Profile of digested feed amino acids from untreated and expander treated feeds estimated using in situ methods in dairy cows

Lund, Peter; Weisbjerg, M.R.; Hvelplund, T.

doi:10.1016/j.livsci.2007.04.012

Cited by 18 publications

(23 citation statements)

References 37 publications

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“…Sauvant et al (2004). Content of CP in ERC determined in our study is comparable with values reported for extruded RM (Sauvant et al, 2004) or RC (Rinne et al, Lund et al, 2008). The content of CP in EFFS used in present study was comparable to value of Gonzáles et al (2002) and higher than that reported for the same type of feed in feed tables of Sauvant et al (2004).…”

Section: Discussion Nutritional Value Of Protein Supplementssupporting

confidence: 89%

“…The deg value of ERC determined in our study is in agreement with values for full-fat rapeseed (Sauvant et al, 2004) and for heat-treated RC . On the other hand, lower deg value was reported by Lund et al (2008) for untreated or expanded RC (119 °C), by Rinne et al (1999) for heat-treated RC or by Homolka et al (2007) for untreated RC. However in the latter mentioned study, higher deg value was found in RM expeller a er hot pressing of rapeseed.…”

Section: Discussion Nutritional Value Of Protein Supplementsmentioning

confidence: 75%

“…In spite of a similar technological processing, values of deg of ERC and EFFS determined in our study diff ered considerably. Higher deg found in ERC supplement was probably caused by lower temperature exposition during extrusion (Lund et al, 2008). Furthermore, lower response of rapeseed protein to heat treatment in comparison to soybean protein could contribute to this diff erency as well as suggested by Petit et al (1997).…”

Section: Iv: Eff Ect Of the Type Of Diet On Nutrients And Essential Amentioning

confidence: 90%

“…Rapeseed meal is currently used in dairy cows' diets and can fully replace soybean meal without considering diff erences in yield of milk and milk components (Schmidely et al, 2004;Brito and Broderick, 2007). In the case of rapeseed feeding components heat treatment is associated with palatability improvement, anti-nutritional factors decrease (Jensen et al, 1995) and with increase of ruminally undegradable protein content in range of ruminants nutrition (Lund et al, 2008). In the case of heat-treated rapeseed cakes (RC) only several studies have made direct comparisons with other commonly used protein sources (rapeseed meal (RM) and soybean meal (SM)) in dairy cows diet (Ahvenjärvi et al, 1999;Rinne et al, 1999;Shingfi eld et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Maize Silage-based Diets for Dairy Cows Containing Extruded Rapeseed Cake or Extruded Full-fat Soybean as Major Protein Sources

Třináctý¹,

Richter²,

Křížová³

2016

Acta Univ. Agric. Silvic. Mendelianae Brun.

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Abstract. Cows were divided into two groups -the fi rst was fed a diet based on extruded rapeseed cake (D-ERC), the second one was fed a diet based on extruded full-fat soybean (D-EFFS), both diets contained maize silage and meadow hay. The experiment was divided into 4 periods of 42 days. Intake of dry matter, crude protein and NEL was not aff ected by the treatment (P > 0.05) while the intake of PDIA, PDIN and PDIE was lower in D-ERC than in D-EFFS (P<0.05). Milk yield in D-ERC (22.6 kg.d , respectively (P < 0.01). Concentration of AA in blood plasma was not aff ected by the type of diet except of His and Ile that were higher in D-EFFS (P < 0.01).

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Section: Discussion Nutritional Value Of Protein Supplementssupporting

confidence: 89%

Section: Discussion Nutritional Value Of Protein Supplementsmentioning

confidence: 75%

Section: Iv: Eff Ect Of the Type Of Diet On Nutrients And Essential Amentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparison of Maize Silage-based Diets for Dairy Cows Containing Extruded Rapeseed Cake or Extruded Full-fat Soybean as Major Protein Sources

Třináctý¹,

Richter²,

Křížová³

2016

Acta Univ. Agric. Silvic. Mendelianae Brun.

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“…The extrusion enhances intestinal digestibility, but the effect of extrusion on the extent of rumen degradation depends upon the cereal grain (LUND; WEISBJERG; HVELPLUND, 2008;SOLANAS et al, 2008). As dairy diets are often corn based and provide significant amounts of Met, it is very important to study corn processing and its effect on digestion.…”

Section: Introductionmentioning

confidence: 99%

Site and extent of amino acid digestion in dairy cattle fed with corn and its byproducts

Ferreira

Galati

Sancanari³

et al. 2015

Sem. Ci. Agr.

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The study was conducted to evaluated the site and extent of dry matter (DM), crude protein (CP), methionine (Met), lysine (Lys), and threonine (Thr) digestion of corn and byproducts obtained from corn germ mixed with different amounts of extruded or non-extruded ether extract (EE) in dairy cattle. Treatments consisted in eight types of feed and two processing in a 4 × 2 factorial design. There were four feeds: corn grain cracked (Corn), corn germ meal with 1% EE (CG1), corn germ meal with 7% EE (CG7), and corn germ meal with 10% EE (CG10). The feeds were processed in one of two ways: extruded (Ex) and not extruded. In situ techniques were used to determine DM, CP, Met, Lys, and Thr partial and total tract digestion. A basic diet was compounded of corn germ meal, soybean meal and coastcross hay in a 70:30 roughage to concentrate ratio. There was no interaction (P>0.05) between feeds and processing method. Extrusion improved (P<0.05) total tract digestibility of corn DM but not CP. Intestinal digestibility was similar (P>0.05) for corn and corn germ meal mixed with 7 and 10% EE, regardless of EE processing method. The CP total tract digestibility of corn germ meal with 1% nonextruded EE was 16.62% higher (P<0.05) than that of the extruded form. The best total CP digestibility was obtained for corn germ meal with 7% EE, independently of the processing method. The effects of EE processing method on partial and total digestibility differed between amino acid. Corn and corn byproduct extrusion may improve dry matter digestibility, but do not necessarily influence crude protein digestion. Ruminal and intestinal digestibility of Met, Lys, and Thr depends on both feed type and processing method. Therefore, amino acid availability should be considered individually. Key words: Extrusion, germ meal, lysine, methionine, rumen ResumoO estudo foi realizado para avaliar o local e a extensão da digestão da matéria seca (MS), proteína bruta (PB), metionina (Met), lisina (Lys) e treonina (Thr) em milho e seus derivados obtidos a partir do gérmen de milho, com diferentes quantidades de extrato etéreo (EE), extrusados ou não, oferecidos para gado leiteiro. Os tratamentos consistiram em oito tipos de alimentos, em arranjo fatorial 4 x 2: quatro dietas (grão de milho moído (Milho); farelo de gérmen de milho com 1% de EE (CG1); farelo de gérmen de milho com 7% de EE (CG7); farelo de gérmen de milho com 10% de EE (CG10)), e dois processamentos extrusado (Ex) e não extrusado. Utilizou-se a técnica in situ para obter a digestão total e parcial no trato da MS, PB, Met, Lys e Thr. A ração básica foi composta de farelo de gérmen de milho, farelo de soja e feno de coastcross numa relação volumoso:concentrado de 70%:30%. Não houve interação (P>0,05) entre dieta e processamento. A extrusão melhorou a digestibilidade total da MS do milho, mas não para a PB. A digestibilidade intestinal foi similar (P>0,05) entre milho e farelo de gérmen de milho com 7 e 10% de EE, independente da extrusão ou não. Sem extrusão, a digestibilidade total da ...

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Effect of extrusion on in situ ruminal protein degradability and in vitro digestibility of undegraded protein from different feedstuffs

et al. 2008

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Profile of digested feed amino acids from untreated and expander treated feeds estimated using in situ methods in dairy cows

Cited by 18 publications

References 37 publications

Comparison of Maize Silage-based Diets for Dairy Cows Containing Extruded Rapeseed Cake or Extruded Full-fat Soybean as Major Protein Sources

Comparison of Maize Silage-based Diets for Dairy Cows Containing Extruded Rapeseed Cake or Extruded Full-fat Soybean as Major Protein Sources

Site and extent of amino acid digestion in dairy cattle fed with corn and its byproducts

Effect of extrusion on in situ ruminal protein degradability and in vitro digestibility of undegraded protein from different feedstuffs

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