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The effect of inbreeding on birth and weaning weight and livability of barki and rahmani lambs.

By:

Hammoud, M. H

Contributor(s):

Taha, T. A

Language: engbara Description: p.9-15Other title:

تأثير التربية الداخلية علي وزن الميلاد والفطام والحيوية للحملان البرقي والرحماني [Added title page title]

Uniform titles:

Alexandria journal of agricultural research, 2005 v. 50 (1) [electronic resource].

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Full text Article.

In: Alexandria Journal of Agricultural Research 2005.v.50(1)Summary: Data representing 324 Barki and 346 Rahmani lambs raised at Alexandria University Experimental Station between 1992-2001 were utilized to study the effect of inbreeding of lambs and ewes on birth and weaning weights and on livability of lambs to 7, 14, 30, 60 and 120 days of age. The least squares analysis with unequal subclass numbers indicated that inbreeding of lambs had no significant effect on birth and weaning weights of lambs, but had highly significant effect on livability of Barki lambs to 14 days of age and on livability of Rahmani lambs to 60 days of age and had significant effect on livability of Rahmani lambs to 30 and 120 days of age. On the other hand, inbreeding of ewes had significant effect on birth weight and highly significant effect on weaning weight of Rahmani lambs only, but had no significant effect on livability of lambs of both breeds at different ages.

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Data representing 324 Barki and 346 Rahmani lambs raised at Alexandria University Experimental Station between 1992-2001 were utilized to study the effect of inbreeding of lambs and ewes on birth and weaning weights and on livability of lambs to 7, 14, 30, 60 and 120 days of age. The least squares analysis with unequal subclass numbers indicated that inbreeding of lambs had no significant effect on birth and weaning weights of lambs, but had highly significant effect on livability of Barki lambs to 14 days of age and on livability of Rahmani lambs to 60 days of age and had significant effect on livability of Rahmani lambs to 30 and 120 days of age. On the other hand, inbreeding of ewes had significant effect on birth weight and highly significant effect on weaning weight of Rahmani lambs only, but had no significant effect on livability of lambs of both breeds at different ages.

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