Quality, Nutritional And Organoleptic Evaluation Of Eggs From Different Chicken Genotypes In Pakistan (Record no. 10686)
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000 -LEADER | |
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fixed length control field | 05608nam a22002057a 4500 |
005 - DATE AND TIME OF LATEST TRANSACTION | |
control field | 20170324143316.0 |
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
fixed length control field | 170324b2016 xxu||||| |||| 00| 0 eng d |
041 ## - LANGUAGE CODE | |
Language code of text/sound track or separate title | eng |
082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
Classification number | 2683-T |
100 ## - MAIN ENTRY--AUTHOR NAME | |
Personal name | Sumera Musarrat (2010-VA-319) |
110 ## - MAIN ENTRY--CORPORATE NAME | |
Location of meeting | Dr. Jibran Hussain |
245 ## - TITLE STATEMENT | |
Title | Quality, Nutritional And Organoleptic Evaluation Of Eggs From Different Chicken Genotypes In Pakistan |
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
Year of publication | 2016. |
300 ## - PHYSICAL DESCRIPTION | |
Number of Pages | 74p.; |
502 ## - DISSERTATION NOTE | |
Dissertation note | Egg is a miraculous food having all essentials of life. In the recent times, consumer consciousness regarding egg and egg products is increasing and people prefer to eat eggs from indigenous breeds over commercial breed, as they consider them of high nutritional value and good quality. The present study was conducted with the objectives to compare egg quality, proximate composition, macro minerals analysis, fatty acids profile, and organoleptic evaluation of eggs from 6 different breeds of chicken in Pakistan. For this purpose, 5 bird of each of the 6 breeds (White Leghorn, White Plymouth Rock, Naked Neck, Aseel, Rhode Island Red and Fayoumi; 40-50 week of age) were kept under Completely Randomized Design on litter floor. A total of 10 eggs from each breed were used for egg geometry (Egg Shape index, surface area, volume) and quality analysis (Egg specific gravity, shell thickness, shell %, albumen %, albumen index, haugh unit score, albumen pH, yolk pH, yolk %, yolk index, yolk color, blood and meat spots), 3 from each breed were used for proximate analysis (Moisture %, Crude Protein %, Lipids %, Ash %, Carbohydrates %), macro minerals (Calcium, Magnesium, Sodium, Potassium, Iron) analysis, and fatty acid analysis, respectively. For organoleptic evaluation, a semi trained panel of 20 people evaluated egg samples randomly which were boiled at same time peeled and sliced into pieces. The panel evaluated Color, Aroma, Flavor, Taste, mouth feel, and overall quality of Albumen and Yolk separately on 15- point hedonic scale. The data were analyzed with Analysis of Variance (ANOVA) technique under Completely Randomized Design. The significant means were compared using Duncan’s Multiple Range (DMR) test using SAS 9.4. Results showed no difference among breeds for egg geometry and shell quality parameter, however, egg specific gravity was significantly higher in Fayoumi chicken. In albumen quality, Rhode Island Red eggs showed highest albumen percentage, while Haugh unit score was best in eggs of Aseel, Fayoumi, Naked neck and Rhode Island Red as compa red to other breeds. But, Albumen index and Albumen pH Summary 58 remained unaffected by different breeds. Similarly, in yolk quality traits, yolk percentage was significantly higher in Aseel, Fayoumi and Naked neck, and yolk color in eggs of Fayoumi, but yolk pH and yolk index remained unaffected by different breeds. Proximate analysis showed significantly highest moisture and carbohydrate contents in White leghorn eggs while Protein contents were highest in Aseel, Naked neck and White Plymouth rock. Moreover, White Plymouth rock eggs also showed more lipid contents, while Ash percentage remained comparable among different breeds. Macro minerals analysis showed higher Iron contents in eggs of White leghorn breed, while Fayoumi eggs were higher in Magnesium, Potassium, and Sodium contents. Naked neck eggs also showed higher Potassium and Calcium contents. Fatty acid analysis showed higher Myristic acid (C14:0), DPA contents in eggs of White leghorn, Stearic acid (C18:0) in eggs of Fayoumi and Aseel, Saturated Fatty acids in eggs of Fayoumi, Palmitoleic acid (C16:1), Oleic acid (C18:1), Linoleic acid (C18:2), Arachidonic acid (C20:4), EPA, DPA, DHA, MUFA, PUFA, and n-3 fatty acids in White Plymouth rock, n-6 fatty acids in eggs of Rhode Island Red, While α-Linolenic acid (C18:3) was lowest in eggs of Naked neck breed as compared to rest of the breeds. But, Naked neck showed higher total lipid contents as compared to other breeds. During organoleptic evaluation, White Leghorn eggs showed highest intensity for yolk taste, flavor and mouth feel, whilst, yolk color, aroma and overall quality remained comparable among different breeds. Likewise, in albumen organoleptic evaluation, Albumen color was least intense while Albumen Aroma was highest in Aseel eggs. Albumen taste, flavor and overall quality was highly intense in White Leghorn as compared to other breeds. Conclusions On the basis of the results of the present study it can be concluded that egg geometry was not affected by genotype variation, however, very interestingly, huge variation was observed Summary 59 regarding internal egg quality traits, proximate and mineral composition, fatty acid profile as well as sensory evaluation of the eggs from different chicken breeds. Suggestions and Recommendations: Based upon the findings of present study it is suggested for future researchers that: 1. There is a dire need to conduct thorough studies to investigate the genetic basis of differences among different breeds regarding egg quality attributes. 2. In future breeding plans, egg quality and sensory properties of different breeds must be kept in mind and incorporated accordingly. 3. Improvement in production performance of indigenous breeds through selection should be made as these breeds have better egg characteristics and preference by the local community. |
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
Topical Term | Poultry Production |
700 ## - ADDED ENTRY--PERSONAL NAME | |
Personal name | Mr. Faisal Hussnain |
700 ## - ADDED ENTRY--PERSONAL NAME | |
Personal name | Prof. Dr. Khalid Javed |
942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
Koha item type | Thesis |
Damaged status | Collection code | Permanent Location | Current Location | Shelving location | Date acquired | Full call number | Accession Number | Koha item type |
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Veterinary Science | UVAS Library | UVAS Library | Thesis Section | 2017-03-24 | 2683-T | 2683-T | Thesis |