Еconomic analysis of meat production from two types of Domestic quails

H. Lukanov1*, I. Pavlova2

1Department of Animal Science – monogastric and other animals, Faculty of Agriculture, Trakia University,

6000 Stara Zagora, Bulgaria

2Department of General livestock breeding, Faculty of Veterinary medicine, Trakia University,

6000 Stara Zagora, Bulgaria

(Manuscript received 3 March 2019; accepted for publication 17 April 2020)

Abstract. There are two types of Japanese quails, reared in Europe – dual-purpose and meat. The aim of the present study was to made an economic analysis of fattening quails from the dual-purpose and heavy production types. Three groups were formed – group 1 (dual-purpose), groups 2 and 3 (heavy type), reared in cages. After quails sexing on the 16th day of age, there were formed six subgroups: 1m, 1f, 2m, 2f, 3m and 3f. Fattening period lasted until 35 days of age. For revenues calculation produced meat and edible offal data per m2, were used. Costs calculation include consumed feed for the period, day-old quail, and other costs. The main production costs were associated with feed and day-old quails: from 80.3 and 82.6% of all costs in the studied groups. The anticipated revenues from produce in group 2 were 10 EUR/m2 higher than those in group 1, and for group 3 – 10.21 EUR/m2 higher than group А. The results indicate that meat type quails fattening is the most economically efficient in quail meat production. Producing quail edible offal is still not developed but could be beneficial for efficiency of quail fattening small farms.

Meat quality traits in Japanese quails with regard to storage conditions and duration

P. Vasileva, H. Lukanov*, A. Genchev

Department of Animal Science, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria

Abstract. In the last decades the public perception about nutrition and food quality has witnessed a turning point on a global scale. There is an exceptional demand for meat and meat products from gallinaceous birds due to their high dietetic properties and low cost. Apart from the popular broiler chickens and turkey poults, meat-type quails have occupied a greater niche on the market during the last twenty years. Quails are characterised by good slaughter traits, excellent feed conversion rate and weight gain, and a valuable game-type meat. Quail meat is distinguished by excellent nutritional properties. It is rich in protein, with excellent amino acid balance, specific game flavour, relatively low fat content with greater share of unsaturated fatty acids. The study was performed with 40 sexually mature male and female Japanese quails from the Pharaoh meat-type breed, fattened until 35 days of age. Meat pH, meat colour according to the CIE L*а*b* colour system and water holding capacity (WHC) of M. pectoralis superficialis, М. pectoralis profundus and M. femorotibialis were determined on post slaughter minute 30, hours 4, 24, 48 and 72 as well as after defrosting of carcasses.The curves of meat pH reduction of the studied muscles were almost identical, and most substantial changes have occurred during the first 24 hours. Over the 72-hour storage, WHC of М. pectoralis profundus decreased at the highest extent. After freezing and thawing of meat, water loss decreased dramatically. Over the 72-hour period of cold storage, colour coordinates of M. pectoralis superficialis were the most stable, and the colour difference (∆Е*) – with the lowest values. Freezing resulted in lower ∆Е* of pectoral muscles and in increased colour difference in leg muscles.

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Fertility and hatchability of Japanese quail eggs under semi arid conditions in Nigeria

A. Raji1*, S. Mbap2, G. Mohammed1, I. Kwari1

1Department of Animal Science, University of Maiduguri, Maiduguri, Nigeria
2Animal Production Programme, Abubakar Tafawa Balewa University, Bauchi, Nigeria

Abstract. Some factors affecting the fertility and hatchability of Japanese quail eggs were studied at the Poultry Unit of the University of Maiduguri, Livestock Teaching and Research Farm. The mean values of fertility, hatchability of total and fertile eggs set, early, mid and late embryo mortalities were 74.33, 51.35, 69.09, 10.25, 7.57 and 12.30% respectively. Fertility was highest (84.92%) in the dry cold, least (35.58%) in the dry hot with wet season (80.75%) being intermediate. Similarly, hatchability of total and fertile eggs set were 67.18 and 79.11% in the dry cold, 14.11 and 39.66% in the dry hot and 46.86 and 58.03% in the wet season. Younger quails (≤ 10 and 11 – 22 weeks) had higher fertility and hatchability than older ones (23 – 34 and 35 – 52 weeks). Early embryo mortality also increased with age. Fertility and hatchability of eggs from caged birds was 89.54 and 62.34% as compared to 54.93 and 37.35% from deep litter reared birds and hatchability of fertile eggs was 69.63 and 67.96% respectively. Fertility and hatchability was highest (92.15 and 71.48%) for birds of ratio 1:3 and least for 1:5 (19.60 and 10%). Breeders weighing 181 – 200 g had the highest hatchability (79.22%) and ≤140 g the least (60.83%). In contrast, breeder’s ≤ 140 g had the highest late embryo mortality (20%) and 141 – 160 g the least (9.67%). Light brown quails had lower hatchability of total and fertile eggs (23.71% and 35.71%) as compared to wild type or normal colored ones (52.04% and 69.84%). Light brown, however, had higher (P<0.05) early and late embryo mortalities (21.43% and 35.71%) than wild type (10.0% and 11.77%). It can be concluded from this study that season, production system, flock age, mating ratio, color and breeder weight affects the fertility and hatchability of Japanese quail eggs. Thus, these factors have to be considered when raising breeders and collecting eggs for hatching.

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