Protein efficiency in intensive dairy production: a Swedish example

Swensson, Christian; Lindmark-Månsson, Helena; Smedman, Ann‐Sofi; Henriksson, Maria; Edman, Anna-Karin Modin

doi:10.1002/jsfa.8362

Cited by 12 publications

(9 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The overall level of ECM yield in the present study was higher than in the studies by Maxin et al (2013) and Ertl et al (2015Ertl et al ( , 2016; this could be explained by lactation stage, breeds, or different nutritional factors. Interestingly, previous calculations of HeFCE for protein showed that lower milk production gave higher protein conversion efficiency for all diets compared (Swensson et al, 2017). Similarly, Patel et al (2017a) found that a low-yielding and more extensive dairy production system was also the most efficient with regard to both protein and EAA.…”

Section: Discussionmentioning

confidence: 82%

Replacing human-edible feed ingredients with by-products increases net food production efficiency in dairy cows

Karlsson

Spörndly

Lindberg

et al. 2018

Journal of Dairy Science

View full text Add to dashboard Cite

Global demand for food is increasing, and use of large amounts of potentially human-edible feedstuffs for dairy cows is an important concern. The present study examined whether feeding a by-product-based concentrate combined with high-quality grass silage to high-producing dairy cows affected feed intake and milk production compared with a conventional diet, as well as the effect on efficiency of human food production. In a changeover experiment with four 21-d periods, 24 dairy cows in mid-lactation were offered 9.6 kg of dry matter per day with 1 of 4 concentrates and high-quality grass silage ad libitum. The control concentrate was based on cereal grain (wheat, oat, and barley) and soybean meal, whereas the 3 by-product-based concentrates contained sugar beet pulp in combination with mainly heat-treated rapeseed meal, distillers grain, or a mixture of both. All diets were formulated to be isoenergetic and isonitrogenous. The cows had 10-fold higher starch intake when fed the control diet than when fed the by-product-based concentrates. Silage intake (13 kg of dry matter/d) and milk production (33 kg of energy-corrected milk/d) were not affected by the change in diet. Therefore, replacing cereals and soybean meal with human-inedible by-products in a high-quality forage diet to dairy cows increased net food protein production substantially without lowering milk production.

show abstract

Section: Discussionmentioning

confidence: 82%

Replacing human-edible feed ingredients with by-products increases net food production efficiency in dairy cows

Karlsson

Spörndly

Lindberg

et al. 2018

Journal of Dairy Science

View full text Add to dashboard Cite

show abstract

“…Over the whole lactation, the 6kgConc cows consumed on average 83% forage (DM basis), whereas the corresponding value for the 12kgConc cows was 68% forage. Both diets can be considered high-forage diets compared with the typical diet of Swedish dairy cows (Emanuelson et al, 2006;Swensson et al, 2017) and dairy cows in other intensive nongrazing production systems (FAO, 2014). Cows offered the 6kgConc diet had higher forage intake, but did not manage to fully replace the lower concentrate ration with forage, and thus total DMI was lower for cows on the 6kgConc diet than for cows offered the 12kgConc diet (Table 3).…”

Section: Feed Intakementioning

confidence: 99%

Whole-lactation feed intake, milk yield, and energy balance of Holstein and Swedish Red dairy cows fed grass-clover silage and 2 levels of byproduct-based concentrate

Karlsson

Lindberg

Åkerlind

et al. 2020

Journal of Dairy Science

View full text Add to dashboard Cite

Ruminants can produce meat and milk from fibrous feed and byproducts not suitable for human consumption. However, high-yielding dairy cows are generally fed a high proportion of cereal grain and pulses, which could be consumed directly by humans. If high production of dairy cows could be maintained with ingredients of low human interest, the sustainability of dairy production would improve. In the present study, 37 multiparous [Holstein (n = 13) and Swedish Red (n = 24)] dairy cows were followed over a whole lactation. A low-concentrate diet of up to 6 kg concentrate per day (6kgConc) was fed to 27 cows, whereas 10 cows were fed a high-concentrate diet of up to 12 kg concentrate per day (12kgConc). The concentrate was mainly based on byproducts (sugar beet pulp, wheat bran, rapeseed meal, distiller's grain). Grass-clover silage of high digestibility was offered ad libitum. Over the whole lactation, cows on the 6kgConc diet had lower dry matter intake and higher forage intake than cows on the 12kgConc diet. Milk yield and energy balance were not influenced by dietary treatment. However, the cows on the 6kgConc diet numerically produced 2.4 kg less energy-corrected milk than cows on 12kgConc diet. The study lacked the statistical power to identify treatment effects on daily yield below 2.8 kg of milk due to low number of animals per treatment. Feed efficiency (as energy-corrected milk yield/dry matter intake or residual feed intake), body weight change, body condition change, milk fatty acid concentration in total milk fatty acids, plasma nonesterified fatty acids, glucose, β-hydroxybutyrate, and fertility measurements were not affected by diet, supporting the energy balance results. However, higher plasma concentrations of insulin-like growth factor-1 and insulin were observed in cows fed the 12kgConc diet. These findings show that cows can adapt to a high-forage diet virtually without humangrade ingredients, without compromising feed efficiency or energy balance, thereby contributing to sustainable food production.

show abstract

“…Toutefois, certains systèmes herbagers qui utilisent de grandes quantités de concentrés consommables par l'Homme peuvent s'avérer consommateurs nets de protéines consommables. C'est par exemple le cas d'un système suédois qui utilise de grandes quantités de féverole qui est consommable par l'Homme dans l'objectif de réduire les tourteaux importés (Swensson et al, 2017) ou de certains systèmes polyculture-élevages français (Laisse et al, 2016). Les systèmes basés sur l'ensilage de maïs utilisent généralement plus de tourteaux de soja, ce qui pénalise leur efficience protéique nette selon nos hypothèses de calcul.…”

Section: Efficience Nette De Conversion Des Protéines Et De L'énergieunclassified

L’efficience nette de conversion des aliments par les animaux d’élevage : une nouvelle approche pour évaluer la contribution de l’élevage à l’alimentation humaine

et al. 2019

View full text Add to dashboard Cite

L’élevage est souvent perçu comme inefficient pour produire des denrées alimentaires pour l’Homme car les animaux consomment davantage de végétaux qu’ils ne produisent de viande, de lait ou d’œufs. Le calcul de l’efficience nette de conversion des aliments en ne considérant dans le calcul que la part potentiellement consommable par l’Homme des aliments utilisés par les animaux permet de relativiser ce constat. En effet, une large part des aliments consommés par les animaux d’élevage (fourrages, coproduits…) n’est pas directement consommable par l’Homme. Appliqués à des systèmes d’élevage français, les calculs d’efficience nette montrent que toutes les productions animales (bovins laitiers et à viande, ovins à viande, porcins, poulets de chair, poules pondeuse) peuvent être producteurs nets de protéines à condition de maximiser la part des végétaux non valorisables en alimentation humaine dans les rations. Le calcul de l’efficience nette est très sensible à l’estimation de la part des aliments utilisés en alimentation animale qui peut être directement valorisée par l’Homme. Celle-ci varie fortement d’une matière première à l’autre selon les habitudes alimentaires et les technologies agroalimentaire qui peuvent évoluer dans le temps. Il est donc nécessaire d’analyser les résultats d’efficience nette à travers plusieurs scénarios de valorisation des matières premières végétales. De même le niveau de valorisation du cinquième quartier de la carcasse des animaux d’élevage pour l’alimentation humaine est très variable et influence sensiblement les résultats d’efficience nette. Enfin, la prise en compte du différentiel de qualité entre les protéines végétales permettrait d’affiner les calculs d’efficience protéique.

show abstract

Protein efficiency in intensive dairy production: a Swedish example

Cited by 12 publications

References 25 publications

Replacing human-edible feed ingredients with by-products increases net food production efficiency in dairy cows

Replacing human-edible feed ingredients with by-products increases net food production efficiency in dairy cows

Whole-lactation feed intake, milk yield, and energy balance of Holstein and Swedish Red dairy cows fed grass-clover silage and 2 levels of byproduct-based concentrate

L’efficience nette de conversion des aliments par les animaux d’élevage : une nouvelle approche pour évaluer la contribution de l’élevage à l’alimentation humaine

Contact Info

Product

Resources

About