KHALIL, F., ABD-ELAZIZ, A., GOMAA, I., ABDEL-REHIM, S. (2000). REPRODUCTIVE PERFORMANCE, PLASMA PROGESTERONE PROFILE AND DIGESTIBILITY IN EWES FED RATIONS CONTAINING DIFFERENT NI- TROGEN SOURCES. Egyptian Journal of Agricultural Research, 78(1), 237-350. doi: 10.21608/ejar.2000.321695
FAROK A. KHALIL; AHMED M. S. ABD-ELAZIZ; ISMAIL A. GOMAA; SAHAR A. ABDEL-REHIM. "REPRODUCTIVE PERFORMANCE, PLASMA PROGESTERONE PROFILE AND DIGESTIBILITY IN EWES FED RATIONS CONTAINING DIFFERENT NI- TROGEN SOURCES". Egyptian Journal of Agricultural Research, 78, 1, 2000, 237-350. doi: 10.21608/ejar.2000.321695
KHALIL, F., ABD-ELAZIZ, A., GOMAA, I., ABDEL-REHIM, S. (2000). 'REPRODUCTIVE PERFORMANCE, PLASMA PROGESTERONE PROFILE AND DIGESTIBILITY IN EWES FED RATIONS CONTAINING DIFFERENT NI- TROGEN SOURCES', Egyptian Journal of Agricultural Research, 78(1), pp. 237-350. doi: 10.21608/ejar.2000.321695
KHALIL, F., ABD-ELAZIZ, A., GOMAA, I., ABDEL-REHIM, S. REPRODUCTIVE PERFORMANCE, PLASMA PROGESTERONE PROFILE AND DIGESTIBILITY IN EWES FED RATIONS CONTAINING DIFFERENT NI- TROGEN SOURCES. Egyptian Journal of Agricultural Research, 2000; 78(1): 237-350. doi: 10.21608/ejar.2000.321695
REPRODUCTIVE PERFORMANCE, PLASMA PROGESTERONE PROFILE AND DIGESTIBILITY IN EWES FED RATIONS CONTAINING DIFFERENT NI- TROGEN SOURCES
1Faculty of Agriculture, Ain Shams University, Cairo, Egypt
2Animal Production Research Institute, Agricultural Research Centre, Ministry of Agriculture, Dokki, Giza, Egypt
Abstract
T welve Suffolk crossbred ewes were used in this study. Animals randomly assigned to three equal groups and received three different rationss: control ration (C group), 40% ammoniated corn stover (ACSGROUP) and 10% broilers litter ration (BL group).Experimental period included two months preception, gestation and first five weeks of suckling period.Estrous cycle length was not influenced by the dietary treatments, with overall mean 16 days.Mean gestation lenghth was longer (P<0.05) in BL group than C group (152.25 versus 148 days). Litter weight at birth was not influenced by treatment and not correlated with the length of gestation. Conception rate was not influenced by treatment, while, lambing rates decreased. Mean peak concentration of plasma progesterone increased (P<0.01) in response to dietary treatments in cycliing ewes but not in pregnant ewes.Twin pregnancies were higher in mean plasma progesterone level than single pregnancies(11.76 versus 8.39 mg/ml). Lambs growths during the first five weeks of suckling period decreased (P<0.05) in BL group. The ACS ration had better CP, EE and NFE digestibility, TDN, DCP and the highest daily intake of TDN. It could be concluded that feeding rations contaning 40% ACS or 10% BL generally maintains the productive and reproductive performance of cycling, pregnant and lactating ewe.
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