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The aim of the study was to analyze the occurrence of caprine arthritis encephalitis virus (CAEV) in white improved goats, colored improved goats, Saanen goats, Alpine goats and Boer goats, raised in three regions of Poland. The analysis of CAEV infection levels was carried out in goat herds from the provinces in mid-Eastern Poland. The analysis included four goat herds. In total, they encompassed...
The aim of the study was to estimate the heritability and repeatability of somatic cell score (SCS) and lactose content, and also the genetic correlation between those and other dairy production traits. Milk yield, fat, protein and lactose content, and somatic cell count were recorded once a month for 11 years in a single herd, resulting in 4 417 records from 282 does. The number of animals in pedigree...
This article explored the formation of volatile compounds during the production of kefir from goat and sheep milks with high polyunsaturated fatty acids (PUFA) as a result of feeding animals forage supplemented with maize dried distillers grains with solubles (DDGS). The increased PUFA content of the goat and sheep milks resulted in significant changes to the fermentation process. In particular, apart...
The aims of this study were to analyse the structure of Polish dairy goat population and to estimate the non-genetic and genetic sources of variation in five milk traits. The data set comprised 18,563 lactation records of 8,938 dairy goats, while the pedigree file covered information on 13,159 animals 6 generations deep. To estimate the environmental effects the GLM procedure, using a model with the...
The content of bioactive components in dairy products depends mainly on their content in raw milk and on the technological production process. The experiments were performed on the milk collected from dairy sheep receiving concentrated feed without (control group) and with a 12% addition of gold of pleasure (experimental group). Adding Camelina sativa cake to the feed led to an increase in the share...
Diagnostic performance of ID Screen® MVV-CAEV Indirect Screening ELISA in identifying goats infected with small ruminant lentiviruses (SRLV) was evaluated. In total 299 serum samples from the collection of the Laboratory of Veterinary Epidemiology and Economics - 109 truly positive and 190 truly negative - were used. To be enrolled in the study a serum sample had to come from at least 2 year-old goat...
The aim of the study was to evaluate the impact of diet supplementation with active yeast culture (Saccharomyces cerevisiae) on the expression of selected immune system genes in goat milk somatic cells (MSC) and on milk production traits. Eighteen dairy goats were divided by breed and parity into two groups: control (n = 9) and supplemented (n = 9). Each group consisted of 5 Polish White Improved...
The results of studies conducted so far in the field of supplementing Se deficiency in cow and goat diets demonstrate unequivocally the positive influence of supplements used on the improvement of the health status of animals and an important increase in the concentration of this microelement in the obtained milk. The positive influence on health is reflected in the increased antioxidative status...
The aim of this study was to evaluate the effects of somatic cell count and the polymorphic form of β4-defensin on the concentration of free fatty acids (FFA) and physico-chemical characteristics of cow’s milk. The study was carried out on 120 Polish Holstein-Friesian Black and White dairy cows.The animals were maintained in a loose barn and fed with the TMR system according to the INRA norm. The...
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