scholarly journals Вплив змішанолігандного комплексу кобальту на його обмін у організмі високопродуктивних корів

2017 ◽  
Vol 7 (4) ◽  
pp. 559-563
Author(s):  
O. V. Smetanina ◽  
I. I. Ibatulin ◽  
V. S. Bomko ◽  
L. G. Bomko ◽  
O. A. Kuzmenko
Keyword(s):  
Milk Yield ◽  
Mixed Ligand Complex ◽  
Fat Content ◽  
Mixed Ligand ◽  
Economic Research ◽  
Control Group ◽  
Ligand Complex ◽  
Positive Balance ◽  
Experimental Group ◽  
Daily Milk

<p>In the scientific and economic research we investigated the influence different levels of mixed ligand complex of Cobalt on milk productivity and its exchange in the organism of highly productive cows of Ukrainian Black-and-White milk breed in combination with sulfates: Zinc 650 g/t, potassium 38 g/t, sodium selenite 1.8 g/t. For cows of the 1st control group, we administrated 8.9 g/t of cobalt sulfate, 2nd group – 9.7 g/t of mixed ligand complex of cobalt, 3rd, 4th and 5th experimental groups respectively, were fed into rations, g/t: 7.3; 4.9, and 2.4. As a result, the cows of the 1st control group and the 2nd experimental group the deficit in Cobalt was eliminated 100 % to the current norm, and for cows of the 3rd, 4th and 5th experimental groups - 75, 50 and 25 %.<br />The conducted researches have proved that the highest average daily milk yield of natural fat had cows of the 3rd experimental group, which consumed mixed fodder in the composition of mixed ligand complex of Cobalt in the amount of 75 % by concentration of the metal, which prevailed the analogues of the control group for this indicator, respectively, by 4.4 kg (р≤0.01), or by 9.7%. Cows of the 2nd, 4th and 5th experimental groups according to the average daily milk fat content of the natural fat were dominated by analogues of control, respectively, by 2.1 kg or 4.8 %; 3.2 kg or 7.1% (p≤0.05); and 1.3 kg, or 2.9 %. During the experiment, fat content of milk of cows of the 3rd experimental group exceeded fat content of milk of control group of cows by 0.03%, and in terms of milk, the 4% fat content milk yield was 3649.7 kg, which is 10.8 % (p≤0.01) higher yields of experimental cows in the control group. As for the content of protein in milk, there was no significant difference between the groups in this indicator. The use of sulfuric acid Cobalt in accordance with the recommended norm in the diet of experimental cows resulted in its positive balance in the body at 4.87 mg per head per day. And in the cows of the 2-5th experimental groups who ate this trace in the form of a mixed ligand complex the balance was, respectively, 8.19 % (p≤0.01), 10.07 (p≤0.01), 8.89 (p≤0.01), and 8.05 (p≤0.01).</p>

scholarly journals Digestibility of substances, balance of Nitrogen, Zinc and Manganese in highly productive cows of the Holstein breed of German selection in the first period of lactation for feeding mixed ligand complexes of Zinc, Manganese and Co-balt

2021 ◽  
Vol 23 (94) ◽  
pp. 86-92
Author(s):  
Yu. G. Kropyvka ◽  
V. S. Bomko
Keyword(s):  
Mixed Ligand Complex ◽  
Mixed Ligand ◽  
The Body ◽  
Mixed Ligand Complexes ◽  
Control Group ◽  
Feed Mixture ◽  
Ligand Complex ◽  
Holstein Breed ◽  
Positive Balance ◽  
Experimental Group

The article deals with the results of research to study the digestibility of nutrients in the ration and metabolism of Nitrogen, Zinc and Manganese in high-yielding Holstein cows of German selection in the first period of lactation for feeding mixed ligand complexes of Zinc, Manganese and Cobalt. The research was performed in the conditions of Terezyne Ltd., Bila Tserkva district, Kyiv region. There was an increase in the coefficients of digestibility of dry matter in cows of the 2nd-5th experimental groups compared with animals of the 1st control group, respectively by 1.8–3.5 % (P < 0.05); organic matter by 0.3–2.5 %; crude protein by 0.5–4.2 % (P < 0.05 – P < 0.01); crude fat by 1.1–1.8 %; crude fiber by 1.3–3.3 % and nitrogen-free extractives by 2.1–4.2 %. Cows of the experimental groups consumed more Nitrogen than the cows of the control group: 20.18 g or 2.4 % – the 2nd group, 55.06 g or 6.6 % – the 3rd, 42.52 g or 5, 1 % – 4th and 28.98 g or 3.5 % – 5th experimental group due to better eating of the feed mixture. General consumption level of Nitrogen in relation to excreted with milk and deposited in the body of cows of the control group was 32.02 %, and in animals of the 2nd, 3rd, 4th and 5th experimental groups – 33.59 %; 37.31; 36.99 and 34.97 %. In relation to the total digested amount, the proportion of Nitrogen deposited in the body and excreted with milk in animals of the control group was 42.38 %, and in the experimental – 44.25–47.34 %. Doses of Zinc, which provided its existing rate of 54–85 % due to the mixed ligand complex, positively influenced on the the metabolism of trace elements in the organism of experimental cows. Assimilation of Zinc in the organism was determined by the amount of its secretions with milk and deposits in the body and in absolute terms it was the lowest in cows of the 4th and 5th experimental groups – 562.7 mg and 671.6 mg against 740.8 mg in the 1st control group and the largest – 784.7 mg and 801.3 mg in animals of the 2nd and 3rd experimental groups. The use of a mixed ligand complex of manganese ensured its positive balance in the organism of cows and the absorption of the trace element in the organism of experimental cows ranged from 22.5 % in the 2nd experimental group to 33.2 % in the 3rd experimental group. The best indicators for the metabolism of Nitrogen, Zinc and Manganese were got in the third experimental group whose cows were fed a feed mixture, that in 1 kg of DM contained, mg: Zinc – 54.7; Manganese – 54.7; Cobalt – 0.7; Selenium – 0.3; Copper – 12 and Iodine – 1.1.

scholarly journals The feeding of the broiler chickens on fodder with sulphate and Zink mixed ligand complex and their slaughter characteristics

2019 ◽  
pp. 50-56
Author(s):  
A. Redka ◽  
V. Bomko ◽  
M. Slomchіnskiy ◽  
O. Chernyavskyy.
Keyword(s):  
Broiler Chickens ◽  
Mixed Ligand Complex ◽  
Mixed Ligand ◽  
Control Group ◽  
Broiler Chicks ◽  
Ligand Complex ◽  
Slaughter Weight ◽  
Economic Experience ◽  
The Difference ◽  
Experimental Group

The effectiveness of the use of sulfate and the mixed zinc ligand complex Zinc and the effect of their feeding on the slaughter indicators of broilers of the Cobb-500 cross were studied after the completion of scientific and economic experience and control slaughter conducted in the premises of the vivarium of the Bila Tserkva National Agricultural University. The difference in feeding conditions between the groups was that for the poultry of the first group, depending on age, compound feed was prepared using zinc sulfate in a dose corresponding to the introduction of 60, 50 and 40 g of element per 1 ton of feed (control), for the second - using a mixed zinc ligand complex at a dose that also corresponds to the introduction of 60, 50 and 40 g of element per 1 ton, and for the third - using a zinc mixed mixed ligand complex at a dose corresponding to the introduction of 45, 37.5 and 30 g. Zinc concentration in the mixed fodder decreased as the age of birds increased. The control slaughter, which has been carried out after the experiment, shows that the different dose use of Sulphate and Zinc mixed ligand complex differently influences on the slaughter characteristics of the control and experimental bird groups. Thus, the largest pre-slaughter weight (2649.3 g) of broiler chicks of the 3rd group is (p <0.01) if they consume mixed fodder with a mixed ligand complex of Zinc at doses corresponding to the adding of 45, 37.5 and 30 g of the element per 1 ton of mixed fodder. The pre-slaughter weight of the 2nd group, which has consumed mixed fodder with Zinc mixed ligand complex at a dose corresponding to adding 60, 50 and 40 g of the element per 1 ton of feed is also higher than in the control group (2549.3 g). But the probable difference for this index is not established. In general, the pre-slaughtered weight of the 2nd and 3rd group is higher than the weight of the the control group, respectively by 4.6 and 8.7 %. Regarding the mass of the gutted carcass, it was also greater in the birds of the 2nd and 3rd experimental groups, and the difference was significant. An analysis of the relative indicators of the yield of slaughter products showed that they were better in poultry that consumed compound feeds with a mixed zinc ligand complex. So, the output of a half-gutted carcass was the largest among broilers of the 3rd experimental group (84.19 %), and the difference in this indicator compared with the control was significant (p <0.05). Chickens of the 2nd and 3rd experimental groups showed a tendency to increase the output of the pectoral muscles, muscles of the limbs, skin, lungs and heart. The results of scientific and economic experience have shown that feeding compound feed with the mixed zinc ligand complex, in comparison with sulfate, can improve the slaughter quality and yield of edible carcasses. The relative index analysis of the slaughter products reveals that the poultry fed on Zinc mixed ligand complex, has better result. Thus, the yield of a semi-eviscerated carcass is the highest in broiler chicks of the experimental group № 3 (84.19 %), and the difference in this characteristics has been compared with the control group (p <0.05). There is an output increasing tendency of the thoracic muscles, limb muscles, skin, lung and heart in the 2nd and 3rd experimental group. But the probable difference of these indexes in the control and experimental groups has not been established, except for the heart output. Thus, it can be concluded that broiler chicks fed on fodder with Zinc mixed ligand complex, in comparison with Sulfate one, makes it possible to improve the slaughter characteristics and the yield of edible parts of the carcass, and the optimum dose is equivalent to 37.5 g of the element per 1 ton of the feed. Key words: broiler chickens, pre-slaughter weight, slaughter yield, carcass weight, mass of internal organs, Zinc mixed ligand complex, Zinc sulfate.

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.

scholarly journals Efficiency of use of zinc mixed liganding complex in compound feeds for chicken broilers

2019 ◽  
pp. 105-112
Author(s):  
A. Redka ◽  
V. Bomko ◽  
M. Slomchynskyi ◽  
A. Chernyavsky ◽  
S. Babenko
Keyword(s):  
Broiler Chickens ◽  
Mixed Ligand Complex ◽  
Gain Control ◽  
Live Weight ◽  
Mixed Ligand ◽  
Control Group ◽  
Meat Production ◽  
Selling Price ◽  
Ligand Complex ◽  
Broiler Meat

The effectiveness of the use of zinc mixed-ligand complex in feed for broiler chickens of the Cobb-500 was studied. It was found that the reduction of the dose of introduction into compound feeds for broiler chickens, for periods of cultivation of 5-21, 22-35 and 36-42 days, of mixed zinc complex from 60, 50 and 40 g to 45, 37,5 and 30 g of the element per 1 ton of compound feed shows the best results. Live weight of broilers of the 2nd group, which depending on the growing period 5-21, 22-35 and 36-42 days, consumed feed with mixed ligand complex Zinc in a dose corresponding to the introduction of 37.5, 30.0 and 25, 0 g of element per 1 ton of compound feed was the highest and at the age of 42 was 2669.2 g, which was 7.1% higher than that of the control group chickens. It was found that the use of zinc mixed-ligand complex in the doses corresponding to the introduction, by age, 37,5, 30,0 and 25,0 and 30,0, 25,0 and 20,0 g of element per ton of compound feed, compared with the introduction of mixed ligand complex at doses corresponding to the introduction of 1 t of compound feed 45, 37.5 and 30 g of element, increases the average daily increments for the whole period of the experiment by 4.2 and 2.9 g, or 7.2 (P <0, 05) and 5.1%. Feeding mixed fodder with zinc mixed ligand increased sales revenue by 28.4% and profitability of broiler meat production from 37.2% to 47.1%. Thus, the profit per head increased from 22.6 to 28.65 UAH. As a result of the production check, it is established that, provided the same selling price for the products, the use of compound feeds with the addition of zinc zinc-ligand complex has a positive effect on the conservation of livestock, increases the weight of the carcass, reduces feed costs for growth, which leads to increased profits increasing the level of profitability of meat production of broiler chickens. Key words: zinc mixed ligand complex, zinc sulfate, broiler chickens, daily average gain, control group, experimental group, economic efficiency, production check.

Influence of feed additives on digestibility of nutrients and nitrogen metabolism in Kholmogorskaya breed of cows in Central Yakutia

2021 ◽  
pp. 51-57
Author(s):  
N. M. Kostomakhin ◽  
N. D. Ivanova
Keyword(s):  
Nitrogen Metabolism ◽  
Milk Yield ◽  
Feed Additives ◽  
Feed Additive ◽  
Control Group ◽  
Central Yakutia ◽  
Lactating Cows ◽  
Daily Milk Yield ◽  
Experimental Group ◽  
Daily Milk

The results of research on the use of the feed additive “Ecostimul-2” and natural zeolite from the Khonguruu deposit in the Suntarsky district of the Republic of Sakha (Yakutia) in the rations of lactating cows have been presented in the article. The purpose of the work was to study the influence of feed additives “Ecostimul-2” and zeolite on the digestibility of nutrients and nitrogen metabolism in lactating cows of Kholmogorskaya breed under the conditions of Central Yakutia. Chemical analysis of feed, accounting of dairy productivity of cows has been carried out according to generally accepted methods. The cows of the control group have received the main ration. The cows of the experimental groups have been additionally received to the main ration: the 1st experimental feed additive “Ecostimul-2” in the amount of 200 mg/head/day, and the 2nd experimental group – “Ecostimul-2” in the amount of 200 mg/head/day and zeolite 200 g/head/day. The inclusion in the ration of lactating cows of Kholmogorskaya breed under the conditions of Central Yakutia of feed additives “Ecostimul-2” and zeolite of the Suntarsky deposit together has increased the digestibility of feed in the ration and improved the digestibility of nutrients and nitrogen metabolism. It has been found during the experiment that in cows have been receiving the feed additive “Ecostimul-2” and zeolite with the main ration (the 2nd experimental group) the average daily milk yield was 9,06 kg with a fat content of 3,8 % or was by 10,4 % higher than in the control group. In cows that have been received feed additive “Ecostimul-2” (the 1st experimental group) the average daily milk yield was 8,76 kg with the fat content of 3,77 % or was by 6,8 % more than in the control group.

EFFECT OF PVMC ON THE MILK PRODUCTIVIRY OF COWS

2021 ◽  
pp. 12-19
Author(s):  
О.В.к.б.н. ЛАТЫШЕВА ◽  
А.В. ИВАНОВ
Keyword(s):  
Milk Yield ◽  
Economic Effect ◽  
Maximum Level ◽  
Control Group ◽  
Milk Productivity ◽  
Significant Difference ◽  
The Difference ◽  
Daily Milk Yield ◽  
Experimental Group ◽  
Daily Milk

Изучено влияние белково-витаминного минерального концентрата (БВМК) на молочную продуктивность коров и рассчитана экономическая эффективность его применения. Для проведения опыта с учетом количества дней лактации были сформированы 3 контрольные и 3 опытные группы по 10 голов. В I контрольную и I опытную группы вошли животные на стадии раздоя (30—60 дней лактации), во II контрольную и II опытную группы — коровы в середине лактации (150—180 дней), в III контрольную и III опытную — животные в конце лактации (240—270 дней). Для коров опытных групп были составлены рационы с БВМК, которым заменяли пропорциональное количество концентрированных кормов и часть витаминно-минерального премикса. Коровы I опытной группы получали с рационом БВМК «Статус VI» в количестве 1200 г, II опытной — БВМК «Статус I» по 350 г, III опытной — БВМК «Статус I» по 250 г на 1 голову в сутки. Максимальный уровень молочной продуктивности по результатам опыта показали животные II опытной группы. Среднесуточный удой за 60 дней опыта у них составил 46,1±1,11 кг, что больше на 4,7 кг молока, или на 11,4% (P≤0,05), чем во II контрольной группе. В период раздоя среднесуточный удой за 60 дней опыта в I контрольной и I опытной группах был на уровне 36,4±1,37 кг и 42,4±1,22 кг молока соответственно. Достоверное различие (P≤0,01) между ними составило 6,0 кг молока, или 16,5%. Наименьший среднесуточный удой за период опыта показали животные III контрольной (26,4±1,20 кг) и III опытной (28,5±1,53 кг) групп. Различие между ними было менее существенным, чем у коров в период раздоя и в середине лактации, и составило 2,1 кг, или 8,0%. Применение БВМК в кормлении лактирующих коров дало выраженный экономический эффект. Дополнительно полученная прибыль в расчете на 1 голову в сутки составила: в I — 127,4 руб., во II опытной группе — 117,0 руб., в III — 33,4 руб. The influence of PVMC on the milk productivity of cows has been studied and the economic efficiency of its application has been calculated. To experiment, taking into account the number of days of lactation, 3 control and 3 experimental groups of 10 animals each were formed. The 1st control and 1st experimental groups included animals at the milking stage (30—60 days of lactation), the 2nd control and 2nd experimental groups — cows in the middle of lactation (150—180 days of lactation), 3 control and 3rd experimental — animals at the end of lactation (240—270 days of lactation). For the cows of the experimental groups, rations were made with PVMC, which was replaced by a proportional amount of concentrated feed and a part of the vitamin and mineral premix. Cows of the 1st experimental group received a diet of PVMC «STATUS VI» in the amount of 1200 g / head/day, the 2nd experimental group — PVMC «STATUS I» at 350 g / head/day, the 3rd experimental group — PVMC «STATUS I» 250 g / head/day. The maximum level of milk productivity according to the results of the experiment was shown by the animals of the 2nd experimental group. The average daily milk yield for 60 days of the experiment was 46.1±1.11 kg, which is more by 4.7 kg of milk or 11.4% (P≤0,05) than in the 2nd control group. During the period of milking, the average daily milk yield for 60 days of the experiment in the 1st control and 1st experimental groups was at the level of 36.4±1.37 kg and 42.4±1.22 kg of milk, respectively. A significant difference (P≤0,01) between them was 6,0 kg of milk or 16.5%. The smallest average daily milk yield throughout the experiment was shown by the animals of the 3rd control (26,4±1,20 kg) and 3rd experimental groups (28.5±1.53 kg). The difference between them was less significant than in animals during the milk period and in the middle of lactation and amounted to 2.1 kg or 8,0%. The use of PVMC in feeding lactating cows gave a pronounced economic effect. Also, the profit received per head per day was: in the 1st experimental group (milking period) — 127.4 rubles; in the 2nd experimental group (mid—lactation) — 117.0 rubles; in the 3rd experimental group (end of lactation) — 33.4 rubles.

THE EFFECTIVENESS OF THE USE OF SPLITS AND STRESS - FREE ANIMAL HANDLING METHODS IN THE MTF OF KARAGANDA REGION

2021 ◽  
Vol 1 (1) ◽  
pp. 57-65
Keyword(s):  
Body Temperature ◽  
Milk Yield ◽  
Research Work ◽  
Sharp Decrease ◽  
The Body ◽  
Control Group ◽  
Daily Milk Yield ◽  
Experimental Group ◽  
Daily Milk ◽  
Karaganda Region

The article describes research work in the basic farms of the central region of Kazakhstan. All experimental work was carried out in the conditions of «Astra-Agro LTD LLP» and «Salem» farm in the Karaganda region. When using the split and the fixator, no stress-causing factors (judging by the relatively calm behavior of the animals) were observed, and the average daily milk yield in the experimental group of the Salem farm decreased by 0.400 liters. or by 3.1%, when in the control group there is a sharp decrease in the average daily milk yield within 1.6 liters or 12.4% of milk. According to the results of the control milking in the experimental group of Astra-Agro LTD LLP, the average daily milk yield decreased by 1.2 liters or 9.1% of milk, and in the experimental group it decreased by 0.200 liters or 1.6%. As a result of stress in cows of the control groups noticed a redness of the eyes, the pulse in animals too «Astra-agro LTD» increased by 34% and in KKH «Salem» 38% breath exceeded 35% in LLP «Astra-agro LTD» KH «Salem» 46% of the variance in body temperature was observed. In the experimental group, the pulse of animals exceeded by 9% in «Astra-agro LTD» LLP, in «Salem» farm by 14% and the respiration of cows in «Astra-agro LTD» LLP and in «Salem» farm by 14%, the body temperature also fluctuated within the normal range.

IMPACT OF NEW ACTIVATOR RUMINAL MICROFLORA ON DAIRY COWS EFFICIENCY

2020 ◽  
Author(s):  
Д.Ю. ГРИГОРЬЕВ ◽  
Д.А. ПИРОГОВ ◽  
Д.В. ФРИЗЕН
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Milk Yield ◽  
Milk Fat ◽  
Economic Effect ◽  
Control Group ◽  
Entire Group ◽  
Average Content ◽  
Daily Milk Yield ◽  
Experimental Group ◽  
Daily Milk

Изучено влияние на продуктивность коров нового активатора рубцовой микрофлоры — «МегаБуст Румен» (МБР) на основе инактивированного ферментационного экстракта Trichoderma longibrachiantum и специализированного штамма дрожжей Saccharomyces cerevisiae в двух опытах. В первом эксперименте в опытной группе коровы в транзитный период получали по 100 г/день МБР за 7 дней до отела и с 1 по 150-й день лактации, в остальном содержание и кормление животных опытной (n=10) и контрольной (n=10) групп было идентичным. В среднем в сутки коровы в опытной группе давали молока 41,26±0,91 кг при среднем содержании молочного жира 3,8±0,33% и белка 3,34±0,06%, что на 6,81±0,62 кг молока больше (Р<0,05), чем в контрольной группе (34,82±0,78 кг при среднем содержании молочного жира 3,55±0,13 и белка 3,08±0,09%). Использование МБР в опытной группе способствовало существенному увеличению среднесуточного удоя (+1500 кг) в опытной группе по сравнению с контрольной на 1 голову, пересчитанного на содержание жира 3,5%, за первые 150 дней лактации. Экономический эффект применения МБР — это дополнительный чистый доход на 1 голову за период эксперимента — 40037 руб. Во втором опыте, который проводился на всей группе лактирующих коров, при скармливании на 1 голову в сутки 100 г МБР отмечали повышение добровольного потребления сухого вещества (+2 кг СВ), увеличение среднесуточного удоя (+4,4 кг) на 1 голову в день. Возврат инвестиций в активатор рубцовой микрофлоры на 1 руб. составил 12,7 руб. The effect of new rumen microflora activator — MegaBust Rumen (MBR) on the basis of inactivated fermentation extract Trichoderma longibrachiantum and a specialized strain of yeast Saccharomyces cerevisiae on the cows productivity was studied in two experiments.In the first experiment, in the experimental group, the cows received MBR in the dose 100 g/day in the transit period 7 days before calving and from the 1st to the 150th day of lactation, otherwise the keeping and feeding of the animals of the experimental and control groups were identical. In average, per day, cows in the experimental group gave milk 41.26±0.91 kg with an average content of milk fat of 3.8±0.33% and protein of 3.34±0.06%, which is 6.81±0,62 kg of milk is more (P<0.05) than in the control group (34.82±0.78 kg with an average content of milk fat of 3.55±0.13 and protein of 3.08±0.09%). The use of MBR in the experimental group contributed to a significant increase in the average daily milk yield (+1500 kg) in the experimental group compared to the control for 1 head, calculated on the fat content of 3.5% for the period of first 150 days of lactation. The economic effect of the use of MBR is an additional net income per head for the period of the experiment was — 40037 rubles. In the second experiment, which was conducted on the entire group of lactating cows, when feeding 100 g of MBR per head per day, an increase in voluntary consumption of dry matter (+2 kg DM), an increase in average daily milk yield (+4.4 kg) per 1 head per day were noted . Return on investment in the activator of ruminal microflora by 1 ruble amounted to 12.7 rubles.

The effect of feed supplements on the yield and composition of milk from cows grazing good pasture

1960 ◽  
Vol 27 (3) ◽  
pp. 419-426 ◽  
Author(s):  
M. E. Castle ◽  
A. D. Drysdale ◽  
J. N. Watson
Keyword(s):  
Milk Yield ◽  
Dry Matter ◽  
Statistical Difference ◽  
Fat Content ◽  
Control Group ◽  
Crude Fibre ◽  
Feed Supplements ◽  
Total Milk ◽  
Daily Milk Yield ◽  
Daily Milk

SummaryTwo experiments are described in which spring-calved Ayrshire cows were fed supplementary food when grazing good, leafy pasture.In the first experiment 6 lb of a mixture of three parts bruised oats and one part flaked maize was fed daily to three groups of five cows. One group received the supplement from 1 July until 30 October, and the other two groups from 1 August and 1 September respectively. A control group received no supplement.In no month was there any statistical difference in daily milk yield between supplemented and unsupplemented groups of cows. The group fed from 1 July gave the highest total milk yield in the period June to October, but with a return of only 1 gal of milk from 34 lb of meal.The length of the lactation was not significantly affected by the treatment.In the second experiment, three groups of four cows on a 9-week change-over trial (4 May-5 July) grazed herbage containing an average of only 17·6% dry matter and 3·8% crude fibre. On the three treatments the cows ate pasture only, pasture plus 1·6 lb hay/day and pasture plus 5·7 lb of meal/day. The meal consisted of four parts by weight of undecorticated cotton cake, four of bruised oats and three of locust beans.Milk yield was significantly increased from 41·8 lb on the all-grass ration to 43·2 lb/day on the meal treatment but the hay did not affect milk yield.The fat content of the milk was significantly increased from 3·77 to 3·91% on the hay treatment, whereas the solids-not-fat content of the milk was not significantly affected by any of the treatments.At the present-day prices of the feeds and with cows on good leafy pasture it was clearly uneconomic to feed the meal supplements.

Mineral feed additives in the rations of lactating cows

2020 ◽  
pp. 49-56
Author(s):  
S. Sukhanova ◽  
G. Uskov ◽  
T. Leshchuk ◽  
N. Pozdnyakova ◽  
V. Yaroslavtsev ◽  
...  
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Raw Materials ◽  
Animal Husbandry ◽  
Fat Content ◽  
Feed Additives ◽  
Control Group ◽  
New Mineral ◽  
Mineral Additives ◽  
Experimental Group

Scientists of the Kurgan State Agricultural Academy named after T. S. Maltsev conduct research on the development of diff erent feed additives and compound feeds, their use in feeding animals and poultry. It has been developed mineral additives, which used mineral components to meet the needs of macro- and microelements of cows during lactation. The purpose of the work was to solve the problem of lack of minerals in animal husbandry by preparing granular feed additives based on raw materials of domestic production, enriched with trace element salts. Feeding of experimental mineral additives positively aff ected the average daily milk yield already in the 1st month of lactation. Thus, in the 1st experimental group more milk has been obtained by 0.6 % and in the 2nd group by 1.9 % compared to the control one. In the 2nd month of lactation milk yield in the 1st experimental group was greater by 2.3 %, and in the 2nd experimental group – 4.0 % compared to the control group. The same trend has been observed in the following months: in the 3rd month of lactation the diff erence in milk yield compared to the control group was in the 1st experimental group 4.0 %, in the 2nd experimental group – 6.5 %, in the 4th month, respectively, 5.7 and 9.3 %. Milk yield for 120 days of lactation in cows of the control group was 2951.4 kg of milk (in terms of 4 % fat content) in the 1st experimental group more by 3.4 %, and in the 2nd experimental group by 6.2 %. The fat content in the milk of cows of the experimental groups was higher by 0.03 and 0.04 abs.%, and protein by 0.02 and 0.03 abs.%, respectively. In this regard, the sale price of 1 kg of milk has changed. In the control group it amounted to 21,48 rubles, in the 1st experimental group more by 0,7 %, and in the 2nd group by 1,0 %. This led to an increase in the profi tability of milk production: in the 1st experimental group by 4,5 %, and in the 2nd experimental group by 6,8 %. Consequently, the feeding of new mineral additives allowed to reduce the prime-cost of milk, increase milk productivity of cows and profi tability of milk production.

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