Feeding restriction impairs milk yield and physicochemical properties rendering it less suitable for sale

Fruscalso, Vilmar; Stumpf, Marcelo Tempel; McManus, Concepta; Fischer, Vívian

doi:10.1590/s0103-90162013000400003

Cited by 7 publications

(6 citation statements)

References 14 publications

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“…The improved milk stability in the ethanol test (with higher levels of nutritional supply) have been reported when diets with a low percentage of fibre (Barchiesi-Ferrari et al, 2007) or high overall nutrient supply (Fruscalso et al, 2013) were fed to animals, albeit in the latter just two diets (50% of feed restriction and with no restriction) were evaluated. The integrity of the tight junctions of mammary epithelial cells is disturbed by nutrient deprivation and it is associated with lower lactose content but higher concentrations of sodium and chloride in milk (Chavez et al, 2004;.…”

Section: Discussionmentioning

confidence: 86%

Different levels of supplied energy for lactating cows affect physicochemical attributes of milk

Gabbi¹,

McManus²,

Marques³

et al. 2018

J. Anim. Feed Sci.

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Section: Discussionmentioning

confidence: 86%

Different levels of supplied energy for lactating cows affect physicochemical attributes of milk

Gabbi¹,

McManus²,

Marques³

et al. 2018

J. Anim. Feed Sci.

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“…In this research, the restriction of dietary supply increased the fat content by 22.78% and reduced the protein content in milk by 17.5% and milk production by 24.84%. In Holstein cows with 188±124 days in milk, Fruscalso et al (2013) verified that the restriction diet in 50% of the quantity offered in the control diet reduced fat and protein content by 22.80 and 22.22%, respectively. The authors also verified decrease milk production by 40%, body condition score by 5% and lactose by 1.7.…”

Section: Discussionmentioning

confidence: 71%

“…As for BW of the animals, there was a decrease of 11.94% for cows under restriction. According to Fruscalso et al (2013), underfeeding dairy cows generates a negative energy balance, and cows try to cope with the nutritional deficit by lowering milk production, mobilizing body reserves and BW. Gross et al (2011) verified that the feed restriction of lactating cows for three weeks reduced their body weight.…”

Section: Discussionmentioning

confidence: 99%

“…of body tissues for maintenance, as well as present direct reactions in the productive and reproductive activities of the animal (Schütz et al, 2013), which leads to metabolic and adaptive changes in the body (Gabbi et al, 2016). Burke et al (2010) reported that, depending on the severity and time of feed restriction in lactating cows, there may be a reduction in milk production and, consequently, in the percentage of fat and protein and an increase in the somatic cell count (Fruscalso et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Feed restriction of F1 Holstein × Zebu cows in the final third of lactation modifies intake, nutrient digestibility, feeding behavior, and performance

et al. 2019

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The objective of this study was to evaluate the effect of quantitative feed restriction level on nutrient intake and digestibility, nitrogen balance, efficiency and feeding behavior, and productive performance of F1 Holstein × Zebu cows in late lactation. Sixty F1 Holstein × Zebu cows were used at the stage of late lactation (183.0±17.5 days of lactation) and with initial body weight (BW) of 499±30 kg. The experimental arrangement adopted was the completely randomized design, with five feed restriction levels (3.39, 2.75, 2.50, 2.25, and 2.00% of BW) and twelve cows as replicates for each treatment. The roughage:concentrate ratio was of 75:25 in the total dry matter of the diet. The restriction of dietary supply from 3.39 to 2.0% of BW linearly reduced dry matter intake by 51.74%. The restriction in diet supply linearly increased dry matter digestibility in 13.76%. For each 1% BW restriction in the diet supply for the animals, there was a linear reduction of 3 h in feeding time. Restriction in diet supply of crossbred cows from 3.39 to 2.0% of BW reduced milk production by 24.84%. For each 1% restriction on supply, 2.17 L of milk were not produced. Milk production corrected to 3.5% fat was not altered with the feed restriction. Final BW decreased 41 kg for each percentage unit of diet restriction. Feed efficiency increased 28.72% with feed restriction. For F1 Holstein × Zebu cows in the late lactation, the restriction of dietary supply up to 2.0% of body weight decreases nutrient intake, nitrogen balance, rumination time, and milk production; however, it improves nutrient digestibility and feed efficiency of the animals.

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“…Milk ethanol stability (MES) is influenced by several factors related to farm, environment, animals, feeding practices (Marques et al ., 2010b; Martins et al ., 2019) and animal health (Marques et al ., 2011). It is already known that the raw milk stability decreases with reducing availability of pasture plus supplement (Fruscalso et al ., 2013) or with TMR (Zanela et al ., 2006; Gabbi et al ., 2015) Decreased MES is also linked to a lower supply of nutrients (Stumpf et al ., 2013) or an imbalance between nutrients such as energy and protein (Marques et al ., 2010b; Gabbi et al ., 2015; Schmidt, 2015), as well as with an increase in the fiber content of forages provided (Barchiesi et al ., 2007). The effect of feed restriction on MES depends, among other factors, on its severity and duration (Gabbi et al ., 2015).…”

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confidence: 99%

The effect of diet restriction on raw milk stability: a meta-analytical approach

Garcia,

Bettencourt,

Aires

et al. 2023

Journal of Dairy Research

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This research communication was designed to evaluate the effects of different levels of diet restriction on the composition and ethanol stability (MES) of raw bovine milk. This research was carried out using three electronic databases: Scopus, Pubmed and Web of Science. The main inclusion criteria were: (i) original research, (ii) use of alcohol (ethanol) test as a method to assess milk stability, (iii) measure different levels of feed restriction and (iv) allow access to the raw data of articles. Of the nine publications that addressed the subject filtered by the systematic review, seven fitted the selection criteria and were selected to perform the meta-analysis. Feed restriction (reduction of 20, 30, 40 and 50% of the dietary dry matter offered) decreased (P < 0.01) milk yield (−18%), ethanol stability (−5%), acidity (−4%), protein (−3%) and lactose (−2%) concentrations, but did not affect the values of pH, density, fat and total solids concentrations, nor somatic cell count. The correlation between milk yield and MES was low but positive and numerically higher in the control group compared with the restriction group. The milk of cows fed the control diet presented greater ethanol stability (76.5%) compared with milk of cows fed the restrictive diet (72.8%). This decrease by up to 4 percentage units due to restriction levels ranging from 20 to 50% of diet intake may cause limitations in milk processing at the dairy industry, increasing milk rejection.

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Feeding restriction impairs milk yield and physicochemical properties rendering it less suitable for sale

Cited by 7 publications

References 14 publications

Different levels of supplied energy for lactating cows affect physicochemical attributes of milk

Different levels of supplied energy for lactating cows affect physicochemical attributes of milk

Feed restriction of F1 Holstein × Zebu cows in the final third of lactation modifies intake, nutrient digestibility, feeding behavior, and performance

The effect of diet restriction on raw milk stability: a meta-analytical approach

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