Biotechnology in Animal Husbandry 2022 Volume 38, Issue 1, Pages: 67-79
https://doi.org/10.2298/BAH2201067I
Full text ( 676 KB)
Changes in meat quality of Musculus Longissimus thoracis et lumborum after 1 and 4 months of frozen storage at -18°C, obtained from lambs
Ivanov Nikolay T. (Agricultural Institute - Stara Zagora, Agricultural Academy, Bulgaria), n_t_ivanov@abv.bg
Laleva Stayka S. (Agricultural Institute - Stara Zagora, Agricultural Academy, Bulgaria)
Kalaydzhiev Georgi I. (Agricultural Institute - Stara Zagora, Agricultural Academy, Bulgaria)
Miteva Daniela N. (Agricultural Institute - Stara Zagora, Agricultural Academy, Bulgaria)
The present study aimed to evaluate the effect of freezing and frozen storage
duration (1 and 4 months) on the chemical composition and technological
properties of lamb meat. Meat samples from Musculus Longissimus thoracis et
lumborum were collected from Bulgarian Dairy Synthetic Population and their
crosses with Ile-de-France and Mouton Charollais breed, with a slaughtering
weight of 22-23 kg. Samples were frozen in a freezer at -18 °С. Frozen meat
samples were thawed in a refrigerator at 4 °С 1 month and 4 months after
freezing and analysed for determination of chemical composition and
technological properties. It was established that lamb meat from the control
group kept frozen for 1 month had statistically significantly higher water
content compared to crosses of Bulgarian Dairy Synthetic Population with the
Ile-de- France breed. Furthermore, dairy lambs were outlined with
substantially higher meat fat content compared to crosses of Bulgarian Dairy
Synthetic Population with the with Mouton Charollais. The chemical analysis
of meat kept frozen for 4 months demonstrated significantly lower water
content and higher dry matter and protein content in Ile-de-France crosses
with Bulgarian Dairy Synthetic Population than in the control group. The
meat protein percentage was higher while fat content - was lower in crossed
Bulgarian Dairy Synthetic Population with Mouton Charollais compared to
respective values in controls. Meat pH values of Mouton Charollais crosses
differed significantly between the 1st and 4th month of frozen storage
(Р≤0.01). It was found out that the tenderness of meat frozen for 1 and 4
months was statistically significantly elevated in crosses of Bulgarian
Dairy Synthetic Population with Ile-de-France and Mouton Charollais breeds
compared to meat from control lambs.
Keywords: sheep farming, meat quality, freezing
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