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    EFFECT OF SUPPLEMENTATION OF OVINE OVIDUCTAL CELLS WITH LH AND OESTRADIOL-17 beta ON EMBRYO DEVELOPMENT
    (INDIAN VETERINARY JOURNAL, 2008) Ciftci, H. B.; Zulkadir, U.; Boztepe, S.; Ozturk, A.; Dag, B.; Yetisir, R.
    In sheep, towards the end of follicular phase of the oestrus cycle, plasma concentration of E 2 increases and this increase is followed by an increase in LH secretion. The secretion of E 2 and LH can affect the secretary function of the oviductal cells and hence facilitate embryonic development in vitro. Therefore, the aim of this study was to measure the effect of supplementing the oviductal cells with Luteinizing Hormone,(LH) and oestradiol 17 beta (E(2)) on embryo development.
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    Estimation of growth curve parameters in Konya Merino sheep
    (SOUTH AFRICAN JOURNAL OF ANIMAL SCIENCES, 2009) Keskin, I.; Dag, B.; Sariyel, V.; Gokmen, M.
    The objective of this study was to determine the fitness Of Quadratic, Cubic, Gompertz and Logistic functions to the growth curves of Konya Merino lambs obtained by using monthly records of live weight from birth to 480 days of age. The models were evaluated according to determination coefficient (R-2), mean square prediction errors (MSPE) and Durbin Watson (DW) statistics. The R-2 values of the models ranged from 0.96 to 0.99 for females and from 0.96 to 0.99 for males. The Cubic model gave the best R value oF 0.99 in females, while the Logistic model gave the lowest R-2 value of 0.96 in females. The results indicated that the Quadratic and Gompertz models showed the best fit to growth of Konya Merino ewe lambs by having higher R-2 values, lower MSPE and non autocorrelation. By using these models live weights at later ages could be predicted from early partial live weight data. Further studies should be carried Out on growth curve characteristics at later ages including adult age.