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Effects of dietary protein level on growth performance and nitrogen excretion of dairy heifers
Heifers Growth Performance Protein Nitrogen Excretion
2017/3/9
Protein supplementation is costly and can result in excess nitrogen (N) excretion. The objective of this study was to evaluate the effects of feeding different levels of dietary protein on average dai...
Effect of insemination-related factors on pregnancy rate using sexed semen in Holstein heifers
Holstein sex-sorted semen estrus sperm quality intracornual insemination fertility
2016/12/20
The objectives were to determine the effects of insemination with sexed semen at spontaneous and induced estrus, fixed-time insemination at synchronized estrus, the deposition site, estrous intensity,...
Effects of Different Cutting Height on Nutritional Quality of Whole Crop Barley Silage and Feed Value on Hanwoo Heifers
Aerobic Stability Barley Silage Cutting Height Digestibility Hanwoo Heifer
2016/11/10
The present study evaluated the effects of different cutting height on nutritive value, fermentation quality, in vitro and in vivo digestibility of whole crop barley silage. Whole crop barley forage (...
A high incidence of leukocyte chimerism (60,XX/60,XY) in single born heifers culled due to underdevelopment of internal reproductive tracts
cattle disorders of sex development freemartinism
2015/7/2
Freemartinism, a primary disorder of sex development (DSD) in cattle, is associated with leukocyte chimerism (60,XX/60,XY). The diagnosis of DSD is easy if it is known that a heifer with abnormally de...
Association of insulin-like growth factor I gene polymorphisms (IGF1/TasI and IGF1/SnaBI) with the growth and subsequent milk yield of Polish Holstein-Friesian heifers
cattle body weight insulin-like growth factors milk performance
2015/6/24
The aim of this study was to estimate potential relationships between insulin-like growth factor I gene polymorphisms (IGF1/TasI and IGF1/SnaBI) and the growth parameters of calves as well as their su...
Fattening heifers on continuous pasture in mountainous regions–implications for productivity and meat quality
beef cattle Alpine pasture daily gain product quality fatty acid
2015/6/24
Economical and ecological issues as well as consumer demand for sustainably produced agricultural food rise the trends to fatten beef cattle on pasture during the grazing season. However, particularly...
Growth performance, carcass traits and meat quality of bulls and heifers slaughtered at different ages
meat quality Growth performance
2015/6/23
Older animals were generally fatter and their carcasses contained lower proportions of high-priced meat (P <
0.01) and bones (P < 0.05). Bulls exhibited lower contents of dry matter (P < 0...
Superovulation following follicular synchronization with GnRH at random stages of the oestrous cycle in heifers
oestrous cycle GnRH superstimulation follicular puncture heifer
2015/6/9
The objective of this study was to develop a superovulatory program based on synchronization of follicular waves with GnRH which could be applied regardless of the stage of the oestrous cycle. 36 heif...
Superovulation following follicular synchronization with GnRH at random stages of the oestrous cycle in heifers: oocyte competence and in vitro embryo production
heifer oocyte GnRH oocyte competence
2015/6/8
The objective of this study was to develop a superovulatory program based on the synchronization of follicular waves with GnRH which could be applied regardless of the stage of the oestrous cycle. In ...
A comparison of the follicular dynamics in heifers of the Czech Fleckvieh and Holstein breeds
cattle oestrous cycle bovine ovary ovarian follicular wave repeatability
2015/6/8
Differences in follicular development and repeatability of follicular growth pattern among Czech Fleckvieh (n = 20) and Holstein (n = 23) heifers were investigated. Follicular dynamics was evaluated b...
The effect of growth and development intensity in replacement heifers on economically important traits of Holstein cattle in the Czech Republic
Heifer intensity of growth and development average daily live weight gain milk yield reproduction Holstein cattle
2015/6/4
The objective of the study was to determine the effect of growth and development intensity in Holstein replacement heifers on economically important animal traits. The intensity of growth was assessed...
The association between the somatic cell count and isolated microorganisms during subclinical mastitis in heifers in Jordan
subclinical mastitis (SCM) somatic cell count
2015/5/25
All isolates except for the CNS group exhibited strongly elevated SCC
(> 1 × 106
cells/ml). However, the coagulase-negative Staphylococci did not have a distinct pattern with respect
to SCCs. The...
The association between the somatic cell count and isolated microorganisms during subclinical mastitis in heifers in Jordan
subclinical mastitis (SCM) somatic cell count (SCC) heifers aetiology prevalence Jordan
2015/4/30
Mastitis is an important cause of early culling of dairy heifers. The aims of this study were to identify microorganisms that cause subclinical mastitis (SCM) in Holstein heifers in northern Jordan, t...
Intrafollicular LH administration in dairy heifers treated with a GnRH agonist
intrafollicular treatment double channel system luteinising hormone deslorelin cattle
2015/4/17
The aim of this study was to evaluate the effect of intrafollicular treatment (IFT) with different doses of luteinising hormone. Experimental heifers were treated with a single deslorelin implant to d...
Effects of Border disease virus (genotype 3) naturally transmitted by persistently infected sheep to pregnant heifers and their progeny
Border disease virus abortion sheep
2015/4/8
Eight heifers pregnant between days 47 and 73 were kept together with nine healthy persistently Border disease virus (BDV)-infected sheep allowing natural contact comparable to field conditions. All h...