Dairy productivity ewes' karachai breed of sheep and its relation with living mass and vertical zoning of pastures

2021 ◽  
pp. 17-21
Author(s):  
M. S. Gabaev ◽  
N. V. Berbekova
Keyword(s):  
Sea Level ◽  
Milk Production ◽  
Live Weight ◽  
Class Interval ◽  
Group V ◽  
Sheep Breeding ◽  
Breeding Selection ◽  
The Difference ◽  
Steep Slopes ◽  
Vertical Zoning

Milk production and live weight of queens in mountain meat-coarse-wool sheep breeding, as one of the main quantitative traits in postnatal ontogenesis, are more susceptible to the influence of paratypical factors, that is, they have a large “rate of reaction” to the conditions of feeding and maintenance.In order to resolve the question * how to select, what animals to leave for the tribe in the mountain meat coarse-wool sheep breeding *? We at OOO Dargan, a mountainous zone of the Kabardino-Balkarian Republic (KBR), according to the methodology, formed five groups of queens, with a class interval of 5 kg.It was found that the milk production of the queens had a certain relationship with their live weight, and was 32.4 kg in group V, which exceeds the same indicator of group IV by 1.4 kg; III - by 3.0; II - by 7.6; I - by 8.5 kg, the difference between IV and III groups is 0.6 kg.At 4 months of age, the rams of group V in live weight exceeded rams of groups IV and III by 0.7 and 0.4 kg, II - by 2.5 kg, I - by 5.3 kg, at 6 months of age - I at 7.9 kg, II - at 4.0 kg, III - 1.5 kg. There were no significant differences between IV and V groups - 0.7 kg.Along with this, it should be noted that with an increase in the vertical zoning of pastures above sea level (above sea level), with steep slopes, the higher milk production potential of large queens is leveled.The obtained research results indicate that in mountain meat and coarse-wool sheep breeding, selection for increasing the milk yield of ewes, in combination with the optimal live weight, is an effective method of increasing the live weight of young animals.

scholarly journals Reproductive ability and milk productivity of cows depending on breeding value of their progenitors

2017 ◽  
Vol 19 (74) ◽  
pp. 48-51
Author(s):  
L. V. Ferenz
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Live Weight ◽  
Breeding Value ◽  
Milk Productivity ◽  
The Third ◽  
Reproductive Ability ◽  
Service Period ◽  
Significant Difference ◽  
The Difference

The influence of bullock`s different breeding value for reproductive ability and milk production of their  daughters were investigated. Established that the age of first productive insemination of heifers Ukrainian black spotted milk breed, was 17.5–18.6 months and age of first calving – 26.6–27.8 months. Heifers` live weight at the first insemination was 361.4–407.1 kg. During first lactation the highest productivity had daughters from parents with breeding value by milk yield more than 801 kg. In the first lactation wasn’t found significant difference in duration service-period and interparturition-period for cows derived from progenitors with different breeding value. In the second lactation best indexes in duration service-period and interparturition-period for cows derived from progenitors with breeding value by milk yield 601–800 kg and more than 801 kg. In the third, the highest lactation, these indexes were best for cows derived from progenitors with breeding value by milk yield 601–800 kg. The difference in milk yield during first lactation between heifers received from progenitors with breeding value by milk yield less than 200 kg and heifers from bullock`s  with breeding value 401–600 kg was 292 kg. The difference in milk yield between heifers received from progenitors with breeding value by milk yield less than 200 kg and heifers from bullock`s  with breeding value  with breeding value 601–800 kg  was 660.3 kg. The difference in milk yield between heifers received from progenitors with breeding value by milk yield less than 200 kg and heifers from bullock`s  with breeding value more than 801 kg was  920.8 kg In the second lactation this difference was 589.8 (Р < 0.001), 841.5 (Р < 0.001) і 894.4 (Р < 0.001) kg of milk, in the third, the highest lactation – 754.5 (Р < 0.001), 951.8 (Р < 0.001) і 1335.7 кг (Р < 0.001).

The yield and composition of the milk of Finnish Landrace × Blackface ewes: II. Ewes and lambs grazed on pasture

1975 ◽  
Vol 85 (2) ◽  
pp. 315-323 ◽  
Author(s):  
J. N. Peart ◽  
R. A. Edwards ◽  
Elizabeth Donaldson
Keyword(s):  
Milk Production ◽  
Total Yield ◽  
Live Weight ◽  
Lactation Period ◽  
Stage Of Lactation ◽  
Grazed Pasture ◽  
Production Values ◽  
The Difference ◽  
Almost All

SUMMARYThe milk production of 14 Finnish Landrace × Blackface ewes suckling either single, twin or triplet lambs was recorded while they were wholly maintained on a high-quality grazed pasture. Intravenous administration of oxytocin followed by hand milking was used to estimate milk production within 4 days of parturition and then at weekly intervals during a 12-week lactation period. At each milking the milk from each ewe was retained for analysis. Herbage samples for analysis were cut by hand shears at weekly intervals at a height simulating the harvesting by the sheep. In vitro analysis showed a decline in the digestible organic matter in the herbage from approximately 75% in the early stages, to around 67% at the end of lactation. The percentage crude protein in the dry matter of the herbage was variable but tended to increase towards the end of the lactation period. The estimated mean total milk production values were 125, 176 and 193 kg for single-, twin- and triplet-suckled groups of ewes, respectively. Almost all of the difference in total yield between the groups of multiplesuckled ewes occurred in the first 4 weeks of lactation. Analysis of variance showed no significant differences between suckling groups in the concentration of any of the milk constituents. Regression analysis showed significant evidence for differences between the linear and quadratic components of the regressions on stage of lactation for the suckling groups only in respect of daily milk yield, energy and protein production. The concentration of constituents other than lactose was higher in colostral milk but the differences were statistically significant only in respect of energy, total solids and fat. The lactose content of ordinary milk was significantly higher than that of colostral milk. The mean daily live-weight gains of the single- and twin-suckled lambs were significantly greater than that of the triplet-suckled group.

scholarly journals Morphological assessment of the ewe udder in different breeds and their productivity

2021 ◽  
pp. 18-26
Author(s):  
A. P. Kitaeva ◽  
◽  
V. M. Mamedova ◽  
Keyword(s):  
Mammary Gland ◽  
Weight Gain ◽  
Milk Production ◽  
Milk Yield ◽  
Live Weight ◽  
Morphological Properties ◽  
Lactation Period ◽  
Sheep Breeding ◽  
Morphological Assessment ◽  
Selection Of

Dairy productivity of sheep is extremely important for rearing lambs, although insufficient attention is paid to the milking of sheep during selection and selection of sheep during mating. The milk yield of ewes is determined by measuring expressed, sucked milk, or by weight gain of lambs for a certain period of life. But in sheep breeding the greatest application is to determine this indicator by the increase in live weight of lambs in the first 20 days of life. This is due to the fact that in the first month of lactation, the ewes' mammary gland synthesizes the largest amount of milk, and lambs are fed exclusively on mother's milk for up to 20 days after birth. The milk yielding capacity of ewes depends on many factors, including the breed characteristics of the morpho-functional properties of their udder. Studies had been carried out on the morphological properties of the udder of ewes of such breedsas Tsigai, Merinolandschaf and Dorper. Some differences were noted in the linear assessment of their udder and the amount of milk obtained from them (milk yield). It was found that Merinolandschaf ewes exceed their peers of Tsigai and Dorper breeds by 2.6 cm or 17.5% (P <0.95) and 4.3 cm or 32.8%, respectively (P˃0.99), udder girth - by 3.9 cm or 11.9% (P˃0.99) and 7.3 cm or 24.8% (P˃0.999). The length of teats in Dorper ewes is greater than in Tsigai ewes by 0.47 cm or 23.1%, and in the Merinolandschaf - by 0.2 cm or 8.7% (P <0.95). Ewes with male lambs in their offspring were more milk-producing than ewes with female lambs. This advantage was in ewes of Tsigai breed 2.2 kg or 9.5% (P≤ 0.95), Merinolandschaf - 2.0 kg or 10.2% (P≥ 0.95), Dorper - 1.5 kg or 7.51% (P≥0.95) During the lactation period of 180 days more milk was obtained from ewes of Tsigai breed than from ewes of the Merinolandschaf breed by 1.8 kg or 16.9% (P≤ 0.95), and from the Dorper breed - by 19.17 kg or 16.9% (P≥ 0.999). Thus, for milk production the most desirable of the studied breeds are Tsigai and Merinolandschaf breeds.

The herbage intake and milk production of strip- and zero-grazed dairy cows

1962 ◽  
Vol 59 (1) ◽  
pp. 95-103 ◽  
Author(s):  
J. F. D. Greenhalgh ◽  
K. V. Runcie
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Energy Cost ◽  
Live Weight ◽  
Fat Content ◽  
Treatment Groups ◽  
Herbage Intake ◽  
Free Grazing ◽  
The Difference ◽  
Friesian Cows

1. A group of four Ayrshire and four Friesian cows was strip grazed on a cocksfoot-dominant sward while a second, similar group was zero grazed on herbage cut from the same field. The experiment consisted of five 10-day periods, two in the spring and three in the summer.2. The intakes of all cows were calculated from values for faeces output, estimated by using chromic oxide, and for herbage digestibility, estimated from faeces nitrogen. The regressions used for predicting digestibility were determined with the zero-grazed cows, digestibility coefficients being calculated from measured intake and estimated faeces output values.3. Over the whole experiment there was no difference between treatments in milk yield, herbage digestibility or intake. The solids-not-fat content of the milk of strip-grazed cows was significantly higher than for zero-grazed cows.4. In both spring and summer the increasing maturity of the herbage caused declines from one period to the next in herbage digestibility and intake, and there were declines also in milk yield and solids-not-fat content. The declines were greater for the zero-grazed cows, apparently because they, unlike the strip-grazed animals, were unable to select the more digestible and palatable components of mature herbage. The effects of selective grazing on digestibility, however, were evidently small, for the difference in between the treatment groups was never greater than one unit.5. The estimated energy intakes of both treatment groups corresponded quite well with their theoretical requirements of energy for maintenance, milk production and live-weight gain, and there was no evidence of the energy cost of free grazing being appreciably greater than that of zero grazing.

scholarly journals RELATIONSHIP OF MILK PRODUCTIVITY OF COWS WITH LIVE WEIGHT AND AGE AT THE FIRST INSEMINATION

2017 ◽  
Vol 54 ◽  
pp. 45-50
Author(s):  
G. D. Ilyashenko
Keyword(s):  
Correlation Analysis ◽  
Milk Production ◽  
Milk Yield ◽  
Milk Fat ◽  
Live Weight ◽  
Milk Productivity ◽  
Fat Yield ◽  
The Difference ◽  
Dairy Breed ◽  
Intensive Growth

The efficiency of the use of cattle of one or another breed is determined both by the level of milk productivity and the ability of the cattle to reproduce. At the same time, the future reproductive capacity, milk yield and duration of economic use to a large extent depends on the live weight and age when heifers insemination. The purpose of research. Study the effect of live weight and age at the first insemination on the milk productivity cows of Ukrainian red dairy breed. Methods. The research was carried out in the breeding plant of the state enterprise "Elite" of the Kirovograd state agricultural research station of NAAS on 697 cows of Ukrainian red dairy breeds, which were found during 2004–2014. Milk productivity of cows and their live weight and age at the first insemination were investigated according to the materials of the primary zootechnical and pedigree records. The degree of connection of live weight and age at the first insemination with milk productivity was estimated by correlation analysis. One-factor dispersion analysis determined the level of influence of the age of the first insemination and live weight on the productivity of cows. The calculations were made using methods of mathematical statistics using the software package "STATISTICA-6.1". Results of research. By the analysis of milk production on experimental cows, determined, that its level depends on the live weight of animals at the first insemination. Therefore, cows with live weight at the first insemination was 420–439 kg, dominated by mercy unique live weight of 380 kg in the first lactation at 244 kg (6242 vs 5998 kg), td = 1,96 for the third – 1069 kg (7465 vs 6396 kg), td = 2,37 by best lactation 498 kg (7916 vs 7418 kg), td = 2,03, significance level for all lactation (P < 0,05). To the milk fat, accordingly, the predominance was 13.2 kg (260,2 vs 247,0 kg), 22,9 (309,5 vs 286,6 kg) and 21,0 kg (325,1 vs 304,1 kg), the difference is close to the true values. The peers with a live weight of 400–419 kg and 440 kg and more also yielded in the first milk yield. The difference the milk I, III and the best lactation was 72 kg, 219 kg and 91 161 kg, 674, 589 kg for milk fat yield 5 kg, 10.3, 6.1 kg and 11.5 kg, 28.8, 19.5 kg, respectively. Due to the lesser number of animals, the vast majority of values did not reach a reliable level. Studies of milk productivity of cows, depending on the age of the first insemination, showed that its cow was the highest, which were counted at the age of 455 days. The lowest rates of dairy productivity were the animals that were fertilized at the age of 606 or more days. Correlation analysis found the highly reliable of feedback age insemination of cows milk yield in the first three lactation (-0,25 ... -0,37). Similar patterns of feedback for somewhat lower correlation coefficients are noted with the release of milk fat (-0,23 ... -0,33). Coherence of live weight at the I insemination and follow-on milk production was significantly lower (compared with age insemination) in absolute value, for only a certain level of first lactation milk yield and milk fat yield (P < 0,05). The significant influence of the investigated factors on milk yield of cows is established. Thus, by milk yield and milk fat and protein for 305 days of lactation cows power of influence age of first insemination exceeded 50%, the fat and protein in milk index of potency is 32 and 30% by high-confidence values for milk yield and yield of milk protein and fat . Somewhat lower than 20 to 33%, the effect of live weight on the first insemination was shown on the performance of cows. Сonclusion. The heifers of the Ukrainian Red dairy breed in conditions of the Central region of Ukraine advisable to fertilize at the age of 455 days, or 14,5–15 months, when they reach the living weight of 420–439 kg. The revealed feedback of the inseminative age and milk productivity can be explained by more intensive growth, better development and economic rapidity of the previously diced heifers and its should lead to intensive rearing of young animals. Determined, that the force of age-old influence of the first insemination on the lactic productivity of the cows exceeds 50%, the live weight reaches from 20 to 33%. Discovered tendency also confirms the expediency of intensive growth of repair heifers.

Performance of Friesian cows with high and low breeding indexes 1. Stall feeding and grazing experiments and performance during the whole lactation

1985 ◽  
Vol 40 (3) ◽  
pp. 379-388 ◽  
Author(s):  
C. Grainger ◽  
A. W. F. Davey ◽  
C. W. Holmes
Keyword(s):  
Milk Production ◽  
Body Condition ◽  
Milk Fat ◽  
Live Weight ◽  
Short Term ◽  
Feeding Experiments ◽  
The Mean ◽  
The Difference ◽  
And Performance ◽  
Friesian Cows

ABSTRACTThe performance of 38 Friesian cows with either high or low breeding indexes was measured during the whole lactation and in short-term experiments where the cows were individually given cut pasture in stalls, or grazed on pasture.Cows with high breeding indexes produced more milk fat than did cows with low breeding indexes in the short-term experiments, and during the whole lactation. There was close agreement between the expected differences (predicted from breeding indexes) and the measured differences in milk fat yield. When fresh cut pasture was given ad libitum in stalls the intake per cow was the same between genotypes. However, when intake was expressed per unit of metabolic weight, the mean pasture drymatter intake of the high breeding index cows was 1·05 of that of the low breeding index cows, but the difference was significant in only one of the four indoor feeding experiments.The difference between genotypes in size was not regarded as significant because the differences in mean live weight at calving (high breeding index – low breeding index) of the animals purchased in the 1st and 2nd years were –28 and 9 kg respectively. During the whole lactation, low breeding index cows gained significantly more live weight and lost significantly less body condition than did the high breeding index cows. No significant differences in live-weight and body-condition changes could be detected during the shorter periods (4 to 5 weeks) of the indoor feeding and grazing experiments.It can be calculated that the higher milk production of the high breeding index cows could be explained partly because they eat more (per unit metabolic live weight) and more importantly because they divert a higher proportion of the food they eat to milk production and a lower proportion to live-weight gain than do the low breeding index cows.

Experiments on the use of home grown foods for milk production: II. The effect of feeding concentrated and bulky foods prior to calving on subsequent milk production

1944 ◽  
Vol 34 (1) ◽  
pp. 27-34 ◽  
Author(s):  
K. L. Blaxter
Keyword(s):  
Milk Production ◽  
Good Condition ◽  
Live Weight ◽  
Fat Percentage ◽  
Additional Food ◽  
Subsequent Performance ◽  
Significant Difference ◽  
Feeding Value ◽  
The Difference ◽  
Effect Of Feeding

1. A field experiment in which six farms cooperated, supplying fifty-one experimental cows and heifers, has been conducted. The object was to find whether feeding before calving 156 lb. of concentrates or its equivalent in feeding value as bulky food increased milk production.2. The results showed that animals fed concentrates gained more weight before calving, were in better condition at calving, and produced a maximum of 7 lb. more milk per cow per day than the controls. Although those fed bulky food increased in live weight more than the controls, they did not calve in such good condition and produced only 3 lb. of milk per cow per day more than the controls.3. Nearly half the animals fed bulky food refused appreciable amounts of this supplement, and it is probable that this refusal of food is one of the factors responsible for the differences in milk production between the two groups receiving additional food.4. The correlation (r) between the weight of the cow and the weight of the calf was +0·507, and there was no statistically significant difference between the weight of the calves produced by cows receiving different treatments.5. Although the fat percentage of the milk of the cows receiving supplementary food was higher than that of the cows receiving no supplement, the difference was not statistically significant.6. Correlation analysis showed that the farmers' judgement of the condition of their cows at calving time was very closely related to the cows' subsequent performance.

scholarly journals Results of using different breed studs in commercial fine wool sheep breeding

2021 ◽  
Vol 262 ◽  
pp. 02016
Author(s):  
Vasily Aboneev ◽  
Dmitry Aboneev ◽  
Ekaterina Aboneeva ◽  
Safarbi Kazanchev ◽  
Dastanbek Baimukanov
Keyword(s):  
Milk Production ◽  
Live Weight ◽  
Sheep Breeding ◽  
Breeding Stock ◽  
The North ◽  
Fertilizing Ability

This work presents the material of research and production experiments on the crossing of stud rams of the North Caucasian meat and wool breed and Australian meat merino with fine wool ewes of a commercial herd. It is identified that the use of North Caucasian rams on fine wool ewes serves to increase the fertilizing ability and milk production of the breeding stock, to increase viability and resistance of young animals, as confirmed by the best morphometrical differences of crossbred offspring placentas. Crossbred offspring from semi-fine wool rams had a large live weight at birth at 21 days and at 4 months of age. The use of Australian producers did not have a significant effect on the above indicators of economically useful traits in comparison with purebred breeding.

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.

Economic selection index in small rural dairy farms

2019 ◽  
Vol 86 (1) ◽  
pp. 25-33
Author(s):  
Marcos Jun-Iti Yokoo ◽  
Leonardo de Oliveira Seno ◽  
Luiza Corrêa Oliveira ◽  
Pedro U N da Costa ◽  
Gustavo M da Silva ◽  
...  
Keyword(s):  
Milk Production ◽  
Selection Criteria ◽  
Production Systems ◽  
Selection Index ◽  
Live Weight ◽  
Productive Performance ◽  
Selection Indices ◽  
The Difference ◽  
Economic Selection ◽  
Bioeconomic Models

AbstractThis study aimed to calculate economic values (EVs) and economic selection indices for milk production systems in small rural properties. The traits 305-d milk yield in kg (MY), fat (FP) and protein (PP) percentage, daily fat (FY) and protein (PY) yield, cow live weight in kg (LW), calving interval (CI), and logarithm of daily somatic cell count (SCC) in milk were considered the goals and selection criteria. The production systems were identified from 29 commercial properties based on the inventory of revenues and costs and of zootechnical field data. Later, bioeconomic models were developed to calculate the productive performance, revenues, and costs concerning milk production to estimate EVs, which were calculated as the difference in annual profit with dairy production resulting from a change in one unit of the trait while keeping the others constant and dividing the value by the number of cows. After the EVs were known, ten economic selection indices were estimated for each system so they could be compared by modifying the selection criteria and calculating the relative importance of each selection criteria, the accuracy of the economic selection index, and response expected to the selection in USD, among other parameters. One of the systems detected was called less intensive (LS) and was characterized by having ten cows in lactation that produced 13·5 l/d and consumed 1·8 kg of concentrate/d. The second system detected was called more intensive (IS) and had 22 cows in lactation that produced 17·5 l/d and consumed 3·4 kg of concentrate/d. Monthly profits per cows in lactation of USD 2·60 and USD 68·77 were recorded for LS and IS, respectively. The EVs of the traits MY, FP, and PP were all positive, while for the other traits they were all negative in all situations. The best economic selection indices were those featuring selection criteria MY, LW, and CI, while the trait LW had the greatest importance in both systems. These results indicate that animal frame must be controlled in order to maximize the system's profit.

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