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Manifestation of heterosis in the fowl embryo due to the crossing of specialised lines

Manifestation of heterosis in the fowl embryo due to the crossing of specialised lines

Izv. timiryazev. sel'.-khoz. Akad, 4, 182-188

The laying performance of line-1 Russian Whites (R.W.s), line-B Moscows and their reciprocal crossbreds was studied using 12 birds in each group and measuring the 800-900 eggs laid by each group following A.I. For the 2 purebreds resp., egg weight averaged 58.78 and 56.80 g, shell weight 5.33 and 5.17 g, weight of yolk 18.02 and 17.15 g, weight of white 35.11 and 34.34 g, weight of thick white 26.55 and 25.08 g, albumen index 0.079 and 0.079, and yolk index 0.400 and 0.413.

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