Effects of clove powder supplementation on performance, blood biochemistry, and immune responses in broiler chickens

The goal of this study was to evaluate the effects of clove (Syzygium aromaticum) supplementation levels on performance, blood parameters, and immune response of broilers. A total of 336 one-day-old broilers were assigned to one of eight treatments: 1% to 6% clove supplementation levels, a positive control (vaccinated) and a negative control (unvaccinated). Bodyweight gain, feed intake, feed conversion ratio, serum protein profile, and immune responses were measured weekly. Lymphoid organs were weighed at 21 and 35 days. Levels of dietary clove between 2% and 6% supplementation resulted in a gradual decrease in weight gain and feed intake with an increase in feed conversion ratio at two and three weeks, whereas those that received 4% to 6% supplementation had reduced weight gain and the 3% to 6% supplemented animals consumed the least amount of feed at four and five weeks. High levels of clove supplementation (4%, 5%, and 6%) resulted in reduced total serum protein and albumin and the greatest activity of aspartate aminotransferase at 35 days. Antibodies to viruses against which the birds had been vaccinated were not affected by different levels of clove supplementation compared with the positive control. However, they were increased in birds in the negative control group without vaccination. Relative weights of lymphoid organs were not affected by any treatments at 21 and 35 days. These results indicate that clove supplementation at levels greater than 2% can lead to negative effects on performance without improving the health of the liver and immune responsiveness of broilers.Keywords: Gallus domesticus, serum biochemical, enzymes, antibody titers, lymphoid organs

ANTECEDENTS FACTORS AFFECTING CYBERBULLYING RISKS: A STUDY IN JORDANIAN SECONDARY SCHOOLS

Purpose of the study: In this study, the primary aim is to identify the effects of self-efficacy and cyber bullying knowledge on cyber bullying risks among Jordanian students. Methodology: The population of the study specifically comprised of Jordanian students in Irbid students, with the study sample being 153 students. Accordingly, a questionnaire was developed and disseminated among the students to gather data for the achievement of the study objectives. The study used Structural Equation Modeling (SEM). The study also employed AMOS 23.0 and SPSS 25.0 software in SEM. Main Findings: self-efficacy and cyber bullying knowledge factors do have significant effects on cyber bullying risks. Applications of this study: This research can be used for academic purposes for universities, lecturers of education and management, researchers and undergraduate and postgraduate students. Novelty/Originality of this study: The phenomenon that existed in cyber bullying and referring from various previous research results, the study regarding the cyber bullying was conducted and presented comprehensively and completely. It is necessary examine the effect of self-efficacy and cyber bullying knowledge factors on cyber bullying risks

Bronchial stump reinforcement with an azygous vein flap

Bronchial stump reinforcement has been shown to significantly reduce the incidence of bronchopleural fistulas. Various coverage techniques have been described in the literature. While the azygous vein flap is an easy, safe and effective reinforcement option for right-sided bronchial stumps, the flap is not widely adopted, with little mention in the literature, partly due to surgeons' uneasiness with the technique. In this report, we describe an easy-to-adopt approach to azygous vein bronchial reinforcement

Novel thoracoscopic approach to posterior mediastinal goiters: report of two cases

Trans-cervical resection of posterior mediastinal goiters is usually very difficult, requiring a high thoracotomy. Until recently, using conventional video-assisted thoracoscopic surgery to resect such tumors has been technically difficult and unsafe. By virtue of 3 dimensional visualization, greater dexterity, and more accurate dissection, the Da Vinci robot, for the first time, enables a completely minimally invasive approach to the posterior superior mediastinum

Effect of level of inclusion of clove (Syzygium aromaticum) powder in the diet on growth and histological changes in the intestines and livers of broiler chickens

The study was designed to evaluate the effects of different levels of clove (Syzygium aromaticum) powder in the diet on growth performance and histological changes of the livers and intestines of broiler chickens at 21 and 35 days old. Three hundred and thirty-six one-day-old Ross (308) broilers were allocated to eight treatments, namely: NC: negative control and unvaccinated; PC: positive control and vaccinated; and treatments T1, T2, T3, T4, T5 and T6 supplemented with different levels of clove powder (10, 20, 30, 40, 50 and 60 g clove powder/kg of diet, respectively) and all vaccinated. At 21 and 35 days old, eight birds/treatment were weighed, and samples from the livers and intestines were collected to evaluate morphological and histological changes. The results showed that higher levels of clove powder (T3 to T6) resulted in a gradual decrease in the live body weight of the birds at 21 and 35 days old. Relative liver weight increased in T5 and T6 at 35 days, but not at 21 days. A shorter small intestine was recorded in birds that received 50 and 60 g (T5 and T6) clove powder, while the proportional length of small intestinal parts did not show differences among treatments at 21 and 35 days old. The supplementation in the T3 toT6 groups resulted in a gradual decrease in intestinal weight at 21 days, but was not evident at 35 days. Villus height, villus surface area and villus crypt depth showed a gradual decrease from T1 to T6 at 35 days old. Also, gradual loss was recorded of the intestinal epithelium structure by necrotic enteritis on the wall of villi with an increased level of clove powder (< T2). These results indicated that 10 g clove powder per kg diet could be used to improve the growth rate without affecting the health of the liver and intestines of broilers.Keywords: Gallus domesticus, morphology, histomorphometric, digestive system, vaccin

Comparison of avian reoviruses using biochemical, serological and immunological methods

SIGLEAvailable from British Library Document Supply Centre- DSC:DX177474 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Immune-responsiveness and performance of broiler chickens fed black cumin (Nigella Sativa L.) powder

The main objective of this study was to determine the effects of various levels of dietary black cumin seed (BCS) on immune-responsiveness, broiler performance and lymphoid organs’ ratio scores against NDV, IBV and IBDV vaccines. One hundred and sixty-one day-old broiler chicks (Rose 308) were randomly assigned into five groups with three replicates of seven birds each (21 chicks per group) and fed diets supplemented with 0.7%, 1.4%, 2.1% or 2.8% black cumin. All chickens were bled weekly for 35 days post-treatment. Body weights, thymus, bursa and spleen ratio scores were determined at 21 and 35 days while body weight was determined weekly. The results revealed non-significant differences in body weight between all groups compared to the control group. Antibody titers against NDV also exhibited non-significant differences at third, fifth and sixth weeks of the experiment between treated groups while they were significantly different from the control group. At the fourth week, group C showed significantly different antibody titers from other treated groups. However, antibody titers against IBV were significantly different in the fifth and sixth weeks against the control group. Similar results were recorded with IBDV vaccine compared to the control group while group C had significant differences in titers at 4, 5 and 6 weeks post-vaccination. Lymphoid organs, namely thymus, bursa and spleen showed non-significant differences between groups. This study showed that dietary supplement of black cumin seed at the level of 1% or 1.4% would enhance immune responsiveness in broiler chickens