Journals / Harran Üniversitesi Ziraat Fakültesi Dergisi / 2013 / Cilt: 17 - Sayı: 1

BAŞLANGIÇ YEM TÜKETİMİ VE CANLI AĞIRLIĞININ YUMURTA TAVUKLARININ HAFTALIK BİREYSEL YUMURTA VERİM EĞRİSİNE ETKİSİ

EFFECTS OF INITIAL BODY WEIGHT AND FEED INTAKE ON INDIVIDUAL WEEKLY EGG PRODUCTION CURVE OF LAYING HENS

Pages
15–23
Publication Date
2022-10-17
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It was concluded that GK2001 model could conveniently be used todescribe individu al weekly egg production of hens fed the same diet, but increasing egg productioninterval for summarizing data was resulted in underestimating the actual annual egg production.

📌 3 Key Takeaways

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Objective & Hypothesis:The main objectives of this study were to compare eight mathematical models for abilit y todescribe weekly egg production curve of individual hens, and to examine any relation of eggproduction curve parameters with initial body weight (BW) and feed intake (FI)when they are feda single diet .
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Key Findings & Data:After determining the best model , the modelwas also investigated to assess whetherit was sensitive to increase in egg production intervals; from weekly (1W) to 2 weekly (2W) tofour weekly (4W) productions .
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Conclusion & Impact:It was concluded that GK2001 model could conveniently be used todescribe individu al weekly egg production of hens fed the same diet, but increasing egg productioninterval for summarizing data was resulted in underestimating the actual annual egg production.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The main objectives of this study were to compare eight mathematical models for abilit y todescribe weekly egg production curve of individual hens, and to examine any relation of eggproduction curve parameters with initial body weight (BW) and feed intake (FI)when they are feda single diet . After determining the best model , the modelwas also investigated to assess whetherit was sensitive to increase in egg production intervals; from weekly (1W) to 2 weekly (2W) tofour weekly (4W) productions . Data were obtained from 114 Nick Brown laying hens raised in thesameenvironmentalconditions .Themodelswerecomparedusingresidualmean(RM),coefficients of determination (R 2 ), correlation between the observed and the estimated eggproduction curves (r), AIC and BIC statistics. With respect to the goodness - of - fit criteria, among the eight mod els, GK2001 model with 3parameters performed best to describe the curve of individual weekly egg production. RM, R 2 , r,AIC and BIC values were 0.00, 0.99, 0.59,- 183.83 and- 175.37 for GK2001 followed by POL5with 6 parameters (0.00, 0.99, 0.59,- 194.38and- 177.45) and POL4 with 5 parameters (0.70, 0.99,0.56,- 188.09 and- 173.99). The parameters of GK2001 model were not affected by variation inbody weight or feed intake. It was concluded that GK2001 model could conveniently be used todescribe individu al weekly egg production of hens fed the same diet, but increasing egg productioninterval for summarizing data was resulted in underestimating the actual annual egg production.

Özet

Bu çalışmanın amacı, aynı yemle beslenen yumurta tavuklarının haftalık bireysel yumurtaverim eğrilerini tanımlayabi lmek bakımından sekiz matematiksel modeli karşılaştırmak veyumurta verim eğrisi parametreleri ile çevresel farklılıklar (başlangıç vücut ağırlığı - VA ve yemtüketimi - YT) arasında olası ilişkileri incelemektir. Veriler aynı çevre şartlarında yetiştirilen 11 4yumurtacı tavuktan elde edilmiştir. En iyi model belirlendikten sonra, belirlenen model yumurtaverim aralığının artırılmasına karşı (haftalık - 1H, iki haftalık - 2H ya da dört haftalık - 4H yumurtaverimi) hassas olup olmadığının anlaşılması için de test edi lmiştir. Modeller, kalıntı ortalaması(KO), determinasyon katsayısı (R 2 ), gözlenen ve tahmin edilen yumurta verim eğrileri arasındakikorelasyon (r), AIC ve BIC istatistikleri kullanılarak karşılaştırılmıştır.Karşılaştırma ölçütleri değerlendirildiğinde, haftalık bireysel yumurta verim eğrisinitanımlamak bakımından sekiz model arasından 3 parametreli GK2001in en iyi performansıgösteren model olduğu tespit edilmiştir. GK2001 modelinin KO, R 2 , r, AIC ve BICdeğerleri 0.00, 0.99, 0.59,- 183.83 ve- 175.37olarak bulunmuş, bunu sırasıyla 6 parametreliPOL5 modeli (0.00, 0.99, 0.59,- 194.38 ve- 177.45) ve 5 parametreli POL4 modeli (0.70,0.99, 0.56,- 188.09 ve- 173.99) izlemiştir. GK2001 modelinin parametreleri vücut ağırlığıya da yem tüketimindeki farklılık lardan etkilenmemiştir. Bu modelinin haftalık bireyselyumurta verim eğrilerinin tanımlanmasında kullanılmasının uygun olduğu, ancak yumurtaüretim aralığının artırılması durumunda yıllık gerçek yumurta veriminin olduğundan düşükolarak tahmin edilmesine y ol açacağı sonucuna varılmıştır.

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Cite This Article

ÇADIRCI, Ş., KONCAGÜL, S. (2022). BAŞLANGIÇ YEM TÜKETİMİ VE CANLI AĞIRLIĞININ YUMURTA TAVUKLARININ HAFTALIK BİREYSEL YUMURTA VERİM EĞRİSİNE ETKİSİ. Harran Üniversitesi Ziraat Fakültesi Dergisi, Cilt: 17 - Sayı: 1, 15–23. https://ajindex.com/articles/534454

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