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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
- Source :
- Antioxidants, Volume 8, Issue 10
- Publication Year :
- 2019
- Publisher :
- MDPI, 2019.
-
Abstract
- 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 &lt<br />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 &lt<br />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 &lt<br />0.05). As a source of Met, dl-Met-Met, rather than dl-Met, was more beneficial to squabs.
- Subjects :
- 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
dl-methionine%22">dl-methionine
Molecular Biology
DL-methionine
Completely randomized design
biology
0402 animal and dairy science
Thigh muscle
04 agricultural and veterinary sciences
Cell Biology
dl-methionyl-dl-methionine%22">dl-methionyl-dl-methionine
040201 dairy & animal science
carcass characteristics
Bioavailability
030104 developmental biology
Catalase
biology.protein
Subjects
Details
- Language :
- English
- ISSN :
- 20763921
- Volume :
- 8
- Issue :
- 10
- Database :
- OpenAIRE
- Journal :
- Antioxidants
- Accession number :
- edsair.doi.dedup.....d360caf33b212f20f49633e6d1db186f