The influence of the Maillard reaction upon the nutritive value of fibrous feeds

Soest, P.J. Van; Mason, V. C.

doi:10.1016/0377-8401(91)90008-g

Cited by 190 publications

(114 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Teixeira et al (2007) also observed an increase in fecal nitrogen excretion of 0.45 g/coffee hull unit added in an experiment with coffee hull under similar conditions. The insoluble nitrogen in neutral detergent, but soluble in acid detergent, is digestible, but it is slowly degraded in the rumen, whereas nitrogen in the form of insoluble nitrogen in acid detergent seems to be resistant and practically indigestible, and it is usually associated to lignin and other compounds of difficult degradation (Van Soest and Mason, 1991;Licitra et al, 1996), which may have contributed to the greater nitrogen excretion in the feces of the animals that received diets with coffee hull. The mean nitrogen value in the feces of 47.5 g/day observed for the diet without coffee hull was very close to the value of 48.6 g/day reported by Teixeira et al (2007).…”

Section: Resultsmentioning

confidence: 99%

Coffee hull in the diet of dairy heifers: nitrogen balance and microbial protein synthesis

Souza¹,

García²,

Cabral³

et al. 2010

R. Bras. Zootec.

View full text Add to dashboard Cite

-It was evaluated nitrogen compounds and microbial protein synthesis in heifers fed diets containing coffee hulls (0.0; 8.75; 17.25; and 26.25% of dry matter) replacing ground corn concentrate at the following levels of coffee hulls in the total diet dry matter: 0.0, 3.5, 7.0 or 10.5%. It was used 24 crossbreed heifers (7/8, 15/16 and 31/32 Holstein-Zebu), which were distributed in a random block design made up accordingly to the weight of the animals. Spot samples of urine were colleted aproximatelly four hours after morning feeding and were used to estimate microbial protein synthesis by using urine purine derivatives. It was not observed effect of coffee hull levels in the diet on total nitrogen intake (160 g/day) and nitrogen excretion in the urine (87.4 g/day). The inclusion of coffee hull in the diet linearly increased nitrogen excretion in feces, as well as nitrogen balance. There was linear reduction in urinary excretion of allantoin, in total purine derivative and absorbed purine, which reduced 0.715, 0.873, and 0.954 mmol/day to each coffee hull unity added to the concentrate, respectively. Coffee hull altered microbial protein synthesis, which reduced in 0.687 g/day to each coffee hull unity added to the concentrate. Reduction in microbial protein synthesis can reduce weight gain in heifers fed coffee hulls.Key Words: agroindustrial residue, creatinine, N-urea, purine derivatives, spot urine Casca de café em dietas para novilhas: balanço de compostos nitrogenados e síntese de proteína microbiana RESUMO -Avaliaram-se o balanço de compostos nitrogenados e a síntese de proteína microbiana (PBmic) em novilhas leiteiras submetidas a dietas contendo casca de café (0,0; 8,75; 17,5 e 26,25% da matéria seca) em substituição ao milho no concentrado, correspondendo aos níveis de 0,0; 3,5; 7,0 e 10,5% da matéria seca da dieta total. Foram utilizadas 24 novilhas mestiças com grau de sangue Holandês variando de 7/8 a 31/32, distribuídas em delineamento em blocos casualizados, formados de acordo com o peso dos animais. Amostras spot de urina foram coletadas aproximadamente 4 horas após a alimentação da manhã e utilizadas para estimar a síntese de PBmic utilizando-se os derivados de purina na urina. Não foi observado efeito dos níveis de casca de café na dieta sobre o consumo de nitrogênio total (160 g/dia) e a excreção de nitrogênio na urina (87,4 g/dia). A inclusão de casca de café na dieta promoveu aumento linear na excreção de nitrogênio nas fezes, bem como alteração do balanço de nitrogênio. Houve redução linear nas excreções urinárias de alantoína, nos derivados de purinas totais e purinas absorvidas, que reduziram 0,715; 0,873; 0,954 mmol/dia a cada unidade de casca de café adicionada no concentrado, respectivamente. A casca de café alterou a síntese de PBmic, que teve redução de 0,687 g/dia a cada unidade de casca de café adicionada ao concentrado. A redução na síntese de proteína microbiana pode diminuir o ganho de peso

show abstract

Section: Resultsmentioning

confidence: 99%

Coffee hull in the diet of dairy heifers: nitrogen balance and microbial protein synthesis

Souza¹,

García²,

Cabral³

et al. 2010

R. Bras. Zootec.

View full text Add to dashboard Cite

show abstract

“…The gross energy (GE) content was determined in an adiabatic calorimeter. The neutral-and acid-detergent fibre (NDF and ADF) and aciddetergent lignin (ADL) analyses were performed by the sequential procedure of Van Soest and Masson (1991) by using the Ankom 200/220 fibre analyser (Ankom, 2000). The NDF was assayed with sodium sulphite and without a-amylase, and both NDF and ADF were expressed without residual ash.…”

Section: Laboratory Analysesmentioning

confidence: 99%

A comparative study of the effect of two-stage olive cake added to alfalfa on digestion and nitrogen losses in sheep and goats

Yáñez-Ruíz

Molina-Alcaide

2007

Animal

View full text Add to dashboard Cite

This work was conducted to evaluate the effect of tannins, contained in a by-product derived from olive oil extraction (two-stage olive cake), on nutrient digestibility, nitrogen (N) losses and liver and kidney functions in goats and wethers. Six Segureñ a wethers and six Granadina goats were fed three experimental diets: alfalfa hay (AH); alfalfa hay and a concentrate (formulated with twostage olive cake, barley and a mineral-vitamin mixture) without (AHCO) or with polyethylene glycol (PEG) addition (AHCOP). The inclusion of two-stage olive cake increased condensed tannins content of the diet and led to a decrease ( P , 0.001) in dry matter, organic matter, neutral-detergent fibre, acid-detergent fibre and crude protein (CP) digestibility. PEG supply increased ( P , 0.001) CP digestibility and N losses in urine and faeces only in wethers. Concentrations of creatinine and alkaline phosphatase activity, measured in the serum of animals, were not modified either by olive cake inclusion or by PEG supply. Results from this work indicate a higher sensitivity of sheep to diets containing condensed tannins, compared with goats, and reveal no toxic effect of tannins from two-stage olive cake at the concentration used in the experimental diets.

show abstract

“…NDF content is an indicative of the amount of forage fiber, with NDF being related to the amount of fiber in the bulk . For Van Soest and Manson (1991), NDF values above 55 to 60% correlate negatively with the consumption of dry mass by the animal. It can be observed that the millet silages studied herein present NDF values within the range recommended not to limit dry matter consumption.…”

Section: Resultsmentioning

confidence: 95%

<b>Agronomic performance and nutritive value of millet silages

Moura

Pires

Jayme

et al. 2017

Acta Sci. Anim. Sci.

View full text Add to dashboard Cite

ABSTRACT. The objective of this study was to assess agronomic characteristics and nutritional values of silages of millet genotypes. Planting was done in randomized blocks, with five replicates per genotype. Green matter yield for genotypes ADR 500 and CMS 01 was higher and similar to each other, with 40.16 and 41.36 t ha (p > 0.05). There was no significant difference for dry matter yield, with the mean being 9.93 t ha (p > 0.05). The silages were similar (p > 0.05) as to pH, Aw and N-NH3/TN, presenting values of 3.92, 0.97 and 7.64%, respectively. There were no significant differences (p > 0.05) concerning the bromatological composition of the silages of the different genotypes, with a mean of 30.74% of dry matter, 10.21% for crude protein and 58.69% for neutral detergent fiber (p > 0.05). The dry matter digestibility mean stood at 59.90%. Based on the nutritional values and digestibility of the millet silages, the five genotypes are suitable for silage production, with potential for the North of Minas Gerais.Keywords: digestibility, dry matter yield, silage.Desempenho agronômico e valor nutritivo das silagens de milheto RESUMO. Objetivou-se com este trabalho avaliar as características agronômicas e o valor nutricional das silagens de genótipos de milheto. O plantio foi realizado em blocos casualizados, com cinco repetições por genótipo. A produção de matéria verde para os genótipos ADR 500 e CMS 01 foram superiores e semelhantes entre si, com 40,16 e 41,36 t ha (p > 0,05). Não houve diferença significativa para a produção de matéria seca, e a média foi de 9,93 t ha (p > 0,05). As silagens mostraram-se semelhantes (p > 0,05) em relação ao pH, Aw e N-NH3/NT, apresentando valores de 3,92; 0,97 e 7,64%, respectivamente. Não foram encontradas diferenças significativas (p > 0,05) em relação à composição bromatológica das silagens dos diferentes genótipos, sendo observados médios de 30,74% de matéria seca; 10,21% para proteína bruta; 58,69% para fibra em detergente neutro e (p > 0,05). A média da digestibilidade da matéria seca foi de 59,90%. Com base no valor nutricional e na digestibilidade das silagens de milheto, os cinco genótipos apresentam-se adequados à produção de silagem com potencial para o norte de Minas Gerais Palavras-chave: digestibilidade, produção de matéria seca, silagem.

show abstract

The influence of the Maillard reaction upon the nutritive value of fibrous feeds

Cited by 190 publications

References 16 publications

Coffee hull in the diet of dairy heifers: nitrogen balance and microbial protein synthesis

Coffee hull in the diet of dairy heifers: nitrogen balance and microbial protein synthesis

A comparative study of the effect of two-stage olive cake added to alfalfa on digestion and nitrogen losses in sheep and goats

<b>Agronomic performance and nutritive value of millet silages

Contact Info

Product

Resources

About