South African Journal of Animal Science
On-line version ISSN 2221-4062
Print version ISSN 0375-1589
WAPI, C. et al. Physico-chemical shelf-life indicators of meat from broilers given Moringa oleifera leaf meal. S. Afr. j. anim. sci. [online]. 2013, vol.43, suppl.1, pp.43-47. ISSN 2221-4062.
The objective of the study was to determine the effect of using Moringa oleifera leaf meal (MOLM) as an additive on physico-chemical shelf life indicators of meat from broilers. A total of 432 1-day-old chicks were randomly allocated to four treatments (TRT's). Water and feed was provided ad libitum. The feeding phases were pre-starter (0 to 7 days), starter (8 to 18 days), grower (19 to 28 days) and finisher (29 to 35 days).The four TRT's contained graded levels of the MOLM at 1000 g/ton, 750 g/ton, 500 g/ton and 0 g/ton (control), respectively. The birds were slaughtered at 35 days of age and the breast muscle was sampled for meat pH, colour and drip loss measurements over 7 days. The pH levels in all the TRT's were constant from Day 1 to Day 5, peaking on Day 6, and then declining on Day 7. Using MOLM as an additive had a significant effect on chickens, with TRT1 having the highest lightness (L*) values. The redness (a*) values were the highest in TRT2. Using MOLM as an additive had an effect on yellowness (b*) values. Drip loss was not affected by the dietary treatments. Using MOLM as an additive in broiler feeds produced chicken breast with a light (L*) appearance while shelf life indicators generally remained constant in the first 5-days of storage.
Keywords : Diet effect; drip loss; freshness; meat colour; meat pH.