Relationships among udder conformation, productive traits and milk somatic cell counts in Friesian cows under the Egyption farm conditions.
2011
Tag El-Dein, M.A. | Genena, Sh.K.
Ninety-eight Friesian cows were classified according to udder shape and teat orifice shape. Also, 18 udder and teat measurements (cm) were taken at the different months of lactation. Effects of parity, month and year of calving, udder shap and teat orifice shape across the first five lactations and the correlation coefficients (R) were studied. Traits under investigation were lactation period, total milk yield, 305 days milk yield, somatic cell count (SCC) and both of percentage (%) and yields of fat, protein and lactose. Milk composition, milk yield and SCC were estimated as monthly milk samples for analysis. The (R) between udder measurements (udder length) and SCC were positive and highly significant (P0.01). The (R) between teat measurements and SCC were positive in most cases and negative (distance between fore teats) in some cases ,except the distance between rear teats and circumference of rear left teat had positive and highly significant (P0.01) correlated with SCC. The cows with pendulous udder shape and funnel teat orifice shape had higher milk SCC.
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