Open Access Short Research Article

The effect of Citric Acid in the Diets of Native Chicken on Growth Performance and Carcass Traits

Nguyen Thuy Linh, Nguyen Hoang Qui

Asian Journal of Research in Animal and Veterinary Sciences, Page 1-7

Aims: The study used native crossbred chickens to evaluate the effects of citric acid on growth performance and carcass traits of these chickens

Study Design: The experiment was a completely randomized design.

Place and Duration of Study: School of Agriculture and Aquaculture's experimental farm, Tra Vinh University, between December 2020 to March 2021 (4 months).

Methodology: This study was a completely randomized design with four diets which were 0%, 0.15%, 0.25%, and 0.5% (CT, CT0.15, CT0.25, and CT0.50 respectively) of citric acid and three replicates per each diet. A total of 10 birds was allotted in each group with a 1:1 sex ratio. Feed and water were given ad libitum to the chickens. Data were collected daily throughout the experiment. At the end of the trial, the chickens were butchered to ascertain the weight of the carcass, breast, thigh, and internal organs.

Results: The results showed that chickens in the diet with 0.5% citric acid had a great performance, live weight was higher than other treatments with 632.1 g/bird at 8 weeks of age, daily weight gain, feed intake showed better performance as well. There was a linear feed conversion ratio when citric acid increased from 0 - 0.5% in the diets. Carcass weight, breast weight, and thigh weight were significantly different between treatments (P < 0.05). However, there were not significantly different between carcass, breast, thigh percentage, and other edible organs’ weight.

Conclusion: It can be concluded that adding citric acid with the amount of 0.50% in the diet improved growth performance and some carcass characteristics such as thigh weight and breast weight of the chickens.

Open Access Original Research Article

Comparative Study of Semen Collection from Rabbits Using Locally Assembled and Conventional Artificial Vaginas

P. E. Asibor, J. M. Omoyakhi, O. O. Musa

Asian Journal of Research in Animal and Veterinary Sciences, Page 8-15

Artificial insemination has been used in time past to improve the reproductive performance of animals and has a great potential in rabbit production. The cost of purchasing sophisticated artificial vagina is a challenge for rabbit producers in developing countries like Nigeria, therefore, this study was carried out to compare the quality of semen collected using the Locally-assembled Artificial Vagina (LAV) with that collected using the Conventional Artificial Vagina (CAV). 3 matured bucks were housed separately in a Completely Randomized Design and each type of Artificial Vagina (AV) was used to collect 4 semen samples from each buck over a period of 4 weeks. A total of 24 samples were collected and analysed. The results showed that the viscosity and odour of all samples are the same, while the colour was Slightly yellowish white and milkfish white for LAV and CAV respectively. It was observed that the Liquefaction time, pH and Massal Motility of semen collected with both AVs were not significantly different (p≥0.05), but the Volume, Individual Motility, Sperm Vitality and Concentration of the semen collected, were significantly higher (p <0.05) for CAV at 0.47ml, 66.33%, 71.33% and 455.18 x 106 respectively. Although, there was a little difference in the quality of both semen, the semen collected using LAV are within acceptable range. It was concluded that unsophisticated LAVs made from cheap and available materials, is a good option for local rabbit breeders to collect semen from rabbits in an AI process, in order to save cost for rabbit farmers in developing countries.