scholarly journals Reproductive Ability and Milk Production of Ewes with Different Variants of Linear Selection

2021 ◽  
Vol 852 (1) ◽  
pp. 012015
Author(s):  
E N Chernobai ◽  
N A Rezun ◽  
N A Agarkova
Keyword(s):  
Milk Production ◽  
Reproductive Ability ◽  
Linear Selection

scholarly journals PRODUCTIVITY OF COWS OF UKRAINIAN BLACK-AND-WHITE AND RED-AND-WHITE DAIRY BREEDS

2018 ◽  
Vol 51 ◽  
pp. 112-118
Author(s):  
V. V. Machulnyi
Keyword(s):  
Dairy Cattle ◽  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Fat Content ◽  
Reproductive Capacity ◽  
Black And White ◽  
Reproductive Ability ◽  
Service Period ◽  
Dairy Breed

Milk yield of cows in breeding herds, Cherkassy region, for last completed lactation averaged 6442 kg of milk with 3.62 % fat content. Currently the question of interconnection of cows’ milk production and reproductive capacity is especially important, because the significant increase in milk yields makes minimize calves. The successful conduct of breeding had set the goal to detect the best options for combining milk production and reproductive ability of animals.To characterize the level of milk production including reproductive ability of cows we used indicator of daily average milk yield per one day of periods between calving (PBC). The best service period can be considered period of 51-90 days, that allows you to get one calf per cow per year (average PBC is 351 days) and maintain high milk production (6431 ± 39.6 kg during 305 days of lactation). With this service period all indicators of milk production and reproductive ability are at high level. Reduced service period below recommended levels will reduce the duration of lactation and milk production, and increasing service period will increase the duration of lactation with a simultaneous reduction in milk production for 305 days. Herewith deterioration of reproductive ability is marked and manifested in the increase of the insemination index, decline in the reproductive capacity, increase of periods between calving and as a result, reduce of calves and culling barren cows.Analysis of genealogical structure of the studied herds points to low diversity (Ukrainian Black-and-White dairy cows belong to 6 lines and Ukrainian Red-and-White dairy cows – to 8 ones) with high affinity (by Chief 1427381.62 to R. Sovereign 198998 bloodline, by Starbuck 352790.79 to Elevation 1491007 and Ideal1013415 bloodlines).Genealogical structure of the herds is saturated a lot of bulls genealogical groups of Holstein cattle: Chief 1427381 – 11 bulls in the array of Ukrainian Black-and-White dairy breed and 5 ones in Ukrainian Red-and-White dairy breed, Starbuck 352790.79 – 10 sires in the array of Ukrainian Black-and-White dairy cattle and 3 ones in Ukrainian Red-and-White dairy breed, Elevation 1491007.65 – 4 sires in the array of Ukrainian Black-and-White dairy cattle and 3ones in Ukrainian Red-and-White dairy breed.Currently the sires of Chief 1427381.62 (7712-3,76-289,9-3,14-242,1), Starbuck 352790 (7857-3,87-295,4-3,07-241,2), Jocko Besne 694028588.94(6687-3,88-259,5-3,03-202,6), and Bell 1667366 bloodlines (61341-3,95-242,3-3,02-185,2) among sires of Ukrainian Black-and-White dairy cattle and the sires of Cavalier 1620273.72 (7285-3,98-289,9-3,08-224,4), Chief 1427381.62 (7522-3,76-282,8-3,00-225,7),Starbuck 392405 (7667-3,87-296,7-3,00-230,0), and Elevation 1491007.65 bloodlines (7544-3,80-286,7-3,5-230,0) among sires of Ukrainian Red-and-White dairy breed are classified to a highly productive and promising for breeding and wider use by productive qualities.After the first insemination the lowest proportion of fertilized cows is among offspring belonging to Chief 1427381 bloodline which is only 38 % among both breeds. However, the milk yield of breeding stock belonging to this bloodline is 7712 kg with 3.76 % fat content for Ukrainian Black-and-White dairy cows and 7522 kg of milk with 3.76 % fat content for Ukrainian Red-and-White dairy cows. Daughters belonging to Elevation1491007, Valiant 1650414, and Hanover 1629391 bloodlines with yields of 4566-5478 kg of milk per lactation had a part of fertilized cows, after the first insemination, at the level of 41-49 %. Fertilization after the first insemination above 50% was in daughters belonging to Cavalier 1620273.72 (52%), Starbuck 392405(50-55 %), Bell 1667366(56%) and Jocko Besne 694028588.94 bloodlines (64 %). The level of performance of these animals for milk yield ranged from 6134 kg to 7857 kg.Heritability coefficients of milk yield and duration of service period were low (0.118-0.289). A positive correlation can be explained by the fact that extension of service period (to a certain level) leads to growing number of milking days (duration of lactation) and defers a decrease in productivity of cows by physiological reasons, namely as a result of pregnancy. Low rates of heritability indicate little genetic diversity of traits and the significant influence of physiological and environmental factors in their formation.As Ukrainian Black-and-White and Ukrainian Red-and-White dairy breeds have a high proportion of heredity of Holstein breed which has genetically large fetus, there is need to study the characteristics of nature passing calving in cows of these breeds. Itis found the number of first-calf heifers which needed help was 52.4%. Animals calve alone in 47.6 % of all cases. Calving was without complications if the live weight of calves not exceeding 6-7% of mother’s weight. The cows calved without help of staff exceeded by 11.7% of the width of the pelvis in the buttocks, 7.5 % of the width of the ilium, and 7.1 % of its oblique length compared with animals of same age.

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).

scholarly journals The combining ability of poltava meat and welsh pigs breed combination

1970 ◽  
Vol 21 ◽  
pp. 270-273
Author(s):  
O. M. Tsereniuk ◽  
O. V. Akimov ◽  
O. I. Chalyi ◽  
Yu. V. Chereuta
Keyword(s):  
Milk Production ◽  
Combining Ability ◽  
Evaluation Method ◽  
Multiple Pregnancy ◽  
General Combining Ability ◽  
Specific Combining Ability ◽  
Reproductive Ability ◽  
Diallel Crossing ◽  
Reciprocal Crossing ◽  
Positive Effect

Aim. Poltava Meat and Welsh pigs breed reciprocal crossing combination ability study. Methods. The combination ability evaluation method, the method of incomplete diallel crossing. The traditional methods of pigs general and specific combining ability effects estimation. Results. The Rosinka family sows were characterized by positive values of general combining ability, except the prolificacy rate. The Bystra family sows by the multiple pregnancy and milk production indexes had positive values of general combining ability, but by a nest weight at a birth and weaning – negative. For the Vorskla family sows the positive indexes of general combining ability were identified for a nest weight at a birth only, for the rest indexes – the negative value of general combining ability were installed. The Rosinka family sows had the positive value of specific combining ability for all maternal productivity indxes. The Bystra family sows were characterized by positive value of specific combining ability only for a nest weight at a birth and milk production indexes. The Vorskla family sows by the all maternal productivity indexes had negative specific combining values. Conclusions. For complex reproductive ability indexes for various lines and families combinations the highest positive effect of specific combining values was obtained for Rosinka family sows combinations of Poltava meat breed with the Welsh breed boars. Keywords: pigs, Welsh breed, Poltava Meat breed, reproductive ability, combining ability.

ДИНАМИКА КОНЦЕНТРАЦИИ ТРИГЛИЦЕРИДОВ В КРОВИ И БИОХИМИЧЕСКИЙ СТАТУС ПЕРВОТЕЛОК В ПРЕДОТЕЛЬНЫЙ ПЕРИОД И ВТОРОЙ МЕСЯЦ ЛАКТАЦИИ, СВЯЗЬ С РЕПРОДУКЦИЕЙ

2019 ◽  
Author(s):  
V.B. LEJBOVA ◽  
S.V. TIMOFEEVA
Keyword(s):  
Milk Production ◽  
Transition Period ◽  
Reproductive Function ◽  
Sharp Decrease ◽  
Negative Energy ◽  
The Body ◽  
Sharp Drop ◽  
Holstein Breed ◽  
Reproductive Ability ◽  
Service Period

Поступление питательных веществ из корма не покрывает возрастающие потребности организма в переходный период, в результате чего формируется состояние отрицательного энергетического баланса, для компенсации которого используются внутренние резервы организма и, в первую очередь, запасы липидов. Особенно актуальна эта проблема для новотельных первотёлок, испытывающих повышенную потребность в питательных веществах и энергии для завершения собственного роста. В нашей работе была изучена связь биохимического статуса у животных с разной динамикой триглицеридов крови перед первым отелом и на 2й мес лактации и показателями воспроизводства и молочной продуктивности. Объектом исследования служили 14 коров (нетелей) голштинской породы. В сыворотке крови, которую отбирали за 715 дней до и 4552 дня после отела, определяли содержание триглицеридов, холестерина, глюкозы, общего белка, альбумина, мочевины, а также активность ферментов. В конце 2го мес лактации параллельно с отбором проб крови определяли кондиции тела. В качестве показателей репродуктивной способности использовали интервал от отела до первого осеменения и продолжительность сервиспериода, молочную продуктивность оценивали по величине удоя за первые 100 дней лактации. Коровы разделились на 2 группы по интенсивности падения концентрации триглицеридов в крови в изучаемый период. В I группу (n7) вошли животные, у которых содержание триглицеридов резко снизилось с 0,2960,025 до 0,1160,008 ммоль/л. У животных II группы (n7) отмечено плавное снижение концентрации триглицеридов (менее чем в 2 раза). Установлено, что у первотелок с плавным снижением концентрации триглицеридов в крови сервиспериод был короче по сравнению с животными, показавшими резкое падение триглицеридов. При одинаковых условиях кормления и содержания животные обладают разной адаптационной способностью к метаболическим изменениям переходного периода, что обусловливает изменение репродуктивной функции у коров сходной молочной продуктивности.During the transition period, the amount of nutrients obtained from the feed does not cover the needs of the body. As a result, a negative energy balance is formed. To compensate for it, the body uses internal reserves, primarily lipids. This problem is particularly relevant for heifers in need of energy and nutrition to complete growth. The aim of this work was investigation the relationship of biochemical status of cows with different dynamics of blood triglycerides and indicators of reproduction and milk production before the first calving and on the 2nd month of lactation. Iin experience were study 14 cows (heifers) of Holstein breed. Blood for biochemical analysis were collected for 715 days before calving and 45 to 52 days after calving. We estimated concentration of triglycerides, cholesterol, glucose, total protein, albumin, urea, and enzyme activity. Body condition (BCS) was also determined at the end of the 2nd month of lactation. The interval from calving to the first insemination and the duration of the service period were used as indicators of reproductive ability. Milk productivity was estimated by the value of milk yield for the first 100 days of lactation. The cows were divided into 2 groups. 1 group (n7) animals with a sharp decrease of the content of triglycerides from 50,2960,025 to 0,1160,008 mmol/l (G1), 2 group (n8) with a smooth decline of the content of triglycerides (G2). It was found that heifers with a smooth decrease of the triglycerides concentration in the blood (G2) have a short service period compared to animals with a sharp drop in triglycerides (G1). Thus, animals have different adaptive capacity for metabolic changes in the transition period under the same conditions of feeding and maintenance, this fact determines a change in reproductive function in cows with the same milk production.

The effect of the duration of service period on milk production of cows

2018 ◽  
Vol 22 (03) ◽  
pp. 22-25
Author(s):  
Т А Kursakova ◽  
N In Perov ◽  
О V Zaitseva
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Reproductive Ability ◽  
Service Period ◽  
Daily Milk Yield ◽  
Daily Milk

The article presents the changes of reproductive ability of cows depending on their level of milk production. It is concluded that with increasing milk production is the lengthening of service period of cows, which, however, has little effect on average daily milk yield for lately period.

scholarly journals Milk productivity and reproductive ability of ukrainian black-spotted dairy breed cows of different type of constitution

2017 ◽  
Vol 19 (74) ◽  
Author(s):  
Z. Y. Shcherbatyj ◽  
P. V. Bodnar ◽  
Y. G. Kropyvka
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Milk Fat ◽  
Correlation Coefficients ◽  
Fat Content ◽  
Reproductive Capacity ◽  
Reproductive Ability ◽  
Dairy Cattle Breeding ◽  
Constitution Type ◽  
Dairy Breed

The analysis was done on milk production and the reproductive ability of cows of Ukrainian Black-Spotted dairy breed cows of different types of constitution under conditions of breeding farm «Yamnytsya» Tysmenytsya district, Ivano-Frankivsk region. Determining the type of constitution of animals was carried out by mass-metric coefficient, indicator of which were differentiated from its deviation from the arithmetic mean share at 0.43 of sigma (σ), three types of constitution: tight, intermediate and loose. It is established that the milk yield and reproducible ability of cows depended on the type of constitution. For the first, second, third and better lactation the highest milk yield and the amount of milk fat were observed cows of dense type of constitution, and what prevailed animals of intermediate and loose types in 428.0–1318.2 and 11.9–49.2 kg respectively. The largest share of influence of the type constitution on yield and the amount of butterfat in the first lactation (18.51 and 18.42%) and on the fat content in milk for the second and third lactation (10.98 and 17.11%). The correlation coefficients between the type of constitution and milk yield, depending on lactation, were in the range 0.047–0.410, fat content in milk – -0.098– -0.423 and the number of milk fat – -0.032– +0.403. The highest connection between the type of constitution and milk yield milk yield and quantity of milk fat were observed in the first lactation, and in the second, the third and best lactation – between the type of constitution and fat content in milk. Lower age of first calving cows were characterized cows of dense type of constitution, which conceded intermediate and loose type. For the duration of service- and between calving period, the coefficient of reproductive capacity, calves output per 100 cows, index of heifers insemination and firstborn cows, animals of dense type constitution conceded the intermediate and loose types. High and reliable (P < 0.01–0.001) influence of constitution type had on the duration and service-and between-calving period, the coefficient of reproductive capacity, calves output per 100 cows, and index of heifers insemination – within 6.03–7.09%, and the smallest - on the duration of gestation of heifers and firstborn cows – 0.66 and 0.41% respectively. The highest positive and highly probable correlation coefficients were observed between the type of constitution of animals and the duration of their service- and between calving period (0.283 and 0.278) and negative, but probable links – between the type of constitution and coefficient of reproductive capacity (-0.271) and calves output per 100 cows (-0.269). Available communication indicates the possibility and expediency of dairy cattle breeding by mass-metric coefficient, that will promote simultaneous enhancement of their milk production at selection by external-constitutional type.

scholarly journals PRODUCTIVE LONGEVITY OF COWS OF BLACK-MOTLEY BREED, DEPENDING ON THE FIRST INSEMINATION AGE AND LEVEL OF MILK YIELD FOR THE FIRST LACTATION

2017 ◽  
pp. 39-43 ◽  
Author(s):  
Рудишина ◽  
Natal'ya Rudishina ◽  
Штырева ◽  
Irina Shtyreva
Keyword(s):  
Correlation Analysis ◽  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Milk Fat ◽  
Production Level ◽  
Length Of Service ◽  
Reproductive Ability ◽  
Maximum Duration ◽  
Economic Use

The productive longevity of dairy cows are affected by many genetic and paratypic factors. An impact of the heifers age at first insemination and the level of milk production in the first lactation on the duration of economic use. The research carried out on the herd of Ob type cows of black-motley breed of Experimental Farm “Prigorodnoe” of Altai Kray. The indicators of 864 cows, which dropped out of the herd from 2010 to 2015, were analyzed. Maximum duration of economic use in lactation was installed in cows, inseminated at the age till 18 months.(6.1 lactation) and from 18.1 to 20 months (5.8 lactations). Cows, inseminated at the age of 26.1 months and more, were used in the herd least - 3.3 lactation. The highest lifetime of milk yield (32 745 kg) was obtained from cows with the age of the first insemination from 18.1 up to 20 months. A correlation analysis revealed a significant effect on the duration of the economic use of the age of the first fruitful insemination of cows, the month and the level of milking cows in the first lactation. The greater the age of the first ful insemination of cows and milk production level of cows during the first lactation, the less the duration of their economic use (respectively r = - 0.28 in the way of p <0.05 and r = - 0,45, p <0.001). The magnitude of life milking yield of cows significantly affects the duration of the economic uses of in lactation (r = 0,89, p <0.001) and less significantly, but significantly, the highest yield of milk per lactation (r = 0,30, p <0.01). It was found that the lower the milk yield of cows during the first lactation, the greater the duration of their economic use in lactation, lifetime milk yield, milk yield per day of life, the yield of milk fat, less than the length of service- and calving periods and the higher the ratio of reproductive ability.

scholarly journals COW REPRODUCTION FEATURES UNDER THE CONDITIONS OF INDUSTRIAL TECHNOLOGY OF MILK PRODUCTION

2021 ◽  
Vol 250 ◽  
pp. 207-213
Author(s):  
A. A. Velmatov ◽  
◽  
I. M. Dunin ◽  
T. N. Tishkina ◽  
◽  
...  
Keyword(s):  
Milk Production ◽  
Industrial Technology ◽  
Calving Interval ◽  
Dry Period ◽  
Milk Productivity ◽  
The Third ◽  
Reproductive Ability ◽  
Service Period ◽  
Negative Effect

Milk productivity of cows depends on the duration of the service period. Thus, with an increase of the service period from 60 to 121 days after the first calving, milk productivity of cows increases by 937 kg (P≥0.95), after the second calving - by 745 kg and after the third calving - by 926 kg (P≥0.95). Cows with a service period of less than 60 days had the lowest milk productivity of 6751 kg. Cows with a service period of more than 120 days gave 7688-8251 kg of milk. Milk productivity of cows is also influenced by the length of the dry period. Too short, as well as too long dry period has a negative effect on milk productivity. So, cows with a dry period of less than 40 days gave an average of 7011 kg of milk, with an increase of the dry period, milk productivity parameters increase. Cows with a dry period of 41-50 days produced 7465 kg, with a dry period of 51-60 days - 7785 kg, with an increase of the dry period from 61 to 70 days milk productivity increased to 8042 kg, finally, dry period of over 70 days leads to a decrease of milk productivity of cows up to 7211 kg. In terms of the calving interval, the experimental cows corresponded to the parameters of highly productive cows, being within the period of 12-14 months. The analysis of reproductive ability showed that the animals have average values for reproductive ability.

THE GROWTH AND DEVELOPMENT OF HOLSTEIN BREED CALVES DEPENDING ON THE VIABILITY OF BIRTH INDICATORS

2016 ◽  
Vol 1 (4) ◽  
pp. 67-70 ◽  
Author(s):  
Баймишев ◽  
Khamidulla Baymishev
Keyword(s):  
Milk Production ◽  
Production Technology ◽  
Experimental Studies ◽  
Dairy Farm ◽  
Tail Length ◽  
Functional Evaluation ◽  
Holstein Breed ◽  
Reproductive Ability ◽  
Newborn Calves ◽  
Growth Development

The purpose of research is improving quality indicators of Holstein youth in intensive milk production technology. Experimental studies were carried out on dairy farm GUI SU Kupinskiy Bezenchukskaya district of the Samara region. The material for the study were heifers obtained from cows with different mothers continuedtive physiological periods. We have investigated the influence of cows physiological periods duration by morphofunctional parameters of newborn calves – their growth, development and reproductive qualities. The number of newborn calves, obtained from cows with different mothers about the duration of physiological periods, was formed three groups of animals 10 animals in each according to their belonging to the parent group. In newborn calves-governmental morphofunctional assessment on such indicators as the density of hair, the implementation of standing posture, the implementation of sucking reflex, the amount of O-incisor teeth, blood and tail length distance from the calcaneal tuber hock it was held. It was found that the performance of calves viability depends on the duration of periods of physio-logical cows-mothers. Indicators of morphological and functional assessment of calves at birth determine their further growth, development and reproductive ability. To increase reproductive ability of rearing under intensive milk production technology is necessary to optimize the parameters of physiological periods in cows and led to morphological and functional evaluation of calves at birth.

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