Wyniki wyszukiwania - AGRO

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Relationships between sire effect, milk production in young cows and their productive longevity

100%

Konsowicz K., Pogorzelska J., Micinski J., Sobotka W., Zwierzchowski G.

Medycyna Weterynaryjna

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2013

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tom 69

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nr 10

The objective of this study was to determine relationships between sire effect, milk production in young cows, their performance in subsequent lactations, fertility, conformation and productive longevity. A total of 1724 cows that first calved between 2003 and 2005 were analyzed during 4475 lactations. The cows were kept in 10 barns located in the Provinces of Pomerania and West Pomerania, Poland. The analysis covered 1085 daughters of 145 local Polish Holstein-Friesian (PHF) sires and 639 daughters of 128 imported Holstein-Friesian (HF) sires, including 437 cows culled after the first lactation, 445 cows culled after the second lactation and 140 long-lived cows. Research has shown that among first-calf heifers and the second lactation cows more than 55% of daughters of imported bulls and about 48.75% of daughters of domestic bulls were culled. Essentially higher results of sort ratings concerning the overall appearance, body conformation, udder quality and frame size, efficiency of milk and its components were acquired after the imported bulls. High milk production levels, exceeding 8000 kg of milk in the first and second lactation, had an adverse effect on the productive life of cows. A correlation between milk production of milk cows and their productive longevity was proved as evidenced by the fact that cows which were used for at least five lactations produced less milk and its components as the first-calf heifers than cows which were scrapped later.

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Performance of young boars depending on the litter size

100%

Kawecka M., Jacyno E., Matysiak B., Kolodziej-Skalska A., Kamyczek M.

Acta Scientiarum Polonorum. Zootechnica

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2013

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tom 12

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nr 3

The material consisted of 60 hybrid boars, from line 990 (female) and Pietrain breeds (male), divided into two groups depending on the litter size in which they were born and reared - group: 7-10 piglets (average 8.8) per litter; group: 11-17 piglets (average 12.5) per litter. The mean body weight of 21 day of live piglets born and reared in larger litters was significantly (P < 0.05) lower than among boars reared in smaller litters. This difference gradually diminished and at day 63 of life both groups had the same average body weight. In the period from 63 to 180 day of life, the boars from smaller litters had a slightly lower rate of growth (statistically insignificant). Boars reared in larger litters at 180 day of life were on average 3 kg heavier. There were no significant differences in fat thickness, lean meat and testicular volume between the assessed groups of young boars. From boars reared in smaller litters ejaculates had a significantly higher (P < 0.05) sperm concentration and total sperm volume.

3

Fattening and slaughter traits of young boars depending on their growth rate

100%

Nowachowicz J.

Annals of Animal Science

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2011

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tom 11

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nr 3

4

Comparison of meat quality of the Polish Red-and-White and Simmental young bulls

100%

Sosin-Bzducha E.

Annals of Warsaw University of Life Sciences - SGGW. Animal Science

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2017

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tom 56[1]

Comparison ofmeat quality of the Polish Red-and-White and Simmental young bulls. The experiment used meat from 16 bulls of the Polish Red-and-White (ZR) (n=8) and Simmental (SM) (n=8) breeds. Samples of the longissimus lumborum muscle (MLL) were analyzed for basic chemical composition and fatty acid profile of intramuscular fat. Physicochemical and organoleptic properties of meat were evaluated. No differences were found in basic chemical composition of the meat. Intramuscular fat from ZR bulls had a notably lower proportion of polyunsaturated fatty acids (PUFA), but a more favorable n-6/n-3 fatty acids ratio in MLD than meat from Simmental breed. Sensory assessment showed that meat from the conservation breed received higher scores due to greater juiciness, more delicate texture and better aroma.

5

Ultrastructure of the pineal gland in 3 months old pigs

100%

Przybylska B.

Folia Morphologica

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1988

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tom 47

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nr 1-4

6

Young chinchillas weight gain, depending on their body mass at birth

100%

Dzierzanowska-Goryn D., Brzozowski M., Goral-Radziszewska K.

Annals of Warsaw University of Life Sciences - SGGW. Animal Science

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2014

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tom 53

Young chinchillas weight gain, depending on their body mass at birth. The aim of the study was to determine if the results of raising and growth for up to 4th months of age in chinchilla depends on body weight and the litter size at birth. There were also attempts to answer the question, when sexual dimorphism begins to be visible in young chinchillas. Males are heavier females from the first month of life in chinchilla, however up to the 4th months of age the differences are not statistically significant. During the study it was found, that young chinchillas mortality depends on their body weight at birth. When the body weight at birth is higher, the greater chances of survival of the young are. Number of puppies in the litter affects their body weight: the more young per litter are, the less average body weight is.

7

Prediction of the carcass value of young Holstein-Friesian bulls based on live body measurements

100%

Pogorzelska-Przybylek P., Nogalski Z., Wielgosz-Groth Z., Winarski R., Sobczuk-Szul M., Lapinska P., Purwin C.

Annals of Animal Science

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2014

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tom 14

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nr 2

8

The leptin gene polymorphism and the production traits in the young boars

100%

Kolodziej A., Pietruszka A., Jacyno E., Kawecka M., Stepien-Poleszak D., Sobocinska A.

Acta Scientiarum Polonorum. Zootechnica

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2009

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tom 08

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nr 1-2

11-17

9

Influence of age on biochemical parameters in calves

100%

Jezek J., Klopcic M., Klinkon M.

Bulletin of the Veterinary Institute in Puławy

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2006

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tom 50

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nr 2

10

Meat content of young crossbred boars with Pietrain and Belgian Landrace breeding

84%

Michalska G., Nowachowicz J., Chojnacki Z.

Annals of Animal Science. Supplement

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2005

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nr 2

11

Ocena wartości hodowlanej buhajków w centralnych wychowalniach. III. Oszacowanie parametrów genetycznych i wartości hodowlanej buhajków

84%

Zarnecki A., Brzozowska-Reiter D.

Zeszyty Problemowe Postępów Nauk Rolniczych

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1990

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tom 395

Genetic parameters were estimated for the body weights, daily gains and body measurements of young bulls at central rearing stations. The data included 5512 black-and-white bulls and 1186 Holstein-Friesian (HF) and 1/2 HF bulls bom during 1981 - 1984 and 3959 black-and-white, 2098 HF and 1/2 HF bom during 1985 - 1987. The values of genetic parameters estimated in both periods were similar. Heritabilities of body weights at 120 and 360 days and average daily gains were between 0,21 to 0,29; estimates of heritabilities for heart girth and height at withers were slightly higher. The highest genetic correlations were found between body weight at 360 days and average daily gain. For bulls bom between 1981 and 1984 the BLUP method was used to evaluate predicted differences (1/2 of breeding value) in body weight at 360 days and average daily gains of young bulls. Averages of predicted differences calculated for each rearing station yielded small genetic differences among them. In addition, the predicted differences were evaluated for bulls’ sires based on their sons performances.

12

Fattening results and slaughter quality of young bulls fed different diets in the last four months before slaughter

84%

Smiecinska K., Wajda S.

Annals of Animal Science. Supplement

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2005

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nr 2

13

Einfluss der Verabreichung von Braunkohlenextrakt den Neungeborenen Kalbern auf die Ausgewahlten hamatologischen und biochemischen Blutparametern

84%

Chudoba-Drozdowska B., Janeczek W., Pelka A.

Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Zootechnika

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1995

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tom 40

Viele Zuchtbetriebe wenden das ganze Jahr hindurch die Fütterung der Kühe mit Silage zu, die manchmal, vor allem im Frühjahr, von schlechter Qualitet ist. Oftmals berücksichtig man nicht den physiologischen Zustand der Tiere, indem man ihnen groβe Silagengabe sogar in der Hochträchtigszeit verabreicht. Das verurscht bei den Kühen das Auftreten von metabolischen Störungen z.B. Acidosis [1, 5, 6, 10]. Diese Störungen werden dann auf das Fötus übertragen, da die Plazenta in diesem Fall nicht genügend Schutz leistet. Die Kälber, die von solchen Müttern stammen, kommen zur Welt schwach mit einem Durchfall und verenden oft [2, 7, 9]. Die Autoren der Vorgelegten Arbeit versuchten die bei den Kälbern vorkommenden Störungen durch das Verabreichen von einen Braunkohlenextrakt zu korrigieren, in dem sie teure und nicht immer sichere pharmakologische Präparate ersetzen wollten.

14

Effect of metabolic disorders accompanying gastroenteritis on the pancreatic exocrine function in piglets. A. Metabolic disturbances in piglets with gastroenteritis

84%

Rychlik A.

Polish Journal of Veterinary Sciences

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2002

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tom 05

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nr 3

15

Performance test results of young crossbred boars with Zlotnicka Spotted and Pietrain breeding

84%

Michalska G., Chojnacki Z.

Annals of Animal Science. Supplement

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2005

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nr 1

16

Effects of mineral deficiency on the health of young ruminants

84%

Radwinska J., Zarczynska K.

Journal of Elementology

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2014

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tom 19

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nr 3

Twenty-two elements have been identified as essential to the growth and health of animals. They include 7 macroelements and 15 microelements, which play four key functions in the body: structural, physiological, catalytic and regulatory. Mineral deficiencies can result from low quality feed, impaired absorption or assimilation in the body or increased demand for minerals during intensive growth, pregnancy and lactation. Mineral-deficient feed and diets with an unbalanced mineral content impair the growth and development of young animals, decrease appetite, lower nutrient absorption, decrease immunity and increase susceptibility to contagious diseases. This paper discusses the consequences of low levels of macronutrients and micronutrients that are required for the optimal growth of calves, lambs and kids, including calcium, phosphorus, magnesium, selenium, cobalt, iron, zinc, copper, sodium, potassium and chloride.

17

Genetic and environmental effects on body weight and fur hight in nutria [Myocastor coypus L.]

84%

Cholewa R., Pawliczak-Maj K., Szwaczkowski T.

Electronic Journal of Polish Agricultural Universities. Series Animal Husbandry

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2006

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tom 09

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nr 2

The objectives of the study were to estimate chosen effects (sex, color variety, farm and partitution) on body weight and hair layer hight characters as well as correlations between these traits. Furthemore, heritabilities of traits studied were also estimated. The research was carried on three reproductive farms keeping animals in four basic coat varieties: standard, Sapphire blue, Greenland and white. In the experimental group 919 young nutrias were included and the following steps were executed: – body weight was measured, – hight of underfur and guard hairs. Estimation of heritability was based on unitrait animal model. Standard errors of heritability estimates were approximated based on second order polynomials. The package program DFREML was employed. Correlation coefficients were estimated in the SAS system. Heritability estimates of hair traits were high. The highest estimate (h2 = 0.623) was obtained for lateral guard hairs height. The estimates of other three traits were slightly lower and ranged from 0.49 (lateral underfur) to 0.58 (dorsal underfur). Higher heritability was estimated for fur characters than for body weight. Linear correlations were estimated between all traits. Some of the estimates were close to zero. The highest correlation was recorded for the height of the same hair types.

18

Effect of low-level administration of fructooligosaccharides and inulin to young turkeys on caecal fermentation

84%

Jankowski J., Juskiewicz J., Zdunczyk Z., Mikulski D.

Polish Journal of Natural Sciences. Supplement

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2006

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tom 03

403-408

19

Evaluation of thickness and color of wool in primiparas of Zelaznienska and Corriedale sheep

84%

Kulesza D., Mozga K., Niznikowski R., Strzelec E., Swiatek M., Slezak M.

Annals of Warsaw University of Life Sciences - SGGW. Animal Science

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2014

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tom 53

The study was conducted on 19 samples of wool of Żelaźnieńska Sheep and 28 samples of wool of Corriedale Sheep. The thickness of fi bre and rendement were examined. The color of wool were measured by colorimetric technique. Basis of studies found a wider range of thicknes fi bre of Corridale Sheep and narrow range of thickness fi bre of Żelaźnieńska Sheep compared with the standards. Particular importance is to eliminate from the breeding primiparas Corriedale Sheep characterized by nominal thickness of fi bers 25 μm and less. Average nominal thickness of the fi bers were consistent with the cited standards. In Żelaźnieńska Sheep breed obtained, positive and highly signifi cant correlation coeffi cients of rendement and thickness to brightness (L*) and found a signifi cant correlation coeffi cient between rendement and the share of yellow color (b*). In Corriedale Sheep found positive and signifi cant statistical correlation coeffi cient between the brightness (L*) and nominal thickness. Correlations between traits characterizing the color of wool, and in particular the measurement of brightness (L*), to features such as the nominal thickness of the fi bers, indicate different trends occurring in Żelaźnieńska Sheep and Corriedale Sheep.

20

Emotional response of young race horses to a transfer from a familiar to an unfamiliar environment

84%

Janczarek I., Kedzierski W.

Animal Science Papers and Reports

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2011

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tom 29

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nr 3

The aim of this study was to measure emotional arousal in young race horses as expressed by heart rate (HR) during routine situations of grooming, hoof cleaning, and while at rest, having been transported from the environment of home stud farm to that of an unfamiliar training centre. A hypothesis was developed that the change of environment is a source of heavy stress for young race horses. The investigation involved 22 Purebred Arabian stallions and 19 Purebred Arabian mares, 2.5 years old, and 11 Thoroughbred stallions and 10 Thoroughbred mares, at the age of 1.5 years. The horses were examined twice: first in their home stud farms, and then three days after being moved to an unfamiliar training centre. The HR was measured at rest and while the horses were being groomed in their boxes. The HR registered during the grooming session at the new stable increased significantly in all studied groups of horses compared to the data obtained at their home stud farm. This increase was significantly higher in the groups of 1.5-year–old Thoroughbred stallions and mares than in the groups of 2.5-year-old Purebred Arabian horses. Young race horses should not be groomed just before training because the grooming routine involves their emotional arousal.

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