Natural & Applied Sciences

Natural & Applied Sciences Research Papers/Topics

EFFECTS OF DIFFERENT LEVELS OF BLACK CUMIN SEEDS (Nigella sativa L.) AS AN ADDITIVE ON LAYERS PERFORMANCE AND BLOOD BIOCHEMICAL CONSTITUENTS

Abstract: The study was conducted to investigate the effects of different levels of black cumin seed (Nigella sativa L.) on chicken performances, fertility and hatchability of egg, chick quality, embryonic mortality, blood parameters and economic benefit of black cumin seeds on white leghorn layers at Haramaya University Poultry Farm for 70 days. One hundred eighty WL layer at twenty- four weeks of age with an average initial body weight of 1219.52± 5.45g were randomly distributed to four t...

EFFECT OF AGE, BODY CONDITION AND POSTSLAUGHTER HANDLING ON SLAUGHTER CHARACTERISTICS AND MEAT QUALITY OF CAMEL (Camelus dromedarius) IN EASTERN ETHIOPIA

Abstract: Ethiopia having 4.5 million heads of dromedary camels is the third in camel population worldwide. However, studies pertaining to the role of camel as meat animal and its meat quality are not well addressed so far. This dissertation was aimed to investigate the effects of age, body condition, and postslaughter handling on slaughter characteristics and quality of camel meat in eastern Ethiopia. The survey assessed camel meat production potentials and constraints in Shinile district a...

EFFECTS OF REPLACING DIFFERENT LEVELS OF SOYBEAN MEAL WITH SCREENED RED HARICOT BEAN (Phaseolus vulgaris. L) ON EGG PRODUCTION, QUALITY, FERTILITY AND HATCHABILITY OF WHITE LEGHORN HENS

Abstract: The study was conducted to evaluate effects of replacing different levels of sceerened red haricot bean (SRHB) for soybean meal on dry matter intake, body weight gain, egg production, egg quality, feed conversion ratio, fertility, hatchability, chick quality of white leghorn chicken, and economic profitability. A total of 225 (195 hens + 30 cocks) at age of 30 weeks with initial body weight of 1104.7± 16.35 gram were randomly distributed in to 15 pens each with 13 hens and 2 cocks...

EFFECT OF SEED SOURCES AND RATES ON PRODUCTIVITY OF BREAD WHEAT (Triticum aestivum L.) VARIETIES AT KERSA, EASTERN ETHIOPIA

Abstract: productivity is low due to use of poor quality seeds, inappropriate seed rate and unavailability of adaptable improved varieties to wide range of agro-ecologies. Therefore, this experiment was conducted at Kersa, eastern Ethiopia with the objectives of evaluating the effect of seeds sources, seed rates and varieties on yield and yield related traits and to determine seed quality of different sources of bread wheat varieties. The laboratory experiment was laid out as Completely Rand...

EFFECTS OF FEEDING DIFFERENT VARIETIES OF FABA BEAN (Vicia faba L.) STRAWS WITH CONCENTRATE ON FEED INTAKE, DIGESTIBILITY, BODY WEIGHT GAIN AND CARCASS CHARACTERISTICS OF ARSI-BALE SHEEP

Abstract: A study was conducted using 40 yearling Arsi-Bale sheep with initial body weight of 19.85+0.29 kg (mean + SD). The objectives were to evaluate the varietal differences among faba bean straws and to evaluate effects of feeding different varieties of faba bean straws with concentrate (2 parts wheat bran: 1 part noug seed cake) fed at the rate 70% straws and 30% concentrate mixture on feed intake, digestibility, body weight gain and carcass characteristics of the animals. The varietie...

EFFECT OF INTEGRATED USE OF RHIAZOBIUM INOCULATION, VERMICOMPOST AND PHOSPHORUS ON YIELD AND YIELD COMPONENTS OF COMMON BEAN (Phaseolus vulgaris L.) AT BAKO, WESTERN ETHIOPIA

Abstract: Common bean (Phaseolus vulgaris L.) is an important food security crop in Ethiopia. However, the national average yield is very low owing to a number of abiotic and biotic stresses. Low soil fertility, coupled with limited fertilizer application practice by famers could be amongst the major one of the stresses that may caused for the low national mean yield of the crop in the country. Therefore, a field experiment was conducted at Bako to study the effect of integrated use of Rhizo...

EFFECT OF FEEDING DIFFERENT LEVELS OF MAIZE SILAGE ON FEED INTAKE, LIVE WEIGHT GAIN, CARCASS CHARACTERISTICS, AND MEAT QUALITY OF HARAR CATTLE

Abstract: The experiment was conducted at Haramaya University Beef fattening station, to evaluate the effect of maize silage inclusion at different levels on feed intake, growth performance, carcass characteristics, and meat quality. Twelve castrated Harar oxen of average age 6 years with the initial body weight of 229±1.18 kg (mean+SE) were used for the experiment. The animals were randomly distributed to four treatments each with three replications in a completely randomized design. The d...

Appraisal of crustal contamination in southern Bastar Mafic Dykes in Chattisgarh, India

Abstract: The present work is an attempt to assess the effect of crustal contamination through the Granitoids host rock, within the southern Bastar mafic dykes of Chhattisgarh, India, in the light of geochemical characteristics. Petrographically, these dykes are classified as Amphibolite, Dolerite/Meta-Dolerite and Diorite. Geochemically, all dyke samples have been classified as “high iron sub-alkaline Tholeiites”. On account of overlapping magnesium and iron concentration in Amphibolite...

GROWTH PERFORMANCE, BEEF YIELD, QUALITY AND BIOCHEMICAL BASES FOR TENDERNESS IN BEEF FROM ARSI, HARAR, OGADEN AND F1 JERSEY*HORRO CROSSBRED BULLS FED CORN SILAGE BASED FINISHING DIET

Abstract: This study was conducted to evaluate the growth performance, carcass characteristics, meat yield, primal meat cuts, meat quality, and some biochemical bases for tenderness of meat from bulls of Arsi, Harar, Jersey*Horro crossbred, and Ogaden cattle breeds finished on corn silage based diet at Beef Cattle Farm, Haramaya University, Ethiopia. A total of 12 bulls of four cattle breeds (i.e. 3 bulls from each breed of Arsi, Harar, Jersey*Horro crossbred, and Ogaden) with 2.0 to 2.5 yea...

Effectiveness of using milled Moringa Oleifera seeds as a disinfectant in waste water treatment

Abstract: Water disinfection is a crucial water treatment process because it deals with the removal of pathogens to make water safe to drink. Moringa oleifera extract was used as a disinfectant and the total coliform count was monitored through microscopic observations. The total coliform bacteria removal at a dosage of 5 ml/100 ml of Moringa Oleifera extract was counted to be 13 colonies from an original count of 200 colonies, translating to about 93.5% removal of the bacterial strains. The...

Investigating the cybersecurity threat landscape for Botswana

Abstract: Movement restrictions introduced by the coronavirus pandemic have incentivized the rollout of online services globally. Additionally, more employees were telecommuting throughout the pandemic and remote work has become the new normal. This has provided nefarious actors with lucrative opportunities. Hence there has been an increase in online criminal and terrorism activities. The weaponization of the cyberspace is also a concerning trend in the ongoing geopolitical tensions. This is...

Investigation of the efficacy of a ZnO-starch nanocomposite packaging to prolong the shelf life of fragaria ananassa (strawberries)

Abstract: Nanomaterials have been used recently in food packaging as antibacterial coatings because of their desirable antibacterial and antifungal properties. The use of antimicrobial packaging is to deter the growth of microorganisms responsible for spoilage or diseases in packaged foods, therefore prolonging their shelf life. In this study, potato peel starch and ZnO-starch nanocomposite paper (ZnO-starch NC paper) were developed and evaluated for antibacterial activity against Esche...

The effects of heavy metals on the quality and yield of vetiver grass (chrysopogon zizanioides) essential oil

Abstract: Vetiver grass (Chrysopogon zizanioides;CZ) is a well-known grass that can both remediate various heavy metals in soil as well as producing essential oil that is commonly used in premier perfumery, food and pharmaceutical industries. Due to this versatility property, this study was aimed at extracting essential oil from Chrysopogon zizanioides roots cultivated in SelibePhikwe mine tailings and study the quality and quantity (chemical composition and yield) of the Chrysopogon ziza...

Generalized synchronization of regulate seizures dynamics in partial epilepsy with fractional-order derivatives

Abstract: The dynamical behavior and the synchronization of epileptic seizure dynamics, with fractional-order derivatives, is studied in this paper. Knowing that the dynamical properties of ictal electroencephalogram signal recordings during experiments displays complex nonlinear behaviors, we analyze the system from chaos theory point of view. Based on stability analysis, the system presents three equilibrium points with two of them unstable. Moreover, the system reveals attractor points fr...

Impact of higher-order dispersions and non-kerr nonlinearities on soliton pulse trains induced by modulational instability in doped and undoped optical fibers

Abstract: We start by considering the theory of electromagnetic waves, from the Maxwell’s equa tions, the extended (1+1)D complex Ginzburg-Landau equation, higher-order nonlin ear Schr¨odinger equation are derived with the third, fourth, fifth and sixth-order dis persions and the cubic, quintic, and septic nonlinear terms, describing the dynamics of extremely short pulses in nonlinear undoped and doped optical fibers. The linear stability analysis is employed to extract an expression for ...


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