Determination of Appropriate Regression Equations Using the Stepwise Method for Peak Yield in Holstein Cattle and Estimation of Milk Yield From the Time to Reach Peak

Naci Tüzemen; Mustafa Tankal

Makale detayları

Determination of Appropriate Regression Equations Using the Stepwise Method for Peak Yield in Holstein Cattle and Estimation of Milk Yield From the Time to Reach Peak

Yazarlar:

Naci Tüzemen | Mustafa Tankal

Yayıncı:

Ataturk University

Ana Başlıklar:

Büyükbaş Hayvan Yetiştirme ve Islahı

Dergi:

Journal of Animal Science and Economics Vol.3 Issue 2, pp.40-50

Belge Tipi:

Makale

Yayın Tarihi:

1/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001320996

pISSN:

2980-1486

Anahtar kelimeler:

Özet:

 This research was conducted to estimate 305-day milk yield, actual milk yield and adult age milk yield values in Holstein Friesian cattle with appropriate regression equations and to reveal the relationships between them. Correlation coefficients were calculated between the examined milk yield characteristics and peak yield, time to peak, lactation order, calving season, calving year, service period and drying time. Among the factors affecting yield, variable selection was made with the stepwise selection method to estimate milk yield, and appropriate regression equations and R2 values were calculated. Selection is essential for increasing milk yield and sustainability in cattle. With this research, it was determined how peak yield and milk yield values changed in black pied cattle. It was determined that there was a very significant p  .01 relationship between the examined features and peak yield.

 This research was conducted to estimate 305-day milk yield, actual milk yield and adult age milk yield values in Holstein Friesian cattle with appropriate regression equations and to reveal the relationships between them. Correlation coefficients were calculated between the examined milk yield characteristics and peak yield, time to peak, lactation order, calving season, calving year, service period and drying time. Among the factors affecting yield, variable selection was made with the stepwise selection method to estimate milk yield, and appropriate regression equations and R2 values were calculated. Selection is essential for increasing milk yield and sustainability in cattle. With this research, it was determined how peak yield and milk yield values changed in black pied cattle. It was determined that there was a very significant p  .01 relationship between the examined features and peak yield.

 This research was conducted to estimate 305-day milk yield, actual milk yield and adult age milk yield values in Holstein Friesian cattle with appropriate regression equations and to reveal the relationships between them. Correlation coefficients were calculated between the examined milk yield characteristics and peak yield, time to peak, lactation order, calving season, calving year, service period and drying time. Among the factors affecting yield, variable selection was made with the stepwise selection method to estimate milk yield, and appropriate regression equations and R2 values were calculated. Selection is essential for increasing milk yield and sustainability in cattle. With this research, it was determined how peak yield and milk yield values changed in black pied cattle. It was determined that there was a very significant p  .01 relationship between the examined features and peak yield.

 Bu araştırma, siyah alaca sığırlarda, 305 günlük süt verimi, gerçek süt verimi ve ergin çağ süt verimi değerlerini uygun regresyon denklemleri ile tahmin etmek ve bunlar arasında ilişkileri ortaya koymak amacıyla yapılmıştır. İncelenen süt verimi özellikleri ile pik verimi, pike ulaşma süresi, laktasyon sırası, buzağılama mevsimi, buzağılama yılı, servis periyodu ve kuruda kalma süresi arasında korelasyon katsayıları hesaplanmıştır. Verime etkili faktörlerden, süt verimlerinin tahmini için stepwise seleksiyon metodu ile değişken seçimi yapılmış ve uygun regresyon denklemleri ve R2 değerleri hesaplanmıştır. Sığırlarda süt veriminin artırılması ve sürdürülebilirlik için seleksiyon esastır. Bu araştırma ile siyah alaca sığırlarda, pik verimi ile süt verim değerlerinin nasıl değiştiği belirlenmiştir. İncelenen özellikler ile pik verimi arasında çok önemli P0.01 ilişki olduğu tespit edilmiştir.

Makale detayları

Determination of Appropriate Regression Equations Using the Stepwise Method for Peak Yield in Holstein Cattle and Estimation of Milk Yield From the Time to Reach Peak

Yazarlar:

Naci Tüzemen | Mustafa Tankal

Yayıncı:

Ataturk University

Ana Başlıklar:

Büyükbaş Hayvan Yetiştirme ve Islahı

Dergi:

Journal of Animal Science and Economics Vol.3 Issue 2, pp.40-50

Belge Tipi:

Makale

Yayın Tarihi:

1/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001320996

pISSN:

2980-1486

Holstein Friesian

Peak Yield

Regression

Stepwise Selection

SustainabilitySiyah Alaca

Pik Verimi

Regresyon

Stepwise Seleksiyon

Sürdürülebilirlik

Sayı

Makale detayları

Yazarlar: Naci Tüzemen | Mustafa Tankal

Yayıncı: Ataturk University

Ana Başlıklar: Büyükbaş Hayvan Yetiştirme ve Islahı

Dergi: Journal of Animal Science and Economics Vol.3 Issue 2, pp.40-50

Belge Tipi: Makale

Yayın Tarihi: 1/2024

Belge Dili: Türkçe

Document ID (Org No.): 2001320996

pISSN: 2980-1486

Sayı

Yazarlar:

Naci Tüzemen | Mustafa Tankal

Yayıncı:

Ataturk University

Ana Başlıklar:

Büyükbaş Hayvan Yetiştirme ve Islahı

Dergi:

Journal of Animal Science and Economics Vol.3 Issue 2, pp.40-50

Belge Tipi:

Makale

Yayın Tarihi:

1/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001320996

pISSN:

2980-1486