scholarly journals Kars İli Yetiştirici Koşullarındaki Kazların (Anser anser) Yumurta Verimi, Kuluçka, Büyüme, Kesim ve Karkas Özellikleri (I. Yumurta Verimi ve Kuluçka Özellikleri)

2019 ◽  
Vol 7 (3) ◽  
pp. 543 ◽  
Author(s):  
Kadir Önk ◽  
Turgut Kırmızıbayrak
Keyword(s):  
Maternal Age ◽  
Egg Production ◽  
Shape Index ◽  
Fertility Rate ◽  
Egg Laying ◽  
Hatching Rate ◽  
Anser Anser ◽  
Egg Weight ◽  
Family Enterprises ◽  
Effect Of Age

In order to determine egg production, yield records of 200 mature geese were used from 60 family enterprises. Total 2365 eggs were examined in order to determine the traits of egg yield. While examining mature geese to determine egg production and its traits, geese were grouped according to their feather color (white, yellow, black, piebald, and grey) and ages (1, 2, 3, 4, and >4). In determining the hatchability characteristics, age, feather color and egg weight (170.00). The general means of egg production and egg laying period was 12.66 ± 0.07 per geese and 28.61 ± 0.19 per day respectively, While the general means egg weight and egg shape index values were 163.74 ± 0.38 g and 65.78% respectively. The effect of age and feather color groups on egg production and laying period were significant. The general mean of natural hatchability traits of the geese eggs such as fertility rate, hatchability rate, hatching rate, embryonic mortality rate, and mortality in shell rate were found 76.10%, 60.88%, 80.00%, 13.16% and 6.84% respectively. While the effect of feather color on the natural hatching traits was insignificant, the effect of maternal age on fertility rate was significant but the effect on the other properties examined was insignificant. As a result, the egg production and laying period of Turkish domestic geese were lower than those of many goose breeds but egg weight was similar to many goose breeds. It was determined that hatching yield increased as egg weight increased. In terms of egg yield, it was determined that 3-year-old geese were higher than other age geese.

scholarly journals Heterosis effect in hybrid laying hens

2014 ◽  
Vol 30 (2) ◽  
pp. 303-311 ◽  
Author(s):  
P. Hristakieva ◽  
M. Oblakova ◽  
M. Lalev ◽  
N. Mincheva
Keyword(s):  
Sexual Maturity ◽  
Egg Production ◽  
Live Weight ◽  
Egg Laying ◽  
Production Traits ◽  
Egg Weight ◽  
Group V ◽  
Paternal Line ◽  
Group I ◽  
Heterosis Effect

The new original egg laying lines T, P and N selected at the Institute of Agriculture - Stara Zagora were used. Hybrid ?? ? ??, ?? ? ?? crosses were obtained and used for paternal line. Thereafter, the following breeding schedule of paternal and maternal lines was applied: Group I - (?????)? ?N?; group ?? - (?????)? ?N?; group ??? - ???N?; and group ?V - ???N?. The production traits of original and hybrid birds were recorded: live weight at the age of 8 and 18 weeks, age of sexual maturity in days, 150 days egg production, average egg weight - at 2-week intervals until end of lay; livability, heterosis effect. The live weights of hybrids at 8 and 18 weeks of age were statistically significantly lower compared to original lines. The values of heterosis for this parameter were negative for all four hybrid combinations. The earliest beginning of egg lay occurred in (?????) ? ?N? (162.08 days of age) and ???N? (163.11 days of age). The relative (%) heterosis for age of sexual maturity of studied hybrid combinations had moderate to low negative values. Average egg weights of hybrids were higher and the values of heterosis - positive for all four groups varying from 0.97% to 1.63%. The average 150 days egg production was lower in purebred lines compared to hybrids. The highest average 150 days egg production was determined in ???N? hybrids - 142 eggs. The heterosis effect for egg production in hybrids was significant.

scholarly journals The Effect of Age and Genotype on Quality of Eggs in Brown Egg‑Laying Hybrids

2019 ◽  
Vol 67 (2) ◽  
pp. 407-414 ◽  
Author(s):  
Adam Kraus ◽  
Lukáš Zita
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Shape Index ◽  
Egg Laying ◽  
Average Weight ◽  
Eggshell Thickness ◽  
External Quality ◽  
Technological Value ◽  
Effect Of Age

The aim was to assess the internal and external quality of consumer eggs of egg‑laying hens of two selected genotypes depending on their age. All of these hens were kept in enriched cages. There were compared eggs from Hy‑Line Brown and ISA Brown hens at the age from 36 to 64 weeks. In total, 3840 eggs from 300 hens were evaluated. Quality of eggs was determined by their technological value. Statistically significant interactions (P = 0.001) between age and genotype were found in all evaluated parameters except for the yolk colour (P = 0.044), whereas there was not found interaction (P = 0.072) between age and genotype in eggshell strength. The significant effect of hens’ age was found in all evaluated parameters, with the only exception of the yolk colour. The results showed that the average weight of eggs, eggshell, albumen and yolk increased with the age. Also the eggshell proportion, its colour and yolk index values ​​increased, whereas the egg shape index, eggshell thickness and strength, albumen proportion, Haugh units, the albumen and the yolk index decreased. Statistically significant effect of the genotype was found in all evaluated parameters except for the yolk index. When comparing both genotypes, the eggs from ISA Brown hens had a better quality. The trend of deteriorating egg quality with age was confirmed.

scholarly journals Beyaz Yumurtacı Saf Hatlarda Yumurta Kalitesi Üzerine Yaş ve Kafes Katının Etkisi

2019 ◽  
Vol 7 (sp1) ◽  
pp. 173
Author(s):  
Hasan Eleroğlu
Keyword(s):  
Laying Hens ◽  
White Layer ◽  
Pure Line ◽  
Shape Index ◽  
External Quality ◽  
Egg Weight ◽  
Temperature And Humidity ◽  
Effect Of Age ◽  
Haugh Unit

In this study, the effects of coat difference and breeding age on the internal and external quality of the eggs were investigated in white laying hens in different cages. The eggs obtained from a total of one hundred fifty eggs White layer pure line hens at 24, 28, 32, 36 and 40 weeks of age that housing in individual cages in the Ankara Poultry Research Institute were used. Shape Index, egg weight (g), albumen height (mm), Roche scale, Haugh unit and shell strength (N) values were examined in 438 eggs obtained from these chickens found in these cages which are three tiers as upper, middle and bottom. In addition, temperature and humidity values in the tiers were recorded at 30-minute intervals during the study and then they were analysed. Statistically significant differences were calculated between temperature and humidity values measured in tiers. Although there was no difference between the tiers in terms of shape index and egg weight, the effect of age was significant. The effect of age and tiers difference on albumen height (mm) was insignificant. The Roche scale and shell strength (N) values were significantly influenced by the tier difference and breeding age. In general, it was concluded that the effect of the tier difference on the Haugh unit was insignificant, but the age was found to have an effect on the Haugh unit.

scholarly journals Produksi Telur Ayam Persilangan Merawang dengan Arab

2019 ◽  
Vol 7 (3) ◽  
pp. 120-122
Author(s):  
N. Widayanti ◽  
S. Darwati ◽  
R. Afnan
Keyword(s):  
Egg Production ◽  
Shape Index ◽  
Feed Conversion ◽  
Egg Weight ◽  
Egg Shape

The egg production of local chiken can be increased by crossing of arab and merawang chicken. This study aimed to observed egg production performances of crossing between merawang x merawangarab (M-MA), merawangarab x merawang (MA-M), merawangarab x merawangarab (MA-MA), arabmerawang x arabmerawang (AM-AM), merawangarab x arab (MA-A), and arab x merawangarab (A-MA). Parameters in this study were egg weight, egg shape index, hen day production and feed conversion. The result showed that the egg weight of MA-M chicken was significantly greater (P<0.05). than M-MA, MA-MA, AM-AM, MA-A, and A-MA chicken. The MA-A egg index was significantly larger (P<0.05) than other crossing. Hen day production of M-MA chicken was significantly greater (P<0.05) and feed convertion was significantly efficient (P<0.05) than other crossing. MA hens had better production than other hens.

scholarly journals FEEDING FREQUENCY AND DENSITY OF MICROALGAE PASTE (CHLORELLA VULGARIS) IN THE DIET OF DEKALB UNDER BATTERY CAGE SYSTEM

2021 ◽  
Vol 9 (10) ◽  
pp. 429-437
Author(s):  
Hannah F. Gan ◽  
◽  
Ken N. Falculan ◽  
Keyword(s):  
Chlorella Vulgaris ◽  
Egg Production ◽  
Animal Feed ◽  
Shape Index ◽  
Internal Quality ◽  
Feeding Frequency ◽  
Egg Weight ◽  
Cage System ◽  
Laying Performance

Poultry products are the major source of animal protein for most people throughout the world and egg production is the major index of performance of commercial layer business and the avenue in the potential increase ofincome from the enterprise which focuses onegg yield, weight of eggs, and increasing their quality production to enhance economic performance.Microalgae is certainly an interesting solution, it aims to increase its value as an animal feed additive in new commercial applications. The experimental research was used in this study to evaluate the laying performance and egg quality of DeKalb under two feeding regimen such as feeding density andfrequency of microalgae paste Chlorella vulgaris under battery type cage system. The experiment was conducted in acompletely randomized designwith a period of 30 days with 81 Dekalb of the same age. The experimental diet used were commercial feeds,microalgae paste and feeding frequencies of 4 times, 3 times and 2 times.Egg characteristics such as total number of eggs, egg weight (g), egg length (mm), egg width (mm) and shape index (%) were computed based on the data from feeding frequency and density. The costs of feeds and price of grown Dekalb and some material used were used in the computation of return on investment. Based on the result, the effect on the external quality of eggs fed under different feeding densities and frequencies on egg production, egg width, egg weight, egg length and shape index resulted to not significantthe null hypothesis was accepted. The internal quality, the effect of different feeding densities on albumen height, albumen weight and yolk width also statistically not significant. Supplementation of microalgae Chlorella vulgaris on hen diet can be included as a dietary supplement for laying hens up to 80% of the diet to produce quality eggs.

scholarly journals PENGARUH WARNA CAHAYA LAMPU TERHADAP PRODUKSI TELUR BURUNG PUYUH ( Coturnix coturnix japonica )

ZOOTEC ◽  
2017 ◽  
Vol 37 (2) ◽  
pp. 224
Author(s):  
Jimmy Sangi ◽  
J. L.P Saerang ◽  
F.J Nangoy ◽  
J Laihat
Keyword(s):  
Egg Production ◽  
Egg Laying ◽  
Coturnix Japonica ◽  
Feed Consumption ◽  
Coturnix Coturnix Japonica ◽  
Light Bulb ◽  
Egg Weight ◽  
Coturnix Coturnix ◽  
Randomized Design ◽  
Bulb Color

EFFECT OF LIGHT BULB COLOR ON EGG PRODUCTION OF QUAILS  (Coturnix Coturnix japonica). The present study was conducted to determine the effect of different color of light bulbs on egg production of Quails (Coturnix Coturnix japonica).  The trial was conducted for seven weeks during the egg laying period. A Completely Randomized Design (CRD) with 4 treatments and 5 replications was used to as experimental design. Treatments were formulated using 5 different light bulb colors, as follow:  R0 = no color (transparent) light bulb, R1 = yellow color light bulb; R2 = green color light bulb, and R3 = red color light bulb. The variables measured were: feed consumption, egg production, and egg weight. Research results showed that treatment did not significantly (P > 0.05) affect daily feed consumption, egg production, and egg weight. It can be concluded that color differences (transparent, yellow, green, and red) in lighting can be used interchangeably in Quail egg production purposes.Keywords: Light bulb color, Quail, feed consumption, egg production, egg weight

scholarly journals Effect of Ambient Temperature on the Performance of Shaver Brown Hens in Hot Humid Environment

2019 ◽  
pp. 1-10
Author(s):  
A. O. Ani ◽  
M. O. Okpara
Keyword(s):  
Ambient Temperature ◽  
Egg Production ◽  
Shape Index ◽  
Metabolizable Energy ◽  
Effect Of Temperature ◽  
Crude Fibre ◽  
Egg Weight ◽  
Humid Environment ◽  
Egg Shape ◽  
Egg Shell

The effect of temperature on the performance of Shaver brown hens in the hot humid environment was investigated using seventy-five Shaver brown hens in their 14th week of lay. Each hen was housed in individual battery cage and fed daily with 125 g of commercial layers mash containing 16.5% crude protein, 2650 kcal/kg metabolizable energy, 4% crude fat, 6.5% crude fibre, 3.6% calcium and 0.4% phosphorus for 10 weeks. Water was supplied ad libitum to the birds. Eggs were collected daily and recorded for each hen. Data were collected on average daily feed intake(ADFI),  egg weight, eggshell weight, egg shell thickness, egg shape index, albumin height, yolk height, albumin index, yolk index, haugh unit and hen day egg production. Results showed that ADFI, hen day egg production, egg shape index, albumin height, yolk height, yolk index and Haugh units were significantly (P < 0.05) decreased with increase in ambient temperature. However, high ambient temperature did not have significant (P > 0.05) effect on egg weight, eggshell thickness and albumin index. Based on the results obtained in the study, it was concluded that ambient temperature had an effect on the performance of Shaver brown hens in the humid tropics.

scholarly journals Breeding for the improvement of indigenous chickens of Bangladesh: performance of foundation stock

2017 ◽  
Vol 3 (1) ◽  
pp. 80-87
Author(s):  
Shakila Faruque ◽  
AKFH Bhuiyan ◽  
Md Yousuf Ali ◽  
Ziaul Faruque Joy
Keyword(s):  
Body Weight ◽  
Egg Production ◽  
Reproductive Traits ◽  
Shape Index ◽  
Daily Weight Gain ◽  
Stock Selection ◽  
Indigenous Chicken ◽  
Egg Weight ◽  
Dressing Percentage ◽  
Foundation Stock

Selection is one of the vital tools for improving the indigenous chicken genetic resources. A total of 1585-day-old chicks comprising of 3 types of chicken namely Naked Neck (NN), Hilly (H) and Non-descript Deshi (ND) were hatched for this study to form foundation stock. Improvement target of egg weight was to increase by 1g and improvement target of egg production rate was to increase by 2 % per generation. In foundation stock, selection was practiced at 40-week of age, on the basis of an index comprising the parameters of age at first egg (ASM), body weight(BW), egg production(EP) and egg weight(EW). Data were analyzed in CRD by General Linear Model (GLM) Univariate Procedure. Significantly highest fertility (82.71%) and hatchability (82.20%) were found in ND genotype. Significantly (P<0.001) highest body weight of day-old chicks and daily weight gain was found in H genotype than other two genotypes. There was a non-significant (P>0.05) variation in FCR among the native chicken genotypes. NN genotype (3.46%) had non-significantly (?2 = 3.62; P > 0.05) higher chick mortality than ND (1.63%) and H (2.11%) at brooding period (0-4 weeks). Significantly (P<0.01) higher dressing percentage was found in NN (64.58) genotype than ND (60.26) and H (61.70) genotypes. Non-significantly higher egg production in selected group was found in H (70) genotype than ND (68) and NN (67) genotypes. Significantly (P<0.001) highest shape index and Haugh unit were found in H and ND genotypes, respectively. As a result of selection, egg production is expected to improve by 0.562, 0.932 and 0.755%, respectively for ND, H and NN genotypes. In terms of reproductive traits ND was superior, in terms of productive traits H genotype was superior and in terms of dressing percentage and breaking strength NN genotype was superior. These findings of the study also give an impetus for continuing the research for more generations to fulfill the objectives of the long-term programme.Asian J. Med. Biol. Res. March 2017, 3(1): 80-87

Effect of constant photoperiods on the laying performance of broiler breeders allowed conventional or accelerated growth

2005 ◽  
Vol 143 (1) ◽  
pp. 97-108 ◽  
Author(s):  
P. D. LEWIS ◽  
D. BACKHOUSE ◽  
R. M. GOUS
Keyword(s):  
Body Weight ◽  
Sexual Development ◽  
Sexual Maturity ◽  
Egg Production ◽  
Egg Laying ◽  
Broiler Breeders ◽  
Egg Weight ◽  
Laying Performance ◽  
Body Weights ◽  
Accelerated Growth

An experiment was conducted at the University of KwaZulu–Natal to assess the effect of constant photoperiods on sexual maturity and egg-laying performance in broiler breeders given two levels of control-feeding during the rearing phase. Cobb broiler breeder females were grown to reach 2·1 kg body weight at 17 or 21 weeks, and maintained on 10, 11, 12, 13, 14 or 16-h photoperiods from 2 days to 68 weeks of age. There were no significant interactions between photoperiod and growth rate for any production parameter. The time required reaching 2·1 kg increased proportionally with photoperiod but, because of delayed sexual development, birds on longer photoperiods consumed more feed to, and were heavier at, sexual maturity than shorter daylengths. The longer-photoperiod birds also had inferior rates of lay in the first half of the cycle, but superior in the second, which, together with the photoperiodic effects on maturity, resulted in birds on 11, 13 or 14 h producing most eggs to 68 weeks, and those on 16 h fewest. It is possible that the pattern of egg production was due to some of the birds on [ges ]13-h photoperiods becoming photorefractory, having a mid-cycle pause, and then spontaneously resuming egg production in the latter half of the cycle. However, a hinge-analysis of current and other data to the more usual depletion age of 60 weeks showed that the combined effects of photoperiod on sexual maturity and egg production resulted in constant 10-h birds producing the highest number of eggs, with numbers decreasing by 3·6 eggs/h of photoperiod above the hinge and 7·8 eggs/h of photoperiod below it. Mean egg weight increased by 0·4 g/h of photoperiod, but the proportion of abnormally large and floor eggs and the incidence of mortality were unaffected by daylength. For each photoperiod, accelerated growth resulted in body weights being heavier than controls at sexual maturity, despite the mean age at maturity being 10 days earlier for the faster-growing birds. Body weights for the two growth groups were not significantly different at 68 weeks. Faster-growth birds consumed 1 kg less feed to 2·1 kg body weight, but 1·3 kg more feed to sexual maturity and 2·7 kg more to 68 weeks, and produced 6 more eggs than, but had similar patterns of egg production to, the conventionally managed controls. Mean egg weight, the proportion of floor eggs and the incidence of mortality were similar for both groups. Notwithstanding that the overall production of abnormally large eggs was low (1·1 eggs per bird); the faster-growing birds produced significantly more than the controls. Egg weight was positively influenced by age at sexual maturity, body weight at sexual maturity and photoperiod, but was unaffected by rate of growth to 2·1 kg per se.These findings show that there are differences between broiler breeders and egg-type pullets in their response to constant photoperiods. It is likely that the factors responsible for these differences, particularly in terms of sexual development, are the exhibition of photorefractoriness by, and the retardational effects of controlled feeding on, broiler breeders.

The effect of different levels of management on the assessment of differences between varieties of chickens. II. Egg production, mortality and egg weight

1964 ◽  
Vol 6 (2) ◽  
pp. 195-205 ◽  
Author(s):  
J. C. Bowman ◽  
J. C. Powell
Keyword(s):  
Egg Production ◽  
Genetic Correlations ◽  
Egg Laying ◽  
Components Of Variance ◽  
Egg Weight ◽  
The Mean ◽  
Intensive Investigation ◽  
Optimum Management ◽  
Maximum Expression ◽  
Different Levels

1. The data relating to 16 multi-location trials involving several varieties of egg-laying chickens per trial have been analysed to obtain estimates of variety × location (genotype-environment) interactions for rearing and laying mortality, hen-month and hen-housed egg production and 32-week egg weight. Significant interactions were found in about a third of the trials for all five traits though in only two cases did the interaction variance account for more than 20% of the total variance.2. Genetic correlations for varieties between locations have been calculated as 0·49 for rearing mortality, 0·50 for laying mortality, 0·72 for hen-month production, 0·76 for hen-housed production and 0·91 for egg weight. These are in close agreement with previous published estimates.3. The between-and within-variety components of variance have been calculated for each trait on each location separately. The regressions within trials and pooled values of the components on the mean level of all varieties on the location have been calculated. For hen-month production the pooled regres-son of the within-variety component on mean was negative, whilst for all other traits the pooled regressions were positive. The pooled regressions of the between-variety components on mean were all positive. It is suggested that this information indicates that comparison of varieties for single traits should be carried out on locations favourable for maximum expression of the trait. The difficulties which variety comparisons, for several traits having different optimum management regimes, would cause and the need for a more intensive investigation of the conditions conducive to genotype-environment interactions are stressed.

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