Daily milk yield correction factors: What are they? [PDF]
JDS Communications, 2023 Cows are typically milked 2 or more times on a test-day, but not all these milkings are sampled and weighed. The initial approach estimated a test-day yield with doubled morning (AM) or evening (PM) yield in the AM-PM milking plans, assuming equal AM and
Xiao-Lin Wu +7 more
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Early-life milk production traits predict lifetime milk yield and support replacement decisions in Holstein, Jersey and Crossbred dairy cows under subtropical conditions [PDF]
Veterinary and Animal ScienceImproving lifetime milk yield through the early identification of superior replacement animals is a key objective of sustainable dairy production systems. This study investigated the potential of first-lactation performance indicators to predict lifetime
Onke Tshona +2 more
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Estimation of Daily Milk Yields from AM/PM Milking Records
Journal of Animal Science and Technology, 2013 Daily milk yields on test days were estimated using morning or afternoon partial milk yields collected by official agencies and the accuracy of the estimates was determined. Test-day data for milk yields consisted of 3,156,734 records of AM/PM partial milking measurements of 255,437 milking Holstein cows from 3,708 farms collected from December 2008 to
Deukhwan Lee, Hongrip Min
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Effects of Once Versus Twice Daily Milking Throughout Lactation on Milk Yield and Milk Composition in Dairy Goats [PDF]
Journal of Dairy Science, 2003 The effects of once (1X) vs. twice (2X) daily milking throughout lactation on milk yield, milk composition, somatic cell count (SCC), and udder health were studied in 32 Murciano-Granadina dairy goats. Goats were assigned at wk 2 of lactation to two treatment groups; once daily milking at 0900 (1X, n = 17), or twice daily milking at 0900 and 1700 (2X ...
Gerardo Caja +2 more
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Estimating test-day milk yields by modeling proportional daily yields: Going beyond linearity
Journal of Dairy Science, 2023 In the United States, lactation milk yields are not measured directly but are calculated from the test-day milk yields. Still, test-day milk yields are estimated from partial yields obtained from single milkings. Various methods have been proposed to estimate test-day milk yields, primarily to deal with unequal milking intervals dating back to the ...
Xiao-Lin Wu +2 more
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The Effect of Biostimulative Substance on Daily Milk Yield and Quality Components in Cow´s Milk
Scientific Papers Animal Science and Biotechnologies, 2023 The aim of this work was to assess the impact of the liquid Biopolym FZT on quality components in cow´s milk and daily milk yield. Biopolym was, calibrated by a milking robot, given to dairy cows in a selected breeding around České Budějovice for a ...
Jana Hnisová +4 more
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Comparison of statistical models to estimate daily milk yield in single milking testing schemes
Italian Journal of Animal Science, 2010 Different statistical models were compared to estimate daily milk yield from morning or evening milking test results. The experiment was conducted on 14 family farms with 325 recorded cows. The amount of explained variance was higher for models including
Marija Klopcˇic +3 more
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Variability and correlation of milk urea content with parameters of cow productivity [PDF]
E3S Web of Conferences, 2021 During the work, 24774 individual milk samples for Ayrshire cows (Karelia, Russia) with an annual milk yield of over 8.300 kg were tested (1.355 cows) every month for the last three years. The urea content averaged 32.19 mg% with a daily yield of 25.5 kg.
Bolgov Anatoly +2 more
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Seasonal variations of milk production and quality of Mediterranean ewes in extremely warm weather conditions [PDF]
Journal of Central European Agriculture, 2018 Starting from the assumption that the climatic conditions determine the quantity and quality of available forage on the pastures which is the largest source of nutrients of meal of sheep reared in coastal and island of Croatia, the aim of this research ...
Darija Bendelja Ljoljić +4 more
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ESTIMATED OF GENETIC AND NON GENETIC PARAMETERS FOR DAILY TEST MILK YIELD AND FAT PERCENTAGE IN HAMDANI EWES [PDF]
Mesopotamia Journal of Agriculture, 2012 This experiment was included 655 test-days for milk yield and fat percentage in Hamdani ewes obtained from 56 ewes raised at Grdarasha station- College of Agriculture, Salahaddin University during period from 2001 t0 2002.
Al-Barzinji Y. M
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