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Publication
Managing the herdbook of an endangered Portuguese swine population: the Malhado de Alcobaça pig
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Advisor(s)
Abstract(s)
Malhado de Alcobaça breed is the 3rd Portuguese native swine breed and represents a population from the centre
west of Portugal and was officially recognised in 2003. The herdbook has information of more than 11,000 animals
(1985-2020) and the last animals have more than 10 known generations on their pedigree. It´s a very endangered
breed with only 211 breeding sows, 12 boars and 9 active breeders. Since 2014 all candidates for breeding must be
submitted to a grading process by analysing their morphology under 5 marks and, at the same time, placing an ear
tag ID, collecting, simultaneously, tissue for DNA analysis, for parentage testing and genetic characterisation. All
data from the gradings was analysed to obtain the descriptive statistics and the linear and quadratic effect of age at
grading, besides considering the effects of breeder, gender and year. Since 2014, 448 pigs where graded (415 sows and
33 boars) with average age of 15.87±8.88 months (15.96±8.99♀; 14.61±7.35♂). Only 7 different breeders produced
breeding sows and boars, and 4 of them are responsible for 83% of the breeding stock in use. For the grading grid
(scale with maximum of 10 pts.) the average scores for morphology were 8.54±0.72 pts for type and development;
8.35±0.68 pts for back, loin and croup; 8.24±0.64 pts for shoulders, chest, belly and flanks; 7.99±0.81 pts for legs,
stances and gaits; and 8.43±0.66 pts for sexual characteristics, genitals and nipples, obtaining and overall sum of
82.58±4.45 pts. Globally boars obtain more 1.5 points than sows and the score for legs was the lowest with higher
coefficient of variation. Breeder and year of grading were significant (P<0.05) for all morphological traits analysed and
gender was only significant (P<0.001) for back, loin and croup. Age at grading had a significant linear effect (P<0.05)
in Overall sum and for some partial morphological scores
Description
Apresentação em painel
Keywords
Suíno Malhado Alcobaça
Citation
Vicente; A., Roque, A., Bastos, J. & Carolino, N. (2020). Managing the herdbook of an endangered Portuguese swine population: the Malhado de Alcobaça pig. Book of Abstracts of the 71st Annual Meeting of the European Federation of Animal Science, 26. p.523
Publisher
Wageningen Academic Publishers