In situ and in vitro evaluation of crude protein degradation and utilisable crude protein content of barley, rye and triticale grains for ruminants

2017 ◽  
Vol 102 (2) ◽  
pp. 452-461 ◽  
Author(s):  
J. Krieg ◽  
N. Seifried ◽  
H. Steingass ◽  
M. Rodehutscord
1980 ◽  
Vol 60 (3) ◽  
pp. 807-811 ◽  
Author(s):  
R. S. FULKERSON

Midas marrowstem kale (Brassica oleracea L.) was grown in different row width associations with United 106 corn (Zea maize L.) in two studies and ensiled in different moisture blends with corn stover in another. Highest dry matter yields were obtained where a single row of kale was grown at 30 cm to the side of a corn row. This combination also provided the lowest moisture content feed and the highest in vitro digestibility and crude protein content. Changing the corn row width had no significant effect upon yield, plant height, in vitro digestibility, kale leaf or corn ear content. Blending kale with corn stover to provide a silage of about 70% moisture increased the digestibility and protein content of the feed and provided a silage that kept well in storage.


2012 ◽  
Vol 175 (3-4) ◽  
pp. 95-105 ◽  
Author(s):  
B. Edmunds ◽  
K.-H. Südekum ◽  
H. Spiekers ◽  
F.J. Schwarz

1992 ◽  
Vol 6 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Douglas J. Doohan ◽  
Gilles Belanger ◽  
Russ R. King ◽  
Jerry A. Ivany

Fluazifop-P, applied in the spring or fall and pronamide, applied in the fall only, reduced quackgrass infestation in established alfalfa and increased the dry matter yield of alfalfa. Herbicides did not improve alfalfa in vitro digestibility or crude protein content. Average residues of fluazifop-P in alfalfa treated with rates of 0.25 or 0.5 kg ai ha–1, were 0.1 mg kg–1when harvested 280 d after application, and 0.06 mg kg–1when harvested 295 d after application. Average residues in alfalfa harvested 41 and 55 d after application were 0.13 mg kg–1and 0.1 mg kg–1, respectively, with a 0.25 kg ha–1treatment and 0.19 mg kg–1and 0.05 mg kg–1, respectively, with a 0.5 kg ha–1treatment.


1971 ◽  
Vol 77 (1) ◽  
pp. 47-52 ◽  
Author(s):  
R. J. Haggar ◽  
M. B. Ahmed

SummaryThe crude protein content and in vitro dry-matter digestibility (I.V.D.) of leaves and stems of Andropogon gayanus, grouped into four different age categories, were measured at weekly intervals during the secondhalf of the 1968 wet season. The crude protein content of all categories of leaf and stem rose to a maximumat ear emergence; significant reductions occurred thereafter, especiallyin the younger categories of leaf and stem. At any point in time the younger leaves and stems contained significantly more crude protein than the older leaves and stems.Although the mean crude protein content of each stem category was significantly lower than the corresponding leaf category, the young, elongating stems had a significantly higher crude protein content than the older, mature leaves at the time of ear emergence.The mean I.V.D. of all leaf and stem categories was highest at the start of the recording period. At ear emergence the I.V.D. of the young elongating stems was at least as high as the mature leaves. After ear emergence the I.V.D. of the stems fell more rapidly than the leaves.The results support the principle of cutting at ear emergence to achieve maximum yields of digestible nutrients.


2021 ◽  
Vol 39 (2) ◽  
pp. 142-149
Author(s):  
O. A. Isah

This study was carried out to assess the chemical contents, in vitro break down, volatile fatty acids, NH3¬-N and methane concentration of urea- molasses feed - block (UMFB) using different binders. Four feed - blocks were formulated as: UMFB A (Cement only), UMFB B (cement + clay), UMFB C (cement + cassava starch), and UMFB D (cassava starch + clay). The feed - blocks were incubated in vitro for 48 hours to assess gas production and other in vitro- ecology parameters. Results of chemical analysis revealed that UMFB C (21.70%), and B (21.65%) had highest (p< 0.05) crude protein content while UMFB D (18.62%) had lowest value. Intermediate crude protein content was recorded for UMFB A (19.58%). However, highest (p<0.05) values of ADF (16.8%) and ADL (15.5%) were recorded for UMFB D. Similar value of ADF (16.70%) and ADL (15.3%) were recorded also for UMFB B. The NDF value of feed - block A (34.6%) was highest (p<0.05) while lowest value of NDF was recorded for UMFB D (32.1%). Production of volatile fatty acids indicated that propionic acid (30.5%), oleic acid (11.3%,) and lactic acid (36.5%) were highest (p<0.05) for UMFB D. Concentration of NH3-N was highest in UMFB B while significant difference (p>0.05) was not observed in the pH and methane values for various UMFB. Highest in vitro digestibility of organic matter was observed in UMFB D. The study showed that the various feed - blocks could serve as a sustainable supplement during dry season and period of scarcity for the ruminants.


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