Acta Univ. Agric. Silvic. Mendelianae Brun. 2017, 65(4), 1149-1160 | DOI: 10.11118/actaun201765041149

Somatic Cell Count and Milk Yield Losses in Goats

Oto Hanuš1, Petr Roubal1, Josef Kučera2,3, Marcela Klimešová1, Radoslava Jedelská1, Jaroslav Kopecký1
1 Dairy Research Institute, s.r.o., Ke Dvoru 12a, 160 00 Prague 6, Czech Republic
2 Czech-Moravia Breeders Corporation a.s., Benešovská 123, 252 09 Hradištko, Czech Republic
3 Department of Animal Breeding, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic

This work is aimed at prediction and quantification of goat milk yield (MY, kg) losses by the somatic cell count (SCC, 103.ml-1) in milk recording. The goal is to support the prevention of milk secretion disorders, milk yield and quality. During two years there were evaluated composition and properties of individual milk samples (n = 1 173). There were included animals of brown short-haired (BSH) breed and BSH × white short-haired in one flock. The linear and nonlinear regression, interpolation, extrapolation, approximation and qualified estimation were used for milk losses prediction along the SCC. The relevant values of the SCC arithmetic and geometric mean and median and MY arithmetic mean were: 1,400 103.ml-1 (with high variability of 128 %), 745 and 747 103.ml-1; 2.94 kg/day. The relationship between fat and crude protein had a correlation coefficient of 0.395, P < 0.001. There were stated the correlations between SCC and: lactose -0.416, P < 0.001; solids non fat -0.25, P < 0.001; MY -0.135, P < 0.01. The relationship between SCC and MY was negative along months, 6 cases out of 7 and significant in March and May (P < 0.05 and P < 0.01). For instance predicted MY for SCC intervals 1-1.999, 2-2.999, 3-3.999, 4-4.999, 5-5.999, 6-6.999 and ≥ 7 thousands 103.ml-1 may be 3.99, 3.77, 3.6 , 3.46, 3.33, 3.23 and 3.13 kg in 3rd month etc. The corresponding MY losses by SCC are evident from this trend. The result use is focused on the original dairy goat farm and use elsewhere is possible in farms with similar SCC, goat milk yield and rearing system.

Keywords: individual goat milk, lactation, fat, crude protein, lactose monohydrate, milk secretion disorders, milk recording
Grants and funding:

This work was supported by Ministry of Agriculture projects MZe RO1417, NAZV KUS QJ1230044 and QJ1210301.

Published: September 1, 2017  Show citation

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Hanuš, O., Roubal, P., Kučera, J., Klimešová, M., Jedelská, R., & Kopecký, J. (2017). Somatic Cell Count and Milk Yield Losses in Goats. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 65(4), 1149-1160. doi: 10.11118/actaun201765041149
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