scholarly journals Türkiye’de Yetiştirilen Holştayn İneklerde Döl Verim Özelliklerine Ait Fenotipik ve Genotipik Parametre Tahminleri

2017 ◽  
Vol 5 (12) ◽  
pp. 1476
Author(s):  
Ahmet Derviş Sarar ◽  
İbrahim Tapkı
Keyword(s):  
Reproductive Traits ◽  
Interval Number ◽  
Calving Interval ◽  
Reproductive Parameters ◽  
State Farm ◽  
Service Period ◽  
Holstein Friesian ◽  
Friesian Cows ◽  
Estimated Heritability

In this study, reproductive parameters of Holstein Friesian cows raised at Koçaş State Farm were investigated. Average, first breeding age, first calving age, calving interval, number of insemination per gestation and service period were found as, 529,66, 849,59, 378,61 d, 1,92 times and 105,67 d respectively. Also, estimated heritability values of same traits were as 0,30, 0,20, 0,02, 0,09 and 0,11 respectively. The effects of year, season and lactation number on services insemination per pregnancy; the effects of year on calving interval and first breeding age were found significantly. In conclusion, data of reproductive traits of Holstein Friesian cows in raised Koçaş State Farm herd were determined well condition and the estimated phenotypic and genotypic parameters are within reasonable limits.

scholarly journals An analysis of CYP19, CYP21 and ER genotypes in Polish Holstein-Friesian cows with regard to the selected reproductive traits

2011 ◽  
Vol 80 (1) ◽  
pp. 65-71 ◽  
Author(s):  
Iwona Szatkowska ◽  
Wilhelm Grzesiak ◽  
Magdalena Jędrzejczak ◽  
Andrzej Dybus ◽  
Daniel Zaborski ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Reproductive Traits ◽  
Calving Interval ◽  
High Frequencies ◽  
The Third ◽  
Holstein Friesian ◽  
Polymorphic Variants ◽  
Friesian Cows

The aim of this study was to relate polymorphic variants of CYP19, CYP21 and ER1 genes to reproductive traits in 472 Polish Holstein-Friesian cows. High frequencies of one of the homozygous genotypes were found. The ER1/SnaBIAA homozygotes were not identified. In the first and third lactation, an average calving-to-conception interval (CLVC) in cows of ER1/SnaBIGG genotype was significantly shorter (P ≤ 0.05) than in heterozygous cows. In the cows of ER1/BglIGG genotype, significantly shorter CLVC (P ≤ 0.05) was observed compared to heterozygotes in the first lactation, whereas in the third lactation, CLVC in homozygous cows was significantly longer (P ≤ 0.05) than in heterozygous ones. It was also found that homozygous cows were characterized by significantly longer calving interval (CLVI; P ≤ 0.05) compared to heterozygotes in the third lactation. Longer CLVCs in CYP19AA cows were found, compared to heterozygotes, and this difference was significant in the first and third lactation (P ≤ 0.05). Similarly, the average CLVIs were longer in CYP19AA homozygotes than in heterozygous cows; however, significance was proven only in the third lactation (P ≤ 0.05). Description of the molecular mechanisms regulating reproduction, and thus identification of the individuals of genotypes with optimal potential may facilitate the employment of selected reproductive model by a breeder.

scholarly journals The comparison of dairy performance and some reproductive parameters of holstein cows imported from Sweden and their Polish age mates

2007 ◽  
Vol 55 (1) ◽  
pp. 39-44
Author(s):  
Ewa Czerniawska-Piątkowska ◽  
Maciej Szewczuk ◽  
H. Kamieniecki ◽  
M. Adamski ◽  
A. Bruś ◽  
...  
Keyword(s):  
Protein Content ◽  
Milk Fat ◽  
Physiological Condition ◽  
Fat Content ◽  
Calving Interval ◽  
Corn Meal ◽  
Reproductive Parameters ◽  
Genetic Potential ◽  
Holstein Friesian ◽  
Beet Pulp

The general aim of the present work was to compare dairy performance and some reproductive parameters of Holstein-Friesian (HF) cows imported from Sweden as an in-calf heifers, and their age mates in Poland. The animals were kept freely on the deep litter on the farm owned by Agro-company “Witkowo” and feeding was based on TMR (total mixed ration) system during whole year. All ration’s ingredients (bulky feed, concentrate, miscellaneous additives) were mixed and fed as all-mash. The feed ration depended from the physiological condition of a cow and it was composed of corn and grass ensilage, mash concentrate, crushed corn meal, brewer’s grains and beet pulp.Cows imported from Sweden as in-calf heifers obtained higher milk, fat and protein yield in both lactations comparing to home cows. Significant statistical differences were observed for kg of milk, kg of protein, for FCM (P<0.01) and for kg of fat (P<0.05) in 2nd lactation. Fat and protein content in milk was in average higher for home cows (P<0.01). Big differences (P<0.01) were observed in SBT (proportion of protein to fat content) and RTB (difference between concentration of fat and protein) at imported cows in 2nd lactation. As far as reproduction parameters (gestation interval, calving interval, insemination index) are concerned was cows from Sweden better too. Heifers from Sweden calved earlier. The usage of high genetic potential of imported cows is possible only with providing them optimum living conditions suitable to their needs.

scholarly journals The role of type traits of dairy cattles in long productive life

2006 ◽  
pp. 11-18
Author(s):  
Attila Berta ◽  
Béla Béri
Keyword(s):  
Life Time ◽  
Body Depth ◽  
Respiratory Problems ◽  
Service Period ◽  
Holstein Friesian ◽  
Reproduction Biology ◽  
Significant Difference ◽  
Type Traits ◽  
Friesian Cows

In the last few decades, a new intensive milking stock has developed as a result of breed-converter crossing in Hungary. Additionally, the reproduction biology of the population was adversely affected by keeping and feeding technologies. Productive lifetime has shortened and the service period has lengthened. However, profitable milk production requires cows with longer productive lives and larger life-time productions. In our study, we made a comparison between production, culling causes, and type traits of culled Holstein Friesian cows after first calving and of cows with a minimum of eight lactations. We established that the first lactation production of cows with longer productive lives was more or less homogeneous. Disease of metabolism as well as digestive and respiratory problems, were the main causes of the culling of cows with short productive lives, and reproduction and udder problems as well as low production, were the main causes of the culling of cows with long productive lives. We found a significant difference in the distributions of strength, body depth, dairy form, croup width, rear leg side view, foot angle, fore udder attachment and teat placement between the two groups. Furthermore, we established that cows with lower stature, less strength, a somewhat deeper body, better dairy form, narrower croup width, smaller foot angle, looser fore udder attachment and some outside teat placement had longer productive lives.

scholarly journals The relationships between the somatic cell counts in the milk and the fertility of Polish Holstein-Friesian cows

2019 ◽  
Vol 64 (No. 10) ◽  
pp. 433-439
Author(s):  
K Siatka ◽  
A Sawa ◽  
M Bogucki ◽  
D Piwczynski ◽  
S Krezel-Czopek
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Somatic Cell Count ◽  
Production Level ◽  
Udder Health ◽  
Natural Logarithm ◽  
Cell Counts ◽  
Service Period ◽  
Holstein Friesian ◽  
Friesian Cows

The aim of the study was to analyse the relationship between the somatic cell counts in the milk (the udder health status indicator) and the cow’s fertility, taking the influence of the selected factors into account. The udder health status was determined based on the somatic cell count of the milk from 88 745 test-day records from 55 685 Polish Holstein-Friesian cows. The test-day measurements were made up to 30 days before the first insemination, during the period up to 180 days of the first and second lactation. Because the somatic cell count showed high variation and is not normally distributed, the data were transformed to the natural logarithm scale. Based on the results of the statistical analysis, it was shown that with the increase in the number of somatic cells in the milk, the calving intervals were extended by 11 days (P ≤ 0.01), the service period by around 4 days (P ≤ 0.05), the increase in the services per conception by 0.11 (P ≤ 0.01). There was a statistically significant correlation, weak on the Guilford scale, between the natural logarithm of the somatic cell count and the fertility of the cows: the calving interval – CI (r = 0.050**, P ≤ 0.01), service period – SP (r = 0.016**) end services per conception – SPC (r = 0.019**). Monitoring the number of somatic cells in the milk could contribute to improving the fertility of the cows in particular: in the second lactation in the double lactation (for the CI (r = 0.059**)); in herds with a production level of 7000–9000 kg of milk (for the CI (r = 0.055**), the SP (r = 0.022**) and the SPC (r = 0.024**)); the daily productivity of &gt; 40 kg (for the CI (r = 0.052**), the SP (r = 0.033**) and the SPC (r = 0.029**)), the number of cows in the herd of &gt; 200 (for the CI (r = 0.061**), the SP (r = 0.034**) and the SPC (r = 0.033**)), in the autumn season of the first insemination (for the CI (r = 0.072**), the SP (r = 0.027**) and the SPC (r = 0.031**)). The magnitude of these correlations varied within the classes of the factors such as the daily production level, the age of cows´ lactation number, the season of the first insemination, the herd production level, and the herd size. It appears that the somatic cell count results obtained from the periodic milk recording, considered as an indirect measure of the udder health and used when deciding on the mastitis treatment, could be a useful tool for controlling the fertility in the cows.

Genetic analysis of fertility traits in Jersey crossbred cows

2017 ◽  
Author(s):  
Anshuman Kumar ◽  
Ajoy Mandal ◽  
A. Gupta ◽  
M. Karunakaran ◽  
S. Das ◽  
...  
Keyword(s):  
Management Practices ◽  
Genetic Relationships ◽  
Random Effect ◽  
Reproductive Traits ◽  
Calving Interval ◽  
Genetic Progress ◽  
Factors Affecting ◽  
Service Period ◽  
Parity Number ◽  
Fertility Traits

The present study was carried out to evaluate the genetic and non-genetic factors affecting fertility traits viz., number of service per conception (NSPC), service period (SP) and calving interval (CI) and genetic and phenotypic parameters of these traits in Jersey crossbred cattle, maintained at Eastern Regional Station of ICAR-National Dairy Research Institute, Kalyani, West Bengal over a period of 39 years (1976-2014). The least squares means for the NSPC, SP and CI were 1.73±0.08 inseminations, 156.37±7.47 days and 458.32±9.56 days respectively. The study revealed that all the traits were decreasing significantly with parity number. Season was important in determining service period, whereas period of calving influenced calving interval in this study. NSPC, SP and CI did not differ significantly among different genetic groups; but, half-breds of Jersey and Tharparkar (½ Jersey-½ Tharparkar) showed comparatively lower NSPC, SP and CI than half-breds of Jersey and Red Sindhi and other crosses in this study. The random effect of sire was highly significant on all the fertility traits considered in this study. Heritability estimates for NSPC, SP and CI were 0.08±0.06, 0.18±0.08 and 0.16±0.08 respectively. All the three analyzed traits had close genetic relationships. Low to moderate heritability of reproductive traits indicates slow genetic progress through selection and further improvement in reproductive performance can be made either by better management practices or including large number of polymorphic markers associated with fertility in the population to assist animal selection

scholarly journals Influence of GnRH-gonadoreline and prostaglandine F2α-dinoprost application on reproduction parameter values in dairy cows with puerperal endometritis

2009 ◽  
Vol 63 (5-6) ◽  
pp. 269-283
Author(s):  
Mustafa Sabanovic ◽  
Nevres Paprikic ◽  
Ahmet Suljkanovic ◽  
Jako Miljas ◽  
Miodrag Lazarevic
Keyword(s):  
Dairy Cows ◽  
Post Partum ◽  
Hormonal Treatment ◽  
Conception Rate ◽  
Reproductive Parameters ◽  
Control Groups ◽  
Holstein Friesian ◽  
Parameter Values ◽  
Friesian Cows

This paper presents results of investigations of gonadoreline application (14-16, 17-20 and 21-25 days post partum) influence, followed by prostaglanin F2 ? ten days later, on the reproductive parameters of dairy cows with difficult calving and endometritis. The study was carried out on a total of 92 Holstein-Friesian cows. Fifty of them treated with hormones, while 42 animals served as controls, receiving placebo injections. Analysis of the results in cows with postpartal endometrits revealed that mean anoestrus period, open days period and intervals between calving were significantly lower in cows that underwent hormonal treatment, when compared to the controls. The period from gonadoreline application, followed by prostaglandin injection, to conception was shorter by 44, 28 and 14 days respectively when compared to the control groups. The total conception rate from the first three artificial inseminations was higher in the experimental groups in comparison to the controls. .

scholarly journals Correlation between body condition change and reproduction parameters of Holstein-Frisian cows after calving

2010 ◽  
pp. 49-52
Author(s):  
Edit M. J. Jónás ◽  
Imre Mucsi ◽  
István Komlósi
Keyword(s):  
Body Condition ◽  
Dairy Farms ◽  
The Body ◽  
Professional Literature ◽  
Condition Change ◽  
Service Period ◽  
Holstein Friesian ◽  
Plain Region ◽  
Service Rates ◽  
Friesian Cows

The authors examined the body condition with relation to reproduction of Holstein-Friesian cows on three dairy farms in the South Plain region. During the examination they analyzed the data of 516 births of 494 Holstein-Friesian cows. They were trying to find correlation between the first service, the service period and the service rates. The examinations with regard to the correlations were different from the ones published in the professional literature. The body condition at the time of calving affected the interval from calving to the first service but not the conceptionrates or the service period. The examinations did not prove any correlations between body condition changes and reproduction.

scholarly journals Genetic evaluation of milking buffaloes (Bubalus bubalis): bull ranking

2019 ◽  
Vol 71 (5) ◽  
pp. 1712-1718 ◽  
Author(s):  
L.C. Marques ◽  
C. McManus ◽  
V. Peripolli ◽  
C.V. Araújo ◽  
A.S. Matos ◽  
...  
Keyword(s):  
Genetic Correlations ◽  
Reproductive Traits ◽  
Bubalus Bubalis ◽  
The Other ◽  
Reproductive Efficiency ◽  
Calving Interval ◽  
Genetic Management ◽  
Service Period ◽  
Total Milk ◽  
Birth Records

ABSTRACT The objective of this study was to evaluate genetic aspects related to production and reproductive efficiency of Murrah and Mediterranean buffaloes and their crosses. A ranking of bulls from Embrapa Eastern Amazonia was also composed to guide assisted mating. Birth records of 2,322 Murrah, Mediterranean, and crossbred buffaloes from the Embrapa Eastern Amazon herd, from 1953 to 2013, as well as information on production and reproductive traits were used. Genetic analyzes were performed in the WOMBAT software using the animal model with two-trait analysis. While heritability (h2) for total milk production (TMP) and fat milk percentage (F) were generally high, for reproductive traits h2 tended to be low. Genetic correlations for TMP with the other traits were low and negative, except for TMP with calving interval (CI) and service period (SP) in the Mediterranean breed and with age at first calving (AFC) and SP in crossbred, which were positive and high. Bull 1001 had high predicted transmitting ability (PTA) for TMP, so it should transmit a greater volume of milk to his offspring, although it had a lower PTA for F. There was sufficient variability within the herd to work with genetic management for both production and reproductive efficiency.

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