Reproductive Performance in Response to Different Energy and Protein Feeding Regimens of Nubian Goats in the Sudan
This study was conducted to investigate the effects of feeding different levels of energy and protein on the reproductive performance of Sudanese Nubian goats. Forty- four female Nubian goats (3-5 years old) were divided into four equal groups and fed on different levels of energy (2.22 -3.12 Mcal /kg DM) and protein (7.3% - 13.1%dry matter). The animals were synchronized for estrous with progesterone - impregnated intravaginal sponges + PMSG (400 - 500 IU). About 80-90% of treated goats showed estrus response within 48h. The conception rate (72%) and kidding rate(63% and 54%) are higher in goats fed high level of protein ( group HEHP and LEHP) these goats showed significant (P<0.05) shorter time for resumption of ovarian activity after kidding. kid survival is 100% in group HEHP whereas, high mortality rates occurred in groups fed low levels of energy ( LELP and LEHP).
Keywords: Nutrient Supplementation, Energy, Protein, Reproductive Performance, Nubian goats