Guinea fowl is considered a Hungarian poultry species, which adapted a long time ago, with excellent meat quality, very good ability to acclimatise to different conditions, resistance, wild and seeking habits with low costs of keeping, which make guinea fowl one of the best poultry species for natural production. In 2002, the Association of Hungarian Small Animal Breeders for Gene Conservation (MGE) and Institute for Small Animal Research, previously named HaGK-Research Centre for Farm Animal Gene Conservation (KÁTKI) exported the first guinea-fowl population to Vietnam for adaptation study with regards to the indigenous animal genetic conservation. At first, the guinea fowl was experimentally reared in the Poultry Research Centre (POREC), located in the subtropical region of North Vietnam. Following the success of this adaptation experiment, the present study aimed to contribute to the expansion of the old Hungarian guinea fowl to tropical regions in South Vietnam (Dong Nai and the Mekong Delta). During the 13th week rearing period the mortality rate of guinea fowls was lower than 3% in both regions. The average body weight and the feed conversion of guinea fowls recorded in Dong Nai and the Mekong Delta, during the 13rd week were 1269±64g (n=487) vs 1610±64g (n=489; P<0.05) respectively and 3.43 vs 2.92kg feed/kg body weight gain (P<0.001) respectively. In Dong Nai, the egg production reached 71% (1205 eggs/242 hens/week) and hatchability ranged between 31% (61/200) and 72% (495/690). Despite differences of performance between groups, results show successful adaptation of guinea fowls to underprivileged regions of South Vietnam. This study could be the first step for further integrating the Hungarian guinea
The aim of this study was to investigate the adaptation and possible ex situ conservation in a subtropical region of the Partridge coloured Hungarian (PH), a native Hungarian chicken breed, by monitoring and comparing the performance of two PH flocks reared in parallel in Hungary (HU) and Vietnam (VN). The high survival rate (95.0–96.5%), overall productivity and reproductive ability of the VN flock confirmed the adaptation potential of PH chickens to subtropical climates. A relatively good bodyweight (1412 ± 13.8 g) and slaughter yield (75.6 ± 0.02% eviscerated carcass and 28.2 ± 0.12% deboned thigh meat) in male VN birds at 12 weeks of age was obtained. Moreover, it was found that benefits such as the number of eggs (112 eggs/layer in 7 months) and egg mass (6.1 kg/layer) alongside considerably higher fertility (85.9 ± 2.9%) and hatchability (82.0 ± 3.2%) of VN layers could outweigh their reduced egg size. As a result, the study confirms that the adaptation and maintenance of populations in subtropical regions is a promising agro-ecological way to protect native Hungarian chicken breeds and improve their involvement in production.
Phuong et al.: Comparison between Low/Programmable Freezing... 176 examinations used in this research were not able to detect injuries which caused embryonic death during freezing procedure, therefore, despite the seemingly acceptable sperm surviving rate, the ratio of eggs containing a normal embryo in case of slow, programmable frozen-thawed semen artificial insemination was significantly lower than in case of fresh semen artificial insemination (5.88% and 70.46%, while it was 28.37% in case of pellets, p=0.038, Kruskal Wallis ANOVA test).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.