The determination of plasma progesterone, oes- tradiol-17β and luteinizing hormone levels during oestrous period of Tuj ewe-lambs follo- wing oestrus induction
نویسندگان
چکیده
Tuj sheep, a well adopted breed for the geography and climate of the highlands, originated in the Caucasus and are found throughout the northeast of Turkey. Although the mature sheep are able to reproduce normally at these conditions, ewe-lambs are normally not able to reach puberty during the first year of their life. Shortage in feed due to long and cold winters together with the seasonality of reproduction in this breed results in postponement of reproductive activity to the next breeding season. Hence a whole year of production is lost for the farmers of the region.
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Effect of early tail-docking on luteinizing hormone pulse frequency in fat-tailed Tuj ewe-lambs
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