BACKGROUND: Due to the numerous biological effects of nanoparticles, nanotechnology can play a major role in future research areas in the poultry industry. OBJECTIVES: The SNP have antibacterial, antiviral and antifungal properties that are increasingly used in poultry farms. Therefore, the aim of this study was to investigate the effect of SNP on carcass and laying performance, qualitative and quantitative characteristics of eggs, fertility and hatchability in Japanese quail. METHODS: 96 quails including 24 male quails and 72 female quails were assigned to 4 experimental groups with 6 replications in a completely randomized design. The experimental groups consisted of 0 (control), 4, 8, and 12 ppm SNP, which were given to the birds in drinking water. Quantitative and qualitative parameters of eggs and determining the percentage of fertility and hatching were performed on a weekly basis. Also, at the end of the experiment, body weight and relative weight of internal organs were measured. RESULTS: The relative weight of liver and kidney organs increased in the SNP-receiving groups as compared to control (p < 0.05). There was a significant decrease in egg weight in SNP- receiving groups compared with the control group (p < 0.05). The effect of experimental groups on relative yolk weight was not significant. Albumin weight and yolk to albumin ratio increased in two groups of control and 8 ppm SNP, respectively (p < 0.05). Egg thickness and shape index decreased in groups 4, 8, and 12 ppm SNP as compared to control (p < 0.05). However, the effect of different experimental groups on quantitative and qualitative parameters of eggs including eggshell weight, eggshell membrane, and egg volume was not statistically significant. The SNP-receiving groups caused a dramatic increase in fertility rate as compared to control (p < 0.05); furthermore, the increase in hatchability rate in SNP groups was not significant (P>0.05). CONCLUSIONS: The results of the present study showed that the use of 4 and 8 ppm SNP can improve the laying performance, fertility and hatchability rates in Japanese quail.

The purpose of this study is to evaluate the use of Breeding Soundness Examination (BSE) and sperm quality for bull fertility screening by using Brahman bulls. A total of 17 Brahman bulls were sampled from the Department of Veterinary Services’ farm at Pusat Ternakan Haiwan (PTH) Ulu Lepar, Kuantan, Pahang, with age ranging between 2 to 7 years old. All candidates had undergone BSE and sperm quality test. All the data collected were analysed using SPSS software. The average age of the Brahman in this study was 55.06±14.37 months with 36.53±3.21 cm of scrotal diameter. The average libido score recorded for Brahman bulls in this study was 5.35±1.90. The minimum libido score was two (2) while the maximum score was seven (7). For sperm quality traits, the average parameter recorded for Brahman bulls were as follows: 54.41±20.15 % (sperm motility), 62.94±26.94 % (live sperm) and 49.40±8.53 % (normal sperm). The minimum and maximum score for sperm motility was 10 % and 80 %, respectively. For live sperm, the minimum score was 10 % and maximum score was 80 %. Meanwhile, normal sperm had a minimum score of 30 % and a maximum score of 65 %. The bull that fulfilled the requirements of the screening can be assigned as a superior bull for breeding program, thus making fertility screening a useful tool in monitoring potential breeder of the farm.