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Comparison of the laying and egg weight of laying hens in two types of cages

100%

Damaziak K., Riedel J., Michalczuk M., Kurek A.

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

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2013

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tom 52

This study was aimed at comparing production results of laying hens kept in two types of cages: furnished cages and conventional cages. It covered the period from the 36th till the 54th week of hens life that was divided into two experimental stages: stage I - from week 36 till week 44, and stage II - from week 46 to week 54. Till week 44, 190 layers were reared in groups (10 hens each) in furnished cages (F) and 190 layers were kept individually in conventional cages (C). In week 45, the hens from furnished cages (F) were moved to conventional cages (FC), whereas these from conventional cages (C) were randomly merged into groups of 10 hens and transferred to furnished cages (CF). Egg laying (%) and egg weight (g) were controlled as well as percentage contribution of eggs in standard egg weight classes was determined in both experimental stages. The study showed a significant (P < 0.01) effect of cage type on the laying performance of the hens but only in the second stage of the study, as well as a significant (P < 0.01) effect of hens moving to different cages. In both cases, higher egg laying was reported for the hens from the conventional cages. Egg weight in the first and the second stage of the experiment was significantly (P < 0.01) higher in the groups housed in the furnished cage. A higher egg weight (P < 0.01) was determined in the layers in the second stage of the study. Both in the first (P < 0.01) and in the second (P < 0.05) stage, analyses showed a significant effect of cage type on the contribution (%) of eggs in particular egg weight classes. A higher percentage of eggs in the L class was obtained from the hens housed in the furnished cages. Differences in laying performance after hens moving suggest that the layers adapt more easily and faster to conditions of the C type cages. The egg weight was, probably, more dependent on general laying performance and age of the hens than on cage type.

2

Dietary vitamin E and selenium yeast supplemented with L-arginine enhanced laying performance and egg quality attributes of guinea fowl (Numida meleagris)

100%

Johnson A. A., Oso A. O., John M. O., Adedeji A. S., Ibrahim A. O., Adeniji O. A., Sulyman A., Adetona A., Ajibade F. P.

Animal Science and Genetics

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2022

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tom 18

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nr 4

3

Influence of day light length and maintenance conditions on the productivity of geese

84%

Bogenfurst F., Karakas P., Palmai L., Taraszenko Z.

Zeszyty Naukowe. Przegląd Hodowlany

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1997

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tom 31

4

Emu (Dromaius novaehollandiae) laying performance and egg quality during a ten-year reproductive performance period

84%

Szczerbinska D., Majewska D., Tarasewicz Z., Ramaniszyn K., Sammel A., Buclaw M.

Electronic Journal of Polish Agricultural Universities. Series Animal Husbandry

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2014

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tom 17

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nr 2

5

Search for the optimal performance control period of laying and eggs mass in the initial hen line of Moravia-SSL crossbred

84%

Lazar V., Faruga A., Jerabek S., Stavkova J.

Acta Academiae Agriculturae ac Technicae Olstenensis. Zootechnica

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1989

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tom 34

6

Nutritional value of rye distillers dried grains with solubles for laying hens

84%

Swiatkiewicz S., Koreleski J.

Polish Journal of Natural Sciences. Supplement

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2006

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tom 03

541-547

7

Substitution of soyabean meal with 00 rapeseed meal or its high-protein fraction in the nutrition of hens laying brown-shelled eggs

84%

Kaminska B. Z.

Journal of Animal and Feed Sciences

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2003

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tom 12

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nr 1

8

Effect of limestone meal or grit in laying hen diets on egg shell quality

84%

Koreleski J., Swiatkiewicz S.

Annals of Animal Science. Supplement

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2003

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nr 2

9

A note on inbreeding effect on productive and reproductive traits in laying hens

84%

Szwaczkowski T., Cywa-Benko K., Wezyk S.

Animal Science Papers and Reports

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2003

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tom 21

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nr 2

Inbreeding rate and effects on production (body weight, age at first egg, egg weight), and reproduction (per cent of eggs fertilized, per cent of eggs hatched as related to eggs set) traits were evaluated in 9194 layers belonging to two strains. The individual inbreeding coefficients were calculated using Wright’s formula from available performance records across nine generations. The inbreeding effects (including linear covariable) were estimated by derivative-free restricted maximum likelihood algorithm under an animal model. In general, the inbreeding level appeared relatively low in both populations. The inbreeding depressions for the traits studied (except per cent of eggs fertilized) were found low. The heritability estimates of productive and reproductive traits corresponded with those reported in literature.

10

Our knowledge of hens' reproductive breeding value is limited upon selecting birds for flock reproduction

84%

Rozempolska-Rucinska I., Twardowska M., Zieba G., Lukaszewicz M., Witkowski A.

Animal Science Papers and Reports

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2008

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tom 26

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nr 1

Influence of two sources of information on the accuracy of fertility and hatchability proofs in laying hens was studied on a Rhode Island White-based maternal strain record. Five- or three-generation pedigree and including or not including the laying performance as correlated traits were varied to create four variants of analysis tested against the reference – five-generation, multiple-trait, and post fatum reproduction record of the selected generation. The upper limit of the rank correlation between the reference ranking and the best possible ranking reached 0.9. A significant increase in the accordance of the BLUP proof rankings with the reference one was attributed to the multiple-trait approach Chile the pedigree depth exerted a lesser impact on the reproduction proof accuracy. It is concluded that,with low heritable reproduction traits, five-generation pedigree should be recommended to the threegeneration pedigree and the laying performance, possibly enriched with other early recorded traits,should accompany the breeding value prediction of the reproduction complex.

11

Wpływ zróżnicowanego żywienia na nieśność oraz reakcję kur na stres pokarmowy i wodny Cz. II. Kury lekkie Astra L.

67%

Skorupinska J., Jamroz D., Wiliczkiewicz A., Schleicher A.

Acta Agraria et Silvestria. Series Zootechnica

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1991

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tom 29

12

Genetic trends of laying merit in maternal [M55] and paternal [V44] strains of hens

67%

Zieba G., Lukaszewicz M., Twardowska M., Witkowski A.

Animal Science Papers and Reports

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2003

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tom 21

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nr 4

The purpose of the study was to evaluate with BLUP the effectiveness of breeding work performed in a commercial farm of laying hens where the selection index approach was applied. Production results of two (maternal M55 and paternal V44) nucleus strains regarded nine generations (1994-2002). Considered were body weight at the age of 18 weeks (BW), age (days) at first egg (MAT), number of eggs laid during first 15 weeks (IL), mean egg weight at week 10 of laying (EW), number of eggs laid during 44 weeks (L44) and hatchability (HA). Mean inbreeding coefficient of inbred birds amounted to 1.7 and 2.2%, in M55 and V44, respectively. Estimates of h2 (REML with animal model) were found similar in both strains, being highest for BW (0.604 and 0.646) and EW (0.536 and 0.607) and lowest for IL (0.180 and 0.185 in M55 and V44, respectively). Annual genetic changes (BLUP) were:0.69 and 0.54 eggs for IL, 2.64 and 2.23 eggs for L44, -0.62 and -0.79 days for MAT, –0.09 and 0.16 g for EW, respectively for M55 and A44 strains.

13

W poszukiwaniu genotypow - kaczki Tsaiya

59%

Rosinski A.

Biuletyn Informacyjny. Instytut Zootechniki

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1995

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tom 33

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nr 1

29-39

14

Proba oszacowania efektu heterozji u krolikow mieszancow

59%

Zajac J., Niedzwiadek S., Bielanski P.

Biuletyn Informacyjny. Instytut Zootechniki

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1995

|

tom 33

|

nr 1

41-53

15

Ocena wartosci uzytkowej roznych mieszancow typu niesnego w warunkach chowu klatkowego

59%

Gawecki W.

Biuletyn Informacyjny Drobiarstwa

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1994

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tom 32

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nr 1-2

5-10

16

Wplyw inbredu na wartosc cech uzytkowych indykow

51%

Jankowski J., Baran S.

Acta Academiae Agriculturae ac Technicae Olstenensis. Zootechnica

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1997

|

tom 46

103-113

Celem pracy było określenie wpływu zamierzonego stopnia zinbredowania indyków z rodów matecznych (J-33 i J-44) na wartość ich cech użytkowych. Kojarząc przez 10 kolejnych pokoleń rodzeństwo lub półrodzeństwo utworzono trzy linie zinbredowane indyków o współczynnikach inbredu (Fx) 0.795, 0.701 i 0.754. Analizowano przeżywalność piskląt, masę ciała i szerokość piersi indyków w wieku 16 tygodni oraz nieśność, masę i zapłodnienie jaj, a także wylęgowość. Depresja inbredowa wystąpiła tylko w cechach reprodukcyjnych. Jej wielkość zależała od linii i pokolenia indyków. We wszystkich liniach od 4. pokolenia wystąpiła wyraźna depresja inbredowa w nieśności. Podobną tendencję stwierdzono w wylęgowości.

17

Wpływ naświetlania kurnika promieniami ultrafioletowymi na zdrowotność i produkcyjność kur

51%

Janowski T. M., Zimnal S., Niedziolka J.

Acta Agraria et Silvestria. Series Zootechnica

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1991

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tom 29

18

Wplyw pochodzenia indykow na wyniki wychowu i reprodukcji

43%

Puchajda H., Faruga A., Jankowski J., Pudyszak K.

Acta Academiae Agriculturae ac Technicae Olstenensis. Zootechnica

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1997

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tom 46

123-132

Badaniami objęto trzy grupy genetyczne indyków - w typie ciężkim Hybrid Large White (HLW) i Big-6 oraz średniociężkim indyki WAMA-3. W każdej grupie odchowywano 200 lamie i 50 samców. Do reprodukcji wybrano losowo z każdej grupy po 105 samic i 20 samców. Okres rozpłodu trwał 20 tygodni. Po zakończonym okresie wychowu (30 tyg.) nieco cięższe (o 0.56 kg) były indyczki HLW (12.16 kg) od BIG-6 (11.60 kg). Samce w tych grupach osiągnęły jednakową masę ciała (25.85 kg). Indyki średniociężkie WAMA-3 ważyły w tym wieku mniej - samice 9.15 kg, a samce - 21.84 kg. Indyki WAMA-3 niezależnie od płci spożywały w okresie wychowu najmniej paszy. Największe spożycie paszy odnotowano u samców (106.91 kg) i samic (53.08 kg) w grupie indyków BIG-6. Indyczki BIG-6 i WAMA-3 osiągnęły dojrzałość rozpłodową w 224 dniu życia, a HLW w 229. dniu. Średnie zapłodnienie jaj wynosiło u indyczek HLW - 89.6%, BIG-6 - 88.6% i WAMA - 91.8%. Szczyt nieśności w analizowanych stadach osiągnęły ptaki w 3.-4. tyg. produkcji. W ciągu 140 dni nieśności uzyskano od nioski stanu początkowego od 60.6 szt. jaj (HLW) do 73.8 szt. (BIG-6). Średnia liczba piskląt wylęgłych od jednej nioski, to 41.3 szt. w grupie WAMA-3, 39.2 szt. w grupie BIG-6 i 33.3 szt. w grupie HLW. Najwyższe zużycie paszy na produkcję 1 pisklęcia stwierdzono u indyków HLW (1607 g), a najniższe u WAMA-3 (1164 g).

19

Wpływ zróżnicowanego żywienia na wskaźniki nieśnościoraz reakcję kur na stres pokarmowy i wodny. Część I. Nioski Astra S - średniociężkie

43%

Jamroz D., Skorupinska J., Wiliczkiewicz A., Schleicher A., Sobiech K.

Acta Agraria et Silvestria. Series Zootechnica

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1989

|

tom 28

Ograniczanie wyników

Comparison of the laying and egg weight of laying hens in two types of cages

Dietary vitamin E and selenium yeast supplemented with L-arginine enhanced laying performance and egg quality attributes of guinea fowl (Numida meleagris)

Influence of day light length and maintenance conditions on the productivity of geese

Emu (Dromaius novaehollandiae) laying performance and egg quality during a ten-year reproductive performance period

Search for the optimal performance control period of laying and eggs mass in the initial hen line of Moravia-SSL crossbred

Nutritional value of rye distillers dried grains with solubles for laying hens

Substitution of soyabean meal with 00 rapeseed meal or its high-protein fraction in the nutrition of hens laying brown-shelled eggs

Effect of limestone meal or grit in laying hen diets on egg shell quality

A note on inbreeding effect on productive and reproductive traits in laying hens

Our knowledge of hens' reproductive breeding value is limited upon selecting birds for flock reproduction

Wpływ zróżnicowanego żywienia na nieśność oraz reakcję kur na stres pokarmowy i wodny Cz. II. Kury lekkie Astra L.

Genetic trends of laying merit in maternal [M55] and paternal [V44] strains of hens

W poszukiwaniu genotypow - kaczki Tsaiya

Proba oszacowania efektu heterozji u krolikow mieszancow

Ocena wartosci uzytkowej roznych mieszancow typu niesnego w warunkach chowu klatkowego

Wplyw inbredu na wartosc cech uzytkowych indykow

Wpływ naświetlania kurnika promieniami ultrafioletowymi na zdrowotność i produkcyjność kur

Wplyw pochodzenia indykow na wyniki wychowu i reprodukcji

Wpływ zróżnicowanego żywienia na wskaźniki nieśnościoraz reakcję kur na stres pokarmowy i wodny. Część I. Nioski Astra S - średniociężkie