EurekaMag
+ Translate
+ Most Popular
Gaucher's disease;thirty-two years experience at Siriraj Hospital
A study of Macrobathra Meyrick from China (Lepidoptera, Cosmopterigidae)
First occurrence in ores of tetragonal chalcocite
Effects of trace element nutrition on sleep patterns in adult women
N.Z. range management guidelines. 2. Design of grazing management systems for tussock country
A case of lipoma of the esophagus
A revision of world Acanthosomatidae (Heteroptera: Pentatomidae): keys to and descriptions of subfamilies, tribes and genera, with designation of types
Life history of the coronate scyphozoan Linuche unguiculata (Swartz, 1788)
Perceptual restoration of obliterated sounds
Mutagenicity studies on two chromium(III) coordination compounds
The formation of the skeleton. I. Growth of a long bone. 1st appearance of a center of calcification
Leucopenia and abnormal liver function in travellers on malaria chemoprophylaxis
The joint commission: four key root causes loom large in sentinel event data
Treatment of vitiligo with topical 15% lactic acid solution in combination with ultra violet-A
Behaviour of dairy cows within three hours after feed supply: I. Influence of housing type and time elapsing after feed supply
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Management and control of patients with type 2 diabetes mellitus in Lebanon: results from the International Diabetes Management Practices Study (IDMPS)
The diet composition and nutritional knowledge of patients with anorexia nervosa
Physoporella croatica Herak, 1958 of the Slovak karst Anisian (Slovakia, the West Carpathians Mts.)
Bright lights, big noise. How effective are vehicle warning systems?
Ein Plesiosaurier-Rest mit Magensteinen aus mittlerem Lias von Quedlinburg
Incidence of Chlamydia trachomatis in patients with sterility
Monster soup: the microscope and Victorian fantasy
Preliminary tests with residual sprays against poultry lice
Duration of the life of plants in phylogeny

Variation in estimates of milk fat protein and lactose content associated with various bulk milk sampling programs


Variation in estimates of milk fat protein and lactose content associated with various bulk milk sampling programs



Journal of Dairy Science 61(8): 1093-1102



ISSN/ISBN: 0022-0302

Three milk samples were taken from each bulk shipment from 26 [cow] herds for 13 mo., 4 samples were taken from each bulk shipment from 22 herds for a month. All herds were located in the Fraser Valley in British Columbia. Some samples (5656) were analyzed fresh with duplicate determinations on 955; the remaining 9842 were used to form herd composite samples (both 1-wk and 2-wk collection periods per composite). All samples were analyzed for milk fat, protein and lactose by IR milk analyzers. These data were used to estimate the variation associated with various sampling and testing programs for bulk milk. The estimate of monthly herd mean milk constitute percentage from 4 simple random samples, or 3 stratified random samples is expected to be at least as precise as the estimate from two 2-wk composite samples. Two-week composites underestimated percent milk fat by .045 .+-. .004 and overestimated percent protein and lactose by .023 .+-. .003 and .010 .+-. .002 compared to fresh samples. Random sampling is expected to be cheaper and more accurate than composite sampling. Milk marketing areas considering changing from composite to random sampling may find useful the formula for calculating the number of random samples required to maintain the precision of composite sampling.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 006892690

Download citation: RISBibTeXText

Related references

Variation in Estimates of Milk Fat, Protein, and Lactose Content Asssociated with Various Bulk Milk Sampling Programs. Journal of Dairy Science 61(8): 1093-1102, 1978

Correlation between the composition of milk (protein, lactose and ash) and the fat content of the milk; the importance for breeding purposes of the fat content of milk. Z. Tierz. ZuchtBiol 55(2/3): 101-142, 1943

Comparative studies on premature infant nutrition with human milk, lactose protein milk, lactose fat milk and acid 2/3 milk. Monatsschrift für Kinderheilkunde 101(8): 357-360, 1953

Feeding premature infants with human milk, lactose-protein milk, lactose-fat milk and diluted citric acid milk. Mschr. Kinderheilk 101(8): 357-60, 1953

Comparative investigation of human milk, lactose-and-protein milk, lactose-and-fat milk, and acid two-thirds milk for premature infants. Monatsschr. Kinderheilk 101: 357-360, 1953

Monitoring cows for metabolic imbalances during peak lactation by analysing milk. Part 1. Daily milk yield, milk fat and milk protein content, milk fat:milk protein ratio, and urea content. Tierarztliche Umschau 52(6): 319-324, 1997

Variation factors in ewe milk fat and protein contents: Global approach using bulk milk tank and milk recording data. Productions Animales 9(3): 201-210, 1996

The measurement of the effects of inherent and environmental factors on the lactose content of the milk of individual cows and of the herd bulk milk in a number of commercial herds. J. Dairy Res 35(1): 107-25, 1968

Comparative study of the compositional profiles of humanized buffalo milk and market infant food Dried milk, fatty acids, analysis, protein content, mineral content, lactose, buffalo milk, Europe. Milchwissenschaft = Milk science international 37(9): 522-524, 1982

The measurement of the effects of inherent and environmental factors on the lactose content of the milk of individual cows and of the herd bulk milk in a number of commercial herds streptococci staphylococci. Journal of Dairy Research 35(1): 107-125, 1968

A new approach to the measurement of the quantitative effects of inherent and environmental factors on the composition of the milk of individual cows and of herds, with particular reference to lactose content The measurement of the effect of inherent and environmental factors on the lactose content of the milk of individual cows and of the herd bulk milk in a number of commercial herds. J. Dairy Res 35: 91-105, 1968

Lactose, glucose and galactose content in milk, fermented milk and lactose-free milk products. International Dairy Journal 73: 151-154, 2017

Seasonal variation in the protein, lactose and mineral content of cows' milk.. Fac. Fish. anim. Husb. Hiroshima Univ 2(1): 79-85, 1958

The lactose content of milk from high milking performance cows. I. Variation factors of the lactose content. Anales del Instituto Nacional de Investigaciones Agrarias Serie produccion animal: 1) 123-141, 1980

Determination and variation of protein, fat and lactose in cow's milk, and selection on these factors. 1. Determination of the protein, fat and lactose content. Neth. Milk Dairy J 17(1): 12-46, 1963