المقالات العلمية - كلية الزراعة

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    Broiler performance and carcass characteristics as affected by graded levels of cinnamon (Cinnamomum zeylanicum) powder
    (2016) Mohamed Elamin Ahmed; Tamadur Ali Eltayb Algam; Talha Elsadig Abbas
    Abstract The present experiment was conducted to investigate the effect of different levels of cinnamon powder (0.0, 0.25, 0.50 and 0.75%) on broiler performance and carcass characteristics. One hundred and sixty, 1 day-old, unsexed broiler (Ross 308) weighed (48.1 g ±1.7) were randomly assigned to 16 floor pens (1m2 each) with wood shavings. The four isocaloric and isonitrogenous starter and finisher diets were formulated according to nutrient specifications of national research council (NRC.1994). Feed intake, live body weight, body weight gain, FCR and PER were determined for each pen. At the end of the experiment (6 weeks of age) two birds from each pen were randomly selected, weighed and manually slaughtered for carcass characteristics and internal organ determination. Data were analyzed in completely randomized design using the general linear model (GLM) procedure. Growth performance parameters except body weight gain, FCR and PER during starter phase were not significantly (P≥0.05) influenced by the dietary treatment. Body weight gain was significantly (P≤0.05) reduced for birds fed 0.50% cinnamon powder versus those fed control and 0.25%. FCR and PER for birds fed 0.50% and 0.75% cinnamon powder were significantly (P≤0.05) poorer than control. Most of the carcass traits and internal organs weights were not significantly (P≥0.05) affected by the dietary treatments. It can be concluded that inclusion of cinnamon powder up to 0.75% had no growth promoting effect on broiler chickens.
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    Chemical Composition and Amino Acids Profile of Leucaena Jeucocephala Seeds
    (2009) Mohamed Elamin Ahmed; Khadiga Abbas Abdelati
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    Effect different fat sources on performance and carcass characteristics of broilers
    (2017) Mohamed Elamin Ahmed; Talha Elsadig Abbas
    Abstract An experiment was conducted to evaluate the effect of dietary fat source on broiler performance and carcass characteristics. Ninety one day-old unsexed Ross 308 broiler chicks were purchased from a commercial hatchery. Chicks used in this study had uniform initial live body weight (44.31g ±0.90). The chicks were randomly allotted to 9 pens (1mx1m) in groups of 10 chicks in a pen. The chicks were divided into three dietary treatments; each group was replicated three times. The birds were fed on starter and finisher experimental diets containing vegetable oil (A), hydrogenated vegetable oil (B) and beef tallow (C). At the end of the experiment (42 days), 2 birds per replicate were randomly selected for carcass characteristics and internal organs evaluation. The results revealed that different sources of fat had no significant (p≥0.05) effect on live performance parameters during different growth phases. However, body weight gain during starter phase (0-3 weeks), was significantly (p≤0.05) higher for birds fed dietary hydrogenated vegetable oil and beef tallow versus those fed vegetable oil. During the finisher phase (4-6 weeks), broilers fed hydrogenated vegetable oil grew faster by 13.9 and 12.0% versus those fed vegetable oil and beef tallow, respectively. In addition, FCR and PER of broilers fed dietary hydrogenated vegetable oil were improved by 12.3 and 12.4%, respectively as compared with those on dietary beef tallow.
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    Effect of Choline Chloride Supplementation on Broiler Chicks Fed Leucaena leucocephala Seeds
    (2011) Mohamed Elamin Ahmed; Khadiga Abbas Abdelati
    Abstract: 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
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    Effect of EDTA Supplementation on Broiler Chicks Fed Leucaena Leucocephala Seeds
    (2008) Mohamed Elamin Ahmed; Khadiga Abbas Abdelati
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    Effect of feeding graded levels of ginger on performance and carcass characteristics of broiler chicks
    (2017) Tamador Ali Eltayb Algam; Mohamed Elamin Ahmed
    An experiment was conducted to determine the effect of ginger root powder additives on growth performance and carcass characteristics of broiler chicks. One hundred and sixty unsexed one day-old (Ross308) broiler chicks were used in this study. Ad libitum feeding system was applied during the two rearing periods, starter period for 3weeks and finisher period for other 3weeks. The broiler chicks were randomly divided into four groups, each represented a treatment (40 birds/treatment) with 4 replicates in a completely randomized design. Four experimental rations were formulated to meet requirement for essential nutrients for broiler chicks according to NRC (1994) recommendation. These rations contain four graded levels of ginger root powder 0%, 0.25%, 0.50% and 0.75%. The experiment lasted for six weeks. Results showed no significant (P≥0.05) differences in overall feed intake, live body weight and weight gain among all dietary treatments. Birds fed on 0.50% ginger showed significant (P≤0.05) deterioration in feed conversion ratio FCR and protein efficiency ratio PER during finisher and overall period when compared with control. However, birds fed on 0.25 and 0.75% were not significantly (P≥0.05) different versus control. Dietary treatments had no significant (P≥0.05) effect on most carcass characteristics and internal organs. The results showed that the
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    Effects of Dietary Levels of Methionine on Broiler Performance and Carcass Characteristics
    (2011) Mohamed Elamin Ahmed; Talha E. Abbas
    Abstract: The present experiment was carried out to determine the effect of dietary methionine levels higher than NRC recommendation on broiler performance and carcass traits. Four dietary levels of methionine 0, 100, 120 and 130% of NRC recommendation were used. Dietary levels of methionine, expressed as percentage of NRC recommendations, significantly (p<0.05) affected feed intake, Feed Conversion Ratio (FCR) and Protein Efficiency Ratio (PER). Feed intake was numerically improved with 110 and 130% of NRC methionine, but was not improved by 120% NRC methionine. Body weight gain was significantly (p<0.05) improved by 110 and 130% of NRC methionine compared to the control. The broiler chicks on methionine higher than NRC showed significant (p<0.05) increase in absolute and relative weight of breast and significant (p<0.05) decrease in abdominal fat.
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    Poultry meat quality and welfare as affected by organic production system
    (2015) Talha ELsadig Abbas; Mohamed Elamin Ahmed
    Abstract: Most of consumers preferring organic food accompanied emerge of environmental awareness in the last decades. Organic production system is considered as an important solution for the environment problems because it improves sustainable agriculture by using organic compounds and avoiding synthetic chemical ones, restricting intensive production and making the entire chain of production under control. Therefore, it is encouraged and supported by environmental protection agencies in spite of the higher production cost of organic production compounds. Due to its higher production cost most producers prefer intensive systems because they focus on reducing cost and increasing production regardless of environmental degradation. Organic poultry system usually mentioned with free-range system and poultry welfare. That is because all organic systems are free-range. Organic system gets a lot of attention of animal welfare organizations because it assists birds to express normal behavior by offering plenty space. Organic or free-range system by some modifications and developing of the system regarding good management of its environment in addition to establishment of biosecurity measures it could considered as a suitable system for human, poultry and environment rather than intensive system because it achieves human health by avoiding dangerous remainders in food such as chemical residues, and for poultry by offering good welfare and health, and also to environment by improving sustainable agriculture.
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