Fibre digestion and utilization in goats

Lu, C.D.; Kawas, Jorge R.; Mahgoub, O.

doi:10.1016/j.smallrumres.2005.06.035

Cited by 102 publications

(97 citation statements)

References 24 publications

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“…Lu et al (2008) have shown that the optimum fibre content influences the cellulolytic activity in the rumen and enhances saliva production. Furthermore, the highest dose of boric acid supplementation (400 mg · kg −1 diet) increased iso-butyrate and iso-valerate content originated from dietary proteins or microbial proteins recycling by deamination and decarboxylation of some amino acids (Miltko et al, 2016) and tended to decrease ammonia concentration in comparison with control group 3 h after feeding.…”

Section: Discussionmentioning

confidence: 99%

Rumen microbial fermentation, protozoan abundance and boron availability in yearling rams fed diets with different boron concentrations

Sizmaz¹,

Köksal²

2017

J. Anim. Feed Sci.

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Section: Discussionmentioning

confidence: 99%

Rumen microbial fermentation, protozoan abundance and boron availability in yearling rams fed diets with different boron concentrations

Sizmaz¹,

Köksal²

2017

J. Anim. Feed Sci.

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“…In fact, dietary rice straw for goats has not been defined by the current nutrition guidelines (Lu et al, 2005). However, dietary rice straw is vital in the digestion of nutrients mediated through mastication and microbial fermentation in the rumen.…”

Section: Introductionmentioning

confidence: 99%

Effect of rice straw in the diet for growing goats on site and extent of digestion and N balance

Zhao¹,

Jiang²,

Sun³

et al. 2007

J. Anim. Feed Sci.

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Effect of reducing dietary rice straw on N balance, site and extent of digestion, and efficiency of microbial protein synthesis were evaluated in this trial. Four Liuyang black goats (average body weight 19.3±2.1 kg), fitted with the ruminal, proximal duodenal and terminal ileal cannulas were used in a 4×4 Latin square design. Goats were assigned to four dietary treatments designed by increasing maize grain inclusion at the expense of rice straw: 1. 40% forage (20% maize stover and 20% rice straw, HR); 2. 35% forage (20% maize stover and 15% rice straw, MR1); 3. 30% forage (20% maize stover and 10% rice straw, MR2) and 4. 25% forage (20% maize stover and 5% rice straw, LR). Experimental diets were similar in chemical composition except for dietary NDF and metabolizable energy content. The amount of diet offered to each goat was restricted to 85% of its ad libitum intake to maintain no orts during the whole experimental period. There were no differences in DMI as a result of restricting intake. Totaltract digestibility of OM (P<0.01), N (P<0.01) and NDF (P<0.05) increased with reducing dietary rice straw. Retained N increased from 12.04% for HR to 21.62% for LR (P<0.01). Efficiency of microbial protein synthesis was not affected by dietary rice straw (P>0.05). When expressed as a percentage of N intake, ruminal N disappearance was not affected (P>0.05) by treatments. The true ruminal OM, apparent ruminal OM and ruminal NDF disappearance increased (P<0.01) with reducing dietary rice straw. There were no differences (P>0.05) in small intestinal digestibility of OM and N among the treatments. N BALANCE IN GOATS FED RICE STRAWOur data indicated that reducing dietary rice straw from 40 to 25% could improve utilization of nutrients by growing goats.

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“…In this study, the concentration of energy in the concentrate of the treated groups (65, 75 and 85% TDN) ( Table 1) had no influence on fat percentage, but Lu, Kawas and Mahgoub (2005) and MorandFehr, Fedele, Decandia and Frileux (2007) state that the fat content of goat milk is not related only to the dietary fiber content, but also the dietary fiber effectiveness, besides the energy intake by the goats and the production of volatile fatty acids in the rumen, as mentioned above. It was verified that the supply of concentrate with different TDN contents did not cause changes in the fat content of milk from supplemented goats and neither did the lactation phase or the combination of these factors (Table 3).…”

Section: Discussionmentioning

confidence: 58%

<b>Physical and chemical characteristics of milk from goats supplemented with different levels of total digestible nutrients in the dry period

Nascimento

Júnior

et al. 2017

Acta Sci. Anim. Sci.

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ABSTRACT. We evaluated the physical and chemical characteristics of raw milk from goats supplemented with levels of Total Digestible Nutrients (TDN) in the dry period. Samples from 20 goats were divided into 4 groups, 3 groups received 400g concentrate per animal with different levels of TDN (65, 75 and 85%), and the control group (without concentrate). Four samples of milk were used for each animal, in four sampling periods, which were subjected to physical and chemical analysis. There was no significant difference between the treatments for the parameters of acidity and fat. The diet without concentrate presented higher value for the cryoscopic index. Mean values of the four treatments were within the range set by the Brazilian legislation for all parameters evaluated. The use of concentrate, containing 85% TDN in goat supplementation, was favored the physical and chemical characteristics of the milk during the dry period.Keywords: concentrate, legislation, raw caprine milk.Características físico-químicas do leite de cabras suplementadas com diferentes teores de nutrientes digestíveis totais durante o período seco do ano RESUMO. Este trabalho teve por objetivo avaliar as características físico-químicas do leite de cabras suplementadas com teores de Nutrientes Digestíveis Totais (NDT) no período seco do ano. Foram utilizadas amostras de leite de 20 cabras as quais foram divididas em quatro grupos, sendo que três grupos receberam suplementação de 400 g de concentrado por animal com diferentes teores de NDT (65, 75 ou 85%) e o grupo controle que não recebeu concentrado. Foram utilizadas quatro amostras de leite para cada animal, em quatros períodos de coleta, as quais foram submetidas à análise físico-química de acidez titulável, crioscopia e gordura. Não houve diferença entre os tratamentos para os parâmetros de acidez e gordura. As amostras de leite dos animais que receberam a dieta sem concentrado apresentaram maior valor para o índice crioscópico. As médias das amostras dos quatro tratamentos estavam dentro dos parâmetros fixados pela legislação brasileira para todos os parâmetros avaliados. A utilização de concentrado contendo teor de 85% de NDT na suplementação de cabras favoreceu as características físico-químicas do leite durante o período seco.Palavras-chave: concentrado, legislação, leite cru caprino.

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Fibre digestion and utilization in goats

Cited by 102 publications

References 24 publications

Rumen microbial fermentation, protozoan abundance and boron availability in yearling rams fed diets with different boron concentrations

Rumen microbial fermentation, protozoan abundance and boron availability in yearling rams fed diets with different boron concentrations

Effect of rice straw in the diet for growing goats on site and extent of digestion and N balance

<b>Physical and chemical characteristics of milk from goats supplemented with different levels of total digestible nutrients in the dry period

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