Abstract
The purpose of this study was to evaluate the rigor mortis development and its effects on striploins quality of Murrah buffalos from meat (males) and dairy (females) productions. The rigor was monitored during carcass chilling (up to 22 h postmortem) and the meat physicochemical traits was accessed after 72 h postmortem. Glycolytic rate, measured by decreasing pH and glycogen content, was higher (p < 0.05) in female than in male buffalo, leading to a different onset rigor time (5-6 h and 9-10 h, respectively). Male meat had (p < 0.05) lower fat (1.41 vs 3.58%) and insoluble collagen (1.18 vs 1.58 mg g-1) contents, but higher soluble collagen content (5.16 vs 20.38%), sarcomere length (1.65 vs 1.84 µm), myofibrillar fragmentation (334 vs 295) and shear force (39.38 vs 25.92 N) than females. These results suggest that dairy buffalo meat is more tender and can be used on the market as high-quality meat such as from buffalo raised to meat production.
Highlights
Besides Brazil has the status of the highest concentration (1.39 million) of buffalos in the west (ABCB, 2020), the production, manufacturing process, and distribution of this segment has shown different characteristics that did not favor the valuation of the product by the consumer, who is unaware of its sensory and nutritional characteristics.Due to its similarity to beef, buffalo meat is sold in Brazil in two different ways: as buffalo meat, usually of a highquality standard; and as beef, when they are attributed with an inferior quality or when they are not valued in the producing region
As the lack of animal standardization is common in Brazilian commercial slaughterhouses, this work aimed to characterize the rigor mortis in Murrah buffalo carcasses with different quality standards, evaluating its effects on the meat physicochemical traits related to tenderness
The animals were split into two groups: five males (24-30-month-old and average live weight of 456 ± 13 kg) from meat production that were classified by the slaughterhouse for the premium market; and five females
Summary
Besides Brazil has the status of the highest concentration (1.39 million) of buffalos in the west (ABCB, 2020), the production, manufacturing process, and distribution of this segment has shown different characteristics that did not favor the valuation of the product by the consumer, who is unaware of its sensory and nutritional characteristics.Due to its similarity to beef, buffalo meat is sold in Brazil in two different ways: as buffalo meat, usually of a highquality standard; and as beef, when they are attributed with an inferior quality or when they are not valued in the producing region. Murrah is the predominant buffalo breed in Brazil for having good adaption to the tropics and double aptitude for meat and dairy production, being usually reared in small and medium farms (ABCB, 2020). Such double aptitude intensifies the lack of carcass standardization in the country, especially in the southeast region. In addition to young buffaloes, dairy females at the end of production, presenting low milk production, or even with reproductive problems are destined for slaughter to be sold as meat (Galeazzi, et al, 2010). The slaughter of unproductive and older buffaloes, especially dairy females, produces low-quality for consumer, especially low tenderness (Spanghero, et al, 2004; Kandeepan, et al, 2009; Li, et al, 2018)
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