Wyniki wyszukiwania

1

Assessment of the effect of alpha-galactosides injected during embryogenesis on selected chicken traits

100%

Pilarski R., Bednarczyk M., Lisowski M., Rutkowski A., Bernacki Z., Wardenska M., Gulewicz K.

Folia Biologica

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2005

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tom 53

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nr 1-2

2

The effect of broiler chicken postmortem carcass temperature on selected meat quality traits

84%

Jakubowska M., Gardzielewska J., Rybarczyk A., Karamucki T., Szymkowska-Natalczyk W.

Annals of Animal Science. Supplement

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2005

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nr 2

3

Performance, blood profile, carcass and meat traits and tissue morphology in growing rabbits fed mannanoligosaccharides and zinc-bacitracin continuously or intermittently

84%

Attia Y. A., Hamed R. S., Abd El-Hamid A. E., Al-Harthi M. A., Shahba H. A., Bovera F.

Animal Science Papers and Reports

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2015

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tom 33

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nr 1

The study aimed at evaluation the effect of mannanoligosaccharides (MOS) and zinc-bacitracin (ZnB) administered continuously (+) or intermittently (+/-) upon growing performance, carcass and meat traits, blood profile and tissue morphology of growing rabbits. One hundred and twenty five, 25 days-old rabbits were distributed among 5 groups fed the same basal diet: the control group did not receive any supplements; MOS+ group fed mannanoligosaccarides at 0.083 g/rabbit/day;MOS+/- group fed MOS at the same concentration as MOS+ group, but only two days/week; ZnB+group received Zinc bacitracin at 0.083 g/rabbit/day; ZnB+/- group fed ZnB at the same level as ZnB+ group but only two days/week. The experiment lasted from day 25 to 81 of life. The mortality rate in the control group (36%) was higher (P<0.05) than in MOS+/- (12%) and ZnB+ groups (12%).MOS and ZnB administered intermittently increased (P<0.01) dressing percentage as compared to the control group. The liver percentage increased (P<0.01) due to use of MOS (+ or +/-) and ZnB (+). ZnB (+ or +/-) increased (P<0.05) the protein percentage of meat as compared to the control group, while the continuative administration of MOS was able to reduce (P<0.05) the fat percentage as related to the control group. Both supplements and both administration protocols increased (P<0.01) meat tenderness and water holding capacity in respect to the control group. Continuous ZnB administration had deleterious effects on liver, kidney and ileum morphology. MOS could replace ZnB from weaning to slaughter age of rabbits without negative effects on performance and blood profiles causing no alterations in tissue morphology as compared to the control group. In addition, the MOS can be administered intermittently, reducing the production costs.

4

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Effect of different diets fed to a breeder flock of game pheasants on meat traits of their offspring

84%

Kokoszynski D., Bernacki Z., Lawski K., Korytkowska H.

Acta Scientiarum Polonorum. Zootechnica

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2011

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tom 10

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nr 2

The study was carried out with 51 game pheasants derived from parents that were fed during the reproductive period with a commercial feed mixture (25 birds) or feed mixture and whole maize grain (26 birds). Pheasants were kept in a confined facility, without regard to sex, in cages on plastic mesh floor for the first three weeks and in pens on straw later on. During the study, offspring received commercial feed mixtures for pheasants or turkeys. The introduction of whole maize grain in the ration of parent pheasants reduced the body weight of their offspring except at 12 weeks of age. In addition, it caused significant decreases in the length of trunk with neck, lower thigh and shank, and chest circumference in 4-week-old pheasants, and in the length of trunk with neck, trunk and lower thigh in 18-week-old birds. Dressing percentage was high in both groups and exceeded 72%. The proportion of breast muscles was higher in the carcasses of pheasants derived from parents fed a low-protein diet with whole maize grain (31.0 vs. 29.0%). Areverse relationship was found for the proportion of leg muscles in the carcass with neck (23.5 vs. 24.0%). The proportion of skin with subcutaneous fat was similar in both experimental groups (6.4 vs. 6.3%).

5

Evaluation of selected meat traits in seven-week-old duck broilers

84%

Bernacki Z., Kokoszynski D., Mallek T.

Animal Science Papers and Reports

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2008

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tom 26

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nr 3

Investigated were three crossbred duck broiler groups: heavy Star 63, PP54, and Dworka (CaA15),20 males (M) and 20 females (F) per group. The birds were kept in pens on rye straw, in a separate closed building with regulated environmental parametres, and fed ad libitum standard commercial feed mixtures. Body weight was recorded on day 1 and then on week 3 and 7 of birds’ life, and feed consumption measured up to the end of rearing period (week 7). At the end of week 7 five M and five F birds selected from each group were slaughtered and their carcasses dissected. Immediately postslaughter the breast and leg muscle samples were taken for histological fibre identification. Breast and leg muscles pH was determined 15 min and 24 h post-slaughter. Body weight on week 7 of life was significantly highest in the Star 63 birds of both sexes. The lowest feed consumption up to the end of week 7 of life was found in CaA15 while the most desirable feed conversion ratio in males and females Star 63 broilers. The highest slaughter body weight and highest dressing percentage were both found in Star 63 (both sexes), while the lowest body weight was found in both sexes of Dworka broilers. No significant differences were identified in dressing percentage and in the content of carcass elements between the evaluated crossbreds as well as between the sexes. The breast muszle content of carcass with neck was highest in PP54 males (13.7%) and in Star 63 females (14.5%),while the content of skin with fat occurred lowest in CaA15 group (26.5% in males and 27.8% In females). Heavy Star 63 broilers had the lowest white fibre (αW: 28.1 μm in males and 27.4 μm In females) and red fibre (βR: 15.1 μm in males and 14.2 μm in females) diameter of the surface breast muscle, while the light (CaA15) Dworka broilers showed the highest white fibre diameter (αW: 37.2 μm in males and 36.3 μm in females) and red fibre diameter (βR: 16.2 μm in males and 15.6 μm In females).

6

Reproductive traits of ducks from maternal strains in two laying periods and meat traits of their offspring

84%

Mazanowski A., Ksiazkiewicz J., Szukalski G.

Roczniki Naukowe Zootechniki

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1999

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tom 26

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nr 4

7

Traits of Greylag, White Koluda and Slovakian goose crossbreds relative to direction of crossing

84%

Mazanowski A., Dziadek K.

Annals of Animal Science

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2003

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tom 03

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nr 1

8

Comprehensive evaluation of meat traits of ducks from two sire strains

84%

Mazanowski A., Ksiazkiewicz J.

Journal of Animal and Feed Sciences

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2004

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tom 13

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nr 1

9

Reproductive traits of ducks from paternal strains in two laying periods and meat traits of their offspring

84%

Mazanowski A., Ksiazkiewicz J., Kisiel T.

Roczniki Naukowe Zootechniki

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1999

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tom 26

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nr 4

10

Characterization of meat traits and fatty acids profile from Swallow-Belly Mangalitsa, Moravka pigs and their crossbreeds

67%

Migdal L., Radovic C., Zivkovic V., Gogic M., Migdal A., Migdal W.

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

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2018

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tom 57[4]

11

Carcass quality, meat traits and chemical composition of meat in ducks of paternal strains A44 and A55

67%

Mazanowski A., Kisiel T., Gornowicz E.

Animal Science Papers and Reports

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2003

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tom 21

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nr 4

Analysed were 8-week-old males and females of duck paternal strains A44 and A55. The in vivo weights of meat and fat with skin were estimated based on live body weight, breast bone length and breast muscle thickness. Heritability coefficients for meat production traits and genetic and phenotypic correlations between them were calculated. Carcasses were measured and dissected. In breast and leg muscles the pH and water holding capacity as well as water, protein, fat and ash were determined. Simple correlation coefficients were calculated between carcass weight with neck and carcass components, and body measurements. A55 ducks of both sexes showed greater meat and fat weight, but lower meat and higher fat content of carcass compared to A44 ducks. Based on the correlation coefficients between body measurements and body weight and carcass components, it is suggested that in order to increase the meat weight in the carcass, both strains should be selected for body weight, and strain A44 additionally for breast bone length and breast muscle thickness. Chest depth – which is positively and significantly correlated with the weight and content of breast and leg muscles of carcass, and negatively with the weight and content of subcutaneous fat with skin – can be used in selection for increased muscling and decreased carcass fatness. Also breast bone length and shank length, as well as chest and shank circumference can be used in the selection for increased meat weight and decreased fat weight in duck carcass. It is concluded, based on the pH, water holding capacity and chemical analyses of breast and leg muscles, that the culinary value of strain A55 meat is higher than of strain A44.

12

Meat traits and meat chemical composition in hybrids of Graylag [Anser anser L.] with White Koluda and Slovakian geese

67%

Mazanowski A., Bernacki Z., Kisiel T.

Animal Science Papers and Reports

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2005

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tom 23

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nr 1

Evaluated were the meat production traits of hybrid males and females derived from four-way (threebreed) crossing of Graylag (Gr), White Kołuda (WK) and Slovakian (Sl) geese. Parental males and females were similar within a group, but differed between groups in the direction (type) of crossing the parents. The greatest values of meat production traits, except for meat and fat content of carcass,were characteristic of 12- and 24-week-old SlGrWKSl’SlGrWKSl hybrids (group II). The direction (type) of crossing was shown to affect the values of meat traits in the hybrid geese. This trend was conspicuous in 24-week-old offspring of four-way crosses.WKGrSlSl’WKGrSlSl hybrids (group III) reflected a positive effect of WK males, while SlWKGrSl’SlWKGrSl (group IV) a negative effect of Sl males on body dimensions of the offspring. Good results of body weight, weight of carcass with neck, dressing percentage and elements content of carcass were achieved by 24-week-old hybrids of both sexes from group I (GrWKSlSl’GrWKSlSl) and group II (SlGrWKSl’S1GrWKSl). The Wright of breast and leg muscles was significantly and positively correlated with all the body dimensions analysed. Per cent of breast and leg muscles was significantly and positively correlated only with breast bone length and thickness of skin with subcutaneous fat. Simple correlation coefficients between carcass elements and body dimensions in the offspring of four-way crosses justify using them to raise hybrid Graylag geese. When compared to the other Polish geese breeds and varieties, breast muscles of hybrid Graylag geese contained less water, protein and fat and more ash, while leg muscles contained similar per cent of water, slightly less protein, and more fat and ash.

Ograniczanie wyników

Assessment of the effect of alpha-galactosides injected during embryogenesis on selected chicken traits

The effect of broiler chicken postmortem carcass temperature on selected meat quality traits

Performance, blood profile, carcass and meat traits and tissue morphology in growing rabbits fed mannanoligosaccharides and zinc-bacitracin continuously or intermittently

Effect of different diets fed to a breeder flock of game pheasants on meat traits of their offspring

Evaluation of selected meat traits in seven-week-old duck broilers

Reproductive traits of ducks from maternal strains in two laying periods and meat traits of their offspring

Traits of Greylag, White Koluda and Slovakian goose crossbreds relative to direction of crossing

Comprehensive evaluation of meat traits of ducks from two sire strains

Reproductive traits of ducks from paternal strains in two laying periods and meat traits of their offspring

Characterization of meat traits and fatty acids profile from Swallow-Belly Mangalitsa, Moravka pigs and their crossbreeds

Carcass quality, meat traits and chemical composition of meat in ducks of paternal strains A44 and A55

Meat traits and meat chemical composition in hybrids of Graylag [Anser anser L.] with White Koluda and Slovakian geese