The effect of slaughter weight and fattening intensity on changes in carcass fatness in young Holstein-Friesian bulls
The objective of this study was to determine the effect of body weight (BW) at slaughter and fattening intensity on carcass fatness and meat fatty acid profile in young Holstein- Friesian bulls. One-hundred bulls fattened on two levels of intensity a semi-intensive (SI) and an intensive (I) were use...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2014-02-01
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| Series: | Italian Journal of Animal Science |
| Subjects: | |
| Online Access: | http://www.aspajournal.it/index.php/ijas/article/view/2824 |
| _version_ | 1811299374732410880 |
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| author | Zenon Nogalski Zofia Wielgosz-Groth Cezary Purwin Anna Nogalska Monika Sobczuk-Szul Rafał Winarski Paulina Pogorzelska |
| author_facet | Zenon Nogalski Zofia Wielgosz-Groth Cezary Purwin Anna Nogalska Monika Sobczuk-Szul Rafał Winarski Paulina Pogorzelska |
| author_sort | Zenon Nogalski |
| collection | DOAJ |
| description | The objective of this study was to determine the effect of body weight (BW) at slaughter and fattening intensity on carcass fatness and meat fatty acid profile in young Holstein- Friesian bulls. One-hundred bulls fattened on two levels of intensity a semi-intensive (SI) and an intensive (I) were used. Fattening was carried out to BW of 500, 550, 600, 650 and 700 kg. Live ultrasound measurements were performed to determine back fat thickness. Carcass dressing percentage, carcass conformation and fatness, intramuscular fat content of <em>m. longissimus dorsi</em> and fatty acid profile (by gas chromatography) were determined after slaughter. Intensively fattened bulls were characterised by a greater carcass dressing percentage – by 1.17% on average, greater carcass conformation scores, greater external fat thickness and a greater intramuscular fat content than bulls SI fattened. Fat from intensively fattened bulls contained higher levels of polyunsaturated fatty acids (PUFAs) – by 0.96/100 g on average. Semi-intensive fattening contributed to a decrease in the n-6/n-3 PUFA ratio and to a significant increase in the concentrations of C18:2 and C20:4 fatty acids. Regardless of the fattening intensity, the n- 6/n-3 ratio was greater in heavier animals. The best results were achieved when young Holstein-Friesian bulls were fattened intensively to BW of 650 kg. |
| first_indexed | 2024-04-13T06:35:06Z |
| format | Article |
| id | doaj.art-e8149fdfaaf0423caba005511716d23f |
| institution | Directory Open Access Journal |
| issn | 1594-4077 1828-051X |
| language | English |
| last_indexed | 2024-04-13T06:35:06Z |
| publishDate | 2014-02-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Italian Journal of Animal Science |
| spelling | doaj.art-e8149fdfaaf0423caba005511716d23f2022-12-22T02:57:57ZengTaylor & Francis GroupItalian Journal of Animal Science1594-40771828-051X2014-02-0113110.4081/ijas.2014.28242201The effect of slaughter weight and fattening intensity on changes in carcass fatness in young Holstein-Friesian bullsZenon Nogalski0Zofia Wielgosz-Groth1Cezary Purwin2Anna Nogalska3Monika Sobczuk-Szul4Rafał Winarski5Paulina Pogorzelska6Katedra Hodowli Bydła i Oceny Mleka, Uniwersytet Warmińsko-Mazurski w Olsztynie, OlsztynKatedra Hodowli Bydła i Oceny Mleka, Uniwersytet Warmińsko-Mazurski w Olsztynie, OlsztynKatedra Żywienia Zwierząt i Paszoznawstwa, Uniwersytet Warmińsko-Mazurski w Olsztynie, OlsztynKatedra Chemii Rolnej i Ochrony Środowiska, Uniwersytet Warmińsko- Mazurski w Olsztynie, OlsztynKatedra Hodowli Bydła i Oceny Mleka, Uniwersytet Warmińsko-Mazurski w Olsztynie, OlsztynKatedra Towaroznawstwa i Przetwórstwa Surowców Zwierzęcych, Uniwersytet Warmińsko-Mazurski w Olsztynie, OlsztynKatedra Hodowli Bydła i Oceny Mleka, Uniwersytet Warmińsko-Mazurski w Olsztynie, OlsztynThe objective of this study was to determine the effect of body weight (BW) at slaughter and fattening intensity on carcass fatness and meat fatty acid profile in young Holstein- Friesian bulls. One-hundred bulls fattened on two levels of intensity a semi-intensive (SI) and an intensive (I) were used. Fattening was carried out to BW of 500, 550, 600, 650 and 700 kg. Live ultrasound measurements were performed to determine back fat thickness. Carcass dressing percentage, carcass conformation and fatness, intramuscular fat content of <em>m. longissimus dorsi</em> and fatty acid profile (by gas chromatography) were determined after slaughter. Intensively fattened bulls were characterised by a greater carcass dressing percentage – by 1.17% on average, greater carcass conformation scores, greater external fat thickness and a greater intramuscular fat content than bulls SI fattened. Fat from intensively fattened bulls contained higher levels of polyunsaturated fatty acids (PUFAs) – by 0.96/100 g on average. Semi-intensive fattening contributed to a decrease in the n-6/n-3 PUFA ratio and to a significant increase in the concentrations of C18:2 and C20:4 fatty acids. Regardless of the fattening intensity, the n- 6/n-3 ratio was greater in heavier animals. The best results were achieved when young Holstein-Friesian bulls were fattened intensively to BW of 650 kg.http://www.aspajournal.it/index.php/ijas/article/view/2824Bulls, Slaughter weight, Fattening intensity, Carcass fatness, Fatty acids |
| spellingShingle | Zenon Nogalski Zofia Wielgosz-Groth Cezary Purwin Anna Nogalska Monika Sobczuk-Szul Rafał Winarski Paulina Pogorzelska The effect of slaughter weight and fattening intensity on changes in carcass fatness in young Holstein-Friesian bulls Italian Journal of Animal Science Bulls, Slaughter weight, Fattening intensity, Carcass fatness, Fatty acids |
| title | The effect of slaughter weight and fattening intensity on changes in carcass fatness in young Holstein-Friesian bulls |
| title_full | The effect of slaughter weight and fattening intensity on changes in carcass fatness in young Holstein-Friesian bulls |
| title_fullStr | The effect of slaughter weight and fattening intensity on changes in carcass fatness in young Holstein-Friesian bulls |
| title_full_unstemmed | The effect of slaughter weight and fattening intensity on changes in carcass fatness in young Holstein-Friesian bulls |
| title_short | The effect of slaughter weight and fattening intensity on changes in carcass fatness in young Holstein-Friesian bulls |
| title_sort | effect of slaughter weight and fattening intensity on changes in carcass fatness in young holstein friesian bulls |
| topic | Bulls, Slaughter weight, Fattening intensity, Carcass fatness, Fatty acids |
| url | http://www.aspajournal.it/index.php/ijas/article/view/2824 |
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