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Andreeva, E. M.

doi:10.1023/a:1020269827577

Cited by 4 publications

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“…За даної патології у хворих тварин знижуються середньодобові прирости, вони відстають у розвитку, збільшується сприйнятливість до інфекцій, а за тяжкого перебігу -зростає падіж поросят, який може досягати 60-70 %. Хвороба спостерігається на 5-7 доби життя, а максимального розвитку досягає у тритижневому віці (Bonkovsky & Herbert, 1991;Andreeva & Serpkov, 2002;Karput' & Nikoladze, 2003;Sidorkin et al, 2007;Killip & Bennett, 2007;Zharov & Zharov, 2012;Todoriuk et al, 2018;Martyshuk et al, 2019).…”

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“…Основою сучасної профілактики ферумдефіцитної анемії є внутрішньом'язове застосування ферумодекстранових препаратів поросятам упродовж першого тижня їхнього життя (Karput' & Nikoladze, 2001;Batrakov et al, 2005;Levchenko et al, 2012). Важливе значення має саме профілактика, оскільки летальність за даної патології є досить висока, а після одужання у результаті лікування тварини не реалізовують власної потенційної продуктивності, а м'ясо втрачає поживні якості та відповідно має обмеження щодо реалізації (Andreeva & Serpkov, 2002).…”

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Comparative effectiveness of iron-containing drugs for the prevention of iron deficiency anemia in piglets

Derkach

2021

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Prevention of iron deficiency anemia in piglets is an important preventive measure to ensure the health of pigs, as mortality from this pathology is quite high, and animals that recover from treatment do not realize their own potential productivity. The aim of our study was to evaluate the effectiveness of the use of iron (IV) clatrochelate in combination with cyanocobalamin for the prevention of iron deficiency anemia in piglets compared to the traditional scheme of prevention of this disease. To achieve this goal, 2 groups of newborn piglets-analogues were formed during their retention with suckling sows – control and experimental, 15 animals in each. The experiment lasted 30 days. Piglets in the experimental group were selected from sows given 10 ml of 10 % iron (IV) clatrochelate solution and cyanocobalamin solution twice intramuscularly during pregnancy. Piglets of the control group according to the traditional scheme of prevention of iron deficiency anemia on the second day of life were administered iron dextran drug (at the rate of 200 mg of iron (III) per injection). The results of the study show that the body weight of piglets from 1 to 9 days of their life who are born from sows which used iron (IV) clatrochelate and cyanocobalamin during pregnancy was less (P < 0.001) than the body weight of piglets which used iron dextran on the 2nd day after birth; did not differ on the 12 day of life, but on the 30 day was higher than the body weight of piglets in the control group 1.15 times (P < 0.001). The level of protein in the serum of piglets of the experimental group from birth to 30 day of life was probably higher compared to the control, which indicates that iron (IV) clatrochelate stimulates protein synthesis in the body. Therefore, double injection of 10 % solution of iron (IV) clatrochelate in a dose of 10 ml in combination with injections of cyanocobalamin at a dose of 500 mcg of active substance to pregnant sows pregnant sows 14 and 7 days before the expected farrowing provides a preventive effect of iron deficiency anemia in piglets born to them.

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Comparative effectiveness of iron-containing drugs for the prevention of iron deficiency anemia in piglets

Derkach

2021

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Geographic biotype and host-associated local adaptation in a polyphagous species, <I>Lambdina fiscellaria</I> (Lepidoptera: Geometridae) feeding on balsam fir on Anticosti Island, Canada

Hébert¹,

Berthiaume²,

Bauce³

et al. 2006

Bulletin of Entomological Research

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The debate about mechanisms underlying the evolution of host specialization by herbivorous insects remains open. Natural selection may act locally and lead to different patterns of geographic variation in life history traits of polyphagous herbivores. The hypothesis of genetically-based trade-offs in offspring performance on different hosts has been proposed but this has rarely been demonstrated. Under laboratory conditions, the biological performance of two populations of the hemlock looper Lambdina fiscellaria (Guenée), a highly polyphagous lepidopteran, was compared when reared on three different tree host species: balsam fir, eastern hemlock and sugar maple. One population originated from Anticosti Island, Québec, Canada, where the insect has evolved without having access to two of the three tree species tested, the other being from the mainland where all tree species are present. When reared on balsam fir foliage, which was naturally available to each population, larvae from Anticosti Island underwent four instars compared with five for the mainland population, indicating the existence of geographic biotypes in L. fiscellaria. When reared on the foliage of non-naturally available host trees, larvae from Anticosti Island had a higher incidence of supernumerary instars. This is a unique example where local adaptation to environmental conditions of an insect herbivore is expressed through a differential number of larval instars. Moreover, the Anticosti Island population showed a higher growth related index on the host available to both populations indicating that a fitness trade-off was the evolutionary process underlying the local adaptation of this population on balsam fir.

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Host tree age as a selective pressure leading to local adaptation of a population of a polyphagous Lepidoptera in virgin boreal forest

Berthiaume

Bauce

Hébert

et al. 2009

Bull. Entomol. Res.

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We tested the hypothesis that host tree age may act as a selective factor and lead to local adaptation of the hemlock looper (Lambdina fiscellaria), a geometrid Lepidoptera that has a wide geographical distribution and has evolved in different eco-zones characterized by different levels of floristic composition, age structure and fragmentation level. Considering that hemlock looper outbreaks mainly occurred in old forests, we compared the biological performances of two populations. The first population was collected in the northern virgin boreal forest, which is dominated by mature and overmature coniferous stands that have not suffered from human disturbance. The other population was collected in the southern mixed-wood forest, which is more diversified and has been modified by forest harvesting. Larvae were reared under controlled conditions on foliage from three age classes of balsam fir trees: juvenile, mature and overmature. Although we measured significant variations of biological performances between the two populations, no significant effect of the age of the balsam fir trees could be detected for males from both populations or for females from the southern population. However, northern females were strongly affected by the age of balsam fir trees on which they fed, as their pupal weight was 12% higher and their fecundity increased by 27% on overmature trees compared with juvenile ones. These results indicate that under the same selective pressure, females adapt their strategy to maximize their fitness, and thus they appear as the driving force of evolution through the local adaptation concept. Furthermore, the two populations evolved in distinct habitats and their adaptation reflects selective pressures occurring inside their original environment. This is the first report on local adaptation of an herbivore that is mediated by host tree age. Changes in forest age structure may have a considerable impact on insect local adaptation and presumably on their population dynamics.

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Cited by 4 publications

References 4 publications

Comparative effectiveness of iron-containing drugs for the prevention of iron deficiency anemia in piglets

Comparative effectiveness of iron-containing drugs for the prevention of iron deficiency anemia in piglets

Geographic biotype and host-associated local adaptation in a polyphagous species, <I>Lambdina fiscellaria</I> (Lepidoptera: Geometridae) feeding on balsam fir on Anticosti Island, Canada

Host tree age as a selective pressure leading to local adaptation of a population of a polyphagous Lepidoptera in virgin boreal forest

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