Konovalova EN, Evstafeva LV, Safonova SS, Romanenkova OS, Gladyr EA.

Animal Husbandry and Fodder Production. 2024. Vol. 107, no 4. Р. 41-52.

 

doi:10.33284/2658-3135-107-4-41

 

Original article

Chemical composition and histological structure of the longest muscle of the back

of Aberdeen-Angus cattle depending on genotype

 

Elena N Konovalova1, Liliia V Evstafeva2, Stanislava S Safonova3, Olga S Romanenkova4,

Elena A Gladyr5

1,4,5Federal Research Center for Animal Husbandry named after Academy Member LK Ernst, Moscow region, Dubrovitsy, Russia

2,3Russian State Agrarian University - Moscow Timiryazev Agricultural Academy, Moscow, Russia

1konoval-elena@yandex.ru, https://orcid.org/0000-0002-2170-5259

2lilmo@inbox.ru, https://orcid.org/0009-0001-5045-1235

3sfalij@yandex.ru, https://orcid.org/0000-0001-7587-3293

4ksilosa@gmail.com, https://orcid.org/0000-0002-2682-6164

5elenagladyr@mail.ru, https://orcid.org/0000-0002-5210-8932

 

Abstract. The article discusses the possibility of using calpain 1 (CAPN1) and calpastatin (CAST) genes for the prediction of beef tenderness and selection of the most perspective in this property animals. The aim of the research was the study of the CAPN1 and CAST gene polymorphisms in association with the chemical composition and histological structure of the meat in cattle. Samples from the longest muscle of the back (M. longissimus dorsum) of Aberdeen-Angus bulls (n=9) with known genotypes for the CAPN1_316, CAPN1_4751, CAST_282 and CAST_2959 polymorphisms were collected after slaughter and analyzed for protein, fat, dry matter and mineral content, as well as muscle, connective and adipose tissue content and muscle fiber diameter. It was found that meat from bulls with the GG-CAPN1_316 and GG-CAST_2959 genotypes contained 14.5-15.8% more protein and 11.4-13.3% less fat compared to other genotypes, and meat from animals with the ST-CAPN1_4751 and AA-CAST_2959 genotypes had lower connective tissue content (by 7.5-7.7 and 9.6-10.2%, respectively). The largest myofibril diameter was observed in samples from steers with genotypes CC-CAPN1_316 (111.2 μm), TT-CAPN1_4751 (116.2 μm) and AA-CAST_2959 (111.7 μm). With respect to the CAST_282 polymorphism, animals with the GC genotype showed advantages in all studied parameters.

Keywords: cattle, bulls, Aberdeen Angus breed, genetic markers, meat productivity, calpain 1, calpastatin

Acknowledgments: the   work   was   supported   by   the   Russian  Science  Foundation, project No. 23-26-00176.

For citation: Konovalova EN, Evstafeva LV, Safonova SS, Romanenkova OS, Gladyr EA. Chemical composition and histological structure of the longest muscle of the back of Aberdeen-Angus cattle depending on genotype. Animal Husbandry and Fodder Production. 2024;107(4):41-52. (In Russ.). https://doi.org/10.33284/2658-3135-107-4-41

 

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Information about the authors:

Elena N Konovalova, Cand. Sci. (Biology), senior researcher of the Laboratory of Molecular Genetics of Agricultural Animals, Federal Research Center for Animal Husbandry named after Academy Member LK Ernst, Dubrovitsy 60, Podolsk Municipal District, Moscow Region, 142132, tel.: +7 (4967) 65-11-04.

Liliia V Evstafeva, senior lecturer of the Department of Veterinary Medicine and Animal Physiology, Russian State Agrarian University - Moscow Timiryazev Agricultural Academy, 49, Timiryazevskay St., Moscow, 127434, tel.: +7 (499) 976-04-80.

Stanislava S Safonova, PhD student of Russian State Agrarian University - Moscow Timiryazev Agricultural Academy, 49, Timiryazevskay St., Moscow, 127434, tel.: +7 (499) 976-04-80.

Olga S Romanenkova, Cand. Sci. (Biology), researcher of the Laboratory of Molecular Genetics of Agricultural Animals, Federal Research Center for Animal Husbandry named after Academy Member LK Ernst, Dubrovitsy 60, Podolsk Municipal District, Moscow Region, 142132, tel.: +7 (4967) 65-11-04.

Elena A Gladyr, Cand. Sci. (Biology), leading researcher, Chief of the Laboratory of Molecular Genetics of Agricultural Animals, Federal Research Center for Animal Husbandry named after Academy Member LK Ernst, Dubrovitsy 60, Podolsk Municipal District, Moscow Region, 142132, tel.: +7 (4967) 65-11-04.

 

The article was submitted 17.09.2024; approved after reviewing 24.10.2024; accepted for publication 16.12.2024.

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