Results 11 to 20 of about 697,360 (389)
Background: In the maintenance of dairy cows, feed must be considered because it can affect the productivity of dairy cows, including milk production and quality.
Dewi Setiyoningsih+3 more
doaj +1 more source
Invited review: Lying time and the welfare of dairy cows.
Adequate time lying down is often considered an important aspect of dairy cow welfare. We examine what is known about cows' motivation to lie down and the consequences for health and other indicators of biological function when this behavior is thwarted.
C. Tucker+4 more
semanticscholar +1 more source
Goodness‐of‐fit tests in proportional hazards models with random effects
Abstract This paper deals with testing the functional form of the covariate effects in a Cox proportional hazards model with random effects. We assume that the responses are clustered and incomplete due to right censoring. The estimation of the model under the null (parametric covariate effect) and the alternative (nonparametric effect) is performed ...
Wenceslao González‐Manteiga+2 more
wiley +1 more source
Milk MycofloraSurvey of Dairy Cows with or without Mastitis [PDF]
Mastitis in cattle is a serious problem which causes considerable economic losses in the dairy cattle herds. The aim of this survey was to identify mycoflorain milk of healthy, clinical and subclinical mastitis of lactating Holstein dairy cows.
Masoud TalebkhanGaroussi+2 more
doaj +1 more source
Review: Overview of factors affecting productive lifespan of dairy cows.
The average productive lifespan is approximately 3 to 4 years in countries with high-producing dairy cows. This is much shorter than the natural life expectancy of dairy cattle.
A. Vries, M. Marcondes
semanticscholar +1 more source
Plant Extracts to Alleviating Heat Stress in Dairy Cows
Heat stress (HS) in cows is a critical issue in the dairy industry. Dairy cows accumulate heat from body metabolism, along with that imposed by air temperature, humidity, air flow and solar radiation.
Yongmei Guo+3 more
doaj +1 more source
Advances in fatty acids nutrition in dairy cows: from gut to cells and effects on performance
High producing dairy cows generally receive in the diet up to 5–6% of fat. This is a relatively low amount of fat in the diet compared to diets in monogastrics; however, dietary fat is important for dairy cows as demonstrated by the benefits of ...
M. Bionaz+2 more
semanticscholar +1 more source
The objective of this study was to explore single nucleotide polymorphisms (SNPs), gene expression and economic evaluation of parameters associated with mastitis susceptibility in Holstein and Brown Swiss dairy cows.
Ahmed I. Ateya+2 more
doaj +1 more source
Influence of pathogens causing clinical mastitis on reproductive variables of dairy cows.
In dairy cattle, mastitis is a disease of the mammary gland caused by pathogens such as bacteria, viruses, fungi, and algae. Mastitis causes economic losses to dairy farms as well as public health concerns. The reproductive efficiency of commercial dairy
F. Dalanezi+7 more
semanticscholar +1 more source
This review attempted to explain factors associated with negative energy balance (NEB) occur¬ring during the periparturient period in dairy cows raised under tropical climatic conditions.
Supawit Triwutanon, Theera Rukkwamsuk
doaj +1 more source