scholarly journals Commercial cross breeding of dairy cattle with beef bulls in Western Siberia

2021 ◽  
Vol 51 (3) ◽  
pp. 75-81
Author(s):  
В. О. Inerbaev ◽  
I. A. Khramtsova ◽  
A. T. Inerbaeva
Keyword(s):  
Dairy Cattle ◽  
Dairy Cows ◽  
Western Siberia ◽  
Live Weight ◽  
Carcass Weight ◽  
Control Group ◽  
Economic Experiments ◽  
Cross Breeding ◽  
Meat Productivity ◽  
Experimental Group

The results of commercial cross breeding of dairy cattle with meat bulls are presented. Scientific and economic experiments were carried out in Omsk and Novosibirsk regions. Ranked cows of the red steppe breed were selected for the experiment. They were artificially inseminated with the semen of bulls of the red steppe, Kalmyk and Hereford breeds. Bulls of each genotype were selected from the calves born and three groups were formed by the method of analogue groups: 1st control - the red steppe, 2nd experimental - crossbreed of Kalmyk × the red steppe, 3d experimental – crossbreed of Hereford × the red steppe. In the second experiment two groups were formed from castrated bulls of Simmental and Hereford breeds × Simmental hybrids: 1st control group of Simmental breed, 2nd experimental group - Hereford × Simmental hybrids. A highly reliable superiority in the live weight of young animals of the 2nd and 3d experimental groups was revealed. From the age of 9 to 15 months, it was 16.5-77.3 kg (p <0.05-0.001) compared to animals in the control group. In the group of the red steppe x Hereford, slaughter yield was 58.6%, which is higher than that of the first two groups, by 1.9 and 1.8% (p <0.05), the carcass weight was 209.3 kg, the red steppe - 172.2 kg (p <0.01). In the second experiment at the age of 8, 12, 15 and 18 months, the bulls of the 2nd experimental group outperformed the peers of the 1st control group by 15.2-29.4 kg (p <0.05-0.001). Their slaughter yield was higher than that of the control group, and accounted for 57.8%. In two experiments, crossbred groups of animals were characterized by a better meat productivity. Commercial crossbreeding of dairy cows with beef breeds of bulls allows to increase meat productivity and increase the population of the meat cattle.

Local mineral feed additives in the rations of steers of Hereford breed

2020 ◽  
pp. 28-39
Author(s):  
M. Grigoryev ◽  
N. Chernogradskaya
Keyword(s):  
Economic Effect ◽  
Live Weight ◽  
Negative Influence ◽  
Feed Additives ◽  
The Body ◽  
Control Group ◽  
Mineral Salts ◽  
Meat Productivity ◽  
Experimental Group ◽  
Mineral Feed Additives

Animals imported to Yakutia from other regions fall into feeding and housing conditions that differ from their usual agro-climatic conditions, which causes the problem of their adaptation. Yakutia is one of the areas where the feed of its own production has a lack of basic minerals, which affects the health and productivity of animals, which has an additional negative influence on the adaptation process of imported cattle. In order to replenish macro- and microelements in the body, it is necessary to introduce various local mineral feed additives, premixes, and use mineral salts into the ration. Under the conditions of Central Yakutia the influence of local mineral feed additives (zeolite of the Khonguruu Deposit in the Suntar district and sapropels of local lakes) containing macro- and microelements that increase the meat productivity of steers has been studied. As a result of the research the influence of local mineral feed additives on meat productivity and physiological condition of Hereford steers has been established. Influence of zeolite and sapropel in a complex with mineral salts on digestibility of nutrients of the ration and use of nitrogen, calcium and phosphorus by experimental animals has been defined. The influence of feed additives on the quality of meat products has been studied. The results have shown that the use of local mineral feed additives in the composition of ration of steers during the fattening period at a dose of 0,7 g zeolite per 1 kg of live weight of the animal and 200 g of sapropel in combination with 10 g of mineral salts contributed to the gain in live weight, carcass weight, carcass yield, yield of edible parts, and economic efficiency of fattening. For the entire period of the experiment the gain in live weight in groups was: in control group 2222,9 kg, in the 1st experimental group 2396,2 kg, in the 2nd experimental group 2471,1 kg. The total economic effect for the 1st experimental group for the period of experiment amounted to 44,3 thousand Rubles, for the 2nd experimental group 78,0 thousand Rubles or per 1 head/day 14,06 and 24,76 Rubles, respectively.

CONVERSION OF NUTRIENTS AND FEED ENERGY INTO MEAT PRODUCTS DURING FATTENING OF YOUNG KALMYK BREED IN YAKUTIA

2020 ◽  
Vol 15 (5) ◽  
pp. 719-724
Author(s):  
I.I. Sleptsov ◽  
◽  
A.A. Martynov ◽  
Keyword(s):  
Dietary Protein ◽  
Conversion Rate ◽  
Meat Products ◽  
Live Weight ◽  
Control Group ◽  
Food Protein ◽  
Meat Productivity ◽  
Experimental Group

The article presents the results of studies of the bioconversion of nutrients and feed energy into meat products when fattening young Kalmyk breed in Yakutia. The studies were carried out on the basis of the SCHPK Soloyun Megino-Kangalassky region. The experiment was organized on Kalmyk gobies fed from 17 to 18 months of age. For the experiments, 2 groups of animals were formed, which were divided into control and experimental groups. The control group consumed the main diet, the experimental group additionally consumed 200 g of Suntarsky zeolite per head. The main diet of animals by structure consisted of meadow hay 46%, haylage – 22% and mixed fodder 32% or 11.95 ECU per day. During the experiment, the live weight of the animals was almost identical. At the end of fattening, the animals of the control group yielded to the bulls of the experimental group by 3.5%. It was found that the gobies of the experimental group had higher indicators of meat productivity, which affected bioconversion. The analysis showed that the control group of bulls yielded to the experimental group in terms of pulp by 26.9%, in the deposition of food protein by 13.6%. The conversion rate of protein into food protein in the control group was 12.0%, and in the experimental group the indicator was 21.3%. The yield of dietary protein in the control group was 8.08 g, which is 33.6% less than in the experimental group. Thus, the calculation of bioconversion showed that the animals of the experimental groups, which additionally consumed Suntarsky zeolite, had a higher ability to transform nutrients and feed energy into meat products.

scholarly journals Technological methods of increasing the meat productivity of sheep in late lambing periods

2021 ◽  
Vol 209 (06) ◽  
pp. 61-70
Author(s):  
Larisa Pashkova
Keyword(s):  
Research Work ◽  
Live Weight ◽  
Control Group ◽  
Experimental Population ◽  
Technological Method ◽  
Housing Systems ◽  
The Difference ◽  
Meat Productivity ◽  
Group Chemical ◽  
Experimental Group

Abstract. The purpose of the research was to develop a method for increasing the meat productivity of sheep under various housing systems. Methods. All studies were conducted according to generally accepted methods. The experimental population of rams of the control and experimental groups was kept until the age of 3 months together with ewes on the pasture (suckling period) with further weaning at the age of 3 months. Further, the rams were divided according to the technologies of keeping: the control group – pasture (graziery), and the experimental group – indoor maintenance (fattening) up to 4 months of age, followed by control slaughter. Monthly weighing of the experimental young rams livestock was carried out. Results. The research work showed that the use of this technological method significantly contributed in increasing average gain and live weight, respectively, by 6.6 % (20 g) and 5.7 % (2.3 kg) and as a result, slaughter weight – by 9.2 % (1.6 kg) in young rams from the experimental group in comparison with analogues of the control group. Chemical, amino acid and microstructural analyses of samples of the longissimus of the livestock showed that the specimens of the young rams of the experimental group had the best food and market advantages. The efficiency of using this technological method is also confirmed by the calculated economic indicators – the difference in the level of profitability was 7.9 % in favor of the rams of the experimental group. The scientific novelty of the research work is a detailed study of the indicators of meat productivity under the influence of this technological method with the justification of its application and the introduction of both scientific and practical contributions to the development of sheep farming.

scholarly journals INFLUENCE OF «YANTOVET» ON THE MEAT PRODUCTIVITY OF RABBITS

2021 ◽  
Vol 246 (2) ◽  
pp. 6-9
Author(s):  
S.P. Arkhipova ◽  
◽  
L.F. Yakupova ◽  
O.A. Gracheva ◽  
◽  
...  
Keyword(s):  
Drinking Water ◽  
Average Daily Gain ◽  
Live Weight ◽  
Study Drug ◽  
Entire Period ◽  
Control Group ◽  
Slaughter Weight ◽  
Meat Productivity ◽  
Daily Gain ◽  
Experimental Group

The introduction of «Yantovet» into the diet of rabbits at a dose of 0,33 ml per 1 kg of live weight has a stimulating effect on the intensity of their growth and productivity. By the end of the experiment, the live weight of the experimental group was higher than that of the control by 13 %. The average daily gain for the entire period of experiments in the experimental group exceeded the same indicator in the control by 38,7 %. The rabbits of the experimental group had a higher level of productivity, as the slaughter weight and slaughter yield of rabbit carcasses in the experimental group in relation to the control group were higher by 16,6 and 2,9 %. The study drug is recom-mended to be used in the diet of rabbits in the composition of drinking water.

scholarly journals The effectiveness of the use of acidifiers in the industrial growing of broiler chickens

2016 ◽  
Vol 18 (2) ◽  
Author(s):  
S. V. Demchuschun
Keyword(s):  
Broiler Chickens ◽  
Live Weight ◽  
Permissible Limit ◽  
Carcass Weight ◽  
Control Group ◽  
Feed Conversion ◽  
Inorganic Acids ◽  
Experimental Group ◽  
Overall Mortality

As an alternative to feed antibiotics for saving poultry livestock and increasing productivity the acidifiers based on organic and inorganic acids are used more and more frequently. The article represents the results of study of effectiveness of Fidacid acidifier usage for breeding broiler chickens. The study has been conducted on two groups of broiler chickens of Ross 308 breed. The chickens of the experimental group except the full feed–stuff have been given the acidifier at a rate of 1 liter per 1 ton of water. The watering has been carried out from the 27th day of feeding for 10 days (27 – 31 and 34 – 38 days). It has been established that the acidifier watering from the 27th day of breeding chickens has contributed to the increase of preservation of livestock in 4.6%. The overall mortality of chickens has decreased in 2 times (P ≤ 0,001) and amounted to 4.3%, with the permissible limit up to 5%. It has been found that the application of the acidifier has promoted the economy of feed at higher productive indices. There has been a decrease in cost of feed per 1 head in 8.7% (P ≤ 0,01) and a decrease in feed conversion in the experimental group in 0.19 units. This is the evidence of better digestibility of feed and its taking by the bodies of chickens. The live weight of broiler chickens of the experimental group on the 43rd day of breeding increased in 47 grams and carcass weight increased in 30 grams, that is in 1.8% and 1.6% (P ≤ 0,01), respectively. The European index of efficiency in the experimental group has been 56.5 units higher than in the control group of chickens.

scholarly journals MEAT PRODUCTIVITY OF BROILER CHICKENS WHEN INCLUDING SUB-PRO PROBIOTIC IN THEIR DIET

2021 ◽  
Vol 212 ◽  
pp. 198-206
Author(s):  
D.V. Nikitchenko ◽  
◽  
V.E. Nikitchenko ◽  
D.V. Andrianova ◽  
◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Practical Importance ◽  
Live Weight ◽  
Pectoral Muscle ◽  
Relative Mass ◽  
Control Group ◽  
Negative Consequences ◽  
The Difference ◽  
Meat Productivity ◽  
Experimental Group

The possibility of including SUB-PRO probiotic instead of Maxus G feed antibiotic in the diet of broiler chickens of Ross 308 cross was studied to obtain products free of drugs for antimicrobial resistance usage. The dynamics of live weight and carcass weight of cockerels at 1-, 21-, 28-, 34-, 38- and 42-days old was determined. The males of the control group (group 1) reached live weight of 2619 ± 44.9, experimental - 2739 ± 46.2 or more by 4.38%, at P≤0.05 by 42 days of age, and those which received feed antibiotic ( group 3) - 2677 ± 45.1 (further, meat productivity of the latter was not studied, since they are not of practical importance). The mass of carcasses of the experimental group was equal to 1704 ± 23.1 g, which is 4.60% more than the control, at P≤0.05; the relative mass of muscle tissue increased with age by 10.78% in the experimental group in comparison with the 1-day -olds, in the control group - by 10.0%, whereas the mass of bones decreased by 16.75 and 16.59%, respectively (by the difference); the diameter of muscle fibers of superficial pectoral muscle of 42-day-old broilers of the experimental group increased with age by 6.94 times and amounted to 57.9 μm; in terms of microbiological parameters, carcass meat meets the requirements of the interstate standard GOST 31468—2012. At the age of 42 days, cockerels of the control group showed dystrophic changes in the superficial pectoral muscle in the form of an expansion of the endomysium diameter, with the accumulation of interfiber fluid (albuminous degeneration), while some cockerels of the experimental group have fibers with vacuoles and infiltration by immunocompetent cells (leukocytes, phagocytes). Adding SUB-PRO probiotic in the broilers’ diet instead of the feed antibiotic does not reduce productivity, but excludes the negative consequences of feed antibiotics.

The influence of compound feed with the enzyme Axtra XAP 101 on the growth, feed conversion and livability of broiler chickens

2020 ◽  
pp. 45-51
Author(s):  
N. Yu. Krotova ◽  
A. Y. Lavrentiev ◽  
V. S. Sherne
Keyword(s):  
Broiler Chickens ◽  
Live Weight ◽  
Optimal Dose ◽  
Poultry Meat ◽  
Productivity Index ◽  
Control Group ◽  
Feed Conversion ◽  
Meat Productivity ◽  
Positive Effect ◽  
Experimental Group

The poultry industry in Russia has significant prospects for the development of domestic production of eggs and poultry meat. Insufficient attention is paid to the practical application of enzyme drugs, although numerous studies have proven the effectiveness of these substances in feeding animals and poultry. The purpose of the research was to determine the feasibility and effectiveness of using the multi-enzyme drug Axtra XAP 101 produced by DuPont as part of compound feed for growing broiler chickens. A scientific and economic experiment has been carried out and various doses of the multi-enzyme drug Axtra XAP 101 have been experimentally studied as part of compound feed and the optimal dose in the amount of 7–9 % of the dry matter of the compound feed has been identified. Multi-enzyme drug Axtra XAP 101 influences on indices of meat productivity of broiler chickens. It has been found that this drug increases the average daily increase in live weight of broiler chickens, reduces feed conversion and has a positive effect on the livability of livestock. The highest value for livestock livability has been observed in the 3rd experimental group, where it was 97,67 %, which was by 0,32 % higher than in the control group, by 0,5 % higher than in the 1st experimental group and by 0,57 % higher than in the 2nd experimental group. The European productivity index was the highest in the 3rd experimental group and amounted to 412 points. This indicator was higher than in other groups: higher than the control group by 20 points, the 1st experimental group – by 12 points, the 2nd experimental group – by 5 points. Thus, the effect of using enzymes in wheat and barley diets is to increase and equalize the nutritional value of different varieties and batches of grain. Changing the location and mechanism of microbial fermentation as a result of adding an enzyme also has a positive effect on the health of poultry.

Beef productivity of steers when feeding protein-vitamin-mineral additive and protein-vitamin-mineral concentrate

2021 ◽  
pp. 44-52
Author(s):  
G. E. Uskov ◽  
N. M. Kostomakhin ◽  
N. I. Kulmakova
Keyword(s):  
Live Weight ◽  
Control Group ◽  
Bull Calves ◽  
Production Experiment ◽  
Mineral Additive ◽  
The Difference ◽  
Meat Productivity ◽  
Experimental Group ◽  
Total Gain ◽  
Preweaning Period

The purpose of the work was to study the influence of protein-vitamin-mineral additive and protein-vitamin-mineral concentrate on the growth, development and meat productivity of steers. Studies have been carried out on the rearing of steers when using the protein-vitamin-mineral additive based on extruded soybean with bentonite in the preweaning period and the protein-vitamin-mineral concentrate (with urea concentrate) when fattening steers. During the first research and production experiment in the calves of the 1st experimental group 30 % and in the bovine calves of the 2nd experimental group 40 % milk replacer have been replaced with a protein-mineral-vitamin additive. At the beginning of the experiment the calves of all groups had almost the same live weight. Starting from the age of 1,5 months the growth of the animals of the experimental groups began to prevail over the control group. Thus, the bull calves of the 1st experimental group at 2 months of age were larger than the control ones by 5,1 %, by the end of the experiment their superiority was 7,6 % (P < 0,01). The total gain in live weight of the bull calves of the 2nd experimental group was 9,4 % higher (P < 0,001) than in the control group. During the second research and production experiment on the use of protein-vitamin-mineral concentrate the difference in feeding was that the steers of the experimental group consumed complete feed, which included protein-vitamin-mineral concentrate (with urea concentrate) and bentonite. The gain in live weight of calves for 5 months of experiment in the control group was 136,7 kg, and in the experimental group it was 11,4 % more. The expenditures of feed per 1 kg of gain in EFU were by 10,1 % lower in the experimental group compared to the control group. The level of profitability of beef production in the control group was 16,1 %, and in the experimental group it was 26,5 %, which was more by 10,4 abs.%.

FEATURES OF BIOCONVERSION AND THE EFFICIENCY OF FATTENING YOUNG CATTLE OF THE KALMYK BREED IN THE REPUBLIC OF SAKHA YAKUTIA

2020 ◽  
Vol 15 (7) ◽  
pp. 1025-1035
Author(s):  
I.I. Sleptsov ◽  
◽  
A.A. Martynov ◽  
Y.S. Vasilyev ◽  
S.K. Okhlopkov ◽  
...  
Keyword(s):  
Meat Products ◽  
Live Weight ◽  
Control Group ◽  
Food Protein ◽  
Bull Calves ◽  
Production Complex ◽  
Young Cattle ◽  
The Republic ◽  
Meat Productivity ◽  
Experimental Group

This paper presents the results of studying the conversion of feed into nutrients in the carcass of bulls during the fattening of young Kalmyk breed in the conditions of Yakutia. The studies were carried out on the basis of the Soloosun agricultural production complex, Megino-Kangalassky region. The experiment was organized on Kalmyk bull-calves fed from 15 to 18 months of age. There were formed 2 groups of 25 bulls analogs: the control and the experimental one. The animals of the control group were fed according to the ration adopted on the farm. The diet of the animals from the experimental group included 200 g of Hongurin zeolite and 45 g of Kempendyai salt per animal. The main ration of animals by structure consisted of meadow hay 46%, haylage – 22% and compound feed 32% or 12.57 EFU per day. At the beginning of the experiment, the live weight of the animals was almost identical. At the end of fattening, the bulls of the experimental group in live weight exceeded the animals of the control group by 10.9 kg. Consequently, the experienced bulls had higher bioconversion rates, which was reflected in an increase in the meat productivity of animals. The analysis showed that the control group of bulls was inferior to the experimental group in terms of pulp by 11 kg., In the deposition of food protein by 1.3 kg. The calculation of the data on the conversion of protein into food protein showed that in the control group this indicator is 5%, and in the experimental group it was 6.2%. The yield of dietary protein in the control group was 40.4 g, in the experimental group – 52.8 g. Thus, the calculation of bioconversion showed that the animals of the experimental groups, which additionally consumed Hongurin zeolite and Kempendyai salt, had a higher ability to transfer nutrients and feed energy into meat products. The indicators of economic efficiency per 100 heads of fattening bulls of the Kalmyk breed are: profitability – 122.53%, cost price 1132 thousand rubles, profit – 1,388 thousand rubles, profit – 1.23 rubles per 1 ruble costs. The efficiency of beef production at a specialized feedlot increases by 22.53%.

scholarly journals MEAT PRODUCTIVITY OF KALMYK BREED BREEDS AT DIFFERENT DURATION OF THE PRODUCTION CYCLE AND LEVEL OF CONCENTRATES IN THE DIET

2020 ◽  
Vol 55 (3) ◽  
pp. 90-94
Author(s):  
R.A. Ulimbasheva ◽  
Keyword(s):  
Total Duration ◽  
Live Weight ◽  
First Grade ◽  
Control Group ◽  
Production Cycle ◽  
Meat Content ◽  
Bull Calves ◽  
Significant Difference ◽  
Meat Productivity ◽  
Experimental Group

The article presents the results of bulls control slaughter, morphological and varietal composition of the pulp of carcasses, depending on the duration of the production cycle and the level of concentrates in the diet. In the gobies of the control group, the total duration of the production cycle was 18 months (546 days), with a specific gravity of concentrates in the rations of 40 % in the experimental group – 16 months (482 days) – 50 %. The suckling period of calves in the control group was 210 days, in the experimental group – 182 days, rearing – 186 and 165 days, respectively, intensive final fattening – 150 and 135 days. The differences obtained both in the pre-slaughter live weight and in the weight of the paired carcass were 1,9 and 3,4 kg, respectively, without a significant difference between the groups. The superiority of bulls of the experimental group over the control group was established according to the leading studied indicators of the morphological composition of carcasses, except the mass of bones, cartilage, and tendons. Differences in the mass of the pulp in favor of the calves of the experimental group were 5,1 kg, the coefficient of meat content was 0,21 units, the ratio of the edible part to the inedible part in the carcass was 0,26 units. All other things being equal, from the bulls of the experimental group, a higher mass of pulp of the highest grade was obtained by 4,9 kg or 2,2 %, of the first grade – by 6,4 kg or 1,8 %. The yield of secondgrade pulp was higher in the carcasses of gobies of the control group by an average of 6,2 kg or 4 %. Thus, both groups of bulls showed high slaughter weight and slaughter yield, with insignificant intergroup differences. However, due to the shorter duration of the production cycle of growing and fattening, it turned out to be preferable to use beef production technology from bull calves of the experimental group.

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