Milk urea nitrogen (MUN) of dairy cows was determined in relation to breed. A total of forty (40) Pabna and red Chittagong dairy cattle each of twenty (20) were selected to know the milk composition, nutritional status and milk urea nitrogen. Live weight of Pabna Cattle (187±14 kg) was higher than that of red Chittagong cattle (174±4 kg). In Pabna cattle milk yield (4.94 kg), minerals (0.15%) a...

Bulk tank somatic cell count (BTSCC) is a gold standard test for identification of milk quality, but its results are influenced by several interventional factors. Recently, application of acute phase proteins and especially milk amyloid A (MMA) has been considered as accurate parameters for milk quality study. The current research was done to evaluate the accuracy of MMA, BTSCC, fat, protein an...

The objective of this study was to investigate the effect of milking frequency (two times daily vs. three times daily) on the 305-d lactation milk, fat and protein yield and fat and protein percentage of Holstein dairy cows in Morocco. Data analyzed were 31400 records collected between 2009 and 2016 on 14272 cows raised in 194 herds. The frequency of milking had significant effects (P<...

milk urea nitrogen (mun) of dairy cows was determined in relation to breed. a total of forty (40) pabna and red chittagong dairy cattle each of twenty (20) were selected to know the milk composition, nutritional status and milk urea nitrogen. live weight of pabna cattle (187±14 kg) was higher than that of red chittagong cattle (174±4 kg). in pabna cattle milk yield (4.94 kg), minerals (0.15%) a...

data related to holstein dairy cattle from 1987 to 2004 were obtained from animal breeding center of iran to estimate the genetic and phenotypic trends. variance components and genetic parameters of the first lactation records were estimated using restricted maximum likelihood method and aireml algorithm through matvec program. animal breeding values were predicted through multiple-trait animal...

the pituitary-specific transcription factor (pit-1) gene is a candidate gene for growth, carcass and also for milk yield traits. in dairy farm animals, the main goal of the selection is the improvement of milk yield and composition. the genes of milk proteins and hormones are excellent candidate genes for linkage analysis with quantitative trait loci (qtl) because of their biological significan...

some factors affecting crude protein balance (cpb), as a measure of efficiency, were studied using 2824 records of 501 lactating holstein cows. the cpb (kg d-1) was calculated as crude protein (cp) intake (kg) minus cp yield (kg). two different statistical methods including principal components (pcs) and general linear model analyses were used to study the effects of different factors. crude pr...

background and objectives: the effect of the different proteins and polysaccharides on the characteristics of low-fat cheese has been a topic of recent study. the release of aromatic compounds from the cheese is affected by the addition of texture improvers. the present study investigated the addition of polysaccharides and proteins on the hardness, microstructure and ester release of low-fat b...