Journals / Tarım Bilimleri Dergisi / 1996 / Cilt: 02 - Sayı: 02

Relationships Between Inbreeding Coefficient and Production Traits in Brown Cattle

Esmer Sığırlarda Akrabalı Yetişme Katsayısı İle Verim Özellikleri Arasındaki İlişkiler

Pages
11–19
Publication Date
1996-05-01
DOI
—
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AI Summary & Key Takeaways

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

Effect of inbreeding on 305 days milk yield and lactation length were highly significant P0.05 .

📌 3 Key Takeaways

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Objective & Hypothesis:The aim of this study was to determined the effect of inbreeding on production traits in Brown Cattle.
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Key Findings & Data:In this study data for the production records collected through the years 1968-94 from Brown cows kept at the Regional Agricultural School in Van.
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Conclusion & Impact:Effect of inbreeding on 305 days milk yield and lactation length were highly significant P0.05 .
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Akrabal ı yetiştirme · Esmer s ığı r · süt verimi

Abstract

The aim of this study was to determined the effect of inbreeding on production traits in Brown Cattle. In this study data for the production records collected through the years 1968-94 from Brown cows kept at the Regional Agricultural School in Van. The records used were adjusted to systematic environmental factors. At first, the coeff ı cient of inbreeding for each individuals was calculated by using Wright's technique. And then the effect of inbreeding was analysed by calculating the regression coefficients of traits on inbreeding coefficient. The environmental effects were simultaneously evaluated by the least squares method. Mean coefficients of inbreeding were about 6.89±0.89% ranging between 0% and 36.99%. Effect of inbreeding on 305 days milk yield and lactation length were highly significant P0.05 .

Özet

Bu çal ışma, Van Tar ı m Meslek Lisesi işletmesinde yetiştirilen Esmer s ığı rlarda akrabal ı yetiştirmenin verim özelliklerine etkilerini incelemek için yap ı lmışt ı r. Çal ışmada 1968-94 y ı lları aras ı nda, işletmede tutulmu ş kayı tlardan yararlan ı lmışt ı r. Her bireyin akrabal ı yetiştirme katsay ı s ı hesaplanmışt ı r. Akrabal ı yetiştirmenin verimler üzerindeki etkisi, diğer sistematik çevre faktörlerine göre düzeltilmi ş verilerden basit doğrusal regresyon katsay ı lar ı kullan ı larak hesaplanmışt ı r. Akrabal ı yetişme katsay ı s ı % O ile % 36.99 aras ı nda değişmiş ve ortalama % 6.14±0.46 olmu ştur. Akrabal ı yetiştirmenin 305 günlük süt verimi ve laktasyon süresine etkisi çok önemli P0.05 bulunmuştur. Bu özelliklerle akrabal ı yetişme katsay ı lar ı aras ı ndaki korelasyonlar - 0.1816±0.0363, -0.1206±0.0217 ve -0.1500±0.0180, bu özelliklere göre akrabal ı yetişme katsay ı sı n ı n regresyonlar ı - 15.30±3.07 kg, -1.00±0.30 kg ve 1.87±0.61 gün'dür. Akrabal ı yetişme katsay ı s ı ile damı zl ı kta kullanma yaşı , ilkine buzağı lama yaşı , buzağı lama aral ığı ve servis peryodu aras ı ndaki korelasyonlar s ı ras ı yla, 0.1285±0.0283, 0.1029±0.0247, 0.0352±0.0088 ve 0.0583±0.0157 ve bu özelliklere göre akraba!' yeti şme katsay ı sı n ı n regresyonlar ı ise sı ras ı yla 1.903±1.600 gün, 1.461±1.419 gün, 0.274±0.546 gün ve 0.329±0.581 gün olarak bulunmu ştur. Akrabal ı yetiştirmenin döl verim özelliklerine etkisi önemsiz bulunmu ştur.

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Cite This Article

KAYGISIZ, A., VANLI, Y. (1996). Relationships Between Inbreeding Coefficient and Production Traits in Brown Cattle. Tarım Bilimleri Dergisi, Cilt: 02 - Sayı: 02, 11–19. https://ajindex.com/articles/217361

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