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The Effects of Teat End Hyperkeratosis and Body Dirtiness Scores on Milk Yield and Quality in Holstein-Friesian Cows

The Effects of Teat End Hyperkeratosis and Body Dirtiness Scores on Milk Yield and Quality in Holstein-Friesian Cows

Frederic Ndihokubwayo and Atakan Koç

ydın Adnan Menderes University, Faculty of Agriculture, Department of Animal Science, 09100, Aydın, Turkey.

 
*Correspondence | Atakan Koç, Aydın Adnan Menderes University, Faculty of Agriculture, Department of Animal Science, 09100, Aydın, Turkey; Email: akoc@adu.edu.tr

ABSTRACT

In this study, the effects of the body dirtiness score (BDS) and teat end hyperkeratosis score (TEHS) on milk yield and quality in Holstein-Friesian (HF) cows were determined. In the study, a total of 432 cows raised in 9 different dairy cattle farms in Aydın Province, Turkey, were inspected. In addition to measure milk yield (MMY, kg), the milk samples were taken from these cows during the morning milking for the determination of fat content (FC, %), non-fat dry matter content (NFDMC, %) and somatic cell count (SCC, cell/ml). The means for BDS, TEHS, MMY, FC, NFDMC and Log10SCC were 3.30±0.048, 2.17 ± 0.038, 13.92 ± 0.315 kg, 3.58 ± 0.039%, 10.14 ± 0.032% and 5.22 ± 0.024 (165 958 cells/ml), respectively. The effects of farm and parity (P < 0.01) on BDS and the effects of farm (P < 0.01), parity (P < 0.05) and lactation stage (P < 0.01) on TEHS and the effects of farm and lactation stage on MMY (P < 0.01) were statistically significant. Considering the milk quality traits, the effect of farm on FC (P < 0.01); the effects of farm, parity, calving season and lactation stage on NFDMC (P < 0.01) and the effects of farm, parity and TEHS on Log10SCC (P < 0.01) were found statistically significant. The Log10SCC positively correlated with the TEHS (r = 0.24; P < 0.01), but its correlation with BDS is very low (r = 0.07; P > 0.05). As a result, the BDS having no significant effect on milk yield and quality, the regular inspection of the TEHS could contribute to the amelioration of raw milk quality and decrease the SCC level in the milk.

 

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Veterinary Sciences: Research and Reviews

June

Vol. 7, Iss. 1, Pages 1-91

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