Milk Productivity and Reproductive Traits of Cows of Different Portions of Blood of Holstein Breed

Костомахин, Н. М.; Voronkova, O. A.; Gabedava, M. A.

doi:10.52463/22274227_2021_39_43

Cited by 8 publications

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“…Исследования ученых по вопросу влияния кровности по голштинской породе на воспроизводительные качества коров дают разные результаты. Поэтому уже много лет при использовании генофонда голштинской породы в России вопрос кровности получаемых животных не перестает быть актуальным не только с теоретической точки зрения, но и с практической [17]. В этой связи изучение влияния генотипа на величину, характер и направление изменчивости признаков воспроизводительной способности в каждой отдельной популяции коров является актуальным, что и определило направление наших исследований.…”

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The influence of Holstein crossbreeding on the reproductive qualities of Black-and-White cows

Титова

2022

Аграрная наука Евро-Северо-Востока

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The purpose of the research was to study the main indicators of the reproductive ability of Black-and-White cows, depending on the proportion of Holstein genes. As the material for the research there were taken the data of breeding and zootechnical records of cows of Black-and-White breed of CJSC Semenovsky Breeding Plant of the Mari El Republic. The results of the research showed that with an increase in the proportion of thorough-bredness on the Holstein breed the reproductive ability of cows improved. Thus, the first-calf heifers with a low proportion of Holstein genes (up to 12.5 %) had the latest age of the first fruitful insemination and the first calving (21.9 months and 32.3 months). With an increase in thorough-bredness up to 87.6 % and more, the age for the first insemination decreased by 7.7 months (31.8 %), the age of the first calving - by 7.4 month (21.8 %), fertility index increased by 5.8 (14.6 %). At the same time, the duration of the service period in high-blooded animals increased by 18.8-26.4 days (15.8-23.8 %). The duration of the calving interval in all genetic groups exceeded the optimal time and changed in accordance with the change in the service period. The longest calving interval was in cows with the thorough-bredness degree of 87.6 % (13.8 months), which was 0.1-0.7 months longer than in animals of other genetic groups. There was a low coefficient of reproductive ability of the studied animals of all genetic groups ‒ 0.91-0.93. The significant influence of Holstein genes on the age for the first fruitful insemination (ɳ2 = 9.57 %), the first calving (ɳ2 = 8.80 %) and the fertility of cows (ɳ2 = 1.98 %) (P≤0.05) was established. The effect of the genotype on the duration of the service period and calving interval was weak (ɳ2 = 0.09 % and ɳ2 = 0.26 %) and unreliable.

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The influence of Holstein crossbreeding on the reproductive qualities of Black-and-White cows

Титова

2022

Аграрная наука Евро-Северо-Востока

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Technological properties of milk of cows with different proportion of blood in the Holstein breed

2023

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Relevance. The priority task for the agro-industrial complex of Russia is to provide the population of the country with high-grade products. One of these products is milk. It is not only a valuable food product, but also a raw material for the dairy industry, its use for the production of certain products is determined by its technological properties. The study of these properties in a new genetic formation of dairy cattle in the Middle Urals zone has both scientific and practical interest.Results. As a result of the research, it was found that the milk obtained from cows with a Holstein breed genotype (75–91%) was the best in terms of the content of dry matter and its components. Cowʼs milk, regardless of genotype, is suitable for the production of highly processed products — canned milk and cheeses. According to all indicators, milk, with the exception of cows of the group with a genotype of 97% or more in terms of the ratio of protein and SOMO, is suitable for making cheese. Lower rates of suitability of milk for processing into Adyghe cheese were observed in milk from cows with a Holstein genotype of more than 91%. To improve the clot, the use of rennet was proposed, which made it possible to reduce the cost of calcium chloride and obtain a denser clot. The use of new technological solutions in the manufacture of Adyghe cheese with the use of protein coagulators makes it possible to increase the degree of use of fat and protein from cowʼs milk and reduce the cost of milk for its production.

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Physical and chemical indicators and technological properties of cowʼs milk depending on the linear origin

Горелик

Федосеева

et al. 2023

Agrarnaâ nauka

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Relevance. Milk is not only one of the most consumed food sources for Russian citizens, but also a valuable raw material for food production. Its composition is influenced by many factors, including origin. To obtain it, dairy cattle are used, including Holstein, created by absorbing the breeding stock of domestic black-and-white cattle by bulls of the Holstein breed. The study of physicochemical parameters and technological properties of milk of cows of a new genetic formation of dairy cattle in the Middle Urals zone is of both scientific and practical interest.Results. As a result of the research, it was found that the best indicators for the nutritional value of milk were found in the milk of the cows of the Montvik Chieftain line, the calorie content of which was higher than that of the milk of cows of other lines by 1.7 and 1.3%. It had more MJ, MDB, which had a positive effect on the content of dry matter and SOMO in the milk of cows of this line. Significant differences were found in the content of fat (MJ) and protein (MDP) in the milk of cows, as well as casein in favor of milk obtained from cows of the Montvik Chieftain line (р ≤ 0.05–0.01, respectively, in terms of indicators). The increased content of protein in the milk of cows of this group allows us to speak about the effectiveness of its use in cheesemaking, which is confirmed by indicators of cheese suitability and rennet coagulability. In the milk of cows of the Montvik Chieftain line, the duration of rennet clotting of milk (the duration of clot formation) was shorter by 7–8 min. according to Dilanyan and by 7'43''–10'11'' — according to N.V. Barabanshchikov).

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Milk Productivity and Reproductive Traits of Cows of Different Portions of Blood of Holstein Breed

Cited by 8 publications

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The influence of Holstein crossbreeding on the reproductive qualities of Black-and-White cows

The influence of Holstein crossbreeding on the reproductive qualities of Black-and-White cows

Technological properties of milk of cows with different proportion of blood in the Holstein breed

Physical and chemical indicators and technological properties of cowʼs milk depending on the linear origin

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