6 research outputs found
Economic assessment of use of pulses in diets for captive red deer
Received: February 6th, 2021 ; Accepted: April 24th, 2021 ; Published: April 29th, 2021 ; Correspondence:[email protected] quality of compound feeds used in livestock diets could be enhanced by means of
domestically produced pulses. Nevertheless, there are available few research studies that would
allow us to identify the economic efficiency of livestock diets with pulses and the digestibility of
protein by livestock for deer farming. Accordingly, the present research aims to identify the
economic efficiency of diets supplemented with domestically produced pulses - faba beans, peas
and lupine beans - for captive deer. The research conducted a feeding experiment on captive deer
(Cervus elaphus) kept in fenced areas to identify the economic efficiency of diets supplemented
with three legume species: peas (variety ‘Vitra’), faba beans (variety ‘Fuego’) and narrow-leaved
lupin seeds (variety ‘Boregine’). Deer productivity was assessed by live weight, live weight gain,
feed intake and protein efficiency ratio during the experimental period, as well as feed cost per
live weight gain unit. The research found that feeding deer diets containing peas, faba beans and
lupine beans as protein-rich feedstuffs was economically advantageous - at the same cost of feed,
deer productivity increased and per-unit production costs decreased. Live weight gains during the
experimental period were 1.02% higher in group 2 (pea diet), 1.78% higher in group 3 (faba bean
diet) and 2.91% higher in group 4 (lupine diet) than in the control group. During the experimental
period, the highest protein efficiency ratio was found in group 4 fed a diet containing lupine beans
- a unit of protein fed (1 kg) yielded the highest weight gain or 0.43 kg. Feed costs per kg of live
weight gain were the lowest in group 4 (2.32 EUR kg-1
), 2.48 EUR kg-1
in group 3 and
2.70 EUR kg-1
in group 2, which was 20.56%, 14.81% and 7.39%, respectively, lower than those
in the control group
Legumes in the diet of dairy cows from the economic perspective
ArticleBased on the experimental data, one can conclude that feed rations may comprise peas
var. ‘Bruno’ and faba beans var. ‘Lielplatone’ grown in Latvia, thereby replacing the use of
imported soybean cake. After summarising the results of trials, one can conclude that the diets
comprising only one kind of legumes (peas or beans) were the most economically efficient, while
the highest production efficiency was achieved if incorporating 22–24% ‘Lielplatone’ faba beans
into the diet for dairy cows. In Europe and Latvia, foods of animal origin comprise, on average,
45% of the total agricultural output value; an essential role in the production of the foods is played
by the supply of protein-rich feedstuffs to the livestock industry. An analysis of the factors
influencing productivity in dairy farming shows that a diet is the most important factor that
promote or hinder the functioning of the inherited genetic potential. In order to meet the dietary
energy, protein and mineral requirements of cows, the cows have to be fed a diet according to
their physiological condition. In recent years in many countries, research investigations into
protein sources have been conducted, as a high protein content of feedstuff is the most expensive
component of a feed ration. For this reason, their use in livestock diets might be economically
inefficient and therefore the key focus has to be placed on opportunities to increase the content
of protein in domestically produced feeds
Effect of sapropel fertilizer on the quality of the yield of some field crops
Received: February 21st, 2023 ; Accepted: May 8th, 2023 ; Published: May 22nd, 2023 ; Correspondence: [email protected] is specific water body sediments containing a high level of organic matter
formed from remains of water biota mixed with mineral components. One of the most promising
utilisation ways of sapropel is agriculture where it can be used as soil amendment to improve soil
physical properties and thus obtain economically viable and high quality yield of field crops. For three
years the experiments were conducted at Priekuli Research Centre of the Institute of Agricultural
Resources and Economics. Dehydrated sapropel mass from Lake Bizas was studied as soil biological
fertilizer to determine its suitability for use in field crop production. Researches were carried out
in organic crop rotation, in the fields of potato, winter rye and field bean. Three different doses
of sapropel fertilizer were applied. During the three-year period (2020–2022), the yield indicators
of the plant species included in the study were evaluated, and the quality of the yield of these species
was assessed. The results of research confirm the positive effect of sapropel on yield quality
indicators - protein (field beans), starch (potatoes) falling number and 1,000 seed mass (winter rye)
Peas and beans as a protein feed for dairy cows
ArticleThe need for alternative protein sources to soybean meal, partially or fully substituted
in the diets of dairy cows, is an urgent problem in farming nowadays. Soybean meal is the most
common protein source included in feed concentrate for dairy cows in Latvia and in other
European countries as well. Among possible alternatives, grain legumes seem interesting for
dairy cow diets because of their rapid degradation in the rumen and readily available energy. Peas
and beans will be an important source of proteins in feed. Biochemical tests were done on eight
samples of domestically grown dried peas of average size, 11 samples of dried beans of average
size and some samples of soybean meal to examine the chemical composition of the peas and
beans. Peas and beans were included in the feed ration during a feeding trial on dairy cows. Milk
yields and milk quality parameters were examined in the trial. The digestibility of peas of most
varieties and breeding lines examined was considerably higher than that of soybean meal, while
the digestibility of beans of all the varieties and breeding lines examined and of soybean meal
was the same. The peas contained more reducing sugars, starches and had a higher value of NEL
than the tested beans, which meant the peas had a higher nutritional value. The diets comprising
beans and peas fed to the dairy cows increased the fat and protein contents of milk, compared
with the control group and the beginning of the trial. The total amount of amino acids increased
in the bulk milk samples of all the trial groups during the feeding trial