Effects of intramammary antibiotic therapy during the dry period on the performance of Lacaune dairy sheep under intensive management

2014 ◽  
Vol 82 (1) ◽  
pp. 95-101
Author(s):  
Fernando Hernandez ◽  
Laura Elvira ◽  
Beatriz Fernández ◽  
Marta Egea ◽  
Antonio Gonzalez-Bulnes ◽  
...  
Keyword(s):  
Milk Yield ◽  
Total Yield ◽  
Milk Quality ◽  
Control Group ◽  
Lactation Period ◽  
Intensive Management ◽  
Dairy Sheep ◽  
Dry Period ◽  
Antibiotic Group ◽  
Daily Milk Yield

Often the only way to ensure profitability of Lacaune dairy sheep is intensive management, which requires appropriate dry-period treatment to ensure animal productivity and health. The present study aimed to investigate the effects of intramammary antibiotic dry therapy on the performance and health of Lacaune sheep under intensive management. We recorded data for 5981 complete lactation periods that followed a dry period. A total of 2402 lactation periods were preceded by a dry period involving intramammary administration of 300 mg of cephapirin benzathine (antibiotic group) and 3579 lactation periods were preceded by dry periods with no treatment (control group). The following on-farm yield data were collected for individual lactation periods: length of the subsequent lactation period; total milk yield per lactation period; daily milk yield and length of the subsequent dry period. Data on confounding factors that might affect productivity were also recorded, including the individual ewe, number of lactation periods and length of the previous dry period. Milk quality was assessed using data on somatic cell count (SCC) and content of protein and fat taken from the Spanish National Official Milk Yield Recording System. Antibiotic dry therapy significantly improved total yield per lactation period, which was 429±151·1 l in the antibiotic group and 412±165·5 l in the control group, as well as the daily milk yield, which was 1986±497·0 and 1851±543·2 ml/d, respectively (both P<0·0001). The initial dry period was significantly longer in the antibiotic group than in the control group, and dry period length correlated inversely with yield variables such us total yield per lactation period (r=−0·055; P<0·0001) and yield per day in milk (r=−0·039; P<0·0001). As a result, milk yield records systematically underestimated the positive effects of antibiotic dry therapy. Antibiotic dry therapy also significantly improved milk quality. Milk from the antibiotic group showed 50% lower SCC (573±1326 vs. 1022±2126 cells/ml; P<0·0001) and slightly higher content in fat (7·33±0·91 vs. 7·15±0·87%) and protein (5·63±0·44 vs. 5·44±0·4%). The results of this study suggest that cephalosporin dry therapy of Lacaune dairy sheep increases milk production and improves milk quality during subsequent lactation periods.

Influence of dry period length on reproductive performance and productivity of Lacaune dairy sheep under an intensive management system

2012 ◽  
Vol 79 (3) ◽  
pp. 352-360 ◽  
Author(s):  
Fernando Hernandez ◽  
Laura Elvira ◽  
Juan-Vicente Gonzalez-Martin ◽  
Susana Astiz
Keyword(s):  
Milk Yield ◽  
Global Analysis ◽  
Dairy Farm ◽  
Period Length ◽  
Intensive Management ◽  
Dairy Sheep ◽  
Dry Period ◽  
Key Factor ◽  
Daily Milk Yield ◽  
Daily Milk

Intensive management is almost the only way to ensure dairy farm profitability. The dry period length (DPL) is a key factor in the productivity and health of dairy cows, but whether the same is true of dairy sheep is unclear. This study investigated the effects of DPL on the performance of Lacaune sheep under intensive management. We recorded 8136 lactations from 4220 ewes on one farm for the period 2005–2010, and data from a total of 6762 complete lactations 1–4 were included in the study. The length of the dry period following the current lactation was studied. The larger the total milk yield (MY) and daily milk yield (DMY), the shorter was the DPL before the next lactation. DPL correlated with MY (r=−0·384), DMY (r=−0·277) and the lambing-to-conception interval (LC; r=0·201, P<0·0001) in the global analysis of all lactations (lactations 1–4). The influence of previous-DPL (P-DPL), or the length of the period prior to the start of the next lactation, was studied for 4318 lactations. P-DPL was classified into five intervals: very short (P-DPL-XS), 1–30 d; short (P-DPL-S), 31–60 d; medium (P-DPL-M), 61–90 d; long (P-DPL-L), 91–120 d; and very long (P-DPL-XL), >120 d. P-DPL positively correlated with lambing-to-next conception interval (LNC; r=0·095, P<0·0001) for lactations 1–4. LNC was significantly shorter for P-DPLs that were very short, short, or long (P-PDL-XS, 144·2±67·8 d; P-PDL-S, 149·1±57·2 d; P-PDL-L, 152·0±53·7 d) than for groups with very long or medium P-PDLs (P-DPL-XL, 161·5±62·9 d; P-DPL-M, 169·0±74·8 d; P<0·0001). Moreover, P-DPLs that were very short, long, or very long were associated with the lowest milk yields (P-PDL-XS, 377±215 l; P-PDL-l, 370±168 l; P-PDL-XL, 396±196 l). These yields were significantly lower than the yields for short and medium P-DPLs (P-DPL-S, 432±187 l; P-DPL-M, 436±191 l; P<0·0001) when averages of lactations 1–4 were analysed. These results indicate that lactations with larger MY are followed by a shorter dry period, and that a dry period of 30–90 d leads to larger yields in the next lactation. The best LNC was associated with the shortest Previous-DPL. Hence, 30–60 d should be the optimal dry period length for Lacaune sheep under intensive conditions.

scholarly journals Lactation Characteristic of Etawah Crossed Breed Goats Under Intensive Management

2020 ◽  
Vol 44 (1) ◽  
Author(s):  
Yuni Suranindyah ◽  
Budi Prasetyo Widyobroto ◽  
Sulvia Dwi Astuti ◽  
Tridjoko Wisnu Murti ◽  
Adiarto Adiarto
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Body Condition ◽  
Body Condition Score ◽  
Standard Operating Procedure ◽  
Lactation Period ◽  
Intensive Management ◽  
Rate Of Increase ◽  
Condition Score ◽  
Daily Milk Yield

The study aimed to describe lactation characteristic of Etawah Crossed Breed goats raised under intensive management. The study located in BBPTU HPT Baturraden, Purwokerto, used 27 female pregnant goats, at 24 to 27 months old. The goats were managed followed standard operating procedure of the research institute. The data consisted of body size and body weight, colostrum and milk yield, lactation period and reproductive performance. The results showed the average of daily milk yield, lactation period, total milk and colostrum production in first lactation were 960±340 mL/day, 157±41 days, 114,720±68,900 mL and 415±240 mL/day. The proportion of monthly milk production from initial lactation to dry off were 21.27, 22.17, 20.18, 17.29, 12.52, 9.13, and 5.65% of total lactation yield, respectively. Peak production ranged from first to second months of lactation, the highest was in the week 4th, averaged of 1080 mL/day. Production persistency was 66.39%. The rate of increase toward peak was 5.60%/week and rate of decline from peak was -3.92% of milk yield in the previous week. Trend equation of lactation curve was Y = 8412.7 –233.65 x. Means period of postpartum mating, service per conception and body condition score were 88.7±39.2 days, 1.2 and 3.45, respectively. There was no correlation between postpartum mating, body condition score and milk production. The study concluded that Etawah Crossed Breed goat under intensive management had short lactation period, early peak production, low persistency. The dry period was estimated 3 months and pregnancy occurred after peak production. 

ПРОЯВЛЕНИЕ ФУНКЦИОНАЛЬНЫХ СВОЙСТВ ВЫМЕНИ ГОЛШТИНСКИХ КОРОВ АВСТРАЛИЙСКОЙ СЕЛЕКЦИИ В УСЛОВИЯХ ЮГА РОССИИ

2019 ◽  
pp. 23-25
Author(s):  
V.A. KARATUNOV ◽  
I.N. TUZOV
Keyword(s):  
Functional Properties ◽  
Milk Yield ◽  
Test Group ◽  
Control Group ◽  
Lactation Period ◽  
The Third ◽  
Group I ◽  
Probiotic Preparation ◽  
Daily Milk Yield ◽  
Daily Milk

Изучены функциональные свойства вымени коров голштинской породы австралийской селекции, выращенных с использованием повышенных норм выпойки молока и добавлением пробиотического препарата целлобактерин . В сельхозпредприятии Краснодарского края, на потомках импортного скота голштинской породы австралийской селекции, завезенного в 2008 году. Для проведения опыта от нетелей линии Рефлекшн Соверинг 198998 получили телят и сформировали 4 группы подопытных телочек по 16 голов (n64): I контрольная, II, III, IV опытные. Животные были аналогами по происхождению, живой массе и возрасту. Различие между группами заключалось в технологии их выращивания. Телки контрольной группы выращивались по технологии принятой в хозяйстве, а животных II, III и IV опытных групп кормили опытными рационами. В состав кормовых рационов телочек опытных групп входило неодинаковое количество кормов животного происхождения и пробиотический препарат. После отела было установлено, что коровы опытных групп превосходили сверстниц I контрольной группы по обхвату вымени на 0,83,0 см. По 3 лактации различия по изучаемым промерам подопытных групп составили 1,33,5 см. При изучении промеров глубины вымени по 1 и 3 лактации установлена такая же закономерность по их увеличению, как и по обхвату вымени. Наиболее высокие суточные удои установлены у коров III группы 26,2 кг, превосходство над сверстницами контрольной группы по этому показателю составило 4,3 кг, или 19,6. По скорости молокоотдачи животные контрольной группы уступали сверстницам опытных групп. Индекс вымени во всех группах был достаточно высоким, и составлял по 1й лактации 44,846,2, по 3й 45,347,4. Суточные удои коров по 3 лактации возросли. Доказана зависимость между величиной вымени и удоем за лактацию. Интенсивное выращивание подопытных телок с добавлением пробиотического препарата положительно отразилось на увеличении у них промеров вымени, когда они стали коровами, что способствовало повышению удоев с 1по 3 лактации. Установлено, что коровы опытных групп по 1 лактации превышали сверстниц контрольной на 1,44,3 кг. По 3 лактации превышение составило 1,45,4 кг. Установлено, что коровы опытных групп превосходили сверстниц I контрольной группы по функциональным свойствам вымени.Functional properties of udders of Holstein cow breed of Australian selection grown with the use of increased norms of milk feeding and the addition of Cellobacterine probiotic preparation were studied. Research was carried out on the basis of agricultural enterprise located on the territory of Krasnodar region using the offspring of Hostein cow breed of Australian selection imported in 2008. 4 groups of test cow calves consisting of 16 animals (n64) received from Reflection Sovereign bred heifers 198998 were formed to carry out the experiment. There was group I which was used as control, and groups II, III, and IV which were used as test groups. Animals had similar origin, live weight and age. The groups were differentiated by growth technology. Cow calves from the control group were grown according to the traditional technology, and animals from group II, III, and IV received experimental feed. Nonuniform quantity of feeds of animal origin and probiotic preparation were included in feed rations of cow calves from test groups. After calving it was found that test cows were superior to animals from control group I in udder circumference by 0.83.0 cm. During the third lactation period the differences according to the studied measurements of test groups amounted to 1.3 3.5 cm. Analysis of udder depth measurements during the first and the third lactation period showed the same tendency towards increasing as during the analysis of udder circumference. The highest daily milk yield was registered in the cows from group III 26.2kg, the superiority to the cows from the control group in this parameter amounted to 4.3 kg or 19.6. Milk flow speed of control group animals was inferior to that of the cows from test groups. Udder index was rather high in all of the groups and during the first lactation period amounted to 44.846.2, the third 45.3.47.4. Daily milk yield increased during the third lactation period. The dependence of the size of the udder on milk yield per lactation was proved. Intensive growth of test cow calves with the addition of probiotic preparation positively influenced the increase in udder measurements when they became grown cows, which facilitated the increase in milk yield from the first to the third lactation period. It was found during the first lactation period test group cows were superior to the cows from the control group by 1.4 4.3 kg. The increase amounted to 1.4 5.4 kg during the third lactation period. It was also found that test group cows were superior to the cows from the control group in terms of udder functional properties.

The level of milk productivity and reproductive ability of cows depending on the duration of the open days period

2021 ◽  
pp. 15-23
Author(s):  
I. E. Ivanova ◽  
N. E. Otekina ◽  
M. A. Sitnikova
Keyword(s):  
Milk Yield ◽  
Reproductive Traits ◽  
General Idea ◽  
Control Group ◽  
Lactation Period ◽  
Milk Productivity ◽  
Holstein Breed ◽  
Reproductive Ability ◽  
Daily Milk Yield ◽  
Experimental Group

The open days period is one of the components of the physiological cycle of the cow, during which it must be prepared for effective insemination. The duration of this period as a production indicator gives a general idea of the reproductive traits of the herd as a whole, and of each animal in particular. In order to increase milk production, it is possible to extend the open days period to obtain a longer lactation. Studies of this issue show that at the same time the dry period also extends and the average daily milk yield as the whole for lactation decreases. The purpose of the research was to determine the level of milk productivity and reproductive ability of cows depending on the duration of the open days period. The research has been carried out under the conditions in the APC “Emurtlinsky” in the Tyumen region, which is a breeding farm for the breeding of cattle of Holstein breed. It has been found that with an increase in the duration of the open days period from 93 days in the control group to 146 days in the experimental group the duration of barrenness was 3 and 56 days, respectively. It has been found that on the 1st day of milk yield per cow, the milk loss was 4,9 kg, and the absolute annual milk loss in the cows of the experimental group was in the range of 275 kg. The conducted studies suggest that with the increase in the duration of calving interval, there is the decrease in the milk yield of cows per year. The use of cows with the increase in the open days period above the norm recommended by specialists is unjustified. The increase in milk yield due to the lengthening of the lactation period is not effective, because it eventually leads to the increase in the number of days of barrenness and milk loss.

scholarly journals Influence of pre and postpartum alpha-tocopherol supplementation on milk yield, milk quality, and udder health of Jersey crossbred cows at tropical lower Gangetic region

2020 ◽  
Vol 13 (9) ◽  
pp. 2006-2011 ◽  
Author(s):  
Amit Kumar Singh ◽  
Champak Bhakat ◽  
Tripti Kumari ◽  
Dilip Kumar Mandal ◽  
Anupam Chatterjee ◽  
...  
Keyword(s):  
Health Status ◽  
Milk Yield ◽  
Milk Quality ◽  
Alpha Tocopherol ◽  
Control Group ◽  
Lactation Period ◽  
Crossbred Cows ◽  
Udder Health ◽  
Cell Counts ◽  
T1 And T2

Background and Aim: Alpha-tocopherol supplementation influences milk yield, milk quality, and udder health of dairy cows, which needs to be investigated for Jersey crossbred cows at hot-humid climate. Therefore, the present study was framed with an objective to study the effect of pre and postpartum Alpha-tocopherol supplementation on milk yield, milk quality, and udder health status of Jersey crossbred cows at tropical climate. Materials and Methods: For this study, 19 similar parity, body condition score, and production level dairy animals were separated randomly into three groups, namely, Control, T1 and T2. Control group (no supplementation) was compared with two treatment groups, namely, T1 and T2. Supplementation of Alpha-tocopherol was done in concentrate fed to the animals (at 1 g/cow/day) 30 days prepartum to 30 days postpartum in T1 and 30 days prepartum to 60 days postpartum in T2 groups. Observations were taken for different parameters up to 5 months of lactation. Results: Statistically analyzed data revealed that overall significantly (p<0.01) more milk production was found in T2, followed by T1 than the control group. Overall significantly (p<0.01) lower somatic cell counts and modified California mastitis tests were recorded in T2, followed by T1 than the control group. Overall significantly (p<0.01), better milk quality in terms of methylene blue reduction test was found in T2, followed by T1 than control groups. Differences in the milk composition of all three groups were non-significant (p>0.05). Conclusion: Supplementation of Alpha-tocopherol during prepartum to initial lactation period may enhance milk yield, milk quality, and udder health status of Jersey crossbred cows at the tropical lower Gangetic region.

Characteristics of the chemical composition of wet flattened corn grain and use of IT in the feeding of cows

2020 ◽  
pp. 20-29
Author(s):  
K. Kireeva ◽  
N. Kostomakhin ◽  
I. Pushkaryev ◽  
T. Litvintseva ◽  
A. Kuzikeeva
Keyword(s):  
Milk Yield ◽  
Starch Content ◽  
Control Group ◽  
Dry Period ◽  
High Starch Content ◽  
High Starch ◽  
The Difference ◽  
Daily Milk Yield ◽  
Experimental Group ◽  
Corn Grain

In all types of cereals corn has the highest energy content; the chemical composition of corn is distinguished by high starch content up to 70 %. Cows are able to give high productivity when the rational use of this feed as part of the ration. The purpose of the work was to compare the nutritional content of wet flattened corn grain and the influence of feeding it as an additive to the main ration on the dairy productivity of cows. Two groups of dry cows-analogues have been formed for the experiment. Wet flattened corn grain has been fed to mature cows for 110 days, starting from the dry period (30 days before the expected calving) and during the beginning of lactation (starting from 15 days and for 60 days). High starch content has been found in the wet flattened corn grain – 58,5 %. The results of control milking after calving at the period of increasing the milk have been shown a sharp increase in daily milk yield in both groups: in the control group up to 21,97 and in the experimental group up to 29,37 kg of milk. The difference was 7,4 kg and was significant at P ≤ 0,001. After a month of productivity control, there was the increase in the average daily milk yield compared to the previous month by 2,33 kg in the control group and by 1,75 kg in the experimental group, amounting to 24,3 and 31,12 kg, respectively. The difference between the groups was 6,82 kg of milk and was significant at P ≤ 0,05. According to the results of feeding wet flattened corn grain as part of the ration to cows during the dry period and at the period of increasing the milk yield (for 60 days), then average of 1897,9 kg of milk per head has been obtained from cows of the experimental group, which was by 268,0 kg more than from analogues of the control group.

Diphenyl diselenide subcutaneous supplementation of dairy sheep: effects on oxidant and antioxidant status, inflammatory response and milk composition

2019 ◽  
Vol 59 (3) ◽  
pp. 461 ◽  
Author(s):  
Angelisa H. Biazus ◽  
Chrystian J. Cazarotto ◽  
Gustavo Machado ◽  
Nathieli B. Bottari ◽  
Mariana S. Alves ◽  
...  
Keyword(s):  
Inflammatory Response ◽  
Interleukin 10 ◽  
Milk Composition ◽  
Fat Content ◽  
Control Group ◽  
Lactation Period ◽  
Diphenyl Diselenide ◽  
Dairy Sheep ◽  
Positive Effects ◽  
Anti Inflammatory

Diphenyl diselenide ((PhSe)2) is a organoselenium compound with potent antioxidant properties. Therefore, the aim of the present study was to evaluate whether subcutaneous supplementation of (PhSe)2 in dairy sheep has positive effects on milk composition, as well as on the prevention of oxidative stress and exacerbated inflammatory response. For this, 16 primiparous recently calved sheep were divided into the following two groups, with eight animals in each: Group A, the control group; and Group B, the group subcutaneously supplemented with five doses of (PhSe)2 of 3.0µmol/kg each every 7 days. Blood samples from supplemented animals showed increased concentration of antioxidant enzymes (catalase, superoxide dismutase, glutathione peroxidase and glutathione-S-transferase), and reduced reactive oxygen species and lipid peroxidation, which prevented oxidative damage in the lactation period, as well as increased seric interleukin-10, an anti-inflammatory cytokine. In the sera, supplemented animals showed increased total antioxidant capacity and ferric-reducing ability of plasma compared with the control group. As a consequence, supplemented animals showed increased antioxidant variables, as well as reduced protein oxidation in milk samples. Moreover, milk from supplemented sheep showed a higher fat content, and lower total protein and lactose contents in some periods in the study, than did not-supplemented ewes. Seric concentrations of interleukin-1 were lower on Days 30 and 45 in supplemented animals, as well as the concentrations of tumour necrosis factor α in all periods, than were those in the control group, whereas the interleukin-10 concentrations were higher. Thus, dairy sheep supplementation of (PhSe)2 activated antioxidant and anti-inflammatory responses, and increased milk fat content. Moreover, this protocol increased the antioxidant and, consequently, reduced the oxidant concentration in milk, which is desirable for product quality.

scholarly journals On designing the average lactation curve at the ascending phase

1962 ◽  
Vol 34 (1) ◽  
pp. 162-168
Author(s):  
Aarne Mäkelä
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Lactation Period ◽  
Lactation Curve ◽  
The Mean ◽  
The Individual ◽  
Daily Milk Yield ◽  
Daily Milk

Comparisons are made between different methods to find the peak production (maximum daily milk yield) and methods to design the average lactation curve at the ascending phase in dairy cows. It was noted that in order to determine the height and location of the maximal producing capacity of a cow in a known lactation period, it is preferable to choose the peak production as a mean of three subsequent best days. It was also noted that the usual methods for drawing the average lactation curves do not give a true picture of the height and location of the peak. The author suggests a method for determining the average lactation curve at the ascending phase by using the averages of both milk productions and times involved in reaching the peak and known fractions (e.g. 1/8, 1/4, 1/2, 3/4, and 5/4) of it. In this lactation curve the peak production is the mean of the peaks of individual cows, and the time involved in reaching it is the mean of the durations of the ascending phases of the individual cows.

scholarly journals Assessment of the degree of lameness in cows

2022 ◽  
Vol 354 (11-12) ◽  
pp. 43-45
Author(s):  
S. Yu. Kontsevaya ◽  
A. M. Nefedov ◽  
V. I. Lutsay ◽  
S. I. Lavrov ◽  
D. A. Pekurovsky
Keyword(s):  
Milk Yield ◽  
Systematic Approach ◽  
Pain Syndrome ◽  
Pathological Process ◽  
Reproductive Hormones ◽  
Lactation Period ◽  
Daily Milk Yield ◽  
To Receive ◽  
Finger Pad ◽  
Daily Milk

Relevance. The structure of the hoof of cows is a complex biological mechanism consisting of the hoof joint, hoof bone, finger pad, sole, hoof wall, etc. According to V.A. Lukyanovsky (1982), hooves are an additional heart of the animal, since when the hoof hits the ground, the blood actively rises, which allows to create auxiliary pressure in the blood vessels, facilitating the work of the heart muscle. When this system is violated, pathologies of the cardiovascular system often develop. The appearance of foci of the pathological process in different parts of the hoof will not only disrupt the work of the heart, but also cause discomfort, pain, and most importantly — lameness, which will be the driving force in a significant decrease in the productivity of cattle.Methods. Scientists identify three main signs of developing lameness in an animal. The first is the position of the back when walking, normally the back should be smooth and straight, while with the onset of lameness, the animal will carefully rearrange the limb, thereby straining the dorsal muscles, after which a bend in the back will be observed. The second sign is a short step, since with pain syndrome, the animal tries to minimize the load on the diseased limb. The third sign will be the obvious protection of the diseased limb, as a result of which the animal will completely cease to rely on the limb, both when walking and when standing.Results. A systematic approach will allow us to present a mathematical model of a healthy animal and of lame one. Thus, the following pattern can be identified: In order to receive nutrients together with the feed, the cow must reach the feeder, therefore, depending on the degree of lameness, there is a decrease in the consumption of dry matter, up to 15%. Based on this, it can be calculated that with a lack of nutrients and energy, there will be a decrease in milk yield of up to 36%. Which, according to P.I. Nikanorov and I.M. Kasyanov, will lead to a loss of up to 300 kg of milk for the entire lactation period. It was found that in the presence of overgrown and deformed hooves, the daily milk yield of cows is reduced by 5–12%, and with the appearance of cracks in the fragments of the horny capsule — by 19–20%. Also, the birth of a calf is required to obtain milk, and the presence of lameness will negatively affect the production of reproductive hormones, lead to the appearance of “quiet” hunting, which in turn will indirectly lead to a loss of milk productivity.

Comparative effectiveness of the use of wet flattened corn grain in the rations of lactating cows

2021 ◽  
pp. 25-32
Author(s):  
K. V. Kireeva ◽  
I. A. Pushkaryev ◽  
N. M. Kostomakhin ◽  
T. A. Litvintseva
Keyword(s):  
Milk Yield ◽  
Practical Interest ◽  
The Body ◽  
Control Group ◽  
Lactating Cows ◽  
Daily Milk Yield ◽  
Experimental Group ◽  
Corn Grain ◽  
Corn Grains ◽  
Daily Milk

In order to effectively provide the body of cows with energy during the increasing the milk yield without the risk of acidosis, progressive animal breeders of the Altai Territory include wet flattened corn grain in the composition of concentrated feed. The question of the expediency and economic effectiveness of using wet flattened corn grain for cows of various physiological groups – first-calf heifers and mature animals continues to be debatable. Therefore, a comparative assessment of two options for feeding wet flattened corn grain to cows under the conditions of the Altai Territory is considered promising in modern animal husbandry and is of great practical interest. The purpose of the work was to identify the optimal and economically feasible option for using wet flattened corn grain in the rations of lactating cows. When using wet flattened corn grains in an amount of 7,1 % of the nutritional value of the ration the first-calf heifers during the period of increasing the milk yield, productivity has increased by 20,9 %. The average daily milk yield was 17,3 kg, which significantly exceeded the indicator of the control group (P > 0,95). The inclusion of wet flattened corn grains in the ration of mature cows in the amount of 1 kg for 30–35 days before calving, then 4,5 kg from 15 to 75 days after calving allows us to get the average daily milk yield of 30 kg or 20,3 % higher than that of the control group of herdmates (P > 0,95). The effectiveness of the use of wet flattened corn grain had significant indicators: the total profit from the sale of dairy products of the first-calf heifers of the experimental group amounted to 16 251,3 rubles/head, and from the sale of milk of mature cows of the experimental group it was 30 346,43 rubles/head.

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