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Effects of pearl millet silage ammoniation with urea on carcass and meat quality of lambs

Carvalho, Gleidson G. P. ; Freitas, Poliane Meire D. ; Santos, Edson M. ; Araújo, Gherman G. L. ; Oliveira, Juliana S. ; Rodrigues, Thomaz Cyro G. de C. ; Araujo, Maria Leonor G. M. L. ; Assis, Dallyson Yehudi C. ; Roça, Roberto de O. ; Delbem, Nara Laiane C. ; Lomele, Renata L. ; Leite, Laudi C. ; Rodrigues, Carlindo S.

Journal of animal physiology and animal nutrition, 2018-10, Vol.102 (5), p.1154-1166 [Periódico revisado por pares]

Germany: Wiley Subscription Services, Inc

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Título:
Effects of pearl millet silage ammoniation with urea on carcass and meat quality of lambs
Autor: Carvalho, Gleidson G. P. ; Freitas, Poliane Meire D. ; Santos, Edson M. ; Araújo, Gherman G. L. ; Oliveira, Juliana S. ; Rodrigues, Thomaz Cyro G. de C. ; Araujo, Maria Leonor G. M. L. ; Assis, Dallyson Yehudi C. ; Roça, Roberto de O. ; Delbem, Nara Laiane C. ; Lomele, Renata L. ; Leite, Laudi C. ; Rodrigues, Carlindo S.
Assuntos: Ammonia ; Ammoniation ; Animal Feed ; Animals ; Body Composition - physiology ; Body weight ; Cattle ; commercial cuts ; Conformation ; Cooking ; Design of experiments ; Diet ; Digestion - physiology ; Dry matter ; Experimental design ; Fatty acids ; Lamb ; Meat ; Meat - standards ; Meat quality ; Millet ; Palatability ; Pennisetum - chemistry ; Pennisetum - metabolism ; Pennisetum glaucum ; Polyunsaturated fatty acids ; proximate composition ; Random Allocation ; sheep ; Sheep - growth & development ; Sheep - metabolism ; Silage ; Urea ; Urea - chemistry ; Urea - metabolism ; yield
É parte de: Journal of animal physiology and animal nutrition, 2018-10, Vol.102 (5), p.1154-1166
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Descrição: This study aimed to evaluate the effect of pearl millet silage ammoniated with urea on lamb carcass characteristics and meat quality. Thirty‐two noncastrated crossbred lambs at 4–5 months of age, with an average initial body weight of 17.39 ± 2.16 kg, were distributed into four treatments in a randomized block experimental design with eight animals per treatment. Experimental diets were composed of pearl millet silage ammoniated with four levels of urea (0%, 2%, 4% and 6%, on dry matter basis (DM). Carcass conformation and fatness decreased linearly (p < 0.05). Except for the fat content, the proximate composition was not influenced (p < 0.05) by the diets. Meat lightness and yellowness increased linearly (p < 0.05). There was no effect of diets (p > 0.05) on cooking losses or shear force. The levels of oleic and erucic fatty acid levels in the meat decreased linearly (p < 0.05), whereas linoleic and eicosadienoic acids, polyunsaturated fatty acids, PUFA:SFA ratio and ω6 contents increased (p < 0.05). Pearl millet silage ammoniated with urea allows for the production of good‐quality lamb meat, with greater concentrations of polyunsaturated fatty acids. However, lambs fed diets with pearl millet ammoniated with up to 6% lead to a reduction of carcass characteristics without significantly affecting loin‐eye area possibly associated with low palatability of the additive used. The lower acceptance of the silages with higher levels of urea is due to the ammonia retention in the material is attributed to the ammonization process. Thus, in spite of the benefits on lamb meat quality, it is suggested that the use of this additive in the ammonization of tropical forages be carried out with care, in limits of up to 6%.
Editor: Germany: Wiley Subscription Services, Inc
Idioma: Inglês

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Effects of pearl millet silage ammoniation with urea on carcass and meat quality of lambs

Germany: Wiley Subscription Services, Inc

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