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1

Milk as a new diagnostic tool for rapid detection of fascioliasis in dairy goats using excretory/secretory antigen

100%
Saad M. F., Attia M. M.
Acta Parasitologica
|
2021
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tom 66
|
nr 2
2

An alternative feeding system for dairy goats: Effects of free-choice feeding on milk yield and milk composition of lactating suckling Damascus goats

100%
Gorgulu M., Guney O., Torun O., Ozuyanik O., Kutlu H. R.
Journal of Animal and Feed Sciences
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2003
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tom 12
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nr 1
3

Genetic and environmental trends in Polish dairy goats

100%
Bagnicka E., Lukaszewicz M., Distl O., Hamann H.
Animal Science Papers and Reports
|
2002
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tom 20
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nr 4
4

Heritabilities and genetic correlations between the dairy traits in goats estimated in first vs later lactations

100%
Bagnicka E., Distl O., Hamann H., Lukaszewicz M.
Animal Science Papers and Reports
|
2004
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tom 22
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nr 2
The purpose of the study was to evaluate the multiple-trait model, as opposite to repeatability model approach, at an early stage of developing the breeding value estimation system for dairy goats in Poland. Milk, fat, and protein yields and fat and protein contents in first (4,443 records) and following parities (9,115 records of 5,244 goats) were analysed as two separate traits within a trait.Variance components were estimated with REML method. Classification of dairy traits in lactation I contained random effects of animal’s additive genetic background, herd-sire interaction, and fixe effects of herd-year-season, breed, year of birth, litter size, and linear regression on days-in-milk. Traits recorded in later lactations were considered to be the same within a trait, yet of repeated measurements.Hence, statistical model additionally accounted for fixed effect of parity and random effect of permanent environment. Heritability of milk yield ranged from 0.214 to 0.247 in later lactations, and from 0.190 to 0.324 in lactation I depending on set of traits which were estimated simultaneously. For lactation I the h2 for fat yield ranged from 0.208 to 0.224 and for later lactations from 0.204 to 0.216. Heritability for protein yield ranged from 0.130 to 0.208 for lactation I, and from 0.180 to 0.201 for later lactations. Heritabilities for fat content ranged from 0.278 to 0.318 in lactation I and from 0.214 to 0.243 in later lactations. Those for protein content were between 0.397 to 0.448 and 0.276 to 0.310 for lactation I and later lactations, respectively. Repeatability coefficients for all the dairy traits In the later lactations were between 0.247 to 0.355. Phenotypic correlations between lactations for each trait exceeded 0.50 while genetic correlations ranged from 0.880 to 0.996. Correlations between yields within lactation were high and positive while those between milk yield and milk constituents contents were moderate and negative. Presented correlations follow the general pattern found In other dairy goat as well as in dairy cattle populations. It is concluded that repeatability model should better suit Polish conditions.
5

Changes in selected blood metabolites assiociated with melatonin administration in dairy goats

100%
Darul K., Kruczynska H.
Folia Biologica
|
2004
|
tom 52
|
nr 3-4
6

Structure and the non-genetic and genetic effects on milk traits in Polish dairy goat population

84%
Bagnicka E., Hamann H., Distl O.
Animal Science Papers and Reports
|
2015
|
tom 33
|
nr 1
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 random effect on the herd-sire interaction, the fixed effects of herd-year-season of kidding interaction, breed, litter size, parity, year of birth and regression on day-in-milk. To estimate the co(variance) of the components of milk, fat, and protein yields, as well as fat and protein contents the REML method based on the repeatability animal model was applied. The average inbreeding coefficient was 0.61% (sd=3.12%). Milk, fat and protein yields were affected by all the factors except for breed. The nanny goats with more than two kids had higher milk, fat and protein yields,but they had a lower percentage of milk components than those with one kid or twins. The goats in their first lactation had the lowest milk, fat and protein yields, but the highest fat content. The heritability estimates were moderate (0.21, 0.18, 0.19 for milk, fat and protein yields, respectively).Repeatability estimates ranged from 0.30 for milk, 0.28 for fat, and 0.27 for protein yields, and 0.25 and 0.28 for fat and protein contents. Genetic correlations between milk yield and fat and protein contents were negative and moderate (-0.27 and -0.30), between fat and protein contents (0.58) while those between yields were ranged from 0.71 to 0.86. In turn, correlations between fat yield and its content, and protein yield and its content were positive and moderate (0.35, 0.23).
7

Effects of abomasal infusion of cottonseed oil and dietary enzyme supplementation on dairy goats

84%
Jalilvand G., Naserian A., Odongo N. E., Kebreab E., Valizadeh R., Eftekhar Shahrodi F., France J.
Journal of Animal and Feed Sciences
|
2007
|
tom 16
|
nr 3
389-396
8

Effect of the feeding period on the chemical composition and fatty acid profile of milk from French Alpine dairy goats

84%
Czarniawska-Zajac S., Brzostowski H., Zielazny M.
Polish Journal of Food and Nutrition Sciences
|
2006
|
tom 15/56
|
nr Spec.Issue 1
The chemical composition and fatty acid profile of milk from French Alpine dairy goats, obtained during the period of summer feeding and winter feeding, were studied. Milk samples were collected at one-month intervals, to determine dry matter, solids non-fat, protein, fat, fatty acid profile, lactose, urea and somatic cell count. The fatty acid composition of milk fat was determined for particular experimental twice during lactation, i.e. in the middle of the winter season and in the middle of the summer season. It was found that goat’s milk produced in winter had higher levels of dry matter, fat, protein and urea, and a lower lactose content. Goat’s milk obtained over this feeding period had a higher urea content. The somatic cell count recorded in milk from the experimental goats remained within the physiological norms for goat’s milk. The feeding period had a significant effect on the fatty acid profile of goat’s milk. Milk produced in summer had higher levels of unsaturated fatty acids, especially polyunsaturated fatty acids, as well as a more favorable ratio between unsaturated fatty acids and saturated fatty acids, and a lower ratio between monounsaturated fatty acids and polyunsaturated fatty aThe chemical composition and fatty acid profile of milk from French Alpine dairy goats, obtained during the period of summer feeding and winter feeding, were studied. Milk samples were collected at one-month intervals, to determine dry matter, solids non-fat, protein, fat, fatty acid profile, lactose, urea and somatic cell count. The fatty acid composition of milk fat was determined for particular experimental twice during lactation, i.e. in the middle of the winter season and in the middle of the summer season. It was found that goat’s milk produced in winter had higher levels of dry matter, fat, protein and urea, and a lower lactose content. Goat’s milk obtained over this feeding period had a higher urea content. The somatic cell count recorded in milk from the experimental goats remained within the physiological norms for goat’s milk. The feeding period had a significant effect on the fatty acid profile of goat’s milk. Milk produced in summer had higher levels of unsaturated fatty acids, especially polyunsaturated fatty acids, as well as a more favorable ratio between unsaturated fatty acids and saturated fatty acids, and a lower ratio between monounsaturated fatty acids and polyunsaturated fatty acids. Goat’s milk obtained over this period had higher concentrations of linoleic acid (C18:2), linolenic acid (C18:3) and conjugated dienes of linoleic acid.
9

Dairy goats - indicators of some zoonotic pathogens in the environment

67%
Stimbirys A., Bagdonas J., Jokimas J., Nekrosiene N.
Medycyna Weterynaryjna
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2006
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tom 62
|
nr 06
644-648
970 samples of Ixodes ricinus were collected in various areas within the investigated terrain in order to detect the causes of Tick Borne Encephalitis (TBE) in humans. At the same time the prevalence of antibodies to Toxoplasma gondii and TBE virus were detected in goat population within this area. Blood sera were tested by the Waldeland modified micro titration Dye Test (DT) for Toxoplasma gondii, and ELISA and HAI tests were also used to investigate seroprevalence to the TBE virus. It was found that 4 out of the 5 tested goats herds had Toxoplasma gondii and TBE virus antibodies. 52.63 % of small ruminants had antibodies to T. gondii and 11.8 % to TBE virus in the infected herds of the tested goats. Significant differences were also observed between age groups (P<0.05).
10

The effect of selenium supplementation to the diet of dairy cows and goats on production traits and animal health - a review

67%
Krzyzewski J., Bagnicka E., Horbanczuk J. O.
Animal Science Papers and Reports
|
2014
|
tom 32
|
nr 4
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 and immunological potential of these animals, in the reduced risk of mastitis, in the improvement of reproductive rate and increased Se transfer to cow foetus. The best results are obtained when the diet is supplemented with selenium yeast. The improvement in animal Se supply also has a positive influence on the increase of antioxidative properties of milk and meat. Further research in the field is necessary, connected among others with determining the relationship between the concentration of Se and antagonistic elements as well as vitamin E.
11
Content available remote

Cell junction disruption after 36 h milk accumulation was associated with changes in mammary secretory tissue activity and dynamics in lactating dairy goats

67%
Ben C. H., Lacasse P., Marnet P.-G., Wiatr-Letort S., Finot L., Boutinaud M.
Journal of Physiology and Pharmacology. Supplement
|
2009
|
tom 60
|
nr 3
105-111
12

Quality and composition of milk with different somatic cell count of two breeds of dairy goats

67%
Laurinaviciute V., Siugzdaite J., Urbsiene D.
Medycyna Weterynaryjna
|
2004
|
tom 60
|
nr 11
1168-1170
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