Functional Development of Rumen Mucosa. I. Absorptive Ability

Sutton, John; McGilliard, A.D.; Jacobson, N. L.

doi:10.3168/jds.s0022-0302(63)89068-2

Cited by 68 publications

(54 citation statements)

References 26 publications

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“…It is well known that the absorption of VFA in the rumen occurs faster from acid than from alkaline contents [Danielli et al, 1945;Pfander and Phillipson, 1953;Sutton et al, 1963;Aafjes, 1967]. Danielli et al [1945] assumed from their measurements that in an alkaline environment the absorption of VFA takes place as a passage of anions through water-filled pores; but at a pH of 5-8 already part is absorbed through the lipid layers.…”

Section: -28mentioning

confidence: 99%

Absorption of Volatile Fatty Acids, Tritiated Water and Antipyrine From the Abomasum of Goats

1968

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In conscious goats the abomasum was isolated temporarily from the rest of the gastro-intestinal tract by means of balloons, or a double by-pass or a snare around the pylorus. Abomasal contents, rumen fluid or a saline solution were given into the abomasum. Altogether forty experiments were done on four goats.The absorption of acetic acid, propionic acid, butyric acid, tritiated water (HTO) and antipyrine (AP) from the abomasum was measured. For comparison of the absorption rates, the data were given as clearance of the abomasal fluid and as water (liffusion.At a mean abomasal fluid volume of 606 ± 201 ml., 513 ± 169 ml. water diffused out of the abomasum through the abomasal mucosa per hour. The antipyrine clearance was 214 ± 84 ml./hr. The volatile fatty acids (VFA) were absorbed considerably faster at acid than at neutral pH values; at pH 5-2 -5-6 the VFA clearance was only 320 ml./hr.: at pH 3-5-4-0, however, it increased to 1130 ml./hr.The olive oil: water partition coefficients for acetic, propionic and butyric acid were measured in the pH range of 3-5 -6-2. With decreasing pH values the degree of dissociation of the acids decreases and the lipid solubility increases considerably.The permeability of the abomasal and ruminal mucosa for VFA also increases at lower pH values, but not as much as the olive oil: water partition coefficients of the acids.Absorption of VFA, HTO and AP from the abomasum is discussed in relation to the absorption of these substances from the rumen and the human stomach.

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Section: -28mentioning

confidence: 99%

Absorption of Volatile Fatty Acids, Tritiated Water and Antipyrine From the Abomasum of Goats

1968

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“…In contrast, the net VFA production per kilogram of DM calculated from Markantonatos et al (2009;2.6 and 2.9 mol/kg of DM for the dry period and lactation, respectively) is substantially lower than in our study and the studies of and Siciliano-Jones and Murphy (1989). Based on previous results from buffer incubation studies (Sutton et al, 1963;Thorlacius and Lodge, 1973;, the lower fractional absorption rate of Bu compared with Ac observed in the present experiment using the IDT was not expected. The use of a pulse-dose, which simultaneously enriches Ac, Pr, and Bu and does not allow for quantification of the C fluxes between Ac, Pr, and Bu, may explain the low fractional absorption rate of Bu.…”

Section: Vfa Productioncontrasting

confidence: 87%

“…Simultaneously with the development of the rumen papillae, the capacity for absorption of VFA develops (Sutton et al, 1963). As in calves, changes in the plane of nutrition (changes in daily intake of FOM) have been shown to affect rumen papillae dimensions in adult cows.…”

Section: Morphological Adaptation Of the Rumenmentioning

confidence: 99%

“…The proliferation of rumen papillae in young ruminants is triggered by the consumption of solid feed (Tamate et al, 1962;Sutton et al, 1963;, and thus associated with the intake of rumen fermentable organic matter (FOM) and its associated production of VFA. Furthermore, and Liebich et al (1987) reported a positive relationship between the plane of nutrition and papilla surface area in the rumen.…”

Section: Introductionmentioning

confidence: 99%

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Aspects of rumen adaptation in dairy cattle : morphological, functional, and gene expression changes of the rumen papillae and changes of the rumen microbiota during the transition period

Dieho¹

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“…Em animais da subordem Ruminantia, as câmaras fermentativas pré-estomacais são geralmente forradas por um epitélio típico, formado por papilas. Essas estruturas especializadas são afetadas pela dieta e manejo alimentar (Tamate et al 1962, Sutton et al 1963a, 1963b, Lane & Jesse 1997, Baldwin 2000. Scocco et al (2007) demonstraram o efeito da sazonalidade anual sobre a qualidade do alimento e desta sobre a morfologia das papilas ruminais.…”

Section: Introductionunclassified

Morfologia dos pré-estômagos e de papilas ruminais de cordeiras Santa Inês em crescimento submetidas a dois planos nutricionais

et al. 2014

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Para se avaliar o efeito do plano nutricional e crescimento sobre a massa dos pré-estômagos, morfologia e quantificação de papilas ruminais, trinta e seis cordeiras da raça Santa Inês foram submetidas a dois planos nutricionais (ad libitum ou restrito) sendo abatidas em diferentes pesos vivo (20, 30 ou 40 kg de peso vivo), em um delineamento inteiramente casualizado balanceado em arranjo fatorial 2x3. Feito o abate, as vísceras foram pesadas livres de seu conteúdo em seguida mediu-se o volume de repleção do rúmen e retículo. Amostras do tecido ruminal oriundas dos sacos cranial e ventral foram coletadas para posteriormente serem realizadas com auxílio de lupa estereoscópica as medidas morfométricas das papilas ruminais, altura, largura da base, área, papilas por cm² e área absortiva por cm². Os resultados obtidos foram submetidos a análise de variância e as médias resultantes por tratamento foram comparadas por meio de teste de Student Newmann Keuls. Os diferentes planos nutricionais não influenciaram a massa das vísceras rúmen, retículo e omaso (P>0,05), no entanto, observou-se crescimento dessas vísceras em função do aumento do peso ao abate. O volume dessas vísceras foi afetado pelo peso ao abate, e observou-se menores volumes para animais com alimentação ad libitum (P<0,10). O número de papilas por cm² foi reduzido com o aumento do peso ao abate, sendo que altura e área foram aumentadas quando em pesos maiores. O plano nutricional afetou apenas a área e altura das papilas ruminais oriundas do saco cranial. A área absortiva não foi afetada pelos tratamentos. Plano nutricional e diferentes pesos vivos influenciam a morfologia dos pré-estômagos de cordeiras da raça Santa Inês.

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Functional Development of Rumen Mucosa. I. Absorptive Ability

Cited by 68 publications

References 26 publications

Absorption of Volatile Fatty Acids, Tritiated Water and Antipyrine From the Abomasum of Goats

Absorption of Volatile Fatty Acids, Tritiated Water and Antipyrine From the Abomasum of Goats

Aspects of rumen adaptation in dairy cattle : morphological, functional, and gene expression changes of the rumen papillae and changes of the rumen microbiota during the transition period

Morfologia dos pré-estômagos e de papilas ruminais de cordeiras Santa Inês em crescimento submetidas a dois planos nutricionais

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