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Silica grit, charcoal and hardwood ash in turkey nutrition

100%

Majewska T., Mikulski D., Siwik T.

Journal of Elementology

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2009

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tom 14

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nr 3

489-500

The objective of this study was to determine whether silica grit is a necessary dietary additive for turkeys raised in intensive production farms, and whether it can be replaced by other supplements such as charcoal or hardwood ash. The conclusions were formulated based on performance results, blood hematological and biochemical indices, the slaughter quality of turkeys, as well as on the chemical and physicochemical properties of turkey meat. The experimental material comprised 360 male Big 6 heavy-type turkeys randomly divided into 4 treatments and raised on litter until 20 weeks of age. Birds of all treatments were fed identical complete pelleted basal diets. The experimental factor were various feed supplements in each group. The control treatment was fed a diet without supplements. The diets for experimental groups were supplemented with silica grit (SG), charcoal (CH) or hardwood ash (HA) in the amount of 0.3% of the administered feed mix. Dietary supplements were administered from the first day of life until the end of the rearing period. No significant changes in blood hematological and biochemical indices of turkeys were observed. Silica grit (SG) had an adverse effect on the performance results of turkeys, while the addition of both CH and HA had a highly beneficial impact. The best results were reported in respect of charcoal. The treatment fed a diet supplemented with CH was characterized by the lowest mortality rate of 4.4%, i.e. half that observed in the control group, body weight higher by 3.9% and rearing efficiency index higher by 9.7%.

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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

3

Effect of feeding on the production indices and meat quality in White Koluda W31 geese

84%

Puchajda-Skowronska H., Lepek G., Pudyszak K.

Polish Journal of Natural Sciences. Supplement

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2006

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tom 03

497-504

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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).

Ograniczanie wyników

1 Animal Science Papers and Reports

1 Annals of Animal Science. Supplement

1 Journal of Elementology

1 Polish Journal of Natural Sciences. Supplement

1 Bernacki Z.

1 Kokoszynski D.

1 Lepek G.

1 Majewska T.

1 Mallek T.

1 Mikulski D.

1 Puchajda-Skowronska H.

1 Pudyszak K.

1 Siwik T.

1 Smiecinska K.

1 Wajda S.

1 2009

1 2008

1 2006

1 2005

Silica grit, charcoal and hardwood ash in turkey nutrition

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

Effect of feeding on the production indices and meat quality in White Koluda W31 geese

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