Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
732 2 |
Ultima descărcare din IBN: 2023-11-22 13:16 |
SM ISO690:2012 MOVILEANU, Gelu. Optimizarea caracterelor supuse selectiei într-o populaţie de porcine din linia sintetica peris 345
. In: Ştiinţa Agricolă, 2008, nr. 2, pp. 42-46. ISSN 1857-0003. |
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Ştiinţa Agricolă | |||||
Numărul 2 / 2008 / ISSN 1857-0003 /ISSNe 2587-3202 | |||||
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Pag. 42-46 | |||||
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The goal of this paper is the optimization of the selection objective in a paternal pig line. For this purpose, we simulated six types of indices, which differ among them in the number of traits. There were analyzed the following traits: (C. Drăgănescu, 1979) body weight at the age of 182 months (BW), (H. Grosu, S. Lungu, V. D. Kremer, 1997) meat percent in empty body (MPB); (L.N. Hazel, 1943) daily average gain between 0-182 month age and (ADG); (C. R. Henderson, 1963) average daily gain on empty body (ADGB). MPB trait was included in each objective (index). The six indices were: (C. Drăgănescu, 1979) MPB BW; (H. Grosu, S. Lungu, V. D. Kremer, 1997) MPB ADG; (C. R. Henderson, 1963) MPB ADGB; (C. R. Henderson, 1963) MPB BW ADG; (Ge. Movileanu, 2008) MPB BW ASDGB and (Şt. Popescu-Vifor, 1990) MPB BW ADG ADGB. The genetic parameters were computed using the REML method. The biologic importance of the traits were estimated on a linear multiple regression. In order to establish the best combination of traits which maximize the expected genetic progress, some parameters were used, as: accuracy of selection, overall genetic progress (ÄH) and the genetic progress for each trait (ÄGi). The best index was the last,
which included all traits. Its parameters were: 1,087 (rHI); 2,144 (ÄH) and 3,35% (ÄG for MPB).
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Cuvinte-cheie Combination, Daily average, selection, Linear multiple regression, Pig line |
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