EFFECT OF SELECTING SIRES ACCORDING TO THEIR NUMBER OF PYLORIC CECA UPON THE GROWTH OF OFFSPRING IN RAINBOW-TROUT (SALMO-GAIRDNERI RICHARDSON)

被引：9

作者：

BERGOT, P ^{[1
]}

BLANC, JM ^{[1
]}

ESCAFFRE, AM ^{[1
]}

POISSON, H ^{[1
]}

机构：

[1] INRA, HYDROBIOL RECH CTR, ECOL POISSONS & AMENAGEMENT LAB, F-64310 ASCAIN, FRANCE

来源：

AQUACULTURE | 1981年 / 25卷 / 2-3期

关键词：

D O I：

10.1016/0044-8486(81)90182-4

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

Two sires were selected, from each of 4 full-sib families, according to high (sup) and low (inf) ceca number. Pyloric ceca number, precocity and growth of offspring were studied in a factorial breeding plan of these 8 sires crossbred with 3 dams. Compared with the progeny of inf sires, the progeny of sup sires exhibited a higher ceca number, slightly more precocious development (as shown by beginning of hatching, 1st feeding and degree of hydration during yolk resorption) and a higher growth rate. Significant correlations were found, within dams, between fish length at 239 days and ceca number both within and between families of offspring. Although the physiological links between ceca number and growth are still obscure, the possibility of improving growth performance in rainbow trout by indirect selection on ceca number is discussed.

引用

页码：207 / 215

页数：9

共 8 条

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[2]

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[4]

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[7]

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[8]

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