https://repository.sustech.edu/handle/123456789/25467 2026-04-11T15:28:40Z https://repository.sustech.edu/handle/123456789/26388 Influence of Sorghum Genotype on Germination, attachment and Survival of Striga hermonthica (Del.) Benth. Ahmed Abd Elhafeez, Mashair; Eltayeb Babiker, Abd Elgabar; Hamed Eltayeb, Amani The root parasitic weed Striga hermonthica constitutes a major constraint to cereals production in sub-Saharan Africa. Several control measures have been recommended, however, incompatibility with the prevalent low inputs production systems precludes their adoption. Resistant genotypes could provide an ideal solution; however, durable resistance necessitates pyramiding of resistance mechanisms. The present investigation was undertaken at the College of Agricultural Studies Sudan University of Science and Technology to study in situ germination of S. hermonthica seeds, seedlings attachment and subsequent development, over a three weeks duration, on three sorghum genotypes, Wad-Ahmed, Striga tolerant, and Tetron and Hakika Striga resistant, using an in vitro system (the Rhizotron technique) for sorghum and Striga co-culture. Striga germination progressively increased with time and was 66.9-92.1%, 61.1-85.5% and 52.6-74.1% for Wad-Ahmed, Tetron and Hakika, respectively. Striga seedlings affected comparable attachment (53.6-68.8%) to the roots of the three genotypes. However, development and survival of the seedlings were genotype dependent. At 1-3 weeks post-inoculation Striga seedlings at stage 3 were 19.1-24.7%, 2.9-7.1% and 6.3-12.6% on Wad-Ahmed, Tetron and Hakika, respectively. Seedlings mortality was 0-1.2%, 3.0-8.1% and 2.5-29.6% on Wad -Ahmed, Hakika and Tetron, respectively. The strong developmental arrest noted beyond stage 2, where xylem-to-xylem connection between the parasite and the host was established, coupled with the notable seedling mortality on Tetron and Hakika suggest that Striga resistance in these genotypes is attributed, in part, to impairment of diversion of nutrients, water and carbon compounds from the host to the parasite. 2020-12-01T00:00:00Z https://repository.sustech.edu/handle/123456789/25898 Serum Lipids Profile and Production Performance of Broiler Chicken fed Nilotic Silver Cat Fish Oil Supplemented Diet Hassabelrasoul Eljack, Badr; Abdelwahab Ahmed, Nagah; Ahmed Adam, Efadil; Adam Abdelrahman, Najwa; Abubakr Mohammed, Abdelrahim Fish oil has been used in poultry nutrition to improve performance However, the effect of feeding Nilotic silver cat fish oil had never been studied before. Therefore, this study was designed to evaluate the effect of supplementing Nilotic silver cat fish oil in the diet on the serum lipids profile and production performance of broiler chickens. A total of 90 unsexed one day old (Hubbard15) broiler chicks were used in this experiment. Chicks were distributed in a completely randomized design with three graded levels of silver cat fish oil (0,4 and 6%) (Each treatment contained three replicates with 10 chicks each). Significant (P < 0.05) improvement in total weight gain and feed conversion ratio in birds fed 4 and 6% Nilotic silver cat fish oil supplemented diets compared to those fed the control diet. Dietary treatments had no effects on feed intake and mortality rate among. .Birds fed 4 and 6% silver cat fish oil have lower (P < 0.05) cholesterol (CH )mg/dL, low density lipids cholesterol (LDL) mg/dL and total triglyceride (Poumès-Ballihaut et al.) mg/dL compared to the control group. High density lipids cholesterol (HDL) mg/dL was not affected by Nilotic silver cat fish oil supplementation. This study concluded that supplementing Nilotic silver cat fish oil in broiler diet significantly improved total weight gain, feed conversion ratio and decreased cholesterol level LDL and TG with no effect on HDL. 2020-12-01T00:00:00Z https://repository.sustech.edu/handle/123456789/25839 Effect of Replacing Fishmeal with Ground nut Cake on Growth, Feed Conversion and Carcass Composition of Fingerling Oreochromis niloticus (Nile Tilapia) Yousif, Ramzy A.; Khan, Mukhtar A.; Zehra, Seemab In this study, firstly proximate composition and fatty acid profile of oilseed meal used in fish feeds were analyzed and then feasibility of replacing fishmeal with ground nut cake for Nile tilapia Oreochromis niloticus fingerling by replacing 0% control diet, 20%, 40%, 60%, 80% and 100% fishmeal protein by ground nut oil cake protein was worked out. Fish were stocked at the rate of 20 per tanks in triplicate groups. Oreochromis niloticus fingerlings (0.57±0.02g; 3.49±0.12 cm) were fed the experimental diets near to satiation for 6 weeks. Diets used in this experiment contained 35% CP and 16.53 kJ.g-1 GE, replacement of fish meal by groundnut oil cake on protein to protein basis was found to be feasible up to 20% as evident by insignificant differences (p<0.05) among the absolute weight gain (2.56±0.05 g/fish), feed conversion ratio (1.68±0.01), protein efficiency ratio (1.70±0.02) and specific growth rate (3.45±0.02%) of fish fed diet 2. However, further replacement of fish meal by ground nut cake protein beyond 20% resulted in a marked decrease (P<0.05) in above parameters. Article 2020-12-01T00:00:00Z https://repository.sustech.edu/handle/123456789/25838 Effect of some Physic-Chemical Parameters of Water on Macro Minerals Composition of Nile Tilapia (Oreochromis niloticus) Cultured in Different Environments . Idam, O A; Musa, Rowaida S.; Elhashmi, Y. H.; Yousif, R.A. The study was conducted to evaluate minerals composition of Nile tilapia (Oreochromis niloticus) in wild environment (general Nile) compared with aquaculture environment, specifically in different types of ponds (concrete, polyethylene and earthen Ponds) in fish farms in Khartoum State. Also this work intended to determine and compare some physic-chemical parameters of water in the studied fish environment. Moreover, the study was conducted to compare some parameters according to source of water (Nile or wells). A total of 388 samples of Nile tilapia were collected from River Nile and governmental and private fish farms around Khartoum State and the samples were subjected to mineral analysis (Na, K, Ca, Fe, and P). Water samples were collected for water quality parameters (unionized ammonia NO3 -1 , sulphide H2S, temperature ºC, and pH). The findings of this study revealed that, Oreochromis niloticus from Nile environment has higher level of Na, K and P than from ponds and there was highly significant difference (P≤0.01), but there was no significant difference (P>0.05) for Ca and Fe. Fourty eight water samples were collected from River Nile and governmental and private fish farms around Khartoum State and subjected to physic-chemical analysis. There was a highly significant difference (P≤0.01) in all water quality parameters according to rearing site. However, when study Nile river water and wells water, H2S, temperature and pH showed no significant difference (P>0.05), while unionized ammonia showed significant difference (P≤0.05). Accordingly, the study concluded that Nile river water has a high water quality than other sources of water, also, River Nile aquaculture environment is an immediate environment in relation to ponds environment. The study recommended that more investigation in aquaculture and water quality parameters will provide knowledge and improve fish production. Article 2020-12-01T00:00:00Z