Effect of type of fiber on the rate of passage and on the contribution of soft feces to nutrient intake of finishing rabbits.

Abstract

One hundred thirty New Zealand White x California rabbits were used to study the influence of the source of dietary fiber on several digestive criteria. Five diets were formulated to provide 10% crude fiber (CF) on a DM basis. Sixty percent of this dietary fiber was supplied by alfalfa hay, citrus pulp, beet pulp, grape marc, or rice hulls in the diets. Weights of cecal contents, cecal ammonia concentration, and molar proportion of acetic acid in diets including pulps were higher and cecal levels of DM, CP, and molar proportion of butyric acid were lower than those of the alfalfa diet. Cecal ammonia, VFA, and CF concentrations of the grape marc diet were the lowest of all the diets studied; cecal CF level and molar proportion of acetic acid were significantly higher and CP level and molar proportion of butyric acid were lower in rice hull than in alfalfa diets. Diet had no influence on daily soft feces excretion (10 g DM/d), but N contribution of soft feces to N intake was higher in the diet with citrus pulp (18.7%) than in the other diets (12%). Mean retention time (R) was measured using fuchsin-stained feed and was found to be higher (21.3 h) in the rice hull diet and lower (9.3 h) in the grape marc diet than in the other diets. When coprophagy was prevented, R decreased by 0 to 7 h. In conclusion, the use of byproducts to substitute for traditional sources of fiber in rabbit diets influenced the retention time of the digesta in some segments of the gut and thus altered several digestive criteria.(ABSTRACT TRUNCATED AT 250 WORDS)

Effects of type and level of fibre on digestive physiology and performance in reproducing and growing rabbits.

“…A lower feed intake during lactation also had a slight carry over effect on fattening intake, which might be a consequence of a lower weaning weight and/or a higher accumulation of digesta in the caecum at 42 days of age. Previous works have also shown that dietary supplementation with soluble fibre from citrus or beet pulps decreased intake (Fraga et al, 1991;García et al, 1993;Carabaño et al, 1997;Falcao-e-Cunha et al, 2004). The effect was more important when soluble fibre replaced starch and was then associated to an increase of total dietary fibre content.…”

“…However, it also increased total mean retention time and reduced feed intake (Pairet et al, 1986;Fraga et al 1991, García et al, 1993, Carabaño et al, 1997Falcao-e-Cunha et al, 2004). The opposite effect has been observed with the dietary inclusion of insoluble and low fermentable fibre (Fraga et al, 1991;Motta-Ferreira et al, 1996;García et al, 2000) or by increasing ADL content Nicodemus et al, 1999;García et al 2002a). Accordingly, a balance between soluble and insoluble fibre seems to be advisable to maximize fattening performance.…”

“…Otherwise, the inclusion of soluble and fermentable fibre in the diet decreased the caecal pH and increased the total concentration of volatile fatty acids (Fraga et al, 1991, García et al, 1993Carabaño et al, 1997), which might help to control pathogenic flora and to prevent digestive disorders . However, it also increased total mean retention time and reduced feed intake (Pairet et al, 1986;Fraga et al 1991, García et al, 1993, Carabaño et al, 1997Falcao-e-Cunha et al, 2004).…”

Digestibilidade, cecotrofia, desempenho e rendimento de carcaça de coelhos em crescimento alimentados com rações contendo óleo vegetal ou gordura animal

“…Também não houve efeito da inclusão de diferentes níveis de OS e GA sobre a CCMS, porém, os valores aproximaram-se dos encontrados por Ferreira (1990), Fraga et al (1991) e Santiago (2001.…”

Pengaruh Penggunaan Sekam Padi Dalam Ransum Berbasis Limbah Pangan Hotel Kering Terhadap Pertumbuhan Dan Karkas Babi

“…Penelitian penggunaan sekam padi dalam ransum itik dilaporkan oleh Yadnya dan Sukmawati (2006), yang mendapatkan bahwa penggantian 50% dedak dengan sekam padi yang disuplementasi 0,2% starbio menurunkan pertambahan berat badan dan efisiensi penggunaan ransum itik. Hasil penelitian Fraga et al (1991) mendapatkan bahwa penggunaan 11% sekam padi dalam ransum kelinci menghasilkan konsumsi bahan kering yang lebih rendah daripada penggunaan 27% rumput alfalfa dan 25% ampas anggur. Penelitian bertujuan untuk mengetahui pengaruh penggunaan sekam padi sebagai sumber serat dalam ransum berbasis limbah pangan hotel kering terhadap pertumbuhan dan karakteristik karkas ternak babi.…”