搜索结果: 1-15 共查到“动物学 Cows”相关记录74条 . 查询时间(0.062 秒)
Supplementation of Dairy Cows with Docosahexaenoic Acid Did Not Affect Ovarian Activity
algae follicle corpus luteum oestrus oestradiol progesterone milk DHA
2018/3/5
Vlcek M., Andrlikova M., Barbato O., Bina V., Boland M.P., Dolezel R., Lopatarova M., Cech S. (2017):
Supplementation of dairy cows with docosahexaenoic acid did not affect ovarian activity. Czech J....
Effects of Supplemental Levels of Saccharomyces cerevisiae Fermentation Product on Lactation Performance in Dairy Cows under Heat Stress
Heat Stress Saccharomyces cerevisiae Lactation Performance Dairy Cow
2016/7/27
The objectives of this study were to evaluate the effects of different supplemental levels of Saccharomyces cerevisiae fermentation product (SCFP; Original XP; Diamond V) on lactation performance in H...
Factors in Dry Period Associated with Intramammary Infection and Subsequent Clinical Mastitis in Early Postpartum Cows
Dry Period Clinical Mastitis Intramammary Infection
2016/5/20
The objective of this study was to determine cow characteristics and farm management factors during the dry period associated with early postparturient intramammary infection (IMI) and subsequent clin...
Urinary Catecholamine and Cortisol Responses of Japanese Shorthorn Cows to Social Isolation
Urinary Cortisol Urinary Catecholamines Social Isolation
2016/5/3
This study was performed to investigate the use of urinary catecholamines to monitor changes in the activity of the sympathetic nervous system and to determine the relationship of urinary cortisol and...
Effects of Non-ionic Surfactants on Enzyme Distributions of Rumen Contents, Anaerobic Growth of Rumen Microbes, Rumen Fermentation Characteristics and Performances of Lactating Cows
Non-ionic Surfactants Enzyme Activity Microbial Growth Rumen Microorganism Ruminal Fermentation Lactation Performances
2016/4/12
A series of experiments was carried out to determine the possibility for the non-ionic surfactant (NIS) as a feed additive for ruminant animals. The effect of the NIS on (1) the enzyme distribution in...
Performance and behaviour at milking after relocation and housing change of dairy cows
cattle barn change milking system milk yield behavioural reaction preference
2015/6/24
The hypothesis that relocation of cows with a housing change temporarily decreases their milk production and affects cows’ behaviour in the milking parlour has been proved. Forty-one Holstein cows on ...
Immunohistochemical localization of adhesion molecules (CD62 and CD18) in the mammary gland of dairy cows
cattle L-selectin β2-integrin mastitis
2015/6/4
Localization of the L-selectin (CD62L) and β2-integrin (CD18) bearing cells in different tissues of the bovine mammary gland was examined. Five dairy cows of Holstein-Friesian breed in the middle of t...
The relationship between somatic cell count, milk production and six linearly scored type traits in Holstein cows
cattle linear evaluation of type traits somatic cell count milk production
2015/6/4
Test-day records of somatic cell count (SCC), milk yield, fat and protein content and six linearly scored type traits (fore udder attachment, udder depth, central ligament, rear udder height, front te...
Effect of the application of bioplexes of zinc, copper and manganese on milk quality and composition of milk and colostrum and some indices of the blood metabolic profile of cows
dairy cows bioplexes of zinc copper and manganese colostrum milk blood
2015/6/4
The object of an experiment was inorganic and organic forms of zinc, copper and manganese applied in mineral mixtures to dairy cows. The experiment was carried out on 90 cows with average milk yield f...
Responses to Starch Infusion on Milk Synthesis in Low Yield Lactating Dairy Cows
Metabolic Parameter mRNA Abundance Glucose Tolerance Test Dairy Cows
2016/5/18
The effect of starch infusion on production, metabolic parameters and relative mRNA abundance was investigated in low yield lactating cows from 86 days in milk. Six Holstein cows fitted with permanent...
Genetic Parameters for Linear Type Traits and Milk, Fat, and Protein Production in Holstein Cows in Brazil
Dairy Cattle Functional Trait Genetic Correlation Heritability Selection
2016/5/18
The objective of this study was to estimate genetic and phenotypic parameters for linear type traits, as well as milk yield (MY), fat yield (FY) and protein yield (PY) in 18,831 Holstein cows reared i...
Effects of Linseed Oil or Whole Linseed Supplementation on Performance and Milk Fatty Acid Composition of Lactating Dairy Cows
Linseed Oil Whole Linseed Milk Production Milk Composition Milk Fatty Acids Dairy Cows
2016/5/16
The objective of this study was to determine the effects of linseed oil or whole linseed supplementation on performance and milk fatty acid composition of lactating dairy cows. Thirty six Holstein Fri...
Estimation of Genetic Parameters for Real-time Ultrasound Measurements for Hanwoo Cows at Different Ages and Pregnancy Status
Real-time Ultrasound Heritability Cows Hanwoo
2016/5/16
The purpose of this study was to estimate genetic parameters of ultrasound measurements for longissimus dorsi muscle area (LMA), backfat thickness (BFT), and marbling score (MS) in Hanwoo cows (N = 3,...
Effect of Vitamin E and Zinc Supplementation on Energy Metabolites, Lipid Peroxidation, and Milk Production in Peripartum Sahiwal Cows
Body Condition Score Glucose Nonesterified Fatty Acid Thiobarbituric Acid Reactive Substance Sahiwal Cows
2016/5/12
The study was conducted to evaluate the effect of vitamin E and zinc supplementation on energy metabolites, lipid peroxidation, and milk production in peripartum Sahiwal cows. For this, thirty-two pre...
Rumen Fermentation and Performance of Lactating Dairy Cows Affected by Physical Forms and Urea Treatment of Rice Straw
Rumen Fermentation Microbial Protein Synthesis Dairy Cows
2016/5/12
The aim of this study was to determine the effect of different physical forms and urea treatment of rice straw on feed intake, rumen fermentation, and milk production. Four, multiparous Holstein cross...