Livestock Research for Rural Development | Volume 34, Number 12, 2022 |
LRRD is fully OPEN ACCESS, with no publication charges, on the principle that research findings related to sustainability of farming systems should be freely available in the public domain.
Papers may be copied and reprinted freely.
Important Announcement We advise all authors planning to submit papers to LRRD that we will no longer publish papers based on research in which the welfare of animals was compromised by surgical modification or the use of methods that generate stress and discomfort. These include procedures that modify the digestive track that were mostly developed to facilitate measurements of digesta flow in both ruminant and monogastric animals. We believe that these procedures are no longer relevant in view of developments in in vitro systems for which sources of microorganisms can be obtained from slaughtered animals.We trust that readers of LRRD will agree with us since the welfare of animals is of primary concern and should not be jeopardized by surgical or management procedures which cause serious discomfort to the host animals. |
The future requirements of society for food and energy can best be met from integrated small to medium family farm systems in which:
· most resources are produced locally,
· the direct and indirect use of solar energy is maximized,
· all wastes are recycled;
· the carbon footprint is negative;
· there are overall environmental and social benefits.
To promote local research on the:
(i) use of local resources for live stock production in ways that are non-competitive with human needs;
(ii) development of systems for producing renewable energy by:
a. biodigestion of animal and human organic wastes;
b. gasification of dry fibrous residues from crops grown primarily as food/feed for humans and live stock;
c. increasing use of draft animal power
(iii) promotion of indigenous live stock breeds that have high reproductive rates and adaptation to use of local feed resources and local climatic conditions;
(iv) regeneration of soil fertility through promotion of tree crops and recycling of organic matter
(v) development of emerging markets for ecosystem services, such as carbon sequestration and nutrient sequestration.
(vi) promotion of “farmer“ markets for food produced in environmentally friendly and socially just, family-oriented small-scale farming systems
(vii) improving the efficiency of use of water
(viii) recycling of wastes
Papers should be sent by E-mail to the Senior Editor. reg.preston@gmail.com. If acknowledgement is not received within two weeks then authors should send a reminder to the Senior Editor with copy to preston@lrrd.org.
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Lack of respect of these instructions may lead to the rejection of the paper
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eg:
234.21 becomes
234
1.2367 becomes 1.24
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eg: R2 = 0.677 becomes R2 =
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- when comparing treatments in a balanced design do not give SE of each mean. SEM of means is more
appropriate with the exact probability as given by the statistics program.
The SE of each mean is appropriate when nunbers in each mean are not equal.
Avoid use of the term "significant". If "A" is greater than "B" then p <0.05 is understood and the exact level of probability will be in the table. The accepted symbol for probabiliity is p. P is for Phosphorus. Note: p=0.065 but p<0.001. A tendency for a difference to be significant is when p >0.05 and p <0.10 and the exact probability will be in the text (eg: p=0.058).
There were numerical differences .... (..is not allowed)
Table 7: Mean values for gasifier characteristics using coconut shells-husks, cassava stems, mulberry stems and branches of Cassia stamea as feedstock |
||||||
|
Cassia |
Cassava |
Mulberry |
Coconut |
SEM |
Prob. |
Biomass, kg |
||||||
Initial |
36.7 |
32.3 |
33.7 |
34.4 |
1.3 |
0.21 |
Final |
4.93 |
1.9 |
0 |
3.07 |
2.19 |
0.49 |
Consumption |
36.9 |
35.1 |
40 |
36.4 |
2.9 |
0.69 |
Moisture, % |
14 |
13.3 |
15.7 |
14 |
1.4 |
0.69 |
Density, g/litre |
348a |
97.0c |
273b |
128c |
10.4 |
<0.001 |
Duration, h |
3.91 |
3.67 |
4.09 |
4.02 |
0.328 |
0.81 |
Output, kwh |
27.4 |
25.7 |
28.7 |
28.2 |
2.29 |
0.81 |
Conversion# |
1.23 |
1.18 |
1.18 |
1.11 |
0.044 |
0.42 |
Efficiency## |
0.187 |
0.204 |
0.204 |
0.217 |
0.0082 |
0.17 |
Biochar, g/kg biomass DM |
109 |
128 |
109 |
137 |
16.5 |
0.58 |
# kg dry biomass/kwh; ## Assumes 15 MJ/kg biomass DM and 3.6 MJ/kwh of electricity abc Means in the same row without common letter are different at P<0.05 |
Creating the final version of the table by eliminating the unnecesary lines and borders:
Table 7: Mean values for gasifier characteristics using coconut shells-husks, cassava stems, mulberry stems and branches of Cassia stamea as feedstock |
||||||
Cassia |
Cassava |
Mulberry |
Coconut |
SEM |
p |
|
Biomass, kg |
||||||
Initial |
36.7 |
32.3 |
33.7 |
34.4 |
1.3 |
0.21 |
Final |
4.93 |
1.9 |
0 |
3.07 |
2.19 |
0.49 |
Consumption |
36.9 |
35.1 |
40 |
36.4 |
2.9 |
0.69 |
Moisture, % |
14 |
13.3 |
15.7 |
14 |
1.4 |
0.69 |
Density, g/litre |
348a |
97.0c |
273b |
128c |
10.4 |
0<.001 |
Duration, h |
3.91 |
3.67 |
4.09 |
4.02 |
0.328 |
0.81 |
Output, kwh |
27.4 |
25.7 |
28.7 |
28.2 |
2.29 |
0.81 |
Conversion# |
1.23 |
1.18 |
1.18 |
1.11 |
0.044 |
0.42 |
Efficiency## |
0.187 |
0.204 |
0.204 |
0.217 |
0.0082 |
0.17 |
Biochar, g/kg biomass DM |
109 |
128 |
109 |
137 |
16.5 |
0.58 |
# kg dry biomass/kwh; ## Assumes 15 MJ/kg biomass DM
and 3.6 MJ/kwh of electricity
|
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Cerón-Muñoz M F, Tonhati H, Costa C N, Rojas-Sarmiento D and Solarte Portilla C 2004 Variance heterogeneity for milk yield in Brazilian and Colombian Holstein herds. Livestock Research for Rural Development, Volume 16, Article #20 Retrieved June 1, 2004, from http://www.lrrd.org/lrrd16/4/cero16020.htm
Many Journals are at present accessible on the Web (do not indicate the URL of Journals that need a subscription or a payment!!). Here is a list (not limitative) of some Journals freely available:
Livestock Research for Rural Development: http://www.lrrd.org/
Tropical Animal Production:
http://www.cipav.org.co/TAP/tapindex.htm
Journal of Animal Science: www.animalsciencepublications.org/publications/jas (for issues that appeared more than one year earlier!)
Journal of Dairy Science:
http://jds.fass.org/ (for issues that
appeared more than one year earlier!)
Annales de Zootechnie (accessible through Animal Research site)
Animal Research: https://animres.edpsciences.org/
Pakistan Journal of Nutrition: http://www.pjbs.org/pjnonline/
Revista Brasileira de Zootecnia: http://www.scielo.br/scielo.php?script=sci_serial&pid=1516-3598&lng=en&nrm=iso
Revista Brasileira de Saúde e Produção Animal: http://revistas.ufba.br/index.php/rbspa/issue/archive
Archivos de Zootecnia: http://www.uco.es/organiza/servicios/publica/az/php/az.php
Most of FAO (http://www.fao.org)
publications and
FAO/IAEA (http://www-naweb.iaea.org/nafa/index.html)
publications
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