Longevity and age structure in dairy cattle

Halawa, Arafa Attia Arafa.

Longevity and age structure in dairy cattle [computer files]/ طول الحياه الإنتاجية و التركيب العمرى فى ماشية اللبن. Arafa Attia Arafa Halawa. - 2007. - Computer laser optical disks; 4 3/4 in.

Thesis (Ph.D.)--Ain Shams University,2007.

Includes bibliographical references (leaves 70-81)


System requirment:Adope reader 8 (version 8.1.2)


Summary in English.


Dairy cattle--Longevity.
Dairy cattle--Breeding.
Dairy cattle--Genetics.
Milk yield.
Cattle--Reproduction.

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