Behaviors associated with cows more prone to produce milk with reduced stability to ethanol test due to feeding restriction

Stumpf, Marcelo Tempel; Fischer, Vívian; Kolling, G. J.; Silva, Alessandra Ventura da; Ribeiro, M. E. R.; Santos, C. da S. dos

doi:10.1590/0103-8478cr20151246

Cited by 3 publications

(2 citation statements)

References 15 publications

(21 reference statements)

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“…Todas estas características aumentam as chances da desestabilização das micelas de caseína, principalmente devido ao efeito do LINA acumulado em alguns períodos de escassez de alimento. Todavia, o atendimento às exigências nutricionais acompanha a maior estabilidade do leite ao teste do álcool (Stumpf et al, 2016), possivelmente devido a uma permeabilidade reduzida das tight junctions em animais bem alimentados (Stumpf et al, 2016).…”

Section: Conforme Os Resultados Obtidos Porunclassified

Ocorrência de Leite Instável Não Ácido (LINA) em propriedades comerciais da região Extremo Oeste de Santa Catarina

Manske

Danieli

Zuffo

et al. 2020

RSD

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The objective was to differentiate dairy farms and correlate their characteristics with the occurrence of Unstable non-acid milk (UNAM) in the far west of Santa Catarina. In addition to ascertaining the lowest graduation in the alcohol test for milk selection in a commercial dairy. Assessments were made at 45 farms that sold milk in the commercial dairy. Management and production characteristics were identified between August and December of 2016. Milk samples were collected biweekly from the cooling tank between August 2016 and July 2017. They were analyzed for stability to alcohol testing in gradations from 72 to 80 % at 2% intervals, in addition to the boil test, titratable acidity, and pH. The Pearson's Chi-square test was used to evaluate the difference between the UNAM in the graduations tested and the regression analysis to estimate the effect of quantitative variables on the accumulated UNAM. Regression analysis as performed to verify the effect of the month of the year on the UNAM. The milk production in 91% of the farms was in the pasture system with supplementation and the rest in semiconfinement. The area of the farm was 23.6 ± 16 ha to keep 23.6 ± 9.3 lactating cows producing on average of 16.6 ± 4.9 liters/cow. The incidence of UNAM increased concomitantly with the increase in the alcoholic grade used in the test and, in February, the lowest grade for identification of UNAM was found. The study concluded that the accumulated UNAM correlated negatively with the area to produce food and animal productivity. The 76% alcohol content is the best alternative to select commercialized milk.

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Section: Conforme Os Resultados Obtidos Porunclassified

Ocorrência de Leite Instável Não Ácido (LINA) em propriedades comerciais da região Extremo Oeste de Santa Catarina

Manske

Danieli

Zuffo

et al. 2020

RSD

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“…The reduction in milk yield was observed in all studies that restricted feed supply (Zanela et al ., 2006; Barbosa et al ., 2012; Fruscalso et al ., 2013; Stumpf et al ., 2013; Schmidt, 2015). The relation between low MES and feed restriction may be explained by the stress caused by the restriction of feed supply and/or nutritional imbalance in a sudden way, altering animal behavior, e.g., increase in competition events and discomfort manifestations such as vocalizations, agonistic behavior and stereotypies, resulting in increased cortisol secretion (Stumpf et al ., 2013, 2016). Moreover, these stress-induced behavioral and metabolic changes augmented plasma lactose concentration and sodium content in milk, while reducing lactose concentration in milk (Stumpf et al ., 2013), signaling an increased permeability of the tight junctions of mammary epithelial cells (Stelwagen et al ., 2000).…”

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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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What can kinematics tell us about the affective states of animals?

Guesgen

Bench

2017

Anim. welf.

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An animal's welfare state is intrinsically linked to its affective state. Evidence suggests that sentient, conscious animals can experience a range of affective states, such as pain, fear or boredom as well as positive affects like joy, curiosity, satiation or lust. In the behavioural assessment of animal welfare, there is increasing recognition that it is not simply which behaviours an animal engages in but also the quality of its movement. Kinematics is an approach which is being more widely applied to the behavioural assessment of animal welfare. Kinematics is a field of mechanics that describes the movement of points on a body by defining these points in a coordinate system and precisely tracking how they change in terms of space and time. A major opportunity exists for using kinematic technology to inform our understanding of the emotional state of animals. This review argues that kinematics is a useful methodology for identifying and characterising movement indicative of an animal's affective state. It demonstrates that kinematics: i) appears useful in detecting subtleties in the expression of affective states; ii) could be used in conjunction with, and add extra information to, affective tests (for example, an approach/avoidance paradigm); and iii) could potentially, eventually, be developed into an automated affective state detection system for improving the welfare of animals used in research or production. Furthering our knowledge of animal affective states using kinematics requires engagement from many areas of science outside of animal welfare, such as sports science, computer science, engineering and psychology.

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Behaviors associated with cows more prone to produce milk with reduced stability to ethanol test due to feeding restriction

Cited by 3 publications

References 15 publications

Ocorrência de Leite Instável Não Ácido (LINA) em propriedades comerciais da região Extremo Oeste de Santa Catarina

Ocorrência de Leite Instável Não Ácido (LINA) em propriedades comerciais da região Extremo Oeste de Santa Catarina

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

What can kinematics tell us about the affective states of animals?

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