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Changes over time in genetic parameters for growth in bulls and assessment of suitability of test methods
gain genetic analysis progeny test
2015/7/3
Objectives of the study were to examine alternative measures of growth potential of bulls in testing stations, determine whether genetic parameter estimates of such traits changed over time, and exami...
Growth and carcass performance of bull calves born from Hereford, Simmental and Charolais cows sired by Charolais bulls
beef bull calves crossbreds body weight
2015/6/8
The analysis comprised purebred Charolais bull calves (CH) and crossbred bull calves born from Hereford (CH × HE) and Simmental (CH × SI) cows. Body weights and daily gains were measured in subsequent...
The evaluation of growth and selected carcass and meat quality parameters in fattening bulls fed a diet based on concentrates or maize silage
Czech-Pied bulls high-grain diet weight gain carcass weight m. longissimus
2015/6/5
The aim of the study was to evaluate the growth rate and selected carcass and meat quality parameters in bulls fed a high-grain diet and to compare the results with those obtained in bulls fed a diet ...
Trajectory of body weight of performance tested dual-purpose bulls
cattle random regression heritability genetic correlation growth curve linear spline
2015/6/4
6 508 bulls of dual-purpose cattle at performance-test stations were weighed at intervals of 30 days from birth to 420 days. After all editing a total of 74 558 weight records were available. Live wei...
Effect of breed on growth performance and carcass composition of Aberdeen Angus, Charolais,Herefordand Simmental bulls
beef cattle bulls breeds growth carcass composition
2015/6/2
Breed effects on live weight gain, slaughter characteristics and carcass composition were compared in Aberdeen Angus, Charolais, Hereford and Simmental bulls. The experiment extended over 2 years and ...
Carcass and meat quality in Brown fattened young bulls: effect of rearing method and slaughter weight
Brown cattle carcass composition meat colour sensory evaluation
2015/6/2
Three groups of Brown fattened young bulls were studied, comparing the effects of rearing method (suckled vs. bucket reared) and of slaughter weight (400 vs. 480 kg). Suckled animals had higher fatnes...
Selection index for bulls of Holstein cattle in the Czech Republic
selection index Holstein cattle bulls
2015/6/1
Complex selection indexes are proposed for bulls of Holstein cattle in the Czech Republic. Partial breeding values for milk performance, fertility and body conformation are combined in the index. Conf...
In the study focused on the estimation of the efficiency of beef cattle in the conditions of the Czech Republic, 361 half-carcasses of the offspring of crossbred bulls of tested young beef sires were ...
The relationship between lysosomal proteolytic enzyme activities involved in skeletal muscle proteolysis of the longissimus lumborum et thoracis muscle (MLLT) of bulls was described. Samples from the ...
Carcass Composition and Cuts of Bulls and Steers Fed with Three Concentrate Levels in the Diets
Concentrate Level Edible Portion Meat Production Sexual Groups
2016/5/18
In this paper, weight, carcass dressing, weights of the primary cuts, weights of the physical components of the primary cuts, and weights of the main commercial cuts of 66 Purunã animals, of whic...
Chemical and Fatty Acid Composition of Longissimus Muscle of Crossbred Bulls Finished in Feedlot
Cattle Crossbreeding Fatty Acids Meat Quality
2016/4/29
This work was carried out to study the chemical and fatty acid composition of Longissimus muscle (LM) of crossbred young bulls finished in a feedlot. After weaning (at 8 months old), the bulls were ke...
Chemical Composition and Fatty Acid Profile in Crossbred (Bos taurus vs. Bos indicus) Young Bulls Finished in a Feedlot
Cholesterol CLA PUFA Purun
2016/4/29
This study was conducted to determine the effect of breed on the chemical composition of first (PUR1) and second (PUR2) generations of Purun찾 young bulls, and to compare both generations with d...
Semen Quality and Behavior of Holstein Bulls Exposed to Estradiol-Treated Bulls for Mounts
bulls sexual behavior sperm output estrogenized mounts
2008/8/7
The objectives were to test the effects of estradiol treatment of teaser bull mounts on sexual behavior and on quality and quantity of sperm obtained from sires managed as in large commercial AI breed...
Ruminal Characteristics, Blood pH, Blood Urea Nitrogen and Nitrogen Balance in Nili-ravi Buffalo (Bubalus bubalis) Bulls Fed Diets Containing Various Levels of Ruminally Degradable Protein
Buffalo Bull Ruminal Characteristics BUN RDP Blood pH N Balance
2016/4/27
Four ruminally cannulated Nili-ravi buffalo bulls were used in a 4?? Latin Square design to determine the influence of varying levels of ruminally degradable protein (RDP) on ruminal characteristics, ...
Effect of intensive fattening of bulls based on a high-grain diet on growth intensity and biochemical and acid-base parameters of blood
bulls fattening high-grain diet weight gain acid-base balance
2015/6/1
The present study deals with the use of high-grain diets with a low proportion of fodder for fattened cattle, and with the evaluation of their effect on the growth intensity and metabolic profile of t...