Effect of body weight at photostimulation on productive performance and welfare aspects of commercial layers
Objective Due to current selection practices for increased egg production and peak persistency, the production profile, age at maturity, and body weight criteria for commercial layers are constantly changing. Body weight and age at the time of photostimulation will thus always be the factors that ne...
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| Format: | Article |
| Language: | English |
| Published: |
Asian-Australasian Association of Animal Production Societies
2024-03-01
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| Series: | Animal Bioscience |
| Subjects: | |
| Online Access: | http://www.animbiosci.org/upload/pdf/ab-22-0365.pdf |
| _version_ | 1797272568977162240 |
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| author | Fazal Raziq Jibran Hussain Sohail Ahmad Muhammad Asif Hussain Muhammad Tahir Khan Assad Ullah Muhammad Qumar Fazal Wadood Gull-e-Faran |
| author_facet | Fazal Raziq Jibran Hussain Sohail Ahmad Muhammad Asif Hussain Muhammad Tahir Khan Assad Ullah Muhammad Qumar Fazal Wadood Gull-e-Faran |
| author_sort | Fazal Raziq |
| collection | DOAJ |
| description | Objective Due to current selection practices for increased egg production and peak persistency, the production profile, age at maturity, and body weight criteria for commercial layers are constantly changing. Body weight and age at the time of photostimulation will thus always be the factors that need to be adequately addressed among various production systems. The current study was carried out to determine the effects of pullets’ body weight (low, medium, and heavy) on their performance, welfare, physiological response, and hormonal profile. Methods With regard to live weight, 150 16-week-old pullets were divided into three groups using a completely randomized design (CRD) and held until the 50th week. One-way analysis of variance was used to evaluate the data under the CRD, and the least significant difference test was used to distinguish between treatment means. Results In comparison to the medium and light birds, the heavy birds had higher body weight at maturity, an earlier age at maturity, and higher egg weight, eggshell weight, eggshell thickness, egg yolk index, breaking strength, egg surface area, egg shape index, egg volume, and hormonal profile except corticosterone. However, the medium and light birds had lower feed consumption rates per dozen eggs and per kilogram of egg mass than the heavy birds. Light birds showed greater body weight gain, egg production, and egg specific gravity than the other categories. At 20 weeks of age, physiological response, welfare aspects, and catalase were non-significant; however, at 50 weeks of age, all these factors—aside from catalase—were extremely significant. Conclusion The findings of this study indicate that layers can function at lower body weights during photostimulation; hence, dietary regimens that result in lighter pullets may be preferable. Additionally, the welfare of the birds was not compromised by the lighter weight group. |
| first_indexed | 2024-03-07T14:31:15Z |
| format | Article |
| id | doaj.art-9eeff71e5039440bb2809b9f147c6954 |
| institution | Directory Open Access Journal |
| issn | 2765-0189 2765-0235 |
| language | English |
| last_indexed | 2024-03-07T14:31:15Z |
| publishDate | 2024-03-01 |
| publisher | Asian-Australasian Association of Animal Production Societies |
| record_format | Article |
| series | Animal Bioscience |
| spelling | doaj.art-9eeff71e5039440bb2809b9f147c69542024-03-06T05:12:44ZengAsian-Australasian Association of Animal Production SocietiesAnimal Bioscience2765-01892765-02352024-03-0137350050810.5713/ab.22.036525024Effect of body weight at photostimulation on productive performance and welfare aspects of commercial layersFazal Raziq0Jibran Hussain1Sohail Ahmad2Muhammad Asif Hussain3Muhammad Tahir Khan4Assad Ullah5Muhammad Qumar6Fazal Wadood7Gull-e-Faran8 Department of Poultry Production, Faculty of Animal Production and Technology, University of Veterinary and Animal Sciences, Lahore-54000, Pakistan Department of Poultry Production, Faculty of Animal Production and Technology, University of Veterinary and Animal Sciences, Lahore-54000, Pakistan Department of Poultry Production, Faculty of Animal Production and Technology, University of Veterinary and Animal Sciences, Lahore-54000, Pakistan College of Animal Husbandry and Veterinary Sciences, Abdul Wali khan University, Mardan-23200, Pakistan Department of Poultry Science, Faculty of Animal Production and Technology, Cholistan University of Veterinary and Animal Sciences, Bahawalpur-63100, Pakistan Civil Veterinary Hospital Gumbat, Kohat-26120, Pakistan Department of Animal Nutrition, Faculty of Animal Production and Technology, Cholistan University of Veterinary and Animal Sciences, Bahawalpur-63100, Pakistan Department of Theriogenology, Faculty of Veterinary Science, Cholistan University of Veterinary and Animal Sciences, Bahawalpur-63100, Pakistan Department of Biochemistry, Institute of Biochemistry, Biotechnology and Bioinformatics, The Islamia University of Bahawalpur-63100, PakistanObjective Due to current selection practices for increased egg production and peak persistency, the production profile, age at maturity, and body weight criteria for commercial layers are constantly changing. Body weight and age at the time of photostimulation will thus always be the factors that need to be adequately addressed among various production systems. The current study was carried out to determine the effects of pullets’ body weight (low, medium, and heavy) on their performance, welfare, physiological response, and hormonal profile. Methods With regard to live weight, 150 16-week-old pullets were divided into three groups using a completely randomized design (CRD) and held until the 50th week. One-way analysis of variance was used to evaluate the data under the CRD, and the least significant difference test was used to distinguish between treatment means. Results In comparison to the medium and light birds, the heavy birds had higher body weight at maturity, an earlier age at maturity, and higher egg weight, eggshell weight, eggshell thickness, egg yolk index, breaking strength, egg surface area, egg shape index, egg volume, and hormonal profile except corticosterone. However, the medium and light birds had lower feed consumption rates per dozen eggs and per kilogram of egg mass than the heavy birds. Light birds showed greater body weight gain, egg production, and egg specific gravity than the other categories. At 20 weeks of age, physiological response, welfare aspects, and catalase were non-significant; however, at 50 weeks of age, all these factors—aside from catalase—were extremely significant. Conclusion The findings of this study indicate that layers can function at lower body weights during photostimulation; hence, dietary regimens that result in lighter pullets may be preferable. Additionally, the welfare of the birds was not compromised by the lighter weight group.http://www.animbiosci.org/upload/pdf/ab-22-0365.pdfbody weightegg qualityhormonal profileproductive performancewelfare |
| spellingShingle | Fazal Raziq Jibran Hussain Sohail Ahmad Muhammad Asif Hussain Muhammad Tahir Khan Assad Ullah Muhammad Qumar Fazal Wadood Gull-e-Faran Effect of body weight at photostimulation on productive performance and welfare aspects of commercial layers Animal Bioscience body weight egg quality hormonal profile productive performance welfare |
| title | Effect of body weight at photostimulation on productive performance and welfare aspects of commercial layers |
| title_full | Effect of body weight at photostimulation on productive performance and welfare aspects of commercial layers |
| title_fullStr | Effect of body weight at photostimulation on productive performance and welfare aspects of commercial layers |
| title_full_unstemmed | Effect of body weight at photostimulation on productive performance and welfare aspects of commercial layers |
| title_short | Effect of body weight at photostimulation on productive performance and welfare aspects of commercial layers |
| title_sort | effect of body weight at photostimulation on productive performance and welfare aspects of commercial layers |
| topic | body weight egg quality hormonal profile productive performance welfare |
| url | http://www.animbiosci.org/upload/pdf/ab-22-0365.pdf |
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