The Effect of Urea-Treated Barley Straw on the Reproductive Performance and Post-Partum Ovarian Activity of Libyan Barbary Sheep

Subject Areas : Camel

F. Akraim ¹ , A.F. Magid ² , M.S. Rahal ³ , A. Ahmad ⁴ , M. Aboshwarib ⁵

1 - Omar Al-Mukhtar University, Faculty of Agriculture, Al-Baida, Libya
2 - Tripoli University, Faculty of Agriculture, Tripoli, Libya
3 - Tripoli University, Faculty of Agriculture, Tripoli, Libya
4 - Tripoli University, Faculty of Agriculture, Tripoli, Libya
5 - Tripoli University, Faculty of Veterinary Medicine, Tripoli, Libya

Received: 2011-12-17 Accepted : 2012-03-01 Published : 2013-06-01

Keywords:

References:

Abi Saab S., Jammal B., Aoun B.K. and Rahal Z. (2003). Effect of urea supplementation and urea treated straw on the reproduction performance of growing Awassi ram lambs. Leb. Sci. J. 4,22-27.
Akraim F., Majid A.F., Rahal M.S. and Ahmed A.A. (2009). The effect of urea-treated barley straw in ewe’s diet on pre-weaning growth parameters of lambs.Arch. Zootech. 12, 71-75.
Alves N.G., Torres C.A., Guimarães J.D., Moraes E.A., Rodrigues M.T., Cecon P.R., Bitencourt L.L. and Amorim L.S. (2011). Effect of urea in the diet on ovarian follicular dynamics and plasma progesterone concentration in Alpine goats. R. Bras. Zootech. 40, 1512-1518.
Assay protocol version 3.1. (1996). Progesterone RIA pre-coated tube method. Joint FAO/IAEA Programme. IAEA, Vienna.
Benhaj M.K., Madani M.O.K. and Rahal M.S. (1990). Observation on the ovarian activity of the Libyan fat-tailed ewes: I. Uterine involution and postpartum ovarian activity. Vet. Med. J. Giza. 38, 467-471.
Bond J. and Oltjen R.R. (1973). Growth and reproductive performance of beef females fed high urea containing diets. J. Anim. Sci. 37, 1040-1047.
Canfield R.W., Sniffen C.J. and Butler W.R. (1990). Effects of excess degradable protein on postpartum reproduction and energy balance in dairy cattle. J. Dairy Sci. 73, 2342-2349.
Chagas L.M., Bass J.J., Blache D., Burke C.R., Kay J.K., Lindsay D.R., Lucy M.C., Martin G.B., Meier S. and Rhodes F.M. (2007).New perspectives on the roles of nutrition and metabolic priorities in the subfertility of high-producing dairy cows. Invited Review. J. Dairy Sci. 90, 4022-4032.
Cloete S.W.P., De Villiers T.T. and Kritzinger N.M. (1983). The effect of ammoniation by urea on the nutritive value of wheat straw for sheep.South African J. Anim. Sci. 13, 143-146.
Dawuda P.M., Scaramuzzi R.J., Leese H.J., Hall C.J., Peters A.R., Drew S.B. and Wathes D.C. (2002).Effect of timing of urea feeding on the yield and quality of embryos in lactating dairy cows.Theriogenology. 58, 1443-1455.
Doan D.V., Cuong L.X., Dung C.A. and Hai P.H. (1999). Use of urea-molasses-multinutrient block and urea-treated rice straw for improving dairy cattle productivity in Vietnam. Prev. Vet. Med. 38, 187-193.
Dunn T.G. andMoss G.E. (1992). Effects of nutrient deficiencies and excesses on reproductive efficiency of livestock.J. Anim. Sci. 70, 1580-1593.
Ferguson J.D., Galligan D.T., Blanchard T. and Reeves M. (1993).Serum urea nitrogen and conception rate: The usefulness of test information. J. Dairy Sci. 76, 3742-3746.
Hadjipanayiotou M. (1982). The effect of ammoniation using urea on the intake and nutritive value of chopped barley straw. Grass Forage Sci. 37, 89-93.
Magid A.F., Zaied A.A. and Sheraha A.M. (1992). The Libyan Barbary sheep. I. Reproductive traits. Libyan J. Agric. 13, 5-11.
McEvoy T., Robinson J., Aitken R., Findlay P. and Robertson I. (1997). Dietary excesses of urea influence the viability and metabolism of pre-implantation sheep embryos and may affect fetal growth among survivors. Anim. Reprod. Sci. 47, 71-90.
Santos J.E.P. (2001). Dietary ingredients and nutritional management impact fertility in dairy cattle. Pp. 189-219 in Proc. 36^th Pacific Northwest Animal Nutrition Conference. Boise, ID.
Schiere J.B. and Nell A.J. (1993). Feeding of urea treated straw in the tropics. I. A review of its technical principles and economics. Anim. Feed Sci. Technol. 43, 135-147.
Snedecor G.W. andCochran W.G. (1956). Statistical Methods Applied to Experiments in Agriculture and Biology. 5^th Ed. Iowa State University Press. Ames, Iowa.
Stabenfeldt G.H., Drost M. and Franti C.E. (1971). Peripheral plasma progesterone levels in the ewe during pregnancy and parturition. Endocrinology. 90, 144-150.
Thompson L.H., Goode L., Harvey R.W., Myers R.M. and Linnerud A.C. (1973). Effects of dietary urea on reproduction in ruminants. J. Anim. Sci. 37, 399-405.