Influência do tempo de incubação e do tamanho de partículas sobre os teores de compostos indigestíveis em alimentos e fezes bovinas obtidos por procedimentos in situ

Casali, André Oliveira; Detmann, Edênio; Filho, Sebastião de Campos Valadares; Pereira, José Carlos; Henriques, Lara Toledo; Freitas, Samuel; Paulino, Mário Fonseca

doi:10.1590/s1516-35982008000200021

Cited by 449 publications

(288 citation statements)

References 16 publications

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“…Afterwards, the bags were incubated for 240 h (Casali et al, 2008) in the rumen of a crossbred cow (Holstein × Gyr) fed a diet containing, on a DM basis, 70% of corn silage and 30% concentrate (composed of cornmeal, soybean meal and a mineral mixture). After the incubation period, the bags were removed and washed in running water until complete clearing.…”

Section: Methodsmentioning

confidence: 99%

Soybean in different forms of processing in the feeding of crossbred cows on brachiaria grass pastures

et al. 2015

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-The objective was to evaluate intake and digestibility of nutrients, as well as milk production and composition of the milk from F1 Holstein × Gyr cows kept on pasture, supplemented with sugarcane and concentrate (28% CP). Five cows with 150±14 lactation days and average milk production of 7.1±2.1 kg/day were distributed in a 5 × 5 Latin square design. The treatments were: soybean meal-based concentrate; soy bean-based concentrate; ground soybean-based concentrate; roasted soybean-based concentrate; and ground, roasted soybean-based concentrate. Dry matter (DM), organic matter, crude protein (CP), neutral detergent fiber (NDF), total carbohydrates and total digestible nutrients intakes were not affected by the diet, but ether extract intake was higher for the animals fed soy bean-based diets than those fed soybean meal. The digestibility of DM, NDF and CP did not differ. The corrected milk yield differed between treatments; animals on the treatment with soy bean-based concentrate had the lowest production in relation to the others, which did not differ from each other. There was no difference between treatments for milk composition. Thus, soybean meal can be replaced by ground soy beans or roasted soy beans (ground or whole) in diets for low-yield cows reared on Brachiaria decumbens pastures with no harm to milk production or composition. Therefore, the use of these alternative raw materials is recommended whenever their inclusion represents lower feeding costs.

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Section: Methodsmentioning

confidence: 99%

Soybean in different forms of processing in the feeding of crossbred cows on brachiaria grass pastures

et al. 2015

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“…Kalscheur et al (2006) MS = matéria seca, MO = matéria orgânica, PB = proteína bruta, EE = extrato etéreo, FDN = fibra em detergente neutro, FDNcp = fibra em detergente neutro corrigida para cinzas e proteína, CNF = carboidratos não fibrosos. Observou-se aumento (P<0,05) linear na digestibilidade aparente da PB, o que pode estar relacionado com o efeito da diluição do nitrogênio metabólico fecal (Broderick, 2003;Pereira et al, 2005a;Colmenero e Broderick, 2006b As reduções nos consumos de CT e de CNF podem reduzir a produção de propionato no rúmen, bem como o fluxo de amido para o intestino delgado. O propionato é o principal precursor da glicose no fígado e tem associação com o fluxo de glicose para a glândula mamária.…”

Section: Resultsunclassified

“…Para estimativa da excreção de MS fecal, utilizou-se fibra em detergente neutro indigestível (FDNi) como indicador interno, obtida após 240 horas de incubação ruminal dos alimentos, das sobras e das fezes, utilizando-se sacos de tecido não tecido (TNT) (100g/m 2 ), como descrito por Casali et al (2008). Após o período de incubação, os saquinhos foram lavados em água corrente até esta apresentar-se totalmente límpida.…”

Section: Methodsunclassified

Teores proteicos em dietas para vacas Holandesas leiteiras em confinamento

Paiva

Lana

Oliveira

et al. 2013

Arq. Bras. Med. Vet. Zootec.

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 RESUMOAvaliou-se o efeito de dietas com níveis de proteína bruta -PB (10, 12, 14 e 16% na matéria seca -MS) em vacas Holandesas mestiças com produção de leite médio (PL) de 13kg/dia. Utilizou-se silagem de milho como volumoso, e a relação volumoso:concentrado foi 65.09, 67.23, 78.35 and 67.92 at levels of 15.39, 15.22, 12.62 and 15.68% CP, respectively. The MP, without and with a correction to 3.5% fat, body weight variation and composition of the milk increased linearly, except for lactose which had no effect. The level of 14% CP in the diet is more suitable for feeding cows with average milk production of 13kg/day.

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“…The iADF was estimated in samples of offered feed, refusals, and feces by an in situ digestibility procedure. The iADF was obtained after 264 h of incubation (Casali et al, 2008) in F57 filters (ANKOM ® Technology Corporation) and then analyzed for ADF.…”

Section: Methodsmentioning

confidence: 99%

Use of dried brewers' grains instead of soybean meal to feed lactating cows

et al. 2017

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-The objective of this study was to determine the optimal level of dried brewers' grains (DBG) to replace soybean meal in diets for lactating Holstein cows. Five cows, around 88±28 days in milk, were distributed in a 5 × 5 Latin square design and fed diets containing different levels of DBG (0, 25, 50, 75, and 100%). The forage:concentrate ratio of the diet was 50:50. Feed intake, dry matter, nutrient digestibility, microbial synthesis, milk production and composition, and the economic viability of the diets were evaluated. There was reduction in dry matter intake and, consequently, in crude protein and non-fiber carbohydrates with increased levels of DBG. This occurred due to physical limitation of rumen caused by increased neutral detergent fiber intake. Ether extract intake also increased with levels of DBG due to higher concentrations of this nutrient in the diet. Apparent dry matter, organic matter, ether extract, and neutral detergent fiber digestibility increased with replacement of soybean meal by DBG. Milk production showed a quadratic effect and the levels of fat, protein, and total solids reduced linearly. Each 1% of soybean meal replaced by DBG in concentrate led to a reduction of 0.04, 0.02, and 0.06 g kg -1 of milk fat, protein, and total solids, respectively. The milk production efficiency increased linearly and the microbial synthesis efficiency was not affected. The economic return increased along with the DBG levels. Thus, DBG levels replacing up to 75% of soybean meal can be used to feed lactating cows, since it provides improvements in digestibility, milk production efficiency, and economic return without affecting microbial efficiency.Key Words: by-product, digestibility, intake, milk composition, protein, purine Revista Brasileira de Zootecnia

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Influência do tempo de incubação e do tamanho de partículas sobre os teores de compostos indigestíveis em alimentos e fezes bovinas obtidos por procedimentos in situ

Cited by 449 publications

References 16 publications

Soybean in different forms of processing in the feeding of crossbred cows on brachiaria grass pastures

Soybean in different forms of processing in the feeding of crossbred cows on brachiaria grass pastures

Teores proteicos em dietas para vacas Holandesas leiteiras em confinamento

Use of dried brewers' grains instead of soybean meal to feed lactating cows

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