An Evaluation of Selection Data of Barred Rock-1 and Rhode Island Red-1 Pure Line Laying Hens at the Poultry Research Institute of Ankara

2016 ◽  
Vol 11 (10) ◽  
pp. 643-649
Author(s):  
Huseyin Goger
Keyword(s):  
Rhode Island ◽  
Laying Hens ◽  
Pure Line ◽  
Research Institute

scholarly journals Comparison of Changes in the Plumage and Body Condition, Egg Production, and Mortality of Different Non-Beak-Trimmed Pure Line Laying Hens during the Egg-Laying Period

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 500
Author(s):  
Gábor Milisits ◽  
Sándor Szász ◽  
Tamás Donkó ◽  
Zoltán Budai ◽  
Anita Almási ◽  
...  
Keyword(s):  
Rhode Island ◽  
Body Condition ◽  
Egg Production ◽  
Laying Hens ◽  
Pure Line ◽  
Egg Laying ◽  
The Body ◽  
High Production ◽  
High Production Level ◽  
Selection Of

The experiment was carried out with altogether 1740 non-beak-trimmed laying hens, which originated from Bábolna TETRA Ltd., representing two different types (Rhode Island Red (RIR) and Rhode Island White (RIW)) and four different lines (Lines 1–2: RIR, Lines 3–4: RIW). The plumage and body condition of randomly selected 120 hens (30 hens/line) was examined at 20, 46, and 62 weeks of age. The egg production and the mortality of the sampled hens were recorded daily. Based on the results, it was established that the lines differ clearly in most of the examined traits. It was also pointed out that injurious pecking of the hens resulted not only in damages in the plumage but also in the body condition. The results obviously demonstrated that the highest egg production and the lowest mortality rate were reached by those hens, which had the best plumage and body condition. Because the occurrence of injurious pecking seems to depend on the genetic background, selection of the hens (lines, families, individuals) for calm temperament will be very important in the future in order to maintain the high production level in non-beak-trimmed layer flocks.

scholarly journals Examination of the causes of mortality in non-beak-trimmed pure line laying hens with special regard to aggression

2020 ◽  
Vol 24 (1) ◽  
pp. 67-79
Author(s):  
Zoltán Zomborszky ◽  
Milisits Gábor ◽  
Zoltán Budai ◽  
Sándor Szász ◽  
Olga Pőcze ◽  
...  
Keyword(s):  
Rhode Island ◽  
Genetic Background ◽  
Laying Hens ◽  
Total Mortality ◽  
Pure Line ◽  
Egg Laying ◽  
Frequency Of Occurrence ◽  
Causes Of Mortality ◽  
Mortality Causes ◽  
Half Sibling

The experiment was started with 1,508 Rhode Island Red (RIR) and 1,820 Rhode Island White (RIW) type non-beak-trimmed day-old pullets, which were originated from 58 RIR and 70 RIW different pedigree cocks, respectively. From all of the 128 cocks 26 half sibling offspring were tested. The pure line pullets were raised up to 18 weeks of age in a closed building, in deep litter pens and moved to the laying house and placed into three types of keeping systems [furnished cage, alternative pen (litter and floor) and conventional cage] thereafter. The number of dead birds and the cause of mortality were recorded daily during the whole rearing and egg-laying period, up to 72 weeks of age. During the rearing period the most frequent cause of mortality was wasting, which accounted for nearly 36% of the total mortality. Aggression was responsible for 28.3% of the total mortality. Depending on the type of the pullets (RIR or RIW), differences were observed in the frequency of occurrence of mortality causes. For example, oedema and beak deformation occurred only in the RIR, whereas technological injury and aggression only in the RIW pullets during the rearing period. During the egg-laying period aggression was the most common cause of mortality. Its lowest occurrence was observed in the alternative pens. In both of the examined types there were found cocks, whose offspring died exclusively by aggression, and cocks, whose offspring did not show any loss due to aggression. The ratio of these cocks differed significantly (P<0.05) between the two types examined. Based on the results it was established that the genetic background has significant effect on the mortality caused by aggression in non-beak-trimmed laying hens.

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 Influence of Origin of Laying Hens on the Quality of Their Carcasses and Meat After the First Laying Period

2014 ◽  
Vol 14 (3) ◽  
pp. 685-696 ◽  
Author(s):  
Michał Puchała ◽  
Józefa Krawczyk ◽  
Jolanta Calik
Keyword(s):  
Genetic Resources ◽  
Rhode Island ◽  
New Hampshire ◽  
Broiler Chickens ◽  
Laying Hens ◽  
The Other ◽  
Raw Material ◽  
Breeding Lines ◽  
Dressing Percentage

AbstractThe aim of the study was to assess the quality of carcasses and meat from selected native breeds and breeding lines of hens after using them for laying eggs in terms of their usefulness as raw material in traditional old polish cuisine. hens included in the programme for the protection of genetic resources were the object of this study. they belonged to the following breeds/breeding lines: greenleg partridge (Z-11), rhode Island red (r-11), new hampshire (n-11) and Barred rock (WJ-44) – 30 hens from each line. the hens were kept in a closed hen house under standard raising conditions. eight hens were selected from 56-week-old hens of each line which were subjected to analysis after being slaughtered. as a result of the research conducted, it was found that:– Among the hens under study, heavier layers, i.e. Barred rock (WJ-44), new hampshire (n-11) and rhode Island red (r-11), which are characterized by good muscling and dressing percentage similar to that of broiler chickens, proved to be most suitable for use as meat.– The meat from WJ-44 hens contained most cholesterol and least protein, and the meat from Z-11 birds had the least fat compared to the other lines.– At the end of the laying period, meat and broth from WJ-44, n-11 and r-11 hens obtained better sensory scores than those from the carcasses of Z-11 hens, which makes them an attractive raw material for traditional polish cuisine.

The nitrogen balance of laying hens

1934 ◽  
Vol 24 (4) ◽  
pp. 636-648 ◽  
Author(s):  
J. S. Willcox
Keyword(s):  
Rhode Island ◽  
Nitrogen Balance ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Laying ◽  
Uniform Rate

SummaryA nitrogen balance experiment of ten weeks' duration with two Rhode Island Red laying hens is described.The observed variations in the retention of nitrogen for egg-producing purposes do not appear to be connected with the output of egg nitrogen or with the number of eggs laid in the various egg cycles.The view held by other workers that the nitrogen required for egg production can be largely if not entirely drawn from the food supplied during the laying period is confirmed.The marked storage of nitrogen which has been shown to occur immediately prior to the commencement of egg laying is not repeated during the laying period, and it is suggested that during a period of heavy egg production synthesis of the nitrogenous constituents of the egg proceeds at a fairly uniform rate.

scholarly journals The Association of Response to a Novel Object with Subsequent Performance and Feather Damage in Adult, Cage-Housed, Pure-Bred Rhode Island Red Laying Hens

2008 ◽  
Vol 87 (12) ◽  
pp. 2486-2492 ◽  
Author(s):  
K.A. Uitdehaag ◽  
T.B. Rodenburg ◽  
H. Komen ◽  
B. Kemp ◽  
J.A.M. van Arendonk
Keyword(s):  
Rhode Island ◽  
Laying Hens ◽  
Novel Object ◽  
Subsequent Performance

scholarly journals Genomic analysis of GBS data reveals genes associated with facial pigmentation in Xinyang blue-shelled layers

2020 ◽  
Vol 63 (2) ◽  
pp. 483-491
Author(s):  
Haobin Hou ◽  
Xiaoliang Wang ◽  
Caiyun Zhang ◽  
Yingying Tu ◽  
Wenwei Lv ◽  
...  
Keyword(s):  
Skin Color ◽  
Genome Wide Association Study ◽  
Laying Hens ◽  
Genomic Analysis ◽  
Significant Snps ◽  
Pure Line ◽  
Genomic Region ◽  
High Quality Snps ◽  
A Genome ◽  
Genomic Regions

Abstract. Facial pigmentation is an important economic trait of chickens, especially for laying hens, which will affect the carcass appearance of eliminated layers. Therefore, identifying the genomic regions and exploring the function of this region that contributes to understanding the variation of skin color traits is significant for breeding. In the study, 291 pure-line Xinyang blue-shelled laying hens were selected, of which 75 were dark-faced chickens and 216 were white-faced chickens. The population was sequenced and typed by GBS genotyping technology. The obtained high-quality SNPs and pigmentation phenotypes were analyzed by a genome-wide association study (GWAS) and a FST scan. Based on the two analytical methods, we identified a same genomic region (10.70–11.60 Mb) on chromosome 20 with 68 significant SNPs (−log 10(P)>6), mapped to 10 known genes, including NPEPL1, EDN3, GNAS, C20orf85, VAPB, BMP7, TUBB1, ELMO2, DDX27, and NCOA5, which are associated with dermal hyperpigmentation.

scholarly journals GENETIC AND PHENOTYPIC ASSOCIATIONS OF JUVENILE BODY WEIGHTS AND EGG PRODUCTION TRAITS IN TWO STRAINS OF RHODE ISLAND CHICKENS

2021 ◽  
Vol 18 ◽  
pp. 66-70
Author(s):  
O. O. ONI ◽  
B. Y. ABUBAKAR ◽  
S. O. OGUNDIPE
Keyword(s):  
Body Weight ◽  
Rhode Island ◽  
Sexual Maturity ◽  
Egg Production ◽  
Genetic Parameters ◽  
Laying Hens ◽  
Genetic Correlations ◽  
Selection Criterion ◽  
Production Traits ◽  
Body Weights

Data on body weight at 16 (WT16); 20 (WT20) weeks of age and at sexual maturity (WTSM) weight of first egg (WT1st), age at sexual maturity (ASM) and 120-d egg production (EN)  were used to estimate genetic parameters in 636 hens of two strains of Rhode Island chikens. There were significant (P.01) differences between  the two strains for all traits except for WTSM.The heritability estimates obtained ranged from 0.05 to 0.41 and 0.04 to 0.30 for strains 1 and 2 respectively. The genetic correlations obtained for the various traits were medium to high for the two strains. The phenotypic correlations were generally low but followed the same trend. The results indicate that selected stocks of the two strains would show improvements in egg production and age   at sexual maturity if juvenile body weight (WT20) is employed as a selection criterion at housing for laying hens.

Production traits and hatching of a Barred Rock 1 pure line, its feather sexable strains and their crosses

2012 ◽  
Vol 52 (10) ◽  
pp. 945 ◽  
Author(s):  
Ismail Durmus ◽  
Huseyin Goger ◽  
Sahnur Demirtas ◽  
Sermin Yurtogullari
Keyword(s):  
Rhode Island ◽  
Sexual Maturity ◽  
Egg Production ◽  
Pure Line ◽  
Embryonic Mortality ◽  
Production Traits ◽  
Egg Weight ◽  
Significant Difference ◽  
Early Embryonic Mortality

The study was carried out to identify some production traits of the pure Barred Rock 1 (BR1) line and rapid × slow feathering line crosses derived from the BR1 pure line, in addition to F1 crosses of all these dam lines with Rhode Island Red 1 sire line. The BR1 line previously used a brown layer dam line for barred/non-barred day-old chick auto-sexing and synthetic slow and rapid wing feathering lines. Parent lines showed significant differences in sexual maturity and egg production (P < 0.01) and early embryonic mortality (P < 0.05). However, there was no significant difference in weight at sexual maturity, average egg weight, hatchability of fertile eggs, hatchability of total eggs set, and middle and late embryonic mortalities. A significant difference was found among F1 crosses with respect to weight at sexual maturity (P < 0.05), but no significant difference (P > 0.05) could be determined for age at sexual maturity and egg production. Overall, rapid feathering hens had better production traits than slow feathering hens. The dual crossbred parent lines exhibited almost the same level of egg production traits compared with the pure line.

Sign in / Sign up

Export Citation Format

Share Document