Determination of Nutritive Value of Wild Mustard, Sinapsis arvensis Harvested at Different Maturity Stages Using In situ and In vitro Measurements

Abstract

The aim of this study was to determine the effect of maturity stage on the nutritive value of wild mustard straw in terms of chemical composition, in situ, in vitro dry matter degradability and calculated ME. The nutritive values of wild mustard, Sinapsis arvensis hays harvested at three stages were evaluated by chemical composition, in vitro gas production and in situ dry matter degradation methods. Gas production or dry matter (DM) degradation were determined at 0, 3, 6, 12, 24, 48, 72 and 96 h and their kinetics were described using the equation p = a+b(1-e -ct ). Maturity had a significant effect on both the chemical composition and degradability of wild mustard. Neutral detergent fibre (NDF) and acid detergent fibre (ADF) (p<0.001) increased with increasing maturity whereas the crude protein (CP) (p<0.001) decreased. The gas produced after 96 h incubation ranged between 64.7 and 81.5 ml per 0.200 g of dry matter. The gas production (ml) at all incubation times and estimated parameters decreased with increasing maturity of wild mustard. The gas production at all incubation times and estimated parameters (a, b (a+b), metabolizable energy (ME) and organic matter digestibility (OMD)) were negatively correlated with NDF and ADF. The DM disappearance after 96 h incubation ranged between 50.8 and 76.1%. The in situ DM disappearance at all incubation times and estimated parameters decreased with increasing maturity of wild mustard. The in situ dry matter disappearance at all incubation times and some estimated parameters (c, a, b and effective dry matter degradability (EDMD)) were negatively correlated with NDF and ADF but positively correlated with CP. The nutritive value of wild mustard continually changed as it matured. Wild mustard, harvested at the proper stage of maturity offers considerable potential as a high quality forage for ruminants during the winter feeding period. The present study showed that if higher quality forage is an objective, wild mustard should be harvested at the early flowering stage.

Some Quality Traits of Different Wild Plants

“…In addition, this plant is a serious weed of cultivated land (Anonymous, 2009b). Besides, it can be use in animal nutrition as forage by grazing or collected for winter use in Turkey (Kamalak et al, 2005). Our findings about crude protein and crude ash contents are higher, but ADF and NDF values in Sinapsis arvensis are lower than the finding of Kamalak et al (2005) These species have importance as secondarily alternative forage crops in rangelands, especially in degenerated rangelands.…”

“…There are some literatures about our studied plants for some quality properties. Kamalak et al (2005) have stated that Sinapsis arvensis in early, mid and late flowering stage; for dry matter, crude protein, ADF, NDF and crude ash values as 95. 9-96.5%, 7.7-13.2%, 56.4-65.8%, 66.5-74.1% and 5.6-8.6%, respectively.…”

Determination of Potential Nutritive Value of Exotic Tree Leaves in Turkey

“…Chemical compositions, in combination with in vitro gas production, OMD and ME content were widely used to determine potential nutritive values of forages [9][10][11][12] . Although the most of the native trees and shrubs were evaluated in terms of chemical composition, in vitro and in situ technique [13][14][15] there is limited information on the chemical composition and nutritive value of exotic tree leaves in Turkey.…”

Üç Farklı Dönemde Hasat Edilen Trigonella kotschi Otunun Potansiyel Besleme Değerinin Belirlenmesi

“…Sheep and goat preferred to consume, Trigonella kotschi hay. Although the nutritive value of many types of forages obtained at different harvest maturity is well established [1][2][3][4] there is limited information about the nutritive value of Trigonella kotschi Fenzl hay obtained at different maturity stages. However there is also no information on macro and micro mineral contents of Trigonella kotschi Fenzl hay obtained at different maturity stages.…”

“…Recently some researches have used the in vitro gas production technique for evaluation of feedstuffs and determination of essential oil on microbial fermentation parameters [6][7][8][9] . Chemical composition, in combination with in vitro gas production, OMD and ME content were widely used to determine the potential nutritive value of forages which are previously limited or uninvestigated [1][2][3][4] . The objective of this experiment was to determine the potential nutritive value of Trigonella kotschi Fenzl hay harvested at three maturity stages using chemical composition and in vitro gas production technique.…”