Investigation of Three Different Lactation Models in Milk Yields of Holstein Cows

Mehmet Nurullah ORMAN

Makale detayları

Investigation of Three Different Lactation Models in Milk Yields of Holstein Cows

Yazarlar:

Mehmet Nurullah ORMAN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Veterinary and Animal Sciences 1999 Vol.23 Issue 6, pp.605-614

Belge Tipi:

Makale

Yayın Tarihi:

5/1999

Belge Dili:

Türkçe

Document ID (Org No.):

2000771854

Sıklık:

İki Aylık

eISSN:

1303-6181

pISSN:

1300-0128

Anahtar kelimeler:

Özet:

 

The purpose of this study was to determine the best lactation curve. Data were collected from the dairy cattle breeding  unit at Ceylanpinar State Farm. Three different lactation curve models (Wood, Schaeffer, Glasbey) were applied to all data.  The values of the determination coefficients of three lactation curve models were estimated at 70.62-79.47%. Some negative  estimated values were obtained during the estimation of parameters. These results were restricted by the hypothesis and were  tested. All restrictions were accepted.  Total actual and mature equivalent (ME, 2x3057) milk yields were estimated. Differences between the actual values of lactation milk yield, and the estimated values of the Wood and Glasbey models were found to be non-significant. There were significant differences between the Schaeffer values and the other estimated values (p.

 

The purpose of this study was to determine the best lactation curve. Data were collected from the dairy cattle breeding  unit at Ceylanpinar State Farm. Three different lactation curve models (Wood, Schaeffer, Glasbey) were applied to all data.  The values of the determination coefficients of three lactation curve models were estimated at 70.62-79.47%. Some negative  estimated values were obtained during the estimation of parameters. These results were restricted by the hypothesis and were  tested. All restrictions were accepted.  Total actual and mature equivalent (ME, 2x3057) milk yields were estimated. Differences between the actual values of lactation milk yield, and the estimated values of the Wood and Glasbey models were found to be non-significant. There were significant differences between the Schaeffer values and the other estimated values (p.

Makale detayları

Investigation of Three Different Lactation Models in Milk Yields of Holstein Cows

Yazarlar:

Mehmet Nurullah ORMAN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Veterinary and Animal Sciences 1999 Vol.23 Issue 6, pp.605-614

Belge Tipi:

Makale

Yayın Tarihi:

5/1999

Belge Dili:

Türkçe

Document ID (Org No.):

2000771854

Sıklık:

İki Aylık

eISSN:

1303-6181

pISSN:

1300-0128

Cow

Holstein

Lactation Curve

Least Squares.

Sayı

Makale detayları

Investigation of Three Different Lactation Models in Milk Yields of Holstein Cows

Yazarlar: Mehmet Nurullah ORMAN

Yayıncı: TUBITAK

Dergi: Turkish Journal of Veterinary and Animal Sciences 1999 Vol.23 Issue 6, pp.605-614

Belge Tipi: Makale

Yayın Tarihi: 5/1999

Belge Dili: Türkçe

Document ID (Org No.): 2000771854

Sıklık: İki Aylık

eISSN: 1303-6181

pISSN: 1300-0128

Cow

Holstein

Lactation Curve

Least Squares.

Sayı

Yazarlar:

Mehmet Nurullah ORMAN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Veterinary and Animal Sciences 1999 Vol.23 Issue 6, pp.605-614

Belge Tipi:

Makale

Yayın Tarihi:

5/1999

Belge Dili:

Türkçe

Document ID (Org No.):

2000771854

Sıklık:

İki Aylık

eISSN:

1303-6181

pISSN:

1300-0128