scholarly journals Relationship of early laying, number and weight of laid eggs to fertility and hatchability of eggs in initial laying lines of hens

2010 ◽  
Vol 53 (2) ◽  
pp. 216-224
Author(s):  
L. Máchal ◽  
L. Švábová ◽  
L. Severa ◽  
R. Filipčík
Keyword(s):  
Rhode Island ◽  
Positive Relationship ◽  
Egg Weight ◽  
Average Percentage ◽  
Selection For ◽  
Positive Correlations ◽  
Hatching Eggs ◽  
Efficiency Of Selection ◽  
Relationship Of ◽  
Total Average

Abstract. The relationships between age of hens, number of laid eggs, egg weight on one hand and fertility and hatchability on the other were analysed during two periods of individual pedigree hatching. Altogether 1 369 hens originated from 9 selected initial laying lines of Bar Plymouth Rock (BPR) (3 lines), Rhode Island Red (RIR) (4 lines), Rhode Island White (RIW), and Sussex Light (SUL) breeds. A total number of 23 473 eggs from hens of all 9 aforementioned lines were set after being artificially inseminated. The total average hatchability of set eggs was 73.2 % and the average percentage of unfertilised eggs was 9.3 %. Positive correlations (rp =0.22 to rp =0.72; P<0.01) were found between the total number of eggs laid till the 240th day of age and the number of eggs produced at the beginning of the laying period in the all studied lines. There were negative correlations (rp =−0.03 to rp =−0.16; P<0.01) between the total number of eggs laid till the 240th day of age and the average egg weight (on the 222nd day of age). Zero to positive correlations existed between the total number of eggs laid till the 240th day of age on one hand and the number of hatching eggs, number of hatched chicks/hen and hatchability; the calculated values ranged from rp =−0.02 to rp =0.30 (P<0.01), from rp = −0.08 to rp =0.36 (P<0.01), and from rp =−0.09 to rp =0.30 (P<0.01), respectively. Correlations between the egg weight and number of hatched chicks/hen were negative to zero and their values ranged from rp =−0.19 (P<0.01) to rp =0.02. Correlations between the egg weight and hatchability were always negative (rp =−0.15; P<0.05 to rp =−0.04). Regarding the fact that there is a concurrent selection for an increased egg weight it can be said that this preference of smaller eggs is really counter-productive. A positive relationship between the number of hatching eggs/hen and the hatchability (rp =−0.02 to rp =0.39; P<0.01) was influenced by calculated negative correlations existing between the weight of eggs and the hatchability as well as between the weight of eggs and the number of laid eggs. As far as the hatchability is concerned, it can be concluded that in the aforementioned laying lines those hens are preferred, which produce more eggs of smaller size and that this fact obviously influences also the efficiency of selection for a greater weight of produced eggs.

scholarly journals Relationship of Cuticle Development with Water Loss and Texture of Pepper Fruit

2021 ◽  
Author(s):  
Ayako Konishi ◽  
Satoshi Terabayashi ◽  
Akihiro Itai
Keyword(s):  
Shelf Life ◽  
Fruit Quality ◽  
Water Loss ◽  
Positive Relationship ◽  
Cuticular Membrane ◽  
Strong Positive Relationship ◽  
Pepper Fruit ◽  
Positive Correlations ◽  
Cuticle Development ◽  
Relationship Of

Postharvest water loss in pepper fruit (Capsicum annuum L.) reduces its shelf life. Fruit texture is one of the most important components of fruit quality for consumers. In this study, the anatomical traits of pepper fruit related to postharvest water loss and texture were assessed. There was a strong positive relationship between postharvest water loss and the thickness of the cuticular membrane, cuticular weight, total cutin weight, and polysaccharide-cutan weight. An amorphous fibrous structure that forms a path for diffusion and increases water loss was observed in the thick cuticle of the pericarp. In addition, positive correlations between the hardness of the exocarp and the weight of cuticular membrane, cutin content, and polysaccharide-cutan content were found. These results indicate that the thickness of the cuticular membrane wedged between subepidermal cells may influence water loss through the pericarp of pepper fruit and fruit with a high cutin and polysaccharide content have a hard tough texture.

scholarly journals Relationship of Hatching Egg Weights with Egg Weight Loss and DOC Weights of Chickens from Bangkok Male Crossbreeding with Pelung Chicken Broodstock

2020 ◽  
Vol 5 (1) ◽  
pp. 35-39
Author(s):  
J. Junaedi ◽  
H. Husnaeni
Keyword(s):  
Weight Loss ◽  
Data Analysis ◽  
Temperature Regulation ◽  
Digital Camera ◽  
Normal Range ◽  
Egg Weight ◽  
Research Material ◽  
Hatching Eggs ◽  
Relationship Of ◽  
Very High

This study aims to determine the correlation between hatching egg weight with egg weight loss and DOC weight of Bangkok male crossbreed chickens with Pelung broodstock. This research uses a unit of automatic digital hatching machines (temperature regulation and automatic turning). The research material is Bangkok rooster chicken, amounting to two tails and four Pelung broilers. The chicken is crossed, and then the eggs are collected to be hatched eggs. This study uses digital camera tools, digital scales, and calculators. The coded eggs are hatched for 21 days. The parameters measured in this study were: Hatching egg weight (grams), egg weight of day 18th hatching, egg weight loss (%) / egg shrinkage, DOC weight, the correlation value between the weight of hatching eggs with egg weight loss, the correlation value between the weight of hatching eggs with the weight of DOC. Data analysis using correlation. The results obtained were the average hatching egg weight of 45.91 ± 3.75 grams, the average of hatching eggs on the 18th day 41.13 ± 3.43 grams, egg weight loss 10.40 ± 0.56%, weight DOC 35.36 ± 3.33 grams, correlation of hatching egg weight to DOC0.98 weight, hatching egg correlation with egg weight loss -0.25. Based on the results of the study,  it can be concluded that the characteristics of Bangkok crossbreed hatching eggs with Pelung brooders are in the normal range.  The correlation of hatching egg weight with very high DOC weight and positively correlated, correlation of hatching egg weight with low egg weight loss and negatively correlated.

Sire × hatching season interaction in egg production traits within flocks of domestic fowl

1979 ◽  
Vol 30 (5) ◽  
pp. 991
Author(s):  
BH Yoo ◽  
BL Sheldon
Keyword(s):  
Domestic Fowl ◽  
Variance Component ◽  
Egg Production ◽  
Production Traits ◽  
White Leghorn ◽  
Egg Weight ◽  
Sib Families ◽  
Selection For ◽  
Efficiency Of Selection ◽  
Season Interaction

The extent of sire x hatching season interaction in egg production characters has been studied in White Leghorn, Australorp and Synthetic flocks in which half-sib families bred from the same sires were mated largely to the same dams for spring and autumn hatchings. Interaction appeared to be more important in White Leghorn and Synthetic than in Australorp. The estimate of variance component for interaction was not consistent among the three flocks, and it was important only in certain flocks for different characters: age at first egg, part-annual hen-housed production (PHP), and egg weight at 34 and 62 (EWL) weeks of age in Synthetic; and annual survivors' production and egg specific gravity at 62 weeks of age (SGL) in White Leghorn. Comparison of within-season and across-seasons heritabilities showed that the former could be on average more than 45% higher than the latter in PHP, EWL, SGL and annual hen-housed production. As the estimates of the genetic correlation coefficient between seasons tend to be below 1.0 for many characters in White Leghorn and Synthetic, the sire x hatching season interaction may need to be taken into account and investigated further to improve the efficiency of selection for egg production.

scholarly journals The relationship of shortening and strength of eggshell to some egg quality indicators and egg production in hens of different initial laying lines*

2002 ◽  
Vol 45 (3) ◽  
pp. 287-296 ◽  
Author(s):  
L. Máchal ◽  
J. Simeonovová
Keyword(s):  
Rhode Island ◽  
Egg Production ◽  
Egg Quality ◽  
Mean Values ◽  
Time Period ◽  
The Mean ◽  
Positive Correlations ◽  
Shape Ratio ◽  
Relationship Of ◽  
The Relationship

Abstract. The mean values of shortening force at fracture of egg found out during the five-month observation period ranged between 0.17 and 0.19 mm in 231 hens of seven initial laying lines and strength of eggshell ranged from 29.05 N to 36.46 N. The mean values of shortening force at fracture decreased with age of hens from 0.18–0.22 mm at 28 wk of age to 0.12–0.15 mm at 46 wk of age. Similarly, strength of eggshell decreased from 31.35–37.68 N to 27.91–34.50 N in same time period. Index of shape, ratio of eggshell and albumen to total egg weight also decreased with increasing age of hens. The highest ratio of abnormal eggs was found in both Bar Plymouth Rock lines (BPR A and BPR B) – 7.5% and 8.3% resp. The lowest ratio was found in lines Rhode Island Red (RIR C) – 2.1% and Susex Light (SU) – 2.4 %. The ratio of cracked eggs ranged from 0.9 % to 3.9 %, the ratio of double-yolked eggs was 0.5%–3.2% and the ratio of eggs without shell was 0.4 %–1.5 %. The calculated coefficients of correlation between shortening of egg and index of shape were mainly positive with rp = 0.41 (P < 0.05) and rp = 0.49 (P < 0.01). The correlations between shortening of egg and total number of eggs were mainly negative with rp = −0. 34 (P < 0.05) and rp = −0. 46 (P < 0.01). Similar correlations existed also between shortening of egg and ratio of cracked eggs, i.e. rp = −0. 44 (P < 0.05) and rp = −0. 46 (P < 0.01). The correlations between shortening and total number of abnormal eggs were mainly negative rp = −0. 39 (P < 0.05) and rp = −0. 53 (P < 0.01). The relationships between strength of eggshell and shortening of egg are characterized by positive correlations – rp = 0. 40 (P < 0.05) and rp = 0.55, (P < 0.01). Positive correlations existed also between strength of eggshell and index of shape (from rp = 0. 37 (P < 0.05) to rp = 0.59 (P < 0.01)). Correlations between strength of eggshell and ratio of eggshell ranged from rp = 0.44 (P < 0.01) to rp = 0.74 (P < 0.01). Mainly negative correlations were found out between strength of eggshell and number of eggs rp = −0. 34 (P<0.05) and rp = −0. 44 (P < 0.01), similarly between the strength of eggshell and cracked eggs rp = −0. 40 (P < 0.05) and rp = −0. 52 (P < 0.01). Negative correlations existed between strength of eggshell and total number of abnormal eggs (rp = −0.45 to rp = −0.53 (P < 0.01)). This means that both eggshell shortening and strength may be used when selecting lines for egg quality.

Relationship of Love, Affect and Wellbeing

2014 ◽  
Vol 2 (1) ◽  
Author(s):  
Dr. Thiyam Kiran Singh ◽  
Aastha Dhingra
Keyword(s):  
Positive Affect ◽  
Positive Emotions ◽  
Positive Relationship ◽  
Interpersonal Relationship ◽  
Significant Positive Relationship ◽  
Young Females ◽  
Close Friendship ◽  
Major Facilitator ◽  
Relationship Of ◽  
The Relationship

Love is more than a close friendship. It acts as a major facilitator of interpersonal relationship. Love is positive in nature and leaves a positive affect on every individual. An individual in love not only feels positive but spreads positivity around. They smile, be kind to other people, behave compassionately with everyone. If the person is happy then he is likely to be psychologically and emotionally healthy. The current study aimed at understanding the relationship between love, affect and wellbeing among young females aged between 20-25 years. The study reported a significant positive relationship between love and positive affect with the significant correlation of 0.29 at 0.05 levels (p<0.05). It was also found a significant positive relationship between love and wellbeing with the significant correlation of 0.58 at 0.01 level (p<0.01). This means that people in love experience positive emotions and healthy wellbeing. The correlation between love and negative affect came out to be insignificant. The correlation turned out to be -0.13. This means that people in love do not experience negative emotions.

The influence of Country of Origin Image on HCMC consumer attitudes towards Vietnamese garments

2020 ◽  
Author(s):  
Ha Nam Khanh Giao
Keyword(s):  
Strong Influence ◽  
Positive Relationship ◽  
Country Of Origin ◽  
Consumer Attitudes ◽  
Competitive Advantages ◽  
Age And Gender ◽  
Managerial Implications ◽  
And Gender ◽  
Country Of Origin Image ◽  
Relationship Of

The study analyses the factors of Country of Origin Image influencing Vietnamese consumer attitudes towards Vietnamese garments by surveying 366 customers. Cronbach's Alpha analysis and EFA analysis together with multiple regression analysis were used with SPSS. The results show that only two components having a strong influence are "Country of Origin Image" and "Country of Origin Image of Product"; only "Country of Origin Image of Product" affects consumer’s perceived cost of garments; finally, there is a positive relationship of perceived benefits and a negative one of perceived cost of attitudes towards Vietnamese garments. There is no difference in terms of "income", "age" and "gender" for consumer attitudes towards Vietnamese garments. The study also suggests a number of managerial implications for the garment companies to have better competitive advantages.

Assessment of caudal fin clip as a non-lethal technique for predicting muscle tissue mercury concentrations in largemouth bass

2008 ◽  
Vol 5 (3) ◽  
pp. 200 ◽  
Author(s):  
S. A. Ryba ◽  
J. L. Lake ◽  
J. R. Serbst ◽  
A. D. Libby ◽  
S. Ayvazian
Keyword(s):  
Rhode Island ◽  
Muscle Tissue ◽  
Largemouth Bass ◽  
Total Mercury ◽  
Micropterus Salmoides ◽  
Mercury Contamination ◽  
Caudal Fin ◽  
Minimal Impact ◽  
Fish Consumption Advisories ◽  
Relationship Of

Environmental context. In the development of fish consumption advisories, fisheries biologists routinely sacrifice fish and analyse muscle fillets in order to determine the extent of mercury contamination. Such lethal techniques may not be suitable for endangered species or limited fish populations from smaller-sized water bodies. We compared the measured total mercury concentrations in tail fin clips to that of muscle fillets and illustrated that tail fin clips may be used as an accurate tool for predicting mercury in muscle tissue. This is the first study on the use of tail fin clips to predict mercury levels in the muscle tissue of largemouth bass with minimal impact on the fish. Abstract. The statistical relationship between total mercury (Hg) concentration in clips from the caudal fin and muscle tissue of largemouth bass (Micropterus salmoides) from 26 freshwater sites in Rhode Island, USA was developed and evaluated to determine the utility of fin clip analysis as a non-lethal and convenient method for predicting mercury concentrations in tissues. The relationship of total Hg concentrations in fin clips and muscle tissue showed an r2 of 0.85 and may be compared with an r2 of 0.89 for Hg concentrations between scales and muscle tissue that was determined in a previous study on largemouth bass. The Hg concentration in fin clip samples (mean = 0.261 μg g–1 (dry)) was more than a factor of twenty greater than in the scale samples (mean = 0.012 μg g–1 (dry)). Therefore, fin clips may be a more responsive non-lethal predictor of muscle-Hg concentrations than scale in fish species which may have reduced Hg concentrations.

Attitudes of Parents and Guardians towards Education, School and Teachers, and Children's Academic Achievement

1996 ◽  
Vol 79 (3_suppl) ◽  
pp. 1387-1390 ◽  
Author(s):  
Varghese I. Cherian ◽  
Lily Cherian
Keyword(s):  
Academic Achievement ◽  
Analysis Of Variance ◽  
Positive Relationship ◽  
Education School ◽  
Relationship Of ◽  
The Relationship

To study the relationship of parents' attitudes towards teachers, school, and education with the academic achievement of their children, a questionnaire was given to the parents of 1021 Standard 7 pupils (369 boys and 652 girls) randomly chosen from the Standard 7/Year 9 population of 14,765 boys and 26,109 girls. Analysis of variance indicated a positive relationship between parents' attitudes and the academic achievement of their children regardless of whether the children's parents were deceased or alive.

Hoteliers’ Perceptions of the Impacts of Green Tourism on Hotel Operating Costs in Zimbabwe: The Case of Selected Harare Hotels

2012 ◽  
Vol 02 (11) ◽  
pp. 64-73
Author(s):  
Nelson Zengeni ◽  
Dorothy Monica Fungai Zengeni ◽  
Shelter Muzambi
Keyword(s):  
Positive Relationship ◽  
Green Revolution ◽  
Operating Costs ◽  
Hotel Employees ◽  
Green Tourism ◽  
The Subject ◽  
Key Drivers ◽  
Relationship Of

The purpose of the study was to determine the possible relationship of green hospitality and operating costs in Zimbabwe’s hotels. To achieve this, it looked at practices in hotels and their effect on operating costs and also on the awareness levels of the employees on the subject. The study showed that there is both a negative and positive relationship between green hospitality and operating costs as perceived by the hotel employees. The findings also revealed that employee awareness is important in the discussion of green tourism as a measure of controlling costs as they (employees) are the key drivers of the green revolution.

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