TY  - SER
AU  - El-Zarkouny,S.Z.
AU  - Ghobashy,H.
AU  - Nour El-Din,A.N.M.
AU  - Abdel-Gawad,E.I.
AU  - Hassan,G.A.
TI  - Lambing and embryonic mortality rates in Awassi and Barki ewes and their crosses throughout three different mating seasons in the West- coastal region of Egypt
PY  - 2007///
KW  - Sheep
KW  - Reproduction
KW  - Diseases
KW  - Pregnancy
KW  - Diagnosis
KW  - Livestock
KW  - Embryos
KW  - Mortality
N1  - Includes references
N2  - This study was conducted to determine whether early diagnosis of pregnancy with ultasonography and reintroduction of rams to non-pregnant ewes for additional two estrous cycles would increase pregnancy rate and increase lambing crop. fertile rams were introduced to a totla of 335 awassi and Barki ewes and their corsses for 30 days during three consecuthre mating seasons: Spring autumn, and winter
UR  - http://nile.enal.sci.eg/EALE/2007/AJARX/5207/3/15.pdf
ER  -