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Paper

Written Paper

A PRELIMINARY STUDY ON PERFORMANCE TRAITS OF PIGS FROM TERMINAL SIRE LINES  [2007]

García, A., Instituto de Investigaciones para la Industria Alimentaria. Carretera del Guatao km 3, Punta Brava. La Habana, Cuba Diéguez, F.J., Instituto de Investigaciones Porcinas. Gaveta Postal No. 1, Punta Brava. La Habana, Cuba

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A total of 48 castrate male pigs were used in an experiment to evaluate the effect of sire lines on performance traits during fattening of the more frequently genotypes used in Cuba: Hampshire (H), Hampshire x L35 (HxL35), Duroc (D), Duroc x L35 (DxL35), L35 and CC21. The animals were fed on a commercial concentrated feed from 60 days of age and 26 kg of live weight on average until 100 kg of slaughter weight. Mean daily gain was significantly (P0.05) inferior in L35 pigs and there were no differences amongst the other genotypes (H, 778; HxL35, 808; D, 806; DxL35, 773; L35, 709 and CC21, 825 g/day respectively). Feed and protein conversions (kg DM/kg gain and kg crude protein/kg gain) were inferior in pigs Hampshire, Duroc and HxL35 and were the worst in DxL35, L35 and CC21 (H 3.06 and 0.560; HxL35, 3.25 and 0.595; D, 3.09 and 0.566; DxL35, 3.44 and 0.631; L35, 3.40 and 0.624, and CC21, 3.76 and 0.691, espectively). The genotype CC21 had thehighest rate of growth, as determined by the high feed consumptions but feed conversion was not so efficient. An overall analysis showed that either breeds or crosses from sire lines used in the Cuban pig crossing program show enough genetic potential so as to warrant a satisfactory performance of animals. Besides, it was very clearly demonstrated that CC21 pigs do have the best rate of growth as compared to the other genotypes examined, but a high feed conversion is not favourable in this breed. This point needs of fur
ther research in the future.

From the journal

Revista Computadorizada de Producción Porcina (Cuba)

ISSN : 1026-9053

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