Wyniki wyszukiwania - Biblioteka Nauki

1

Liczba prosiąt w miocie wciąż za niska

100%

Milewska W.

Hodowca Trzody Chlewnej

|

2012

|

nr 01-02

2

Dalsze badania nad przydatnoscia Uterotonic-Polfa w rozrodzie macior

84%

Kotowski K. , Szrom A.

Medycyna Weterynaryjna

|

1998

|

tom 54

|

nr 04

279-281

EN

The purpose of the study was to assess the effect of Uterotonic-Polfa on the results of fertility of adult and young sow and the number of piglets born by these females. The examinations were carried out on 243 females which had been divided into two groups: group I - 125 animals including 111 multiparous sows and 14 primaparous animals aged approximately 8 months. They were given Uterotonic-Polfa once at the rate of 50 mg of propranolol i.m. at 3-4 hours before insemination. Group II - 118 females including 104 multiparous animals and 14 young sows aged approximately 8 months, weighing about 120 kg served as a control group. Insemination was carried out by 100 ml of semen at the concentration of 3-3.5 mid of Spermatozoons in the period of sexual toleration. It was found out that in group I the number of sows which had given birth was 3.55% higher than that in the control group. The use of the drug increased the number of live new-born piglets by 2.09% as compared with the control. In primaparous sows the number of deliveries was up to 14.24% higher than that in controls; however, the mean number of piglets born in a litter was only higher by 0.73 Uterotonic-Polfa administered before coition or insemination had a beneficial effect on the improvement of fertility and cropping power.

3

Użytkowość rozpłodowa loch pochodzących ze stad o zróżnicowanej użytkowości tucznej i rzeźnej

84%

Ptak J. , Mucha A. , Rozycki M.

Roczniki Naukowe Zootechniki

|

2016

|

tom 43

|

nr 2

4

Meblowanie, czyli wyrównywanie miotów

84%

Schwarz T.

Top Agrar Polska

|

2010

|

nr 10 Top Świnie

5

Wplyw liczby sutkow u rodzicow na wyniki uzytkowosci rozplodowej

84%

Buczynski A. , Zaborowski T. , Szlandrowicz S. , Gronek P. , Dudziak P. , Krupiak S.

Roczniki Akademii Rolniczej w Poznaniu. Zootechnika

|

1996

|

tom 48

|

nr 2

61-67

6

Ksztaltowanie sie niektorych cech loch w okresie lat 1970-1993

84%

Grudniewska B.

Trzoda Chlewna

|

1995

|

tom 33

|

nr 08-09

8-11

7

Kształtowanie się cech użytkowości rozpłodowej loch w stadach o różnej wielkości

84%

Orzechowska B. , Mucha A.

Zeszyty Naukowe. Przegląd Hodowlany

|

2000

|

tom 48

8

Wyniki wstepnych badan nad przydatnoscia Uterotonic-Polfa w rozrodzie macior

84%

Kotowski K. , Szrom A.

Przegląd Hodowlany

|

1997

|

tom 65

|

nr 02

10-11

9

Ocena uzytkowosci rozplodowej loch

84%

Orzechowska B. , Mucha A.

Stan Hodowli i Wyniki Oceny Świń

|

2003

|

tom 21

13-33

10

Wpływ liczebności miotu pochodzenia loch rasy polskiej białej zwisłouchej i wielkiej białej polskiej na liczbę prosiąt urodzonych i odchowanych

84%

Rekiel A. , Wiecek J. , Rafalak S. , Ptak J. , Blicharski T.

Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego

|

2013

|

tom 09

|

nr 1

PL

Celem pracy było określenie wpływu liczebności miotu, z którego pochodziły lochy na liczbę prosiąt żywo urodzonych i odchowanych do 21. dnia. Materiał do badań stanowiły dane o użytkowości rozpłodowej samic pbz i wbp (1791 i 1047 rekordów), użytkowanych w latach 2004-2009 w stadach zarodowych mazowieckiego rejonu hodowlanego. Na podstawie liczebności miotu pochodzenia, lochy przydzielono do grup: grupa I ≤9, grupa II – 10, grupa III – 11, grupa IV – 12, grupa V – 13, grupa VI ≥14. Zmiany ogółem w liczbie prosiąt żywo urodzonych w grupie VI w porównaniu do grupy I wynosiły +1,52 prosięcia w rasie pbz (P≤0,01) i +0,40 prosięcia w rasie wbp. Uzyskane dane wskazują, że w celu poprawy płodności loch krajowych ras matecznych należy do remontu stada wybierać loszki pochodzące od loch wysokopłodnych. Wybór na przyszłe matki loszek od samic urodzonych w mało licznych miotach (≤10) jest nieuzasadniony. Na przyszłe matki należy pozostawiać młode samice urodzone w miotach liczących co najmniej 13 (rasa pbz) i 12 (rasa wbp) prosiąt.

EN

The aim of the study was to determine the effect of size of litter in which sows were born on the number of piglets born alive and number of piglets at 21 days of age. The study included data on reproductive performance of Polish Landrace (PL) and Polish Large White (PLW) sows (1791 and 1047 records, respectively), which were raised in 2004-2009 in pedigree herds from Mazovian breeding region. The sows were divided into groups according to the size of litter of origin: group I ≤9, group II – 10, group III – 11, group IV – 12, group V – 13, group VI ≥14. Total changes in the number of piglets born alive (group 6 vs. group 1) were +1.52 piglets for the PL breed (P≤0.01) and +0.40 piglet for the PLW breed. The results show that to improve fertility in sows of domestic maternal breeds, gilts for herd replacement should be selected from highly fertile sows, and it is unjustified to select gilts from females born in small litters (≤10) as mothers of the next generation. Young females born in litters of at least 13 (PL) and 12 (PLW) piglets should be chosen as mothers of the next generation.

11

Prosięta martwo urodzone - gdzie leży przyczyna?

84%

Janusz P.

Top Agrar Polska

|

2010

|

nr 10 Top Świnie

12

Wpływ różnej aktywności ruchowej loch ciężarnych na długość trwania porodu i niektóre wskaźniki użytkowości rozpłodowej

67%

Kolacz R. , Pilarczyk A. , Dobrzanski Z.

Roczniki Naukowe Zootechniki

|

1985

|

tom 12

|

nr 1

13

Ocena uzytkowosci rozplodowej loch

67%

Orzechowska B. , Mucha A.

Stan Hodowli i Wyniki Oceny Świń

|

2007

|

nr 25

3-20

14

Wpływ formy konfekcjonowania i metody mrożenia nasienia knura na wybrane wskaźniki użytkowości rozrodczej loch

67%

Bielas W. , Dubiel A. , Rzasa A. , Twardon J. , Nizanski W.

Medycyna Weterynaryjna

|

2010

|

tom 66

|

nr 10

s.706-710,tab.,bibliogr.

EN

The aim of this work was to estimate the influence of packaging forms and freezing methods of the semen of boars on the reproductive performance of sows. Experiments were carried out with 50 sows in a large swine farm. The females in experimental groups were inseminated with FT whilst in the control groups with liquid semen. Ejaculates from 4 boars were frozen in a polystyrene box onto static LN nitrogen vapor in 5 ml maxi and 0.5 ml medium straws according to methods A and B, modifications of the Westendorf et al (1975) and of the Pursel and Park (1987) technique, respectively. The sows were divided into five research groups, ten pigs in each group. The sows in experimental groups 1, 2, 3, and 4 were inseminated with frozen semen whilst in control group 5 with liquid semen. The females in groups 1 and 2 were inseminated with the semen frozen using method A and confectioned in a 0.5 ml medium and in 5 ml maxi straws, respectively. Whilst the sows in the group 3 and 4 were inseminated with the semen frozen according to method B and packaged in 0.5 ml and 5 ml straws, respectively, in each group. One insemination dose consisted of either 5 billion spermatozoa placed into one 5 ml maxi straw or of ten 0.5 ml medium straws with 500 million spermatozoa. The sows were inseminated twice or three times every ten hours with frozen semen. The first insemination took place 24 h after the sow had first shown a standing reflex. Females inseminated with frozen semen were inseminated post cervically, three times every 10 h during each oestrus. One insemination dose comprises 5 × 10⁹ of sperm and 5mg of PGF₂α. The occurrence of ovulation was detected by ultrasonography. Efficiency of insemination and reproductive performance of sows have been evaluated on the basis of conception and farrowing rates and total piglets born in a litter. The conception rate, the farrowing rate and the total piglets born in a litter in all five groups (1, 2, 3, 4, 5) were: 100, 90, 100, 90, 100%; 80, 70, 90, 70, 100% and 10.62 ± 1.92; 9.42 ± 1.51; 10.77 ± 2.53; 9.71 ± 1.79; 12.0 ± 1.8, respectively. A total of 40 females were inseminated with frozen (experimental) and 10 with liquid semen. There were no statistically significant differences in pregnancy and farrowing rates between all the experimental groups. Sows inseminated with liquid semen gave significantly higher percentages of litter size than females inseminated with frozen semen (12.00 vs. 10.19) (Table 1). Sows in groups 1 and 3 inseminated with semen frozen in 0.5 ml straws according to methods A and B had significantly higher litter sizes than sows in groups 2 and 4 inseminated with semen frozen in 5 ml straws according to corresponding methods A and B (10.62 and 10.77 vs. 9.42 and 9.71), respectively (Table 2). Animals inseminated with semen frozen in 0.5 ml straws had significantly higher percentages of litter size than females inseminated with semen frozen in 5 ml straws (10.7 vs. 9.57) (Table 3). There were no significant differences in litter size between females inseminated with semen frozen according to methods A and B (10.06 vs. 10.31) (Table 4). Acceptable reproductive performance of female pigs after AI with frozen semen was probably achieved because special attention was paid to the heat detection and timing of insemination related to ovulation (with the aid of rectal and abdominal ultrasonography), post-cervical insemination, addition of PGF₂α to each insemination dose, improvement of the freezing-thawing methods and good freezability of the sperms’ donors. Both freezing methods are relatively simple, but method B is less time consuming in preparation than method A. Fertility results obtained with frozen-thawed boar semen in our experiments are quite satisfactory. These results indicate that under good conditions (insemination strategy) frozen boar semen can give results that approach those obtained with fresh semen.

15

Wartość rozpłodowa loch w stadach zarodowych

67%

Orzechowska B. , Mucha A.

Trzoda Chlewna

|

2008

|

tom 46

|

nr 10

16

Porównanie trzech kolejnych cykli reprodukcyjnych loch pod względem zmian otłuszczenia oraz użytkowości rozpłodowej

67%

Eckert R.

Roczniki Naukowe Zootechniki

|

2020

|

tom 47

|

nr 2

17

Wpływ masy ciała pierwiastek w dniu krycia oraz wielkość dawki pokarmowej na produkcyjność loch

67%

Ruszczyc Z. , Schleicher A. , Fuchs B. , Jasek S. , Kotlinski J. , Poznanski W.

Roczniki Naukowe Zootechniki

|

1984

|

tom 11

|

nr 1

18

Masa lozyska a wyniki produkcyjne loch rasy polskiej bialej zwislouchej uzytkowanych w fermie tradycyjnej i przemyslowej

67%

Gajewczyk P. , Kwolek A. , Szurko J.

Zeszyty Naukowe Uniwersytetu Przyrodniczego we Wrocławiu. Biologia i Hodowla Zwierząt

|

2008

|

nr 56

35-43

19

Charakterystyka zmian wartości cech rozpłodowych loch rasy wielkiej białej polskiej i polskiej białej zwisłouchej wpisanych do rejestru użytkowości rozpłodowej

67%

Lechowska J. , Ruda M.

Zeszyty Naukowe. Przegląd Hodowlany

|

2004

|

tom 72

|

nr 2

20

Czynniki wpływające na czas trwania porodu u loch

67%

Klocek C. , Kaczmarczyk J. , Migdal W. , Koczanowski J.

Zeszyty Naukowe Akademii Rolniczej w Krakowie. Zootechnika

|

1990

|

tom 27