UN SDG
Livestock Studies 1989, Vol 29, Num, 1-4     (Pages: 053-065)
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The effect of Egg weights on Hatchbility and live weight gain of Erbros chicks in Lalahan

Sabiha ÜNAL 1 ,brahim ÖZCAN 1

1 Lalahan Hayvancılık Arastırma Enstitüsü, Ankara - In this study eggs of crossbred Erbro grandmother hens A22 and grandfather cocks B55 were used. Eggs were diveded into 4 groups accading to weight of eggs. The egg weight range of groups 1, 2, 3 and 4 were 55-60, 61-65, 66-70 and 71-75 g. respectively.

The avarage weight of eggs for groups 1, 2, 3 and 4 were 58.10, 63.18, 67.90 and 72.44 g. respectively.

The obtained number of chicks of group 1 was 130 at the and of hatching period, this guantity was considered as standard and thesame number of chicks of other groups were included into feeding experiments chickswere numbered before feedingtrials.

The mean chick weight of groups were 39.40, 42.66, 46.02 and 49.08 gr. respectively.

Chicks were weighed after 5, 6, 7 , and 8 wechs The determined avarege chick weight of groups 1, 2, 3 and 4 after 5, 6, 7 and 8 wechs were 1059.3; 1162.9; 1192.8 and 1193.4 g. 1476.2; 1551.9; 1564.5 and 1584.07 g.; 1843.5, 1920, 1985.8 and 1983.6 g. and 2186.7; 2225.9, 2279.7 and 2306.4 respectlvely.

The percantage living rate and feed consuming rate (chick-day/g.) of groups 1, 2, 3 and at the end of 8 weeks were observed 95.3, 90.7, 98.4 an 99.2/and 119.18, 125.1, 115.77 and 116.77 respectively. During the feeding trials, the efficiency of feed utilization for groups 1, 2, 3 and 4 were 3.10 -3.20 -2.90 and 2.89 respectively.

Statistically significnat correlation were found between groups 1 and 4 and groups 1 and 3.

In conclusion it may be said that chicks of Erbro hybird obtained from 60 g. or havier eggs were showed higher living rate and much more higher weight gain compare to the other groups. Keywords :