Showing papers in "Animal Feed Science and Technology in 1990"

TL;DR: The N fraction in diets containing acacias was not nutritionally uniform because of the influence of polyphenols on protein digestion and metabolism, and the N balance was positive for sheep fed all diets except A. cyanophylla, indicating higher excretion of microbial and endogenous N in the faeces.

TL;DR: The observed deleterious effects suggest the inadequacy of defence against a high quantity of dietary tannin, and treatment with polyethylene glycol-4000 seems viable in reducing the deleteriously effects of tannins in top feed, however its economical field application remains to be elucidated.

TL;DR: It is shown that when the temperature of the pellets reaches ∼ 80°C, the concentration of absorbable P can be decreased substantially in feeds containing a high phytase activity, and the type of diet and the conditions during pelleting are therefore decisive in determining P and Ca absorbability.

TL;DR: This paper is an attempt to illustrate the biochemistry and the metabolism of rumen protozoa, controlled by phylogenetic factors, geographical distribution, feeding habits and physiological status of the host, by competition between microorganisms and by the diet.

TL;DR: There seems to be little correlation between residual activity of ANF in heat-treated beans and in vivo protein nutritional value, and more detailed information is required on residual ANF activity, based on functional ANF assays in relation to target animals.

TL;DR: Sheep not only spend longer eating and ruminating kg −1 DM than cattle, but also react differently according to the quality of the feed, and influence of physiological stage seems to depend on the nature and level of the ration fed.

TL;DR: Progress in plant breeding and technological processing indicated a promising future for the utilisation of low-glucosinolate RSM in pig feeding, as addition of lysine improved growth performance.

TL;DR: The results of a study into the use of a variety of laboratory methods for the prediction of organic matter digestibility of grass silages measured in vivo are reported in this paper, where the best prediction of a blind test population of silages (n = 48) was obtained by NIR using a multiple linear regression involving eight terms, provided that more than five terms were used in the multiple regression equation (R2 = 0.025 for an eight-term equation).

TL;DR: The chemical composition of rice bran from several rice cultivars, grown in Australia in different years, was examined and the amino-acid profiles showed relatively high concentrations of threonine and a good balance of other essential amino acids.

TL;DR: The varying ability of the fodder tree leaves to improve intake and digestion of guinea grass hay is discussed, particularly in relation to condensed tannin content.

TL;DR: Dietary preference and degradability of forage on a semiarid thornbush savannah by indigenous ruminants, camels and donkeys was studied by direct observation and the dietary overlap between animal species increased during the dry season.

TL;DR: Seasonal and genetic variation in the potential feeding value of lentil straw, a regionally important sheep feed, was measured in two seasons on eleven diverse macrosperma lentil selections under rainfed conditions in north Syria indicating that variation in straw quality is largely due to differences in the partition of dry matter between plant parts.

TL;DR: It appeared from these experiments that about 200 g kg−1 DFRB may be approaching maximum inclusion level for rats and pigs, since wheat bran with higher neutral detergent fibre (NDF) consistently gave better growth when used at similar levels to rice bran.

TL;DR: A comparison of the TIA of samples of the variety Finale originating from different fields showed that growth conditions influenced the pea TIA, and the influence of trypsin inhibitors on the apparent digestibility of crude protein was discussed.

TL;DR: It was concluded on the basis of the liveweight gain response that tagasaste had a feeding value similar to other conserved forages, but less than that of intensively managed temperate pastures.

TL;DR: An estimation of SOH fatty acid kinetics in the rumen seemed to indicate that the variation of rumen content kinetics during the adaptation period to SOH favoured a decrease by 25% in the concentration of Soh fatty acids in theRumen.

TL;DR: The LAB were apparently more effective than formic acid when used to preserve silage; i.e. the former treatment led to a significantly lower pH, higher amounts of organic acids and less growth of moulds on the surface of the bales.

TL;DR: In this paper, the relationship between gross energy (GE) and metabolisable energy (ME) content and a range of laboratory measurements have been developed for 173 samples of spring-grown herbage, including three in vitro measures of digestible organic matter content of the dry matter (DOMD), one using rumen fluid, one based on neutral detergent fibre (NDF)-cellulase and one using pepsin-cellulases, together with the measurement of several cell-wall fractions.

TL;DR: Substantial variations existed among fungal isolates in their ability to degrade and weaken fiber, and future work to enhance lignocellulose utilization should take into account such variations.

TL;DR: In this article, the effect of steam flaking and extrusion of peas (Pisum sativum) on ruminal fermentation, and starch, nitrogen and amino acid flow to the duodenum was investigated.

TL;DR: In this paper, the effect of 144 different treatment conditions (NH3 level: 0, 15, 30 and 45 g kg−1 dry matter (DM); moisture content: 120, 300 and 450 g kg −1; temperature: 20, 40, 60 and 80°C; duration: 7, 14 and 28 days) on nitrogen (N), neutral detergent fibre (NDF), acid detergent fiber (ADF) and lignin content and the rumen DM degradability of wheat straw was examined in a 4 × 3 × 4 ×3 factorial experiment

TL;DR: Although the proximate composition of dry leucaena leaf suggests it could make a useful contribution to intensive rabbit production in the tropics, these results indicate that its use would be uneconomic in most circumstances.

TL;DR: The results indicated that the proportions of morphological fractions in wheat straws markedly affected their nutritive characteristics; straws with more leaf material ranked higher on the basis of commonly used nutritive indices.

TL;DR: The results indicate the significance of rumen protozoa in hemicellulose digestion and the need for an adequate supply of non-protein nitrogen when animals are defaunated and receive low soluble protein is discussed.

TL;DR: The results supported in vivo observations that the extents of digestion of β-linked glucose and arabinose were significantly improved when fish-meal replaced urea as the main nitrogen supplement and efficiency of microbial protein synthesis was unaffected by type of rumen degradable nitrogen source.

TL;DR: In this paper, the authors compared the nutritional value of wheat, rye, triticale and wheat straws in sacco with ammoniation with urea for chemical composition and dry matter loss (DML).

TL;DR: Results showed that potent additives were not very selective in their influence on the different nitrogen transactions in the rumen in vitro, and the efficiency of microbial growth was lowered with Novobiocin, Bacitracin, Terramycin, Avoparcin, ionophores and deaminase inhibitor.

TL;DR: In this paper, the relationship between organic matter (OM) digestibility and digestible organic matter content of the dry matter (DOMD) in vivo and a range of laboratory measurements have been developed for 173 samples of spring-grown herbage.