An Evaluation of Different Quail Varieties for the Heat Stress Resistance

The aim of this study was to evaluate some biochemical variables under heat-stressed Japanese quail that have different plumage colors for detecting that variety of quail better adapted to heat stress. A total of 100 birds were used in this study. The 25 birds that belong to each four plumage color group were placed in 5-tiered including 3 compartments in each tier plastic cages with subdivided 5 repetitions according to their initial body weights. The statistical significance occurred in LDH (P<0.01). The highest LDH level was found in the Recessive white variety (25.43 mmol/L), followed by Wild type (23.78 mmol/L), Golden (12.87 mmol/L), and Tuxedo (12.71 mmol/L), respectively. The Recessive white group was different from the Golden and Tuxedo groups. According to the results of the current study, there was no significant difference was observed between the four different color varieties of Japanese quail regarding heat stress. However, when LDH is taken into account, it can be thought that the white color may be more sensitive to stress. In order to clarify exactly this situation, more studies that are detailed such as yield performance can be conducted on different quail species.

Evaluation of the Level of Biosecurity Measures Adopted in Broiler Farms Based on Manure Bacterial Load Examination in Khartoum State, Sudan

This study was conducted to evaluate the level of adopted biosecurity measures in broiler farms based on manure bacterial load examination in Khartoum State, Sudan. To achieve the goal, a cross sectional study was conducted. Data and manure samples were collected from January to September 2018 from 12 close system broiler farms according to Non-probability Multistage Cluster Sampling Method in Khartoum, Khartoum North (Bahri), and Omdurman localities (4 for each). A standardized questionnaire was also conducted and used for data collection. A total of 12 manure samples were collected from one chosen broiler house in each farm to check the TVCs. All collected Data were subjected to descriptive and analytical statistic such as Chi square and ANOVA using SPSS. The Results of external biosecurity measures revealed that half of the total farms examined (50%) were at a distance between 500 m to 1km from the nearest poultry farm. The same percentage was obtained for no manure spreading from neighboring farms. However, frequent passage of other farms vehicles via near public road was reported in 50% of participating farms. The internal biosecurity results showed that all the examined farms (100%) prohibiting manure storage beside 75.0% of them remove the manure through the dirty area. Furthermore, workers protective wearing when contact waste and hygiene practicing after removing waste sometimes practiced by 75.0% of the participant farms. The mean of bacterial TVCs in manure samples was found below the cut-off level (6.01±0.78 cfu/g) with 95% confidence intervals of 4.48-7.37, 5.20-6.79, and 4.39-7.84 and mean TVC of 5.93±0.90, 6.00±0.50, and 6.11±1.08 cfu/g for Khartoum, Khartoum North, and Omdorman, respectively. No significant difference was obtained for log means of bacterial TVCs and farm location (F value=0.047 and P-value=0.955). In conclusion, despite that the bacterial counts in manure samples were below the cut-off level, poor hygienic practices were detected. Formulation of suitable procedures and regulations by official authorities for implementing biosecurity measures is recommended.

The Effects of In-Ovo Injected D-Glucose Monohydrate and Ascorbic Acid on Hatchability, Body Weight and Early Post-Hatch Performance of Geese

The aim of the current study was to determine the impact of in-ovo injected D-Glucose monohydrate and ascorbic acid on hatchability, body weight and early post-hatch performance of geese. The 360 eggs from a 50-wk-old Embden crossbred breeder flock were set in a single-stage incubator with 4 treatments. The experimental treatments were: (1) non-injected Control, (2) Dextrose 24 mg / 0.5 mL, (3) Vitamin C 10 mg / 0.1 mL (4) Dextrose 24 mg / 0.5 mL + Vitamin C 10 mg / 0.1 mL. At 11 and 18 d of incubation, the eggs were injected into the albumen manually under sterile conditions. At 25 d of incubation, the same amount of the agents was injected into the yolk sac of the fertile eggs with the same procedure. The hatchability of the Control and Dextrose + Vitamin C groups were statistically different (P < 0.05). Although there was a statistically insignificant difference, the highest value was recorded in the Dextrose + Vitamin C group on the 25th-day. The hatchling weights were only influenced by the agents. The 25th-day Dextrose + Vitamin C treatment had the greatest values at body weights at hatch. There were no statistical differences by the injection days, agents and interactions regarding body weights at 7th-day post-hatch. In addition, there was no significant impact of different injection sites on both hatchling weight and, body weights of post-hatch 7th-day. It is suggested that the in-ovo injection should administrate on the 25th day of incubation into the yolk sac in goose eggs with a mixture of D-Glucose monohydrate and ascorbic acid.