Abstract
Noi chicken is one of the most popular native breeds in the South of Vietnam because their good meat quality and disease resistance. Therefore, although price of their products (eggs and meat) is always high, they are always preferred. However, there have not been many studies on the morphology of this breed yet. In the current study, a total of 355 Noi chickens (164 males and 191 females) at 28 days old were selected and randomly allotted to individual cages until they reached the market weight at 84 days old. During the experiment, Noi broilers were fed ad libitum a diet with 17% crude protein and 3.000 kcal/kg ME produced by GreenFeed Vietnam Joint Stock Company. Average daily gain, feed conversion ratio and some morphological dimensions were recorded at two different stages of age (28-56 and 56-84 days old). Results were demonstrated that (i) significant differences in feed intake (P=0.006), body weight (P=0.019), beak length (P=0.014), thigh length (P=0.004), shank length (P=0.003), breast diameter (P=0.000), and thigh diameter (P=0.001) were found between males and females as well as between different stages; and (ii) body weight and some dimensions will increase rapidly at the first stage. An understanding on these economic traits helps researchers and producers have a more detailed glance on developing of each part of Noi chicken at different stages of age which they are the basic scientific foundation for further studies on this breed.
Highlights
Chicken industry in Vietnam has been developing rapidly and strongly in recent years
Similar to other countries owing native breeds, Vietnamese customers tend to choose the products of these breeds because of their specific quality
Noi is known as one of the native chicken breeds who are easy to raise in different conditions of environment, micro-climate, nutrition, and nursing from rural to urban areas for improving farmers’ income and meals quality as well as sometimes for fighting games
Summary
Chicken industry in Vietnam has been developing rapidly and strongly in recent years. Noi chickens have strong tough muscles, good natural disease resistance and produce delicious meat. This breed is chosen as a potential genetic for the sustainable poultry production system in Vietnam. With the increasing demand of domestic customers, Noi chicken breed needs to be studied in many ways/methods to produce high quality products. It is the reason why this study was subsequently conducted and focused on some indicators of growth performance, feed conversion ratio and morphology, as a basic foundation for further studies on this breed
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