oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 483 )

2018 ( 866 )

2017 ( 845 )

2016 ( 1168 )

Custom range...

Search Results: 1 - 10 of 472837 matches for " T.M. Shafey "
All listed articles are free for downloading (OA Articles)
Page 1 /472837
Display every page Item
Effect of Pigment Intensity and Region of Eggshell on the Spectral Transmission of Light That Passes the Eggshell of Chickens
T.M. Shafey,M.M. Ghannam,H.A. Al-Batshan,M.S. Al-Ayed
International Journal of Poultry Science , 2004,
Abstract: The effects of intensity of brown pigment and region (small pole, equator and large pole) of eggshell on eggshell thickness and per cent transmittance of light (PT) that passes through the eggshell of chicken eggs were investigated. The PT was measured over the wavelength (WL) range of 200 to 800 nm (near-ultra violet (near-UV) WL range from 200 to 380 nm, visible (V) WL range from 380 to 780 nm and near-infra red (near-IR) WL range from 780 to 800 nm). Brown pigment eggshells [light (LBP), medium (MBP) and dark (DBP)] from meat-type breeder (Hybro) eggs of comparable weight were used. The intensity of brown pigment and region of eggshells did not affect eggshell thickness, but significantly (P<0.01) influenced the PT that passes through the eggshell over the WL range of 200 to 800 nm. LBP had higher PT and spectral transmission ratio of the near-UV:V and lower spectral transmission ratio of the near-IR:V when compared with those of the MBP and DBP. Whilst, the MBP had a higher PT than that of the DBP. The equator of eggshell transmitted more light when compared with those of the small (over the near-UV range) and large (over the WL range measured) poles regions. The small pole region of eggshell had higher PT and lower spectral transmission ratios of the near-UV:V and near-IR:V than those of the large pole region. There was an interaction between brown pigment and region of eggshell on PT of light. MBP and DBP eggshells have similar PT at the equator but differ at the poles regions of eggshells. In the MBP, the equator region of eggshell had a lower PT than that of the small pole. Whilst the equator region of the DBP had a higher PT than that of the large pole. The PT of the small pole was higher than that of the large pole in the LBP and DBP groups. It is concluded that the intensity of brown pigment and region of eggshell influence light transmission that passes through the eggshell and consequently the spectral characteristics of eggshell.
Performance, Nutrient Utilization and Carcass Characteristics and Economic Impact of Broiler Chickens Fed Extruded Bakery Waste
I.M. Al-Ruqaie,S.A. Swillam,H.A. Al-Batshan,T.M. Shafey
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2011.2061.2066
Abstract: An experiment was carried out to evaluate the effects of replacing corn with extruded Bakery Waste (BWP) in a corn-soybean basal diet during the starter and finisher periods (day to 21 and 22-35 days of age, respectively) on the performance (weight gain, feed intake and feed conversion ratio), nutrient utilization (apparent nitrogen retention and nitrogen corrected apparent Metabolizable Energy (MEn)), carcass characteristics and cost of feed of broiler chickens. Six isocaloric and isonitrogenous diets were formulated using 0, 20, 40, 60, 80 and 100% of BWP. The levels of corn in the basal (0% BWP) starter and finisher diets were 53.7 and 62.78%, respectively. The replacement of dietary corn for up to 100% with BWP reduced costs of total feed and feed for the production of a kg live weight with no impairment on performance, nutrient utilization and carcass characteristics of broiler chickens. It is concluded that BWP can completely replace corn in broiler diets from day to 35 days of age. The substitution of corn with BWP offers economic benefits for both bakery and poultry producers.
The Effects of Magnetically Treated Water on the Performance and Immune System of Broiler Chickens
S. Al-Mufarrej,H.A. Al-Batshan,M.I. Shalaby,T.M. Shafey
International Journal of Poultry Science , 2005,
Abstract: The effects of water treatment (tab water (CTW) vs. magnetically treated water (MTW)) on the performance (body weight gain, feed intake, feed conversion ratio (feed/gain)) from day to 32 days of age, water consumption (WC) and Water: feed consumption ratio (WFR) during the first three weeks of age (starter phase), carcass composition at 32 days of age, and antibody responses to SRBS antigens of sexed broiler chickens were investigated. MTW was prepared by exposing the water to a magnetic field of approximately 500 gauss. The exposure of water to the magnetic field slightly increased the pH of water from 7.72 to 7.86. The water treatment influenced WC of birds. The daily WC of birds on the MTW was significantly (P<0.05) lower than those on the CTW during the starter phase. The MTW did not influence the WFR during the starter phase, and performance and carcass composition of birds at 32 days of age. Sex of birds influenced body weight gain, and carcass composition at 32 days of age and WC over the starter phase. Males consumed more water, and had a heavier weight gain with high proportions of thigh and drumstick in their carcasses than females. Sex of birds did not influence feed intake and FCR at 32 days of age, and WFR at the starter phase. Water treatment and sex of bird did not influence antibody responses to SRBC antigens. There were significant interaction between water treatment and sex of birds on feed intake, weight gain, WC, and thigh proportion of the carcass. Males consumed more feed and water and had a higher weight gain than females when they drank the CTW, but not when they drank the MTW. Males had a higher thigh proportion in their carcasses than females when they drank the MTW, but not when they drank the CTW. It is concluded that the exposure of tab water to a magnetic field of approximately 500 gauss reduced water consumption, but did not significantly influence the performance, carcass composition and immune system of broiler chickens. Additionally, magnetically treated water reduced the difference in the performance between sexes of broiler chickens to a non-significant level.
Effects of Dietary Electrolyte Balance on the Performance of Broiler Chickens Fed High Calcium Diets
T.M. Shafey,R.S. Aljumaah,M.A.K. Abdelhalim,M.M. Mady,M.M. Ghannam
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2011.2902.2908
Abstract: The effects of high Calcium (Ca, 10 and 25 g kg-1) and Dietary Electrolyte Balance (DEB, 250 (basal diet), 200 and 300 mEq kg-1 (3 diets with high Na, K, Na plus K, respectively) on the performance (Weight Gain (WG), Feed Intake (FI) and Feed Conversion Ratio (FCR)) during the starter and finisher periods (1-20 and 21-33 days of age, respectively) and plasma total Ca and electrolytes and carcass characteristics at 33 days of age of broiler chickens were investigated. DEB treatments were prepared by the addition of NH4Cl, NaHCO3, KHCO3 and NaHCO3 plus KHCO3 to the basal diet, respectively. High Ca diet reduced WG, FI, plasma potassium, eviscerated carcass weight and increased FCR and plasma Ca. Altering DEB of 250 by ±50 mEq kg-1 influenced WG and FI of chickens without altering FCR, plasma total Ca and electrolytes and carcass composition. DEB 200 mEq kg-1 did not influence the performance of chickens. DEB 300 mEq kg-1 had a lower WG than DEB 200 or 250 mEq kg-1 during the starter period. DEB 300 mEq kg-1 with high Na had a higher WG than DEB 200 mEq kg-1 at the finisher period. DEB 300 mEq kg-1 with high K had lower WG and FI of chickens than other DEB treatments and eviscerated carcass weight than DEB 250 mEq kg-1 at 33 days of age. It was concluded that altering DEB within the range of 200-300 did not overcome the growth depression effect of high Ca. DEB manipulation influenced the performance of chickens.
Performance, Egg Characteristics and Economic Impact of Laying Hens Fed Extruded Bakery Waste
T.M. Shafey,M.A. Alodan,H.A. Al-Batshan,M.A. Abouheif,M.S. Alamri,I.M. Al-Ruqaie
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2011.2248.2252
Abstract: An experiment was carried out to evaluate the effects of replacing corn with extruded Bakery Waste (BWP) in the diet of laying hens on the performance (feed intake, egg production, egg weight, egg mass and feed efficiency) and egg components (albumen, yolk and eggshell) and characteristics of eggshell (thickness and strength) and albumen (height and Haugh unit) and yolk (height and color (YH and YC)) and feed costs of egg production. Six isocaloric and isonitrogenous diets were formulated using 0, 20, 40, 60, 80 and 100% of BWP. The level of corn in the basal diet (0% BWP) was 60.16%. The replacement of corn for up to 100% with BWP reduced feed costs with no impairment on the performance, egg components, characteristics of eggshell and albumen and YH. Replacing dietary ≥40% of corn with BWP reduced YC. It is concluded that BWP can completely replace corn in laying hen diets without affecting the performance, egg components, egg characteristics of albumen and eggshell and YH. Yolk pigment should be added to the diet to improve YC when ≥40% of corn replaced with BWP.
Polymorphism of Booroola FecB Gene in Prolific Individuals from Najdi and Naeimi Sheep Breeds of Saudi Arabia
M.A. Abouheif,A.N. Al-Owaimer,T.M. Shafey,M.A. AlShaikh,R.S. Aljumaah
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2011.1262.1264
Abstract: The present investigation was carried out to examine the presence of Booroola FecB mutation gene in 124 selected prolific ewes from 6 flocks representing two Saudi Arabian local sheep breeds by forced PCR-RFLP method. Genomic DNA was extracted from the blood of 69 Najdi and 55 Naeimi matured ewes with litter size varied from 2.01-2.16 lambs per ewe lambing. Digestion of FecB gene 190 base pair with AvaII restriction enzyme resulted in non carrier 190 bp band wild type in all samples which revealed the absence of this mutation in the tested Najdi and Naeimi sheep breeds.
Effects of Glucose Supplementation of Drinking Water on the Performance of Fasting Newly Hatched Chicks
T.M. Shafey,R.S. Aljumaah,S.I. Almufarrej,A.A. Al-Abdullatif,M.A. Abouheif
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2011.2202.2207
Abstract: The effects of Delaying access to Feed and water (DF) after hatch and glucose supplementation of drinking water on the performance of broiler chickens were investigated in 2 trials. DF for up to 48 h immediately after hatch depressed performance, weight of bursa of fabricius and heart and small intestine length and thickness. However, the DF period did not influence mortality percentage, feed efficiency, composition of eviscerated carcass and body weight percentage of small intestine, heart and lymphoid organs of chickens at 33 days of age when compared with birds fed immediately after hatch. Access to feed and water after hatch increased body weight gain, feed intake and eviscerated carcass weight over the 33 days experimental period. The addition of glucose for up to 10% to drinking water of DF birds in the 1st 72 h did not influence the performance and eviscerated carcass of DF birds.
Embryonic Growth of Chicks under the Influence of Electric Field
T.M. Shafey,H.A. Al-Batshan,M.J. Al-Hassan,A.A. Al-Haidary
International Journal of Poultry Science , 2005,
Abstract: Eggs from layer-type breeder flocks (Leghorn and Baladi, King Saud University) between 40 and 45 weeks of age were used in 2 trials to study the effects of electric field (EF) during incubation on embryonic growth and egg water loss. The incubator was divided into two compartments for the control and EF treatments. Two aluminum plates were fitted to the inside walls, face to face, in the EF compartment and connected to a step up electric transformer. The level of the EF was 30 kV/m, 60Hz. Eggs were set in an incubator on trays either in the control or EF during 18 d of incubation. EF incubation increased egg weight loss, and embryonic weight when expressed on an absolute value, percentage of egg weight, and daily weight gain by approximately 14.3, 50, 49.4, and 46.2%, in Leghorn, and 9.6, 14.7, 14.6, and 14.9%, in Baladi eggs, respectively. There were significant interactions between incubation treatment and age of the embryo on egg weight loss and embryo weight. EF incubation had significantly higher percentage of water loss and embryo weight at 16 and 14 d of incubation and older in Leghorn eggs, respectively and at 15 d of incubation and older in Baladi eggs, when compared with their counterparts of the control incubation treatment. It was concluded that the exposure of chicken eggs to EF of 30 kV/m, 60Hz, during incubation increased the egg water loss, and embryonic growth.
Graphical exploration of two-dimensional functions an aid to mastering fundamental calculus concepts
T.M. Steyn
South African Journal of Education , 2002,
Abstract: Technology has become an integral part of all educational activities and can be viewed as a powerful lever to promote the understanding of fundamental mathematical concepts that underpin the study of calculus. This article reports on action research activities during 1993-1998 at the University of Pretoria, which focused on aspects that constitute the coherence between teaching, learning, mathematical conceptualisation and the use of computer graphing technology. Results identify some features of graphing utilities that are necessary to enhance fundamental concepts. The principle findings are that the meaningful combination of graphical exploration and graphical analysis according to a well thought-out didactical approach is necessary in order to incorporate technology successfully into mathematics instruction. (South African Journal of Education: 2002 22(1): 47-55)
The Human Resource Management Challenges of Post Consolidation Mergers and Acquisitions in Nigeria s Banking Indsutry
T.M. Fapohunda
International Business Management , 2012, DOI: 10.3923/ibm.2012.68.74
Abstract: This study examines the human resources challenges of the post consolidation mergers and acquisition in Nigeria s banking industry. The industry went through structural changes which has posed great human resources management challenges. The study adopted the survey research design. A sample of 115 respondents was selected from six of the banks that merged to become two. The simple random sampling technique was used in the selection of sample elements. The instrument for data collection was the questionnaire. Four hypotheses were tested. The hypotheses tested indicated a relationship between the mergers and acquisitions and productivity, job security, labour turnover and level of level of technological innovations. The implementation of the consolidation policy induced a shake-off in the industry which infused a new set of human resource challenges in the sector; some of which include those of job-cutting, outsourcing, downsizing, rightsizing, incompatibility in technologies, equipment or corporate culture. The study posits that human resource is an essential part of mergers and acquisitions and should be given adequate emphasis throughout the processes of mergers and acquisitions. Intended objectives may not be achieved when human resources factors are overlooked. For successful integrations, it is imperative that merger talks and negotiation should go beyond the balance sheet figure to an in-depth understanding and evaluation of cultural compatibility that will promote the realization of the objectives. With the emergence of mega-banks employees must be given necessary training and skill development for the current level of activities in today s banks.
Page 1 /472837
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.