Influence of european quail breeders age on egg quality, incubation, fertility and progeny performance (original) (raw)
Related papers
Comparative Study of Hatchability and Fertility Rate Among Local Quails
IRAQI JOURNAL OF AGRICULTURAL SCIENCES, 2020
An experiment was conducted to evaluate fertility, hatchability, egg weight and egg production traits from three different lines of local quails. A total number of 945 eggs (334, 321 and 290 for desert, brown and white, respectively), from 20 weeks of age were used in the study. White quail significantly (P≤0.05) produce higher egg weight (12.79 ± 0.08 g), chicks' weight (8.89± 0.02 g), percentage of mortality (2.34 ± 0.70 %) and Hen-day egg production (79.33 ± 0.98 %) comparing with other local quails. While local brown quail have significantly (P≤0.05) higher percentages of fertility and hatchability which averaged 79.11 and 86.80%, respectively. The higher total number of egg and low mortality percentage (0.93 ± 0.40 %) were recorded for desert local quail. The significant positive correlation (P≤0.001) were observed between the eggs weight and chick weight, fertility and hatchability, eggs weight and hatchability were arrived 0.276, 0.180 and 0.872, respectively. But non si...
Dynamic of Reproductive Qualities of Japanese Quails
An experiment was conducted to evaluate the differences of reproductive quality of Japanese quail different origin. Meat quail, obtained from golden giant, showed the highest egglaying and yield the best incubation result. Analysis of the dynamics of quail egg-laying on 2nd-week period, showed the advent of peak production and its duration depended on the origin and direction of poultry production. Meat and egg quail of group 1 had a maximum, ranging from 65.0-71.4 %, production at the age of 20-30 weeks, meat quail had the highest egg-laying and was shifted to an earlier age. Thus, in group 2 quail egg-laying at level of 82.9-83.6% observed from 14 to 18 weeks of age. Subsequently, up to 24 weeks, egg production declined, but remained at a high level-72,9-77,9%. The lowest peak egg production (57.9-62.9%) was in quail breed Pharaoh. Morphological analysis of eggs was carried out in the beginning, middle and end of the production period of quail at 9, 21 and 32 weeks of age. The thickness of the egg shell of quail in group 1 was the highest-192.2 microns, 10.9 and 4.2% (P> 0.95) compared with groups 2 and 3, respectively. For other morphological parameters of eggs quality significant differences between the groups at the beginning of the laying quail were not observed. In comparison with the morphological analysis of lay eggs, mid-production period in group 1, and the mass ratio of the protein and yolks weight was naturally dropped from 1.95 to 1.62. In quails eggs of groups 2 and 3 protein contained 3.2-3.7% (P> 0.95) were higher than in group 1. In this regard, the relation between protein to yolk was decreased based on age in group 2 from 2 .06 to 1.83, group 3-from 1.86 to 1.81. Incubation of the eggs was carried out at the beginning, middle and at the end of the production period of a bird. At the beginning of egg-laying significant differences in the results between incubation quails of different origin have been identified. As can be noted better trends (92.3%) hatchability in quail group 2, however, the day old hatches (78.9%), this group was in second place due to the relatively low fertility of eggs (85.5%). The lowest results in the day old hatchability (74.1%) and hatchability (83.3%) were obtained in group 3. According to the results of incubation of eggs at the middle of laying quails also revealed no significant differences between the groups. Fertile eggs was within 86.2-87.3%, the day old hatched-72.7-75.9%.
Advances in Animal and Veterinary Sciences, 2021
Q uail is one of the poultry species, which has assumed worldwide importance as a laboratory animal due to its extensive use in studies for growth, selection and breeding. Different varieties of quail are nowadays bred in Kurdistan region in Iraq as supply the local markets with testy types of meat and egg particularly for the rural poor (Ahmed and Al-Barzinji, 2020). Quail is popular bird model in numerous fields of research because of its small body size, easily handled, and large number of quails can be reared in limited space. Short generation interval which make it possible to propagate many generations in a year (3-4 generation per year), resistance to many common avian disease and high egg production it has been considered as an excellent laboratory experimental bird, less feed and easy maintenance (Vali et al., 2006; Akpa et al., 2008). Early sexual maturity the females start to lay eggs at six weeks of age, but their full production usually begins at the age of 50 days (about 7 weeks). Females are very prolific because they averagely lay 300 eggs during their entire reproductive period which generally lasts 10-12 months (Kayang et al., 2004; Chełmońska et al., 2008; Alkan et al., 2010). The production of egg is regarded as one of the most performance parameters of laying birds. Despite effective roles of additive genetics on egg production, other factors including age at sexual maturity, bird weight, its nutrition, management and environmental systems might also affect egg production of quail (Daikwo et al., 2014). Breeding and genetic experimentation must be carried out continuously through genetic parameters such as estimation of heritability and repeatability for egg production traits in different strains and/ or breeds were many researchers pointed out that due to differences, there are many variations in these estimates of the genetic research Article Abstract | The current study was aimed to estimate the repeatability of egg weight and egg number characteristics of varieties (desert, brown and white) of local quail at 5, 7, 9, 11 and 13 weeks and overall age of the quail. For this reason, 60 birds (15 males and 45 females) were selected from each variety. The egg numbers and egg weight were summarized on weekly basis for five weeks. The total number of eggs collected for each age was 30 and 150 for the total number of each variety at five different age periods. The results showed that the repeatability estimates for the number of eggs per week was ranged 0.084-0.88 on the desert variety. The repeatability estimates for egg numbers for the five weeks taken together were totally the same among varieties. The repeatability estimates for egg weight at 5 and 13 weeks were generally low in the three varieties of quail and ranged 0.075-0.91. The overall repeatability estimate of egg weight traits highest in desert varieties (0.087) with the least estimate obtained of white varieties (0.081). The results of this study general increase in weight and number of eggs repeatability with different production periods reveals that the less the number records are required to satisfactorily characterize the inherent producing ability for the traits as laying age progressed of each local quail varieties.
World's Veterinary Journal, 2021
Egg quality traits in quail breeders depend on various factors which may influence embryo survival during incubation, affecting the chicks' production and quality. The current study aimed to determine the effect of the laying period on the external and internal quality of the egg, the chemical composition of albumen, yolk, and eggshell as well as the reproductive parameters of quail breeders. A total of 450 quails (Coturnix japonica) obtained from the same hatchery, were reared in a battery cage with a sex ratio of 1 male to 3 females. All the quails were subjected to standard breeding conditions and fed a balanced laying diet. A total of 960 eggs were collected at two different periods of the laying cycle, the beginning period of the laying (BP indicating 10 weeks of quail age) and the peak period of laying (PP showing 20 weeks of quail age). At each laying period, 30 eggs were used to analyze the various parameters of egg quality, and 450 eggs were randomly selected to assess ...
Journal of Innovative Agriculture, 2022
The study assessed the effects of age and egg size on egg shape, egg weight loss, hatchability and growth of Japanese quail. A total of 198 eggs from a breeder flock at 40, 43 and 46 weeks of age were categorised as light, medium and large. Egg shape index was analysed using Histogram with Fit and Groups. Data were subjected to two-way Analysis of Variance using General Linear Model procedure of Minitab (version 18) at 5% Least Significant Difference. Egg weight loss was not different in the younger birds but changed significantly at 46 th week on the 6 th and 12 th days of incubation. Egg weight loss significantly changed between the light and medium-sized eggs. Fertility was significantly affected by egg size. Age and egg size did not change hatchability but significantly affected hatching weight. Chick growth varied significantly at day 14 in eggs collected at week 40. Chick growth significantly increased across the days as egg size increased. The least shape index (77.3%) was recorded in the heavy and medium eggs at 40 and 46 weeks of age. Fertility, hatchability, chick growth and mortality can be affected by age of quails and size of quail eggs.
PRODUCTIVE AND REPRODUCTIVE PERFORMANCE OF QUAIL AT EIGHT GENERATION
Four genotypes of quail Dhakai (D), White (W), Brown (Br) and Black (Bl) quail are being maintained at BLRI with the objectives of increasing the sixth-week body weight through selective breeding and selecting parental birds and breeding them in an assortative plan for the production of 8th generation birds. The parent males and females were maintained in cages for single-pair mating through selective breeding system for producing each generation. A total of 1118-day-old quail chicks comprising 4 types were hatched in one batch to produce eighth generation (G8). The expected genetic progress due to selection for 5th-week body weight was estimated for G8. The genotype had significant (p<0.001) effect on the body weight of quails at 5th week of age. The 5th-week body weight was 132.34±0.88, 123.91±0.52, 104.29±0.76 and 105.36±0.68g, respectively for D, W, Br, and Bl genotypes. The hatchability rate was significantly (p<0.001) higher in D (78.47%) compared to other three genotypes. The egg production percentage up to 24th week of age was 85.27±1.0, 80.22±1.61, 81.07±1.2 and 96.12±1.1, respectively for D, W, Br, and Bl and significantly (p<0.001) differed among all genotypes. Mortality percent among genotypes was statistically non-significant (p>0.05). Sixth-week body weight of males of D, W, Br, and Bl quails were expected to increase by 4.06, 6.36, 2.39, and 3.12g, respectively. While in females of D, W, Br, and Bl quails, the responses were 5.60, 3.61, 4.17, and 3.91g, respectively. Taken together, it may be concluded that Dhakai quail was superior for body weight and Black quail for egg production performance. These findings suggested continuing the quail breeding research for producing a suitable meat-type quail genotype in our country.
Archives Animal Breeding, 2005
This study was undertaken to determine the effects of storage period and egg weight of hatching eggs of Japanese quails on fertility, hatchability results. Eggs were obtained 150 females quails, all at 15 weeks of age. A total of 1942 hatching eggs were separated into 3 groups as lightweight (9.50-10.50 g), medium-weight (10.51-11.50 g), and heavyweight (11.51-12.50 g). Based on storage period, eggs were divided into 5 groups as group 1 (0-3 days), group 2 (4-6 days), group 3 (7-9 days), group 4 (10-12 days), and group 5 (13-15 days). The influence of storage period on hatchability of fertile eggs and early, middle, and late period embryonic mortality rates was found significant (P<0.01). The effect of egg weight on fertility rate, hatchability of fertile eggs and early embryonic mortality was significant (P<0.05, P<0.01). The significant differences between storage period groups were observed in hatchability of fertile eggs. The differences between egg weight groups for fertility rate, hatchability of fertile eggs and early embryonic mortality was significantly higher in light weight group than the other egg weight groups. Results of this study concluded that a 12 day pre-incubation storage of hatching eggs of Japanese quails did not appreciably affect hatching parameters. Use of medium or heavy weight eggs for hatching may reduce early embryonic mortality rate.
Effect of housing system and sex ratio of quails on egg production, fertility and hatchability
Benha Veterinary Medical Journal
The objective of this work was to evaluate the effect of housing system and sex ratio of quails on egg production, fertility and hatchability. A total number of 305 quails of five weeks old were divided into two groups, The first group (96 birds) was housed on battery cages and divided according to sex ratio into 2 equal subgroups of ratio (1: 2) male to females and 1: 3, the second one (209 birds) was housed on floor pens and divided according to sex ratio into 2 equal subgroups of ratio (1: 2) male to females and 1: 3. Eggs were collected daily for one month to estimate egg production percentage of each group. 200 eggs from each group were artificially incubated for detection the effect of housing on fertility, hatchability and embryonic mortality. The obtained results showed that the total egg production percentage was significantly higher (P<0.001) in case of battery cages (63.54±1.68%) than those in floor system (46.67±1.68%), it was higher but not significant at sex ratio 1:3 (57.01±1.68%) than those at 1:2 (53.21±1.68%). The fertility percentage was significantly higher (P<0.001) in case of floor pens (80.67±0.75%) than those in battery cages (73.67±0.75%) and significantly higher (P<0.01) at sex ratio 1:2 (79.17±0.75%) than those at 1:3 (75.17±0.75%). The hatchability percentage of total eggs set was higher but not significant in floor pens (52.00±1.89%) than those in battery cages (49.50±1.89%), it was higher but not significant at sex ratio 1:3 (52.00±1.89%) than those at 1:2 (49.50±1.89%). The hatchability percentage of fertile eggs set was significantly higher (P<0.001) in battery cages (70.40±0.90%) than those in floor pens (64.45±0.90%) and significantly higher (P<0.001) at sex ratio 1:3 (70.12±0.90%) than those at 1:2 (64.75±0.90%).
Effects of storage period and egg weight of Japanese quail eggs on
arch-anim-breed.fbn-dummerstorf.de
This study was undertaken to determine the effects of storage period and egg weight of hatching eggs of Japanese quails on fertility, hatchability results. Eggs were obtained 150 females quails, all at 15 weeks of age. A total of 1942 hatching eggs were separated into 3 groups as lightweight (9.50-10.50 g), medium-weight (10.51-11.50 g), and heavyweight (11.51-12.50 g). Based on storage period, eggs were divided into 5 groups as group 1 (0-3 days), group 2 (4-6 days), group 3 (7-9 days), group 4 (10-12 days), and group 5 (13-15 days). The influence of storage period on hatchability of fertile eggs and early, middle, and late period embryonic mortality rates was found significant (P<0.01). The effect of egg weight on fertility rate, hatchability of fertile eggs and early embryonic mortality was significant (P<0.05, P<0.01). The significant differences between storage period groups were observed in hatchability of fertile eggs. The differences between egg weight groups for fertility rate, hatchability of fertile eggs and early embryonic mortality was significantly higher in light weight group than the other egg weight groups. Results of this study concluded that a 12 day pre-incubation storage of hatching eggs of Japanese quails did not appreciably affect hatching parameters. Use of medium or heavy weight eggs for hatching may reduce early embryonic mortality rate.