scholarly journals Insulin responses to acute glucose infusions in Busa and Holstein-Friesian cattle breed during the peripartum period: Comparative study

2013 ◽  
Vol 63 (4) ◽  
pp. 373-384 ◽  
Author(s):  
R. Prodanovic ◽  
Danijela Kirovski ◽  
I. Vujanac ◽  
M. Djuric ◽  
G. Koricanac ◽  
...  
2011 ◽  
Vol 27 (3) ◽  
pp. 1051-1058
Author(s):  
S. Trivunovic ◽  
D. Ivanovic ◽  
D. Kucevic ◽  
V. Pantelic ◽  
J. Korora ◽  
...  

For today?s trends in contemporary production of milk and meat, selection only for production traits is completely unacceptable, since it can contribute to numerous metabolic disorders and shortening of the production life of the animal. Contemporary breeding goals and programs are directed towards, first of all, reaching and maintaining of the optimal balance between production and functional traits without compromising the health and ethological characteristics of animals. Regardless of the breeding objective, i.e. defined program, fertility traits and fitness properties, that is the properties relating to resistance to diseases, must be included. In many countries, problems with calving difficulties and increase of mortality rate of calves in Black and White breeds occurred with the increase of share of Holstein genes in the population of Friesian cattle. Objective of this study is to present the data on number of difficult parities (calving) and number of still born claves (still births) in population of Holstein-Friesian cows in Vojvodina, and to calculate and present genetic parameters for mentioned traits. In this study, data was used on the incidence of difficult calving and number of still born claves (still births) obtained from the calving register for all producers included in the animal control program, carried out by the Faculty of Agriculture from Novi Sad, Animal Science Department, as Main breeding organization for Holstein-Friesian cattle population in Vojvodina. Data refer to years 2008 and 2009, with total of 35000 calvings. Based on calculated parameters, factors were defined which influence the expression of mentioned traits, with major impact on the economical efficiency of the milk production. It is expected that, in spite of low heritability level of 0.149 for dystocia and 0.160 for number of stillbirths, by applying the accurate methods of their genetic assessment, studied traits can be included in the breeding goals of Holstein-Friesian cattle breed in Vojvodina.


2021 ◽  
Vol 5 (1) ◽  
pp. 1-9
Author(s):  
Omar Mardenli ◽  
Mahdi Saleh Mohammad Alkerwi ◽  
Hadi Awad Hassooni

Many of the reproductive traits in cows are affected by a group of factors, the most important of which are climatic conditions and the management of the herds. In this paper, the reproductive status of imported Holstein - Friesian cattle breed was evaluated in terms of breeding through the investigation for some traits under the influence of some factors. The records involved cow birth to first service trait (CBFS) (1101 records), cow birth to first days open trait (CBFDO) (1091 record), and age at first calving trait (AFC) (1083 record). The results of the study showed significant differences in CBFS, CBFDO, and AFC traits according to the year and season of birth (p <0.01), the lowest values were 19.33, 21.29 and 30.29 months (the year 2000) and 19.40,21.30 and 30.32 months (winter) respectively. Also. a significant difference (p <0.01) was noticed through the interaction between the year and season of birth and between the year of birth and total milk yield level (TMYL). Estimated heritability(h2) for CBFS, CBFDO, and AFC traits were 0.22,0.25 and 0.17 respectively. The study showed variation in estimated breeding values (EBVS) across sires within the reproductive traits. The first three lowest values were achieved by the sires 13,25 and 20, the values were -1.97, -1.87 and -1.86 months (CBFS trait), -2.33, -2.21 and -2.19 months (CBFDO trait), -2.32, -2.20 and -2.18 months (AFC trait) respectively. Based on current given results, it is advised to direct and intensify births during winter and spring seasons to obtain optimal reproductive performance of the herd later.


2021 ◽  
Vol 185 ◽  
pp. 106133
Author(s):  
William Andrew ◽  
Jing Gao ◽  
Siobhan Mullan ◽  
Neill Campbell ◽  
Andrew W. Dowsey ◽  
...  

2007 ◽  
Vol 2007 ◽  
pp. 110-110
Author(s):  
R.M. Kirkland ◽  
D.C. Patterson ◽  
B.W. Moss ◽  
T.W.J. Keady ◽  
R.W.J. Steen

Any evaluation of breeds or production systems for beef must consider effects on production, carcass and meat quality characteristics. Holstein-Friesian (HF) cattle are bred for dairy traits only, while Norwegian dairy cattle (NOR) have been selected with some emphasis on beef characteristics. A comparison of production data from bulls of these two breeds has been presented previously (Kirkland et al., 2005). The objective of the present study was to evaluate specific carcass and meat quality parameters of HF and NOR bulls.


2020 ◽  
Vol 56 (3) ◽  
pp. 333-338
Author(s):  
P. Sablik ◽  
A. Klenowicz ◽  
M. Szewczuk ◽  
A. Olszewski ◽  
A. Dybus

2007 ◽  
Vol 40 (3) ◽  
pp. 169-173 ◽  
Author(s):  
Amir H. Shahmoradi ◽  
Reza Arefpajohi ◽  
Keyvan Tadayon ◽  
Nader Mosavari

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