PREDICTION OF CARCASS WEIGHT OF HOLSTEIN AND BROWN SWISS CATTLE GROWN IN A 12-MONTHS INTENSIVE BEEF PRODUCTION SYSTEM BY USING REAL-TIME CARCASS MEASUREMENTS
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Tarih
2017
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Univ Agricultural Sciences & Veterinary Medicine Bucharest
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, it was aimed to evaluate the use of some morphometric carcass measurements to predict carcass weight of Holstein and Brown Swiss cattle grown in a 12-months intensive beef production system. Associations between carcass weights (CW) and some carcass measurements such as carcass heart girth (CHG), carcass length (CL) and carcass depth (CD) were examined for prediction ability, using the data with 134 observations for each traits. The linear, quadratic and cubic regression models were performed to predict CW for both breeds and since there were no statistically significant (P > 0.05) differences in carcass measurements between breeds. The data of these breeds were combined and found that CL and CHG would be the best possible traits in predicting CW (R-2 = 57.9 and 50.7% respectively) among the other measurements. The highest R-2 values were obtained from both the equation contained all carcass traits (R-2 = 65.5%) and the equation that included only CHG and CL (R-2 = 65.4%). All type of regressions showed that addition of quadratic and cubic terms contributed little benefit in predicting CW. Therefore, all linear terms of all carcass measurements were considered for analysis and they were significant (P. 0.05) and the R-2 value for other carcass measurement CD was approximately 20.8%. It can be concluded that in management situations where CW cannot be measured it can be predicted accurately by measuring CL and CHG alone and different models may be needed to predict CW in different feeding and environmental conditions and for other breeds.
Açıklama
Anahtar Kelimeler
Prediction, Carcass weight, Carcass measurements, Brown Swiss and Holstein cattle, Feedlot
Kaynak
Scientific Papers-Series D-Animal Science
WoS Q Değeri
N/A
Scopus Q Değeri
Cilt
60
