Morning vs. evening feed delivery for lactating dairy cows

Nikkhah, Akbar; Furedi, C J; Kennedy, A. D.; Scott, Shannon L.; Wittenberg, K. M.; Crow, G. H.; Plaizier, J.C.

doi:10.4141/cjas10012

Cited by 32 publications

(24 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Protein seems to be less sensitive than fat to the negative effects of heat stress and climate variability. The results in this study agree with the results reported by other studies, such as [47][48][49][50][51][52][53].…”

Section: Discussionsupporting

confidence: 83%

A Survey of the Relationship between Climatic Heat Stress Indices and Fundamental Milk Components Considering Uncertainty

Milani

Hense

Rahmani

et al. 2015

Climate

View full text Add to dashboard Cite

Abstract:The main purpose of this study is to assess the relationship between four bioclimatic indices for cattle (environmental stress, heat load, modified heat load, and respiratory rate predictor indices) and three main milk components (fat, protein, and milk yield) considering uncertainty. The climate parameters used to calculate the climate indices were taken from the NASA-Modern Era Retrospective-Analysis for Research and Applications (NASA-MERRA) reanalysis from 2002 to 2010. Cow milk data were considered for the same period from April to September when the cows use the natural pasture. The study is based on a linear regression analysis using correlations as a summarizing diagnostic. Bootstrapping is used to represent uncertainty information in the confidence intervals. The main results identify an interesting relationship between the milk compounds and climate indices under all climate conditions. During spring, there are reasonably high correlations between the fat and protein concentrations vs. the climate indices, whereas there are insignificant dependencies between the milk yield and climate indices. During summer, the correlation between the fat and protein concentrations with the climate indices decreased in comparison with the spring results, whereas the correlation for the milk yield increased. This methodology is suggested for OPEN ACCESSClimate 2015, 3 877 studies investigating the impacts of climate variability/change on food and agriculture using short term data considering uncertainty.

show abstract

Section: Discussionsupporting

confidence: 83%

A Survey of the Relationship between Climatic Heat Stress Indices and Fundamental Milk Components Considering Uncertainty

Milani

Hense

Rahmani

et al. 2015

Climate

View full text Add to dashboard Cite

show abstract

“…This implies a greater rumen digestion capacity during night than day [8]. Such a greater overnight rumen volume and fermentation has been shown in grazing cows [8] and intensively housed lactating cows [4,9]. If the increased rumen fermentation capacity is concurrent with increased rumination, optimum rumen pH and microbial metabolism may be easier to secure with evening vs. morning feeding.…”

Section: Science Of Feed Intake Evolutionmentioning

confidence: 99%

“…These suggest that dairy cows' intake shortly postfeeding depends on time of day. In the study of Nikkhah et al [4], the proportion of daily intake consumed within 3 h post-feeding was 55% in 2100 h-fed cows and only 46% in 0900 h-fed cows (Figure 1). Nikkhah et al [2,3] found that 2100 h-fed cows ate 37% but 0900 h-fed cows ate only 26% of their daily intake within 3-h of feeding.…”

Section: Postprandial Intake Patterns For Evening Vs Morning Feedingmentioning

confidence: 99%

“…Feeding timing has most recently been found to alter ruminant chronobiology [1][2][3][4]. The time of feed delivery and the time of most intense eating activity determine postprandial rhythms and daily amount of intake [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…The time of feed delivery and the time of most intense eating activity determine postprandial rhythms and daily amount of intake [1][2][3][4]. Chronobiologically, for maximum nutrient efficiency and health, nutrient supply to reticulorumen, splanchnic and peripheral tissues should be synchronized with endogenous rhythms in ruminant endocrinology and metabolism [5].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Bioscience of ruminant intake evolution: feeding time models

Nikkhah¹

2011

ABB

View full text Add to dashboard Cite

Ruminants have evolved to ruminate mostly overnight and graze during day. As such, rumen fermentation, post-rumen nutrient assimilation and peripheral metabolism have 24-h patterns. These evolutionary rhythms in eating behavior and metabolism have led to annual, seasonal, and circadian rhythms in ruminant endocrinology. Such natural patterns have encountered dramatic shifts in productivity in the last few decades. For optimum nutrient use and animal health, securing a synchrony between external cues and ruminant internal conditions is essential. Most recent discoveriess suggest alterations in postprandial intake patterns of non-grazing lactating cows by altered feeding time. Eating rate and feed intake within the first 3 h after feeding have been increased by evening instead of morning feeding. As a result, postprandial patterns in rumen fermentation and peripheral blood levels of metabolites and hormones have been altered. These findings and insights establish a chronological nature for intake regulation in modern ruminants. Feeding time is a major external cue that affects eating extent, rate and efficiency in ruminants. Time of feeding requires special consideration and more mechanistic evaluations for animals and humans.

show abstract