Wyniki wyszukiwania - Biblioteka Nauki

1

Efektywnosc uzytkowania mlecznego i rozplodowego krow ras czerwono-bialych w roznych systemach utrzymania

100%

Kuczaj M.

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nr 02

137-140

EN

The aim of the study was to determine the influence of the maintenance system on chosen production and reproduction features in the life span of cows of Red-White breeds maintained in environmental-feeding conditions that occur on individual farms of south-east Poland (Podsudecie). Research covered 237 cows of Polish Holstein-Friesian breed of Red-White variety and Polish Red-White breed kept indoors in two different systems of management: stanchion and loose. It was proved that the system of cows’ management significantly (p ≤ 0.05) differentiated the yield and chemical composition of milk in the first and third 305-days lactation, life yield, and yield of milk, fat and protein per 1 day of performance. An average milk yield in I 305-day lactation was significantly higher (of 291 kg) with lower (p ≤ 0.05) fat content (of 0.18%) in the milk of cows kept in the loose system in comparison to cows on a tether. The life production of cows in a loose management system was significantly higher by 16 527 kg of milk, 604.2 kg of fat and 529.9 kg of protein when compared to the stanchion system. As calculated for 1 day of performance, the highest milk (17.4 kg), fat (0.69 kg) and protein (0.56 kg) yield was characteristic for cows kept in loose barns, while the lowest (14.6, 0.63 and 0.49 kg, respectively) in stanchion barns. Cows in loose barns were significantly younger for their first calving (of 2.9 month), have slightly shorter inter-calving intervals, and the period of their performance was significantly longer (of 1.97 years) in comparison to cows in stanchion barns. Loose housing of cows turned out to be justified in climatic-soil conditions of Podsudecie, thus it is worth propagating since it guarantees that dairy cattle breeders obtain more beneficial results of milk and reproduction performance as opposed to cows in stanchion barns.

2

Wyniki krzyzowania bydla czarno- i czerwono-bialego z rasa holsztynsko-fryzyjska w Polsce w latach 1991-1999

100%

Kuczaj M.

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tom 57

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nr 06

437-440

3

Ksztaltowanie sie masy ciala cielecia w 1 i 5 dniu zycia w zaleznosci od jego plci, wieku matki i przebiegu porodu

100%

Kuczaj M.

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2004

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tom 51

131-136

PL

Badano wpływ przebiegu porodu, kolejności wycielenia krów i płci noworodków na wyniki odchowu 106 cieląt rasy czarno-białej. Odnotowano dwa rodzaje porodów: 1 - poród łatwy - ocielenie spontaniczne, II - poród trudny - ocielenie ze znaczną pomocą człowieka. Efekty odchowu cieląt w okresie żywienia ich siarą zależą istotnie od stopnia trudności porodu, wieku matki oraz płci noworodków. Potomstwo pochodzące od krów wieloródek oraz z trudnych porodów, a także cielęta płci męskiej uzyskiwały istotnie korzystniejsze wskaźniki odchowu.

EN

The aim of this work was to estimate influence of the calving performance, order of calving and newborns sex on the raising results of 106 Black-White calves. Two types of delivery were registered: 1 - „easy delivery" - spontaneous calving, II - „difficult delivery" - hard calving, with considerable help of human. The effects of calves rearing in the period of feeding by colostrum depend in an important way on the degree of difficulty in delivery, as well as mothers age and the sex of newborns. Progeny, which comes from multiparous cows and was born in a difficult delivery, as well as calves of male sex, obtained in an important way more profitable rate of rearing

4

Wyniki odchowu cielat w okresie zywienia siara w zaleznosci od sezonu wycielenia i dlugosci zasuszenia krow

100%

Kuczaj M.

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2004

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tom 51

137-141

PL

Badania przeprowadzono w fermie bydła mlecznego zlokalizowanej w zachodniej Polsce. Stwierdzono, że sezon wycielenia krów nie różnicuje istotnie masy ciała zwierząt w 1 i 5 dniu ich życia. Cielęta z wycieleń zimowych rozwijały się istotnie (p≤ 0,01) lepiej (0,560 kg·dobę⁻¹) od urodzonych w sezonie letnio-jesiennym (0,350 kg dobę⁻¹). Długość okresu przygotowania krów do laktacji istotnie (przy p≤ 0,05) wpływa na tempo przyrostów dobowych cieląt, natomiast nie różnicuje istotnie masy ciała cieląt w okresie odchowu.

EN

The research was carried out in the dairy cattle farm, located in western Poland. The calving season for cows (n=l 06) doesn't influence in an important way the body weight of the animals on their 1st and 5th day of life. Calves from winter calving developed in an important way (p≤ 0,01) better (0.560 kg day ) in comparison with calves born in the summer-autumn time (0.350 kg-day1). Duration of the period of preparing of cows for lactation, influences in a important way (by p≤ 0,05) on the rate of daily increases, however, doesn't influence in an important way the body weight of calves in their rearing period.

5

Analiza wartosci uzytkowej krow rasy czarno-bialej importowanych z Holandii i ich rowiesnic ras czarno- i czerwono-bialej odchowanych w kraju

100%

Kuczaj M.

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nr 12

1317-1319

6

Porownanie wydajnosci mlecznej krow rasy czarno- i czerwono-bialej utrzymywanych w tych samych warunkach srodowiskowych

63%

Kuczaj M. , Blicharski P.

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nr 03

293-296

7

Sprzęgła podatne skrętnie i zespoły sprzęgłowe w układach napędowych przenośników zgrzebłowych

63%

Filipowicz K. , Kuczaj M.

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tom T. 74, nr 4

1--9

PL

W opracowaniu zaprezentowano innowacyjne sprzęgło podatne skrętnie do zastosowania w układzie napędowym górniczego przenośnika zgrzebłowego na tle innych aktualnie stosowanych rozwiązań konstrukcyjnych. Omówiono stosowane sposoby łagodzenia negatywnych skutków rozruchu. Przedstawiono zalety i wady poszczególnych konstrukcji sprzęgieł.

EN

This paper presents an innovative torsionally flexible coupling, for use in the drive system of mining scraper conveyor, in the light of other currently used design solutions. Methods of mitigating the negative effects are described. Advantages and disadvantages of individual coupling designs are presented.

8

Zasady wyboru stada buhaja

63%

Kuczaj M. , Woznicka H.

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nr 2

9

Próba oceny wpływu masy ciała buhajów w wieku 360 dni na niektóre cechy ich nasienia

63%

Kuczaj M. , Pawlina E.

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nr 05

RU

Исследования провели на станции осеменения животных в Клодзке. Ими объято 80 быков низинной красно-пестрой породы, пользуемых на этой станции в 1976—1983 гг. Быков разделили на 4 группы в зависимости от их массы тела в возрасте 360 дней, составляющей один из критериев их индивидуальной оценки. Для каждой группы подсчитали средние величины: общего количества семени, объема эякулятов и концентрации живчиков в первом и втором году пользования, Отметили отсутствие существенных разниц относительно количества и качества семени, полученного от быков разной массы тела возрастом 360 дней в двух первых годах их племенного пользования. В отдельных же группах быков отметили существенные разницы относительно общего количества семени и объема эякулятов, полученных от них в первом и втором году пользования.

EN

The examinations were carried out on 80 bulls in the Breeding and Insemination Unit in Kłodzko. The animals of Lowland Red-White breed were used in 1976—1983. The bulls were allotted into four groups according to their body weight, aged 360 days; this element was one of criteria applied to assess individual animals. For each group of bulls the- following values were determined; the amount of semen, the volume of ejaculates, and the concentration of sper- matozoons in the first and second year of production. No differences were found in relation to the quantity and quality of the semen obtained from bulls of various body weights aged 360 days in the first two years of breeding exploitation. In individual groups of the bulls significant differences regarding the amount of the semen and the volume of ejaculated were noted.

10

Premiksy dla bydla

63%

Kuczaj M. , Woznicka H.

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nr 12

20-22

11

Analysis of correlations between selected blood markers of liver function and milk composition in cows during late lactation period

51%

Mordak R. , Kupczynski R. , Kuczaj M. , Nizanski W.

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nr 3

12

Relations between milk performance and udder dimensions of Black-White cows imported from Holland

51%

Kuczaj M. , Kruszynski W. , Pawlina E. , Akincza J.

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nr 2

EN

Associations between performance of milk production and udder dimensions of 54 cows imported from Holland and kept in OHZ Kamieniec Zšbkowicki are described. Udder build of analysed animals scored very good but teats were slightly too short. Correlation coefficients between milk production performance traits and indices of udder dimensions were low and statistically insignificant.

13

Relations between body frame and milk performance of Black-White cows imported from Holland

51%

Kuczaj M. , Pawlina E. , Kruszynski W. , Akincza J.

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nr 2

EN

Black-White cows imported from Holland are characterized by the correct body build. For the 305 days of lactation milk yield averaged 7795 kg with 4,41% fat and 3,35% protein content The average milk yield as FCM per 100 kg of body weight was 1294 kg. Ratio of milk, fat and protein yield obtained at first 100 days of lactation was respectively: 36,2; 36,7 and 33,8% as compared to the 305 days lactation Indices: the ratio of protein to fat content (SBT), the difference between fat and protein content in milk (RTB) and the Sanders index were respectively: 0,77; 1,06 and 254. Phenotypic correlation coefficients between milk performance traits and body measurements were low in values and quite often negative. The only strong relation for the 305 days of lactation was reported between milk protein content and the depth of chest (r = - 0,39; P 0,01).

14

Aminokwasy chronione oraz różne źródła białka w żywieniu wysoko wydajnych krów mlecznych

45%

Bodarski R. , Pres J. , Szyszkowska A. , Sobczyk I. , Kuczaj M.

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tom 64

15

Choroby metaboliczne lepiej zapobiegać niż leczyć

44%

Kuczaj M. , Woznicka H.

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nr 3

16

Preparaty siarowe w odchowie cielat

39%

Zachwieja A. , Szulc T. , Adamski M. , Kuczaj M. , Dobicki A. , Bohdanowicz-Zazula M.

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tom 50

427-433

17

Postep produkcyjny w wydajnosci mleka krow - mieszancow ras cb i czb x hf

39%

Kuczaj M. , Szulc T. , Zachwieja A. , Bohdanowicz-Zazula M. , Janik-Dubowiecka A. , Hajduk K.

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tom 50

237-242

18

Przemiany w żwaczu kwasów tłuszczowych paszy i ich wpływ na skład chemiczny tłuszczu mleka

39%

Kuczaj M. , Pres J. , Kinal S. , Szulc T. , Twardon J. , Luczak W.

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tom 67

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nr 12

EN

The paper indicates the transformations of fatty acids from the fodder in the rumen, and their impact on milk fat composition in the aspect of health-related properties. Modifications of food doses affect, inter alia, the amount of vaccenic acid isomer absorbed in the duodenum, as well as linolenic and linoleic acids with their isomers. However, the accurate analysis of fat given in fodder is required. Moreover, the pasture systems of dairy cows feeding or indoor green forage supply during the summer is of a greater significance. Lauric and myristic acids should not be given with fodder fats because they reduce yield and health-related value of milk. Besides the dietary factors, it is possible to increase milk health-related properties through increased desaturase content in the mammary gland, as well as the presence of new forms of fatty acids in some vegetable oils obtained by genetic manipulations.