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Homogeneous and quality results in cross-breeding pigs

Homogeneous and quality results in cross-breeding pigs with the goals of investigating the homogeneity and quality of herdability genetic characteristics in three cross-breeding pigs.

UVESA proposes the development of a research project to find out: The influence that the genetic lines have, by means of multiplication protocols on the litter homogeneity and the quality and characteristics of their carcass. Taking into account UVESA GENETIC in SPAIN and DEGARO in ROMANIA whose maternal genetic bases are a cross LDxLW, we are attempting to study: Capacity and inheritability of mother and father characters in experimental crosses with line boars: Report on 2,500 sows in SPAIN and 2,500 in ROMANIA. 3 lots will be created in each centre and inseminations will be made with at least 7 boars of each genetic line. The cross breed will be made as follows: * Example for both farms in SPAIN and in ROMANIA with 2,500 sows: Nulliparous and multiparous sows in oestrous will be inseminated with boar semen of a genetic line over 14 weeks. * 42 weeks will be needed to do three series of 14 weeks for the 3 lines to be crossed. * 7 boars of each line will be used to do the mating during the 14 weeks required. With 1.5 weekly collections, we would use 25 ejaculates per boar. We would have enough doses for the test by using a transcervical insemination system. * After 14 weeks we would have an average of 1,540 deliveries per tested cross and 220 per boar. Concerning the piglets or the fatten pigs which will be obtained by line and boar, there would be about 13,500 and 1,980 respectively. This is a high number of pigs because only a 3% of the sample would be used to make the analytical controls by means of sampling at random. With this sampling, 60 pigs-sows per boar would be checked and 420 in each centre. The only premise to be met is that 50% of the 60 animals checked should be male and the other 50% should be female. SUMMARY TABLE CENTRE IN SPAIN * Cross1 LDxLW X DUROC Boars: 7 Fatten pigs/m: 30 sow/s; 30 boars/m Total: 420 * Cross2 LDxLW X LW Boars: 7 Fatten pigs/m: 30 sow/s; 30 boars/m Total: 420 * Cross3 LDxLW X PIETRAIN Boars: 7 Fatten pigs/m: 30 sow/s; 30 boars/m Total: 420 CENTRE IN ROMANIA * Cross1 LDxLW X DUROC Boars: 7 Fatten pigs/m: 30 sow/s; 30 boars/m Total: 420 * Cross2 LDxLW X LW Boars: 7 Fatten pigs/m: 30 sow/s; 30 boars/m Total: 420 * Cross3 LDxLW X PIETRAIN Boars: 7 Fatten pigs/m: 30 sow/s; 30 boars/m Total: 420 These cross breeds will be studied with the following characteristics: In SPAIN by UVESA and the CENTRO TECNOLOGICO AGROPECUARIO DE LAS CINCO VILLAS: a) Final product homogeneity (slip opened). b) Homogeneity and dressed carcass shape. c) Inheritability of markers genes. d) Inheritability between different lines. e) Carcass profitability, etc. In ROMANIA by DEGARO and ROMANIA UNIVERSITY: * Bromatologic characteristics of the meat: a. PSE b. DFD c. Tenderness-Toughness d. Biochemical composition: - Proteins: % - Fats: % sat. and unsat. Study of the profile of fatty acids and stability against oxidation. Cholesterol. - Carbohydrate - Fat-soluble and water soluble vitamins - Macro and micro minerals (phosphorous, calcium, etc.). e. Aw (water activity) f. Humidity and capacity of water retention. g. Fat infiltration degree h. Salts: Nitrates and nitrites, chloride. i. Hydroxyproline determination. The results will be statistically analysed grouping them by boar and afterwards by genetic line where correlation, variance or deviation between them will be checked and chi-squared will be applied. These experiments will be carried out in UVESA and DEGARO centres creating three groups in each one with approximately 150 sows. 33% nulliparous, 33% primiparous and 33% multiparous will be included in each lot. It is essential to use individual identification systems in order to obtain reliable data. This system tries to guarantee the traceability between parental lines and the individuals whose hereditary characters will be studied. The method of individual identification will be reliable, easily applied and read, and for this reason it is proposed to use subcutaneous MICROCHIPS. Keywords: pig keeping, pig production, farm animals.
Acronym: 
CROSS
Project ID: 
3 416
Start date: 
01-08-2004
Project Duration: 
29months
Project costs: 
1 440 000.00€
Technological Area: 
Animal Selection/Production / Husbandry technology
Market Area: 
Animal Husbandry

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