The aim of this study is to model milk yield
using the MARS method using independent variables such as Holstein cows control
day, milking time, conductivity and mobility. MARS is a non-parametric method
for predicting linear sub-models to determine appropriate knot points of
non-linear models. This study included daily lactation records for 80 Holstein
cows between 2006 and 2011. For each lactation, the most suitable model was
determined by testing different maximum interaction models. The model
suitability is generally assessed by the criteria that generalized
cross-validation criterion (GCV) minimum and R2 maximum values. When
these criteria are taken into consideration, the non-interactive model for the
first four lactations and the 3 interacting model for the fifth lactation are
determined as the best models. The determination coefficients (R2) of the MARS models according to the lactation order
are found to be 0.983, 0.991, 0.991, 0.975 and 0.950, respectively. All the independent variable coefficients in models
were found to be important at 99% level. In all models, MARS has been
identified as the most meaningful variable of control day. According to these
results, we can say that the estimation of milk yield of models produced by
MARS is successful and safe.
Parametrik olmayan regresyon modeli süt sığırcılığı süt verimi
Birincil Dil | Türkçe |
---|---|
Bölüm | ARAŞTIRMA MAKALESİ (Research Article) |
Yazarlar | |
Yayımlanma Tarihi | 15 Haziran 2018 |
Gönderilme Tarihi | 11 Ağustos 2017 |
Kabul Tarihi | 11 Eylül 2017 |
Yayımlandığı Sayı | Yıl 2018Cilt: 21 Sayı: 3 |
2022-JIF = 0.500
2022-JCI = 0.170
Uluslararası Hakemli Dergi (International
Peer Reviewed Journal)
Dergimiz, herhangi bir başvuru veya yayımlama ücreti almamaktadır. (Free submission and publication)
Yılda 6 sayı yayınlanır. (Published 6 times a year)
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