المقالات العلمية - كلية الزراعة
Permanent URI for this collectionhttps://repository.neelain.edu.sd/handle/123456789/3068
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Item Growth Performance and Carcass Characteristics of Broilers Fed Different Levels of Dietary Lysine(2014) Mohamed E. Ahmed; Talha E. AbbasThe effect of feeding different levels of dietary lysine (100%, 110% and 120% of NRC 1994 recommendations) was evaluated in the current study. These levels were included in broiler starter and finisher diets. A completely randomized experimental design was used. Feed intake and body weight gain in broilers receiving 110% of NRC 1994 lysine, were significantly (P≤0.05) increased versus control. However, feeding 120% lysine significantly (P≤0.05) decreased feed intake. Body weight gain was not different (P≥0.05) among broilers fed control diet and 120% lysine. Feed conversion ratio was not significantly (P≥0.05) different among dietary lysine levels. There was no significant (P≥0.05) effect of dietary lysine levels on dressing percentage, relative weight of gizzard and liver. However, relative weight of abdominal fat decreased significantly in broilers received 110% and 120% of NRC lysine. It was concluded that offering 110% of NRC lysine to broiler chicks enhanced feed intake and body weight gain, but supplying of dietary lysine to broiler chicks above this level might decrease feed intake. Addition of 110% and 120% NRC lysine to broiler diet declines relative weight of abdominal fat.Item Effect of Dietary Phytocee and Zist on Broiler Performance and Carcass Characteristics(2016) Mohamed E. Ahmed; Nasir H. Mohamed; Talha E. AbbasAbstract: The present study was aimed at evaluation of growth performance and carcass characteristics of broiler chicks fed dietary polyherbal formulation Phytocee and Zist. One hundred and twenty day-old, unsexed broilers (Ross 308) with an initial live body weight of 46.78g ± 0.21 were randomly assigned to 3 dietary treatments, each consisting of 4 replicates with 10 birds each. The three starter and finisher experimental diets consisted of control (0.0% phytocee and 0.0% Zist), 0.03% phytocee and 0.03% Zist. Dietary treatments indicated no significant (p>0.05) effect on all live performance parameters through starter, finisher and overall period. However, overall body weight gain, FCR and PER were improved in Zist diet by 10.84, 11.68 and 9.80%, respectively compared to control. Carcass characteristics and internal organs showed no significant (p>0.05) differences in response to dietary treatments. The result of the current study revealed that Zist improves live performance parameters during different growth phases. Based on this finding, Zist could be added to either starter or finisher broiler diet with positive effects on broiler performance.Item Effect of Choline Chloride Supplementation on Broiler Chicks Fed Leucaena leucocephala Seeds(2011) Mohamed Elamin Ahmed; Khadiga Abbas AbdelatiAbstract: This experiment was carried out to assess the effect of feeding leucaena seeds supplemented with choline on broiler chicks’ performance. Two levels of choline chloride (0, 0.1%) were added to three levels of leucaena seeds (0, 6 and 12%) and incorporated in broiler starter and finisher diets. All performance parameters were depressed with the inclusion of leucaena seed diets. PCV% of birds fed any level of leucaena seed diets was not significantly different compared to control. Plasma GOT, ALP, Na, Pi, K and globulin were not affected by the dietary treatments. Plasma cholesterol of birds fed leucaena seed diets was significantly lower than that of control. Leg score of birds fed leucaena seed diets was significantly (p<0.05) poorer compared to the control except for birds fed 6% choline supplemented leucaena seeds