.
Key words: climate change, local goat, strategy, performance