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1

Analiza rynku mięsa owczego w Polsce w latach 2004-2014

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Peter E., Bernacka H., Kasperska D., Mistrzak M.
Wiadomości Zootechniczne
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2016
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tom 54
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nr 4
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The correlations between milk yield of goats and some milk nutrient content during a 3- and 5-month lactation and a full lactation

100%
Bernacka H., Mistrzak M., Kasperska D.
Acta Scientiarum Polonorum. Zootechnica
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2011
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tom 10
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nr 3
Atotal of 203White Improved goats from a farm in Rożnów (Kujawsko-Pomorskie province) were investigated in 2007–2009. The study attempted to simplify the current goat milk recording scheme and make it more accurate by shortening of the evaluation time and finding optimumlactationmonths for recording. In order to reach this aim, coefficients of phenotypic correlation were calculated using the multiple regression method between the yield and basic composition of milk over a 90- and/or 150-day lactation and the same traits for a full lactation taking into account the lactation number. The lactation length inWhite Improved goats varied according to the lactation from 228 days (1st lactation) to 303 days (3rd lactation), with the daily milk yield from1.90 kg to 2.60 kg. and the fat content of 3.10–3.30%and protein content of 2.80–2.90%. High and significant coefficients of phenotypic correlation between milk yield and composition over the 90- and 150-day lactation and the same traits over a whole lactation prove that every variant of the shortened recording may serve as a basis for the evaluation of goats before the lactation ends. Slightly higher coefficients of correlation (mostly above 0.900) found for the 5-month compared to the 3-month recording show that the evaluation encompassing four controlmilkings over a whole lactation ismore accurate. However, the 3-month recording during summer months is economically more beneficial. Shortening the frequency of controlmilkings followed by the reduction of costs will enable a greater number of goat herds to be recorded, which is of considerable importance to the efficiency of the breeding programme.
3
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Effect of age and sex on body weight and body dimensions of Pearl grey Guinea fowl (Numida meleagris L.)

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Kasperska D., Korytkowska H., Kokoszynski D.
Acta Scientiarum Polonorum. Zootechnica
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2011
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tom 10
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nr 3
Sixty pearl grey guinea fowl were investigated. Birds were kept in a closed facility without regard to sex. For the first three weeks, guinea fowl were kept in boxes on plastic mesh floor, and then in straw-bedded pens. They were fed commercial mash diets for turkeys or hens. At the end of 13 and 52 weeks of age, body weight was determined and birds selected for slaughter were subjected to body measurements.As guinea fowl aged, their body weight and body dimensions increased except for lower leg length in males. Compared to 13-week-old males, males aged 52 weeks had significantly higher body weight and highly significantly higher sternum length and chest circumference. As females aged, their body weight, lower leg length and chest circumference increased highly significantly, and sternum length and shank length increased significantly. Males compared to females were characterized by lower body weight at both evaluation times, and by significantly shorter lower leg at 52 weeks of age. The body conformation indices of massiveness, compactness and long-leggedness were higher in older birds.
4

Effect of age and sex on digestive tract morphometry of guinea fowl (Numida meleagris L.)

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Kasperska D., Kokoszynski D., Korytkowska H., Mistrzak M.
Folia Biologica
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2012
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tom 60
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nr 1-2
5

Performance evaluation of Alpine and Saanen goats in Poland in the years 2000–2011

100%
Bernacka H., Peter E., Kasperska D., Mistrzak M.
Polish Journal of Natural Sciences
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2013
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tom 28
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nr 3
Our study was based on the following data provided by the Central Statistical Office and the Polish Goats Breeders Association for the years 2000–2011: the total of all goats in Poland, including the Alpine and Saanen breeds; the number of goats under performance evaluation; milk and reproductive performance results. To determine developmental directions of the traits in the analysed period, we used the trend method; and to calculate the trends, we used a first degree linear function. Among the Polish goats evaluated in 2011, the most numerous is the Boer breed (meat), which constitutes 45.87% of the total; whereas among milk breeds, the most popular are the White Improved (14.95%), Coloured Improved (9.79%), Saanen (6.19%) and Alpine (4.64%). Reproductive performance for the Alpine goats was 83.5% to 100%, and for the Saanen goats 73.3% to 100%; whereas prolificacy was respectively 139.6% to 193.3%, and 126.1% to 213.1%. Analysing trend lines of milk performance traits in the examined goats in the years 2000–2011, we observed an extension of the milking period by approx. 2.5 days per year, as well as an increase of milk yield per lactation by approx 1.7 kg (Alpine breed) and approx. 1.6 kg (Saanen breed), fat yield by approx 0.5 kg and approx 0.9 kg, and protein yield by approx 0.4 kg and 0.5 kg per year. All milk from evaluated goats had similar fat and protein content.
6

Zachowanie owiec rasy wrzosówka na murawach kserotermicznych

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Bernacka H., Niedzwiecki P., Kasperska D., Peter E.
Przegląd Hodowlany
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2013
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tom 81
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nr 4
The study concerned observation of the behavior of Wrzosówka in xerothermic grasslands. The observations were conducted in xerothermic grasslands: 1 in the Lubuskie voivodeship and 6 - in Western Pomerania, during the period from 1 July to 30 September 2011. The tested flock consisted of 60 breeds of Wrzosówka sheep and 2 moggie goats. During the observations, particular attention was paid to the behavior of animals during grazing including: herd behavior, vital signs as well as response to various stimuli and external factors. The sheep communicated with each other through sound, the sense of smell, hearing and sight. The hierarchy, as being observed in vital signs was subordinated to goats. Goats dominated during the competition for feed, water, and the best sleeping place, at the same attacking sheep. Plant species which were consumed most often by both sheep and goats included: black locust, plum blackthorn, young shoots of grass seedlings of deciduous trees. After the last feed during the day, the herd was going slowly in a quiet place, sheltered from the wind. Older sheep formed a compact group In the middle, driving out younger animals. Goats took place next to the sheep, but did not form a compact group with them. At the presence of badger close to the fence of the grassland, sheep concentrated in a compact group, and struck the feet the soil surface. After two hours of such behavior, badger departed. The presence of a Scenthound Bavarian dog on the quarters was accepted by the sheep completely after two months of common residence.
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