Parameters of breeding traits of sheep of the new breed Artlukhsky merino

2021 ◽  
pp. 3-8
Author(s):  
H. H. Musalaev ◽  
R. A. Abdullabekov ◽  
P. M. Magomedova
Keyword(s):  
Breeding System ◽  
Final Stage ◽  
Age Groups ◽  
Live Weight ◽  
Urgent Problem ◽  
Merino Wool ◽  
Wool Fibers ◽  
The Difference ◽  
Selected Traits ◽  
The Republic

The planned breed for breeding in the Republic of Dagestan is Dagestan mountain breed. However, from sheep of this breed fine merino wool is not obtained, and the breeding of special merino breed for mountain and transhumant breeding system is an urgent problem. The purpose of the research was to characterize the main breeding traits in different sex and age groups of sheep of the new breed Artlukhsky merino, such as live weight, wool shearing and its qualitative parameters. Artlukhsky merino breed was bred by using Dagestan mountain breed on the ewes at the beginning stage of the rams of Stavropol breed, and at the final stage – Manych merino breed. The research of the parameters of the breeding traits has been made on elite and class I animals in the breeding farm of the APC “Krasny Oktyabr” in the Kazbekovsky area in the Republic of Dagestan. The live weight of sheep of different sex and age groups of the tested breed was 45–97 kg. The average fineness of wool fibers in adult rams was 23,3 microns (60 quality), in ewes – 22,9 microns (64 quality), in rams aged 12 months – 22,1 microns and young ewes – 20,9 microns (64 quality). The difference in the fineness of the wool on the side and thigh did not exceed one quality. The length of the wool fibers on the side on average in adult rams was at least 9,9 cm, in ewes – 9,4 cm, in young ewes – 10,2 cm and young rams – 10,4 cm. The yield of washed wool in the herd was at the level of 64 %, the fertility of ewes was 125 to 135 %. Thus, the indicators of the main selected traits in sheep of the new breed Artlukhsky merino are at the level of the best domestic breeds, such as Volgograd and Vyatka.

MERINO SHEEP BREED RAISED UNDER MOUNTAIN BREEDING SYSTEM

2020 ◽  
pp. 81-93
Author(s):  
KH.KH. MUSALAYEV ◽  
◽  
R.A. ABDULLABEKOV ◽  
P.M. MAGOMEDOVA ◽  
Keyword(s):  
Age Groups ◽  
Live Weight ◽  
Sheep Breed ◽  
Merino Sheep ◽  
Merino Wool ◽  
Farm Production ◽  
State Commission ◽  
The Russian Federation ◽  
The Difference ◽  
Subsequent Improvement

Dagestan is the leading Republic of Russia in terms of the number of sheep and sheep breeding products. The zoned target sheep breed in Dagestan is the Dagestan mountain breed. However, this breed produces thin but non-merino wool. Developing the Merino sheep breed suitable for mountain breeding is an urgent problem. The new Merino sheep breed was developed for the foothill zone of Dagestan, where summer Alpine and winter low-lying pastures are located at a distance of no more than 150 km from each other, and summer Alpine pastures are located at an altitude of up to 3000 meters above sea level. The research and stock breeding work was carried out at the farm production enterprise “Krasniy Oktyabr’”, the Kazbek district, in the period between 2005 and 2019. The work resulted in the development of the Arthlukh Merino sheep breed. (Patent for selection achievement No. 10112 “State Commission of the Russian Federation for Selection Achievement Tests and Protection”). The breed was developed by crossing the Stavropol sheep rams with the Dagestan mountain sheep, with the subsequent improvement of crossbreeds by the Manych Merino breed. A distinctive feature of the new Merino breed from the basic herdmates of the Dagestan Mountain breed is the high live weight, which is 15.3–16.5% higher in different sex and age groups. Besides, the amount of washed wool shorn is 16.2–26.0% higher. The ewes’ wool fineness is 22.9 microns (19.4–23.0) – 64 qualities. That of adult rams amounts to 23.3 microns (19.9–23.3) and has 60 qualities. The difference of the wool fineness on the side and thigh does not exceed one quality. The coat length on the side of ewes is not less than 9.0 cm, rams – 9.5 cm, gimmers (young ewes) – 9.5 cm and replacement rams – 10.0 cm. The wool strength is 7.0 cN/Tex. The belly wool cover is good. The suint is stable, of a white and light cream color. The average yield of washed wool excluding the lowest grades is 64%. The fertility of ewes ranged from 125% to 135%.

scholarly journals CHARACTERISTICS OF THE PRODUCTIVITY OF THE MOLDOVAN TYPE OF TSIGAY SHEEP

2017 ◽  
Vol 53 ◽  
pp. 155-160
Author(s):  
P. Lytskanov ◽  
O. Mashner ◽  
I. Tofan
Keyword(s):  
Agricultural Production ◽  
Age Groups ◽  
Live Weight ◽  
High Energy ◽  
Productivity Index ◽  
Experimental Station ◽  
Production And Consumption ◽  
The Difference ◽  
The Republic ◽  
Technology Of Production

The studies were conducted from 2012 up to 2016 years  in the Agricultural Production and Consumption Cooperative for the production of seeds "Elita-Alexanderfield" of the Cahul district and at  theTechnological  Experimental Station "Maximovka" in the District AneniiNoi on a number of sheep of different sex-age groups of the Moldavian type of Tsigay sheep .. Growth and development of lambs were studied  with the way of individual weighing of young animals at  weaning  at 3-3.5 month and 6-7 month  in accordance with generally accepted methods and on the basis of "Recommendations on the technology of production of sheep breeding in the Republic of Moldova". The  class assessment of young animals was carried  at 12-13 months of age in accordance with the "Instruction forbonitization of sheep semitone-root breeds with elements of breeding work." Also were taken into account individual cuttings and live weight of adult livestock before the breeding campaign, productive indicators of breeding sheep selected in the selection grouprams, ewes, repair lambs and (she) lambs. During theinvestigated  periodin both farmshugged6,579 heads of ewes  and were obtained7010 lambs. Fecundity of ewes was 106.6%, in the number of twinswere born 862 lambs or 12.3%. At the age of 3 - 3,5 months were evaluated 1743 of  lambs and 2517 of (she)lambs. The lambs had a living weight of 24.45 kg with a wool length of 6.18 cm andat the(she) lambs, respectively, 21.85 kg and 5.99 cm. At lambs  , the live weight was with 2.6 kg higher and the wool length 0.19 cm in relation to(she) lambs (P ≤ 0.001). From theevaluated 1743lambs, to the 3-5 points with a high energy of growth are attributed 697 (39.9%) of the heads  and for (she)  lambs  1729, which is 68.7%. The live weight of sheep in the range from 25.94 kg to 31.38 kg and at (she) lambs 21.51 - 26.29 kg. Young animals that received 3-5 points are recommended tobe  grown for herd repair andimplementation of other peasant and  farm households. When assessing at 12-13 months of age for lambs to classelitebelong  402 heads or 96.9%. The live weight was 49.05 kg, the wool cut was 4, 84 kg with the length of the staple 12.66 cm. The percentage of elite(she) lambs was lower in comparison with the lambs and  was45.6%, and the productivity index was 40.59 kg, 4.09 kg and 12.5 cm. When assessing the productivity of the sheep of the main flock for wool cut and live weight, it was revealed that the live weight of the rams in theinvestigated  two farms is the same at 70.97 and 70.91 kg. According to the ewes, the living mass in theTechnological Experimental Station "Maximovka" is 52.45 ± 0.22 kg, and in the Agricultural Production and Consumption Cooperative for the production of seeds "Elita-Alexanderfield" 53.22 ± 0.08, which is higher by 0.77 kg (P ≤ 0.001). Among the rams, the wool cuttings in the TES Maksimovkawere 6.18 ± 0.23 kg, which is higherin relation to the obtained  results in the APCC  "ElitaAlexanderfeld"5.21 ± 0.05 by 0.97 kg, according to the ewes respectively 3.96 ± 0.03 kg, 3.41 ± 0.01 kg and 0.55 kg. For both sex-age groups, the difference is significant P ≤ 0.001. In selective groups, the intensity of selection obtained from rams was 41.8%; , ewes 70.5%; repair lambs 65.8% andrepair(she) lambs 15.1%. Differentiation of selection  , that is, the difference of  the productivity of the animals of the breeding group and in the whole in the herd, at the rams for the live weight  7.77 kg and wool  cut 1.65 kg,  atewesrespectively 2.99 and 1.38 kg,at the repair lambs 2,26 and 1,38 kg at  and the repair (she) lambs 6,50 and 1,19 kg.

Understanding the difference in softness of Australian Soft Rolling Skin wool and conventional Merino wool

2021 ◽  
pp. 004051752110505
Author(s):  
Hao Yu ◽  
Christopher Hurren ◽  
Xin Liu ◽  
Xungai Wang
Keyword(s):  
Fiber Diameter ◽  
Purchasing Decisions ◽  
Key Factors ◽  
Height Difference ◽  
Moisture Regain ◽  
Merino Wool ◽  
Wool Fibers ◽  
Significant Difference ◽  
The Difference ◽  
Wool Industry

Softness is one of the key elements of textile comfort and is one of the main considerations when consumers make purchasing decisions. In the wool industry, softness can reflect the quality and value of wool fibers. There is verifiable difference in subjective softness between Australian Soft Rolling Skin (SRS) wool and conventional Merino (CM) wool, yet the key factors responsible for this difference are not yet well understood. Fiber attributes, such as crimp (curvature), scale morphology, ortho-to-cortex (OtC) ratio and moisture regain, may have a significant influence on softness performance. This study has examined these key factors for both SRS and CM wool and systematically compared the difference in these factors. There was no significant difference in the crimp frequency between these two wools; however, the curvature of SRS wool was lower than that of CM wool within the same fiber diameter ranges (below 14.5 micron, 16.5–18.5 micron). This difference might be caused by the lower OtC ratio for SRS wool (approximately 0.60) than for CM wool (approximately 0.66). The crystallinity of the two wools was similar and not affected by the change in OtC ratio. SRS wool has higher moisture regain than CM wool by approximately 2.5%, which could reduce the stiffness of wool fibers. The surface morphology for SRS wool was also different from that of CM wool. The lower cuticle scale height for SRS wool resulted in its smoother surface than CM wool. This cuticle height difference was present even when they both had similar cuticle scale frequency.

Protein-bound iodine, erythrocytes and haemoglobin in the blood of beef steers and their relation to rate of gain

1962 ◽  
Vol 58 (3) ◽  
pp. 287-290 ◽  
Author(s):  
H. C. Luitingh
Keyword(s):  
Serum Protein ◽  
Age Groups ◽  
Live Weight ◽  
Iodine Concentration ◽  
The Other ◽  
Beef Steers ◽  
Red Cell ◽  
The Difference ◽  
Haemoglobin Content ◽  
Daily Gain

The serum protein-bound iodine concentration in the blood of beef steers varied between animals and was not correlated with the daily gain during the fattening period. The data, however, are insufficient to arrive at a definite conclusion.The average erythrocyte counts of the blood were 7·86 (range: 5·89–8·75), 8·59 (range: 6·55–10·15), and 8·54 (range: 5·23–9·62) million per mm.3 for steers of 14, 26 and 38 months of age. The difference between the counts of the yearlings and that of the other age groups was statistically significant. The red cell fraction increased with live weight over the range 700–1230 lb. Although a significant (P < 0·01) correlation was found between the number of erythrocytes in the blood and the daily gain of the steers, the erythrocyte count cannot be employed to predict the possible gaining ability of single beef animals.The haemoglobin content of the blood was found to be 14·02 (range: 9·8–17·4) in the case of the yearlings, 14·68 (range: 11·8–18·5)and 14·61 (range: 7·95–16·85) g./100 ml. blood in the case of the 2-year-olds and 3-year-olds respectively. These differences between age groups were not significant.A correlation of 0·31 was found between the haemoglobin content and live weight of steers within the weight range of 600–1230 lb. The data suggest that for every 100% increase in weight, the haemoglobin in the blood increased by 17%. No correlation was found between the haemoglobin content and the rate of gain of the steers.

MEAT QUALITIES OF STEERS KALMYK CATTLE IN THE FOOTHILLS OF DAGESTAN

2020 ◽  
Author(s):  
М.М. САДЫКОВ ◽  
М.П. АЛИХАНОВ ◽  
А.Г. СИМОНОВ ◽  
Г.А. СИМОНОВ
Keyword(s):  
Live Weight ◽  
Matter Content ◽  
Winter Period ◽  
Dry Matter Content ◽  
Birth Season ◽  
Chemical Indicators ◽  
The Difference ◽  
The Republic ◽  
Livestock Products ◽  
Growth Energy

Изложены материалы исследований по изучению влияния сезона рождения телят на их рост, развитие и качество мяса в предгорной зоне Республики Дагестан. Установлено, что интенсивное выращивание и откорм бычков калмыцкого скота по технологии мясного скотоводства «корова—теленок» позволяет получать животных с высокой живой массой. Бычки зимнего периода рождения достигают живой массы 454,4 кг, весеннего — 425,8 кг, разница в пользу молодняка зимнего периода рождения 28,6 кг (6,7%), по среднесуточному приросту, соответственно, 795 г и 744 г, или на 51 г (6,8%) в пользу первых. Бычки зимнего сезона рождения превосходили сверстников весеннего сезона по предубойной живой массе на 27,1 кг (6,6%). Более высокая энергия роста бычков зимнего периода рождения способствовала повышению убойных качеств. Они превосходили по массе туши на 20,5 кг, или на 9,2%, убойному выходу — на 1,3% молодняк весеннего периода рождения. По химическим показателям мяса они также имели преимущество в сравнении с аналогами весеннего сезона рождения — по содержанию сухого вещества на 0,53%, жира — на 0,44%. По содержанию белка в мясе бычков зимнего и весеннего периодов рождения существенных различий не установлено. Для повышения производства высококачественной говядины в предгорной провинции Дагестана следует получать телят зимнего периода рождения для выращивания и откорма, что позволит сократить материальные затраты на производство животноводческой продукции и таким образом повысить рентабельность производства говядины. The article presents research materials on the influence of the calves ' birth season on their growth, development and quality of meat in the foothill province of Dagestan. It is established that intensive cultivation and fattening of calves of Kalmyk cattle by the technology of beef cattle breeding "cow-calf" in the conditions of the foothill province of the Republic of Dagestan allows you to get animals with a high live weight. Bulls of the winter period of birth reach a live weight of 454,4 kg, spring-425,8 kg, the difference in favor of bulls of the winter period of birth was 28,6 kg (6.7%), the average daily increase, respectively, 795 g and 744 g, in favor of the former by 51 g (6,8%). Bulls of the winter birth season outnumbered their counterparts of the spring season in pre-slaughter live weight by 27,1 kg (6,6%). Higher growth energy of winter period calves contributed to an increase in slaughter qualities. They surpassed the carcass weight by 20,5 kg or 9,2%, and the slaughter yield by 1,3% of their peers. Chemical indicators of meat also had an advantage in comparison with analogues of the spring birth season in terms of dry matter content by 0,53%, fat by 0,44%. There are no significant differences in the protein content in the meat of winter and spring-born calves. To increase the production of high-quality beef in the foothill province of Dagestan, it is necessary to receive calves of the winter birth period for growing and fattening, which will reduce material costs for the production of livestock products and thus increase the profitability of beef production.

scholarly journals Tendency Of Incidence With Nonspecific Ulcerative Colitis In Kazakhstan

2021 ◽  
Vol 11-12 (221-222) ◽  
pp. 8-12
Author(s):  
Shyryn Kenzhebekova ◽  
◽  
Sauirbay Sakhanov ◽  
Dulat Turebaev ◽  
Gauhar Nurtazinova ◽  
...  
Keyword(s):  
Ulcerative Colitis ◽  
Adult Population ◽  
Age Groups ◽  
Epidemiological Studies ◽  
Chronic Inflammatory Bowel Disease ◽  
Managerial Decisions ◽  
Nonspecific Ulcerative Colitis ◽  
The Difference ◽  
The Republic ◽  
Morbidity Trends

Nonspecific ulcerative colitis is a chronic inflammatory bowel disease of an immune nature with frequent localization in the large intestine. A pattern is noted that in the northern and western continents they suffer more often than in Asia. To identify risk factors in a population, epidemiological studies must firstly assess the incidence of disease. Aim. To study the trends of nonspecific ulcerative colitis (NUC) incidence in Kazakhstan. Material and methods. The research material was compiled summary reporting form number 12 of the Ministries and the Health of the Republic of Kazakhstan on new cases of nonspecific ulcerative colitis (ICD-10 – K51), established for the first time. A retrospective study was used as the main method for studying the incidence of NUC. According to generally accepted methods of biomedical statistics, extensive, intensive and equalized indicators of the incidence of NUC were calculated. Results and discussion. For 2013-2018 14,079 new cases of NUC were registered in the republic, of which 15 were in children – 15.3%, teenagers – 4.8% and adults – 79.8%. The average annual incidence rate of NUC in the entire population of Kazakhstan was 13.5±2.10/0000 (95% CI=9.4-17.50/0000), and for population groups having been studied was: in children – 7.2±2.10/0000 (95%CI=3.8-12.00/0000), among teenagers – 18.7±5.00/0000 (95% CI=9.0-28.50/0000) and the adult population 15.4±1.90/0000 (95% CI=11.8-19.10/0000). The difference in morbidity between groups was statistically significant. Disease tended to decrease in all age groups: in the adult population (Т=−12.3%), children (Т=−43.7%) and in adolescents (T=-50.1%). Conclusion. According to the dynamics, NUC incidence in Kazakhstan has a decreased tendency due to the child and adolescent population. The results obtained are recommended to be taken into account by health authorities when making managerial decisions. Keywords: nonspecific ulcerative colitis, morbidity, trends, Kazakhstan.

scholarly journals Mortality by marital status in the Republic of Serbia

2018 ◽  
pp. 597-606
Author(s):  
Ivan Marinkovic ◽  
Biljana Radivojevic
Keyword(s):  
Age Groups ◽  
Mortality Trends ◽  
Female Population ◽  
Men And Women ◽  
Male And Female ◽  
Factors Affecting ◽  
The Difference ◽  
The Republic ◽  
Population Mortality ◽  
The Impact

Mortality among married is lower than in those out of wedlock. Studies in European countries show that the difference in mortality between those who are married and those unmarried is increased regardless of sex. The main objective of the analysis in this paper is to show the impact of marriage on the mortality of the population, as well as the difference in the life expectancy of men and women in Serbia, by marriage status. Is there a protective effect of marriage? That is, can we confirm the hypothesis of higher importance of marriage status, when it comes to mortality of the men, and can we determine whether there are strong links between mortality and various modalities of marriage in the female population? Mortality trends for married and unmarried individuals were analyzed between the years 1981 and 2011, for both male and female population by five-year age groups. The scope of the analysis is the territory of Central Serbia and Vojvodina. This aspect of mortality is not sufficiently addressed in national research, which is why it is expected that the results of the conducted research can contribute to a deeper understanding of the factors affecting the mortality of the population in Serbia.

scholarly journals Differences in Perception of Stress of Physiotherapists Employed in Various Departments

2020 ◽  
Vol 4 (1) ◽  
pp. 21-31
Author(s):  
Mia Milojević ◽  
Ivan Brumini ◽  
Ivana Crnković
Keyword(s):  
Perceived Stress ◽  
Age Groups ◽  
Service Level ◽  
Physical Medicine ◽  
Online Questionnaire ◽  
Length Of Service ◽  
Significant Difference ◽  
The Difference ◽  
The Republic ◽  
Monthly Salary

Stress in the workplace represents a specific type of stress, stemming from the work environment. Stressful situations at work can trigger negative emotions that are linked with anxiety, tension, depression, fatigue and lack of working motivation. The aim of this research is to investigate differences in the perception of stress of physiotherapists employed in various departments. The research was conducted using an online questionnaire aimed at 123 physiotherapists in the Republic of Croatia. The results have showed that respondents perceived their workplace as moderately stressful. Considering the difference in the experience and perception of stress with regard to the department where physiotherapists work, the results have showed that there is a statistically significant difference in the level of perceived stress among the respondents with regard to the department in which they are employed. It was found that respondents employed in orthopaedics perceived stress to a lesser extent than those individuals employed in health centres and in the department of physical medicine and rehabilitation. The differences in the perception of stress among the respondents who are employed in other departments have shown no statistically significant difference. It was shown that the respondents of 20–25 years of age were found to exhibit statistically significantly lower levels of perceived stress compared to subjects of 26–36 years of age. There is no noted statistically significant difference in the perception of stress among other age groups. It was determined that participants with a lower net monthly salary exhibit statistically significant greater lever of perceived stress in comparison to participants with a net monthly salary that is greater than the average. The results of the study have shown that there are no statistically significant differences in the level of perceived stress among respondents in terms of gender, length of service, level of education or marital status.

The use of dairy steers in the production of beef in Transnistria

2020 ◽  
pp. 36-49
Author(s):  
L. Syarova ◽  
A. Vostroilov
Keyword(s):  
Live Weight ◽  
Climatic Conditions ◽  
Meat Processing ◽  
Urgent Problem ◽  
Black And White ◽  
Holstein Breed ◽  
The Difference ◽  
Meat Productivity ◽  
Experimental Group ◽  
Comprehensive Study

In Transnistria own production is not able to meet the needs of meat processing enterprises in beef. Due to natural and climatic conditions beef breeds are not grown in this region. All beef production in Transnistria is carried out at the expense of dairy breeds of cattle. The search for ways to effectively produce beef in Transnistria is an urgent problem. The purpose of the research was to determine the effectiveness of the use of purebred Black-and-White steers and crossbreds with Holstein breed in the production of beef in Transnistria. A comprehensive study of meat productivity and meat qualities of purebred and crossbred steers, when they are reared and fattened to different age periods. In all age periods the steers of the experimental group surpassed their herdmates in live weight. It has been found that at the age of 3 months the difference was 14,8 kg (P < 0,01), 6 – 23,9 kg (P < 0,001), 9 – 21,4 kg (P < 0,001), 12 – 38,1 kg (P < 0,001), 15 – 40,3 kg (P < 0,001), and 18 months – 33,5 kg (P < 0,001). The maintenance and fattening of young animals in equal conditions allowed to reveal the most optimal variant of rearing of crossbreds to 18-month age with a live weight of 500–510 kg and their transfer to slaughter. Characterizing the profitability of production of live weight gain in the experimental group of animals, it has been found that the most profitable (34,8 %) was the rearing of animals up to 18 months of age, which is by 2,3 % higher than when rearing steers up to 16 months of age, and 2,4 % higher than when rearing them up to 20 months of age.

EFFICIENCY NON-TRADITIONAL FEED IN CATTLE BREEDING IN YAKUTIA

2020 ◽  
Author(s):  
Н.М. ЧЕРНОГРАДСКАЯ ◽  
М.Ф. ГРИГОРЬЕВ ◽  
А.И. ГРИГОРЬЕВА ◽  
А.Н. КЮНДЯЙЦЕВА
Keyword(s):  
Milk Production ◽  
Live Weight ◽  
Feed Additives ◽  
Control Group ◽  
Milk Productivity ◽  
The Difference ◽  
The Republic ◽  
Daily Milk Yield ◽  
And Control ◽  
Experimental Group

Целью исследований являлось определение эффективности производства молока при внедрении местных нетрадиционных кормовых добавок в кормлении первотелок красной степной породы. Научно-производственных опыт был проведен в условиях сельхозкооператива Республики Саха (Якутия). По методу аналогов были сформированы опытная и контрольная группы. В период проведения производственного опыта первотелки контрольной группы потребляли основной рацион. Первотелки опытной группы дополнительно к основному рациону получали на 1 голову цеолит в дозе 1 г на 1 кг живой массы, 300 г сапропеля и 60 г Кемпендяйской соли. При включении местных нетрадиционных кормовых добавок в рацион первотелок отмечено улучшение молочной продуктивности. В опытной группе на производство 1 кг молока было затрачено 1,48 ЭКЕ против 1,67 в контрольной группе. При сравнении среднесуточного удоя отмечена разница в контрольной группе 7,73 кг, в опытной — 8,58 кг молока, при этом валовое производство молока составило 127185 и 141215 кг, соответственно. Включение местных нетрадиционных кормовых добавок в состав рациона первотелок способствовало повышению молочной продуктивности на 10,09%. При изучении экономической эффективности внедрения местных нетрадиционных кормовых добавок в кормлении первотелок было установлено, что в опытной группе животных было дополнительно получено 653,5 тыс. руб. при дополнительных затратах 19,8 тыс. руб. Таким образом, использование местных нетрадиционных кормовых добавок в кормлении первотелок способствует повышению молочной продуктивности. The aim of the research was to determine the efficiency of milk production when introducing local non-traditional feed additives in the feeding of heifers of the red steppe breed. Scientific experience was carried out in the conditions of the Agricultural Production Cooperative "Crosses" of the Suntarsky district of the Republic of Sakha (Yakutia). To conduct the experiment, the experimental and control groups were formed by the method of analogues. During the production experience, the control group first calves consumed the main diet. An experimental group of heifers in addition to the main diet received zeolite per 1 head in a dose of 1 g per 1 kg of live weight, 300 g of sapropel and 60 g of Kempendiai salt. When local non-traditional feed additives were included in the feeding of heifers, there was an improvement in milk productivity, so in the experimental group of animals 1.48 energy feed units were spent on the production of 1 kg of milk compared to 1.67 in the control group. When comparing the average daily milk yield, the difference in the control group was 7.73 kg, and in the experimental group 8.58 kg of milk, while the gross milk production was 127185 and 141215 kg, respectively. The inclusion of local non-traditional feed additives in the diet of heifers contributed to an increase in milk productivity by 10.09%. When studying the economic efficiency of introducing local non-traditional feed additives in the feeding of heifers, it was found that 653.5 thousand rubles were received in the experimental group of animals. at additional costs 19.8 thousand rubles. Thus, the use of local non-traditional feed additives in feeding heifers contributes to an increase in milk productivity.

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