Results 21 to 30 of about 44,292 (263)
Pasture allowance, duration, and stage of lactation—Effects on early and total lactation animal performance [PDF]
Journal of Dairy Science, 2019 Pasture availability in early spring can be limited due to climatic effects on grass production, increasing the likelihood of feed deficits in early lactation of spring-calving pasture-based systems. We hypothesized that restricting pasture allowance (PA) when animals are at peak milk production will have more negative implications on milk production ...
A. Claffey +4 more
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The effects of parity and stage of lactation on hoof temperature of dairy cows using a thermovision camera [PDF]
Journal of Central European Agriculture, 2018 The aim of the study was to determine the effects of the parity and stage of lactation on tissue changes of the dairy cows’ hooves (Holstein; n = 130) and their early detection using the thermovision camera.
Tina Bobić +4 more
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Effects of Age and Stage of Lactation on Type Classification
Journal of Dairy Science, 1969 Abstract Classification records on 2,518 Holstein-Friesian cows in 41 Wisconsin herds were used to determine the effects of age, stage of lactation, and age times stage of lactation interaction on type classification. All cows were rescored every 16 months. A total of 4,656 observations was available for the study. The final score, as well as ratings
Leo R. Hansen, G.R. Barr, D.A. Wieckert
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Microbial Quality of Donkey Milk during Lactation Stages
Foods, 2023 The microbial community in donkey milk and its impact on the nutritional value of donkey milk are still unclear. We evaluated the effects of different lactation stages on the composition and function of donkey milk microbiota. The milk samples were collected at 1, 30, 60, 90, 120, 150, and 180 days post-delivery.
Miaomiao Zhou +4 more
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Siliao yanjiu, 2021 The experiment studied the effect of lactation performance and lactation stages on the apparent digestibility of nutrients, rumen fermentation parameters and milk quality of dairy cows. The experiment adopted a two-factor experimental design.
Shou-qian ZHU +5 more
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Italian Journal of Animal Science, 2010 Individual milk samples were weekly collected from 48 ewes during eight weeks. Ewes were at the second month of lactation and they were fed the same dietary regimen. The animals were grouped according to the amount of daily milk fat yield: A) 38-57g/d, B)
Pierlorenzo Secchiari +5 more
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Dynamics of changes in some selected components of sheep milk in the course of lactation
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2004 The objective of our study was to evaluate dynamics of changes in contents of some components of sheep milk, viz. dry matter (DM), fat (F), true protein (TP), casein (C), whey protein (WP) and lactose (L).
Pavlína Zajícová, Jan Kuchtík
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Endocrine changes in sows weaned at two stages of lactation [PDF]
Reproduction, 1983 Summary. Plasma concentrations of LH, FSH, prolactin, oestradiol-17β and progesterone were determined in 18 multiparous sows at 4-h intervals for 15–18 days around weaning at 3 or 5 weeks post partum. Sampling at 10-min intervals for 6 h occurred every 2 days throughout the same period.
S, Edwards, G R, Foxcroft
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Effect of stage of lactation and milk accumulation on mammary cell differentiation in lactating bats
Experimental Physiology, 1992 Mammary cell differentiation was measured in lactating pipistrelle bats (Pipistrellus pipistrellus) by assay of key enzyme activities, and by determination of protein and lactose synthesis rates in short‐term tissue cultures. By these criteria, mammary cell differentiation did not change significantly with stage of lactation, but depended on the extent
C J, Wilde +4 more
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Journal of Dairy Science, 2001 The objective of the experiment was to examine, using indirect calorimetry, the effects of milk yield and stage of lactation on the response in milk and body tissue energy, and heat production, to a reduction (decrement) in nutrient intake (assessed as metabolizable energy intake).
R M, Kirkland, F J, Gordon
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