Effects of Dietary Supplementation with dl-Methionine and dl-Methionyl-dl-Methionine in Breeding Pigeons on the Carcass Characteristics, Meat Quality and Antioxidant Activity of Squabs
| Autor: | Xiu-Qi Wang, N.X. Pan, Chun-Qi Gao, Hui-Chao Yan, Meng-Jie Chen, Shi-Guang Jiang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Antioxidant Physiology dl-methionine medicine.medical_treatment Clinical Biochemistry squabs antioxidant activity Superoxide dismutase activity Biochemistry dl-methionyl-dl-methionine Article meat quality 03 medical and health sciences Animal science medicine Dietary supplementation Molecular Biology DL-methionine Completely randomized design biology 0402 animal and dairy science Thigh muscle 04 agricultural and veterinary sciences Cell Biology 040201 dairy & animal science carcass characteristics Bioavailability 030104 developmental biology Catalase biology.protein |
| Zdroj: | Antioxidants Volume 8 Issue 10 |
| ISSN: | 2076-3921 |
| Popis: | This study aimed to investigate the effects of dietary supplementation with dl-methionine (dl-Met) and dl-methionyl-dl-methionine (dl-Met-Met) in breeding pigeons on the carcass characteristics, meat quality and antioxidant activity of squabs. A total of 324 pairs of breeding pigeons were selected and allotted to 9 treatments in a completely randomized design, and the birds were fed dietary treatments for 45 d, including a Met-deficient basal diet (BD, crude protein = 15%, Met = 0.25%) and BD + 0.15%, 0.30%, 0.45%, or 0.60% dl-Met or dl-Met-Met diets. Compared with the diet fed to the BD group, dietary dl-Met or dl-Met-Met supplementation effectively increased the carcass yield, semieviscerated yield, eviscerated yield, breast muscle yield, thigh muscle yield, a* value, catalase activity, total superoxide dismutase activity and glutathione peroxidase activity, but decreased the L* value, malonaldehyde concentration, drip loss and cooking loss of squabs (p < 0.05). The relative bioavailability values of dl-Met-Met relative to those of dl-Met were 467% and 376% based on carcass yield and breast muscle yield, respectively (p < 0.001). Moreover, dl-Met-Met was more effective than dl-Met in decreasing the drip loss and improving the antioxidant activity of the breast and thigh muscles of squabs (p < 0.05). As a source of Met, dl-Met-Met, rather than dl-Met, was more beneficial to squabs. |
| Databáze: | OpenAIRE |
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