Use of Holstein bulls in improvement of black pied cattle

Ignatieva, N. L.; Voronova, I.V.; Nemtseva, E. Y.; Toboev, G. M.

doi:10.1088/1755-1315/935/1/012025

Cited by 5 publications

(1 citation statement)

References 15 publications

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“…Recently, special attention has been paid to the development of not only dairy, but also the meat industry of cattle breeding [1]. Unfortunately, in our country in recent years, there has been a decrease in the total number of cattle, both meat and dairy areas of productivity [1,3,2,4,5,6]. Thus, in 2021, the number of cattle in agricultural enterprises decreased by 5.3% compared to 2020, of which the number of cows decreased by 3.3% [2,4].…”

Section: Introductionmentioning

confidence: 99%

The effect of the genotype of servicing bulls on the growth and development of Hereford young stock

et al. 2022

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In the studies, the growth and development indicators of the Hereford young stock were studied, depending on the origin. The average daily growth of calf bulls aged 824±16.4 g, 8 months – 962.5±14.6 g, 9 months – 981.5±18.6 g, 12 months – 986.1±19.2 g. The height at hips of calf bulls aged 205 days was 109±11.7 cm, 8 months – 111±9.4 g, 9 months – 112±6.8 cm, 12 months – 124±7.9 cm. The average daily increase in heifers aged 205 days was 853.6±11.3 g, 8 months – 854.2±17.5 g, 9 months – 870.3±18.2 g, 12 months – 850±10.5 g, 15 months – 831.1±15.6 g, 18 months – 777.8±16.5 g. The height at hips of calves aged 205 days was 106±9.8 cm, 8 months – 109±7.8 g, 9 months – 110±11.1 cm, 12 months – 118±8.9 cm, 15 months – 121±10.9 cm, 18 months – 125±13.2 cm. It was found that the growth rate of calves and calf bulls on fattening is influenced by the father genotype. When comparing the average live weight of young stock at the age of 18 months, the best results were in calf bulls received from the bull Perets 3989 – 375.8±17.5 kg, this is 3.8 kg more than the same indicator for calf bulls received from the bull Timeline 2930348, and 7.8 kg more than the bull Emulation 2909514, and by the live weight of heifers at the age of 18 months the leader is the Timeline 2930348- 352.6±25.2 kg.

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Section: Introductionmentioning

confidence: 99%

The effect of the genotype of servicing bulls on the growth and development of Hereford young stock

et al. 2022

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Polymorphism of serum blood proteins of herd horses (<i>Equus ferus caballus</i>) of the transbaikal breed

Khamiruev,

Bazaron,

Goncharenko

et al. 2024

Vestn. Novosib. gos. agrar. univ.

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The results of a study of the genetic diversity of the Transbaikal horse breed based on the polymorphism of whey proteins TF, Es, and ALB in four herds of the Transbaikal region are presented. The Transbaikal horse belongs to the ancient aboriginal breeds and is most adapted to the local climatic conditions of dry, hot summers and frosty winters with little snow. It is unpretentious, hardy, and has a strong constitution. Research is aimed at preserving the breed’s genetic diversity by studying polymorphic variants of whey proteins, which are reliable genetic markers due to their codominant inheritance and comprehensive polymorphism. In the albumin locus, two alleles and three genotypes were identified. In the esterase locus, there are six alleles and 13 genotypes. In the transferrin locus - 7 alleles and 18 genotypes occur with different frequencies in the studied herds, which makes it possible to characterise their genotypic characteristics. Rarely encountered genotypes of the transferrin locus (less than 10 %) include eight genotypes: TFDD, TFDH, TFDI, TFDR, TFFI, TFFM, TFOR, TFR; esterase locus – 6 genotypes: EsGI, EsHH, EsHI, EsHO, EsII, EsGI. Based on the frequency of genotypes and alleles, homozygosity was calculated for each whey protein system and for the entire sample from the herd, the level of which ranges from 7.87 to 12.25 %. The overall homozygosity rate varies from 34.35 to 43.36 %, and the number of effective alleles (Na) in all herds is almost the same (2.30–2.91). Genetic variability ranges from 56.96–63.74 %. The index of gene similarity between herds is at the level of 0.8439–0.9058. The analysed herds form two subclusters: the first includes horses from the APC (Agricultural Production Cooperative) Livestock Breeding Farm named after. Kalinin and SPK “Rassvet”. In the second - animals from APC (Agricultural Production Cooperative) “Livestock Breeding Farm “Rodina” and AC (Agricultural Cooperative) “Taptanay”.

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The use of propyleneglycol for the prevention of ketosis of cows in the fresh period

Voronova¹,

Ignatieva²,

Nemtseva³

et al. 2023

Agrarnaâ nauka

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Relevance. Prevention of ketosis in freshly calved cows is one of the urgent problems in the industry. The article presents data on the results of the use of propyleneglycol in the diets of cows during the transit period.Methods. For the study, 2 groups of cows were formed, control and experimental, with 30 heads each. The cows of the control group were fed the rations for dry and dairy cows of the highly productive group adopted on the farm. Cows of the experimental group in the dry period two weeks before calving in addition to the diet of the control group got 150 g of propyleneglycol per head per day and for two weeks after calving — 250 g.Results. It was found that the addition of propyleneglycol to the diets of cows for two weeks before calving and four — after — turned out to be expedient in the prevention of ketosis during the milking period. Analysis of milk for the presence of ketone bodies using test strips on the 10th day of lactation revealed positive results in 10% of cows in the control group, while 17% of cows were at risk. Analogical studies conducted on the 30th and 60th days of lactation showed the presence of ketone bodies in 7 and 3% of cows of the control group respectively, with questionable results in 6 and 4%. At the same time, in cowsof the experimental group, receiving propyleneglycol, this analysis did not show signs of ketosis.

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Use of Holstein bulls in improvement of black pied cattle

Cited by 5 publications

References 15 publications

The effect of the genotype of servicing bulls on the growth and development of Hereford young stock

The effect of the genotype of servicing bulls on the growth and development of Hereford young stock

Polymorphism of serum blood proteins of herd horses (<i>Equus ferus caballus</i>) of the transbaikal breed

The use of propyleneglycol for the prevention of ketosis of cows in the fresh period

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