Ruminal protein digestibility of Australian produced oilseed meals

Heim, Rebecca Alice Louise; Krebs, Gaye

doi:10.1071/an18054

Cited by 4 publications

(1 citation statement)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To confirm this, RDP correlated ( p < 0.001) positively to PA and negatively to PC, even if others did not observe a direct effect of ADIP level on protein availability [55,56,57]. Reduced rumen degradability is a typical trait of heat-treated vegetable proteins, mainly due to heat-promoted peptide chain cross-linkage rearrangements and chemical bounds with carbohydrates [58]. In lack of heat treatment, the higher estimated RUP content observed for ToC, HeC and PoC in comparison to SuC and CaC can be likely due to differences in the source material, including the presence of gelatinous compounds and lack of surface area for bacterial to adhere [59,60].…”

Section: Discussionmentioning

confidence: 99%

High Fiber Cakes from Mediterranean Multipurpose Oilseeds as Protein Sources for Ruminants

Serrapica

Masucci

Raffrenato

et al. 2019

Animals

View full text Add to dashboard Cite

Simple SummaryRecovery and valorization of residues are key factors for agro-industry to progress towards circular-economy models and more sustainable productions. In the vegetable oils industry, large quantities of spent seed cakes are produced downstream of the oil extraction processes, and their use as animal feedstuffs, mainly as protein supplements for ruminants, is a possible valorization strategy. In this study, we analyzed chemical composition and in vitro digestibility of spent cakes from sunflower, pomegranate, cardoon, tobacco and hemp that are multipurpose cultures emerging in Mediterranean area. The results showed that the cakes of tobacco, cardoon and hemp might be interesting alternative protein feeds for ruminants. The valorization of these cakes may potentially improve economic and environmental sustainability of the emerging vegetable-oil production chains.AbstractFifteen oilseed cakes from sunflower, pomegranate, cardoon, tobacco and hemp were characterized with regard to chemical composition, Cornell Net Carbohydrate and Protein System (CNCPS) fractionation, in vitro digestibility of dry matter, neutral detergent fiber, and crude protein. All the cakes presented low moisture, rather variable ether extract contents and medium to high levels of crude protein and neutral detergent fiber. The cakes significantly differed in terms of CNCPS partitioning and in vitro digestibility. Tobacco and hemp cakes presented high contents of slow degradable fractions of crude protein and carbohydrate joined to good post-ruminal protein digestibility. Cardoon cakes presented the highest rumen protein degradability. Based on crude protein content and intestinal digestibility of rumen undegraded protein, cakes of tobacco and hemp showed the better potential as alternative protein supplements for ruminants, while pomegranate appears to be the least suitable for ruminant feeding.

show abstract

Section: Discussionmentioning

confidence: 99%

High Fiber Cakes from Mediterranean Multipurpose Oilseeds as Protein Sources for Ruminants

Serrapica

Masucci

Raffrenato

et al. 2019

Animals

View full text Add to dashboard Cite

show abstract

Canola meal as a supplement for grass-fed beef cattle: Effects on growth rates, carcase and meat quality, and consumer sensory evaluations

Lynch,

Clayton,

Holman

et al. 2024

Meat Science

View full text Add to dashboard Cite

Bioactive metabolites of Asparagopsis stabilized in canola oil completely suppress methane emissions in beef cattle fed a feedlot diet

Cowley,

Kinley,

Mackenzie

et al. 2024

Journal of Animal Science

View full text Add to dashboard Cite

Asparagopsis taxiformis (Asparagopsis) has been shown to be highly efficacious at inhibiting the production of methane (CH4) in ruminants. To date, Asparagopsis has been primarily produced as a dietary supplement by freeze-drying to retain the volatile bioactive compound bromoform (CHBr3) in the product. Steeping of Asparagopsis bioactive compounds into a vegetable oil carrier (Asp-Oil) is an alternative method of stabilizing Asparagopsis as a ruminant feed additive. A dose-response experimental design used 3 Asp-Oil-canola oil blends, Low, Medium and High Asp-Oil which provided 17, 34 and 51 mg Asparagopsis derived CHBr3/kg DMI, respectively (in addition to a zero CHBr3 canola oil control), in a tempered-barley based feedlot finisher diet, fed for 59 days to 20 Angus heifers (5 replicates per treatment). On 4 occasions, liveweight was measured and CH4 emissions were quantified in respiration chambers, and blood, rumen fluid and fecal samples were collected. At the end of the experiment, all animals were slaughtered, with carcasses graded, and samples of meat and edible offal collected for testing of consumer sensory qualities and residues of CHBr3, bromide and iodide. All Asp-Oil treatments reduced CH4 yield (g CH4/kg DMI, P = 0.008) from control levels, with the Low, Medium and High Asp-Oil achieving 64, 98 and 99 % reduction, respectively. Dissolved hydrogen increased linearly with increasing Asp-Oil inclusion, by more than 17-fold in the High Asp-Oil group (P = 0.017). There was no effect of Asp-Oil treatment on rumen temperature, pH, reduction potential, VFA and ammonia production, rumen pathology and histopathology (P > 0.10). There were no differences in animal production and carcass parameters (P > 0.10). There was no detectable CHBr3 in faeces or any carcass samples (P > 0.10), and iodide and bromide residues in kidneys were at levels unlikely to lead to consumers exceeding recommended maximum intakes. Overall, Asp-Oil was found to be safe for animals and consumers of meat, and effective at reducing CH4 emissions and yield by up to 99 % within the range of inclusion levels tested.

show abstract

Ruminal protein digestibility of Australian produced oilseed meals

Cited by 4 publications

References 23 publications

High Fiber Cakes from Mediterranean Multipurpose Oilseeds as Protein Sources for Ruminants

High Fiber Cakes from Mediterranean Multipurpose Oilseeds as Protein Sources for Ruminants

Canola meal as a supplement for grass-fed beef cattle: Effects on growth rates, carcase and meat quality, and consumer sensory evaluations

Bioactive metabolites of Asparagopsis stabilized in canola oil completely suppress methane emissions in beef cattle fed a feedlot diet

Contact Info

Product

Resources

About