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Frequency analysis of noise exposure of dairy cows in the process of milking
hearing sensitivity welfare cattle milk production milking parlour
2016/12/9
In the environment of farms and farm buildings, cattle are exposed to various unnatural influences. Such an impact is also noise always arising with a certain energy conversion. In cattle farms, the s...
Influence of composite κ-casein and β-lactoglobulin genotypes on composition, rennetability and heat stability of milk of cows of Slovak Pied breed
cow milk genetic polymorphism milk protein casein rennetability heat stability
2015/6/4
The effect of the phenotypic combination of genetic variants κ-CN/β-Lg on the contents of technologically and nutritionally important components of milk as well as technological properties of milk was...
Quality of cows’ milk from organic and conventional farming
hedonic evaluation microbiological quality milk composition Holsein cattle
2014/8/11
The results of chemical and microbial analyses of raw milk samples coming from organic and conventional farming systems were statistically compared. The samples were analysed during a twelve-month per...
Short Communication: Associations Between Blood Calcium Status at Calving and Milk Yield in Dairy Cows
blood plasma concentration hypocalcemia milk yield
2008/8/6
The purpose of the present study was to estimate the effect of total blood plasma calcium (TBPCC) concentration at calving on milk yield in dairy cows. Data originated from 153 dairy cows in 27 herds ...
Short Communication: Effects of Isolation Stress on Mammary Tight Junctions in Lactating Dairy Cows
isolation stress endotoxin milk tight junction
2008/8/5
Eighteen cows had been selected for their responsiveness to psychological stress during the first lactation and were classified as having low (n = 10) or high (n = 8) cortisol concentrations in respon...
Soybeans Versus Animal Sources of Rumen-Undegradable Protein and Fat for Early Lactation Dairy Cows
roasted soybeans animal by-products dairy cattle lactation
2008/8/1
Fifteen multiparous Holstein cows averaging 39 DIM were used in a replicated 5 x 5 Latin square design to compare roasted soybeans and animal by-products as supplements for increasing the RUP content ...
Sulfur and Selenium Accretion in the Gravid Uterus During Late Gestation in Holstein Cows
sulfur selenium conceptus dairy cows
2008/7/29
Multiparous Holstein cows (n = 18) were bred artificially to the same Holstein bull and then slaughtered at times from 190 to 270 d postmating to assess S and Se accretion in the fetus and nonfetal co...
Synthesis of Microbial Protein in Ruminally Cannulated Cows Fed Alfalfa Silage, Alfalfa Hay, or Corn Silage
ruminal synthesis of microbial proteins nitrogen-15 alfalfa forage
2008/7/29
Six ruminally cannulated cows were used in an experiment with a 3 x 3 Latin square design. Three all forage diets—alfalfa silage, alfalfa hay, or corn silage plus 2.2% urea (DM basis)—were fed for ad ...
The Association Between Previous 305-day Milk Yield and Disease in New York State Dairy Cows
disease milk yield dairy cows
2008/7/28
Logistic regression was used to examine the association between milk yield and disease. We studied 8070 cows of second or higher parity from 25 New York State Holstein herds, calving between June 1990...
The Association Between Cumulative Milk Yield, Days Open, and Days to First Breeding in New York Holstein Cows
days open survival analysis milk yield
2008/7/25
The associations among milk yield, days open, and days to first breeding were studied in 15,320 Holstein cows, calving between June 1990 and November 1993, in 26 New York herds. Survival analysis, inc...
The Effect of Bovine Somatotropin and Diet on Somatotropin Binding Sites in Hepatic Tissue of Lactating Dairy Cows
binding sites dairy cows liver somatotropin
2008/7/23
In the lactating cow, galactopoiesis is stimulated by treatment with recombinant bovine somatotropin (bST) and by an improved plane of nutrition. The present study determined the interaction between t...
The Effect of Feed Intake and Growth Hormone-Releasing Factor on Lactating Dairy Cows
growth hormone-releasing factor intake insulin-like growth factor-I binding proteins
2008/7/18
Twenty-four lactating dairy cows, averaging 30.0 kg/d of milk and 159 d of lactation, were used to study the effect of feed intake and growth hormone-releasing factor in a 2 x 2 factorial arrangement....
The Effect of Replacing Dietary Beet Pulp with Wheat Treated with Sodium Hydroxide, Ground Wheat, or Ground Corn in Lactating Cows
lactating cows wheat treated with sodium hydroxide dietary starch
2008/7/17
This experiment examined the effect of complete diets composed of 60% grass silage and 40% concentrate based mainly on beet pulp, ground wheat, wheat treated with NaOH, or ground corn on milk producti...
The Effect of Supplementary Protein on In Vivo Metabolism of the Mammary Gland in Lactating Dairy Cows
protein mammary gland metabolism lactation
2008/7/16
Four lactating cows equipped with rumen and duodenal cannulas were fed a diet of grass silage and concentrates containing either 12.4 or 17.2% CP (DM basis) in a change-over design. Additional protein...
The Effect of Treating Forages with Fibrolytic Enzymes on its Nutritive Value and Lactation Performance of Dairy Cows
enzymes cellulase xylanase forage
2008/7/16
Forages (corn silage and alfalfa hay) were sprayed with liquid enzymes prior to combining with a concentrate to form a total mixed ration (50% forage:50% concentrate, dry matter basis) and fed to lact...
