1. Addass, P.A., Midau, A., Milka, M. and Tizhe, M.A., 2010. Assessment of abattoir foetal wastage of cattle, sheep and goat in Mubi Main Abattoir Adamawa State, Nigeria. World Journal of Agricultural Science, 6 (2), 132–137.
2. AGFACTS, 2003. How to tell the age of sheep. New South Wales Department of Agriculture. Available on: www.agric.nsw.gov.au . Accessed on August 13, 2011.
3. Barbato, O., Sousa, N. M., Debenedetti, A., Canali, C., Todini, L. and Beckers, J.F., 2009. Validation of new pregnancy-associated glycoprotein radioimmunoassay method for the detection of early pregnancy in ewes. Theriognology, 72, 993–1000.
4. Bokko, P.B., 2011. Pregnancy wastage in sheep and goats in the Sahel region of Nigeria. Nigerian Veterinary Journal, 32 (92), 120–126.
5. Bulent, E., Elif, E.E., Omur, K., Hulya, Y. and Alper, Y., 2012. Effect of pre-slaughter management regarding transportation and time in lairage on certain stress parameters, carcass and meat quality characteristics in Kivircik lambs. Meat Science, 90(4), 967–976.