ISSN 2285-5750, ISSN CD-ROM 2285-5769, ISSN-L 2285-5750, ISSN Online: 2393 – 2260
 

Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Aurelia NICA, Mihai-Stefan PETREA, Ira-Adeline SIMIONOV, Alina ANTACHE, Victor CRISTEA

Beavers are large, semiaquatic rodents in the genus Castor native to the temperate Northern Hemisphere. The European beaver (Castor fiber) has an undoubtedly positive impact on the environment: it is a key species, which means that it plays a critical role in the biodiversity of ecosystems and that many species, some endangered or threatened, rely on beavers and the landscapes they build. In this way, there are many benefits that humans and other animal species can get from beavers. Also, dam construction has the potential to alter the hydrology, geomorphology, biogeochemistry, and ecosystems of river corridors and the feedbacks between them, thus the beaver is also recognized as an 'ecosystem engineer’. However, beavers can also generate conflict situations because not all watercourses can withstand the intense construction of dams. Thus, in many contexts, the engineering activities of the beaver may come into direct conflict with other priorities: agriculture, urban land use, forestry, irrigation. Beavers occasionally damage selected trees, but the worst damage is caused by their burrows, which raise water levels in streams, ponds or lakes, flooding the ground and frequently killing large areas of valuable trees in the forest. There are proven costs to agriculture that result from the impact of beavers, and these will have to be fully taken into account in future decisions to manage the beaver population. The ecological impact of the Eurasian beaver on habitat structure has been little investigated in Europe and includes in particular the changes that take place during dam construction activities. The purpose of this study was to summarize the publications that analyse the ecological impact of beaver (Castor fiber).

[Read full article] [Citation]

Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Genoveva STAYKOVA, Margarit ILIEV, Todor TSONEV, Georgi ANEV

Subject of the study were 678 sheep at 18 months from the North-East Bulgarian Merino breed, born in the period 2013-2019, ownership of the Scientific Agricultural Center - Targovishte. The following traits were analyzed: wool productivity, staple length, clean wool yield, clean fiber and tenderness of the fibers. The influence of the factors - year of birth, type of mating and breeding line was researched. The variance analysis was based on a multifactor linear statistical model. Year of birth had a highly significant influence of the studied traits. The average wool yield was 8.154 kg., staple length was 11.469 cm., average clean wool yield was 61.634 % and clean fiber was 5.101 kg. The genetic factors - selection type and breeding line had no significant effect on the traits for wool productivity. Heritability values for the studied traits were low which indicates a decrease of the genetic diversity and limited abilities for effective selection for increasing wool productivity.

[Read full article] [Citation]

Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Lovita ADRIANI, Chitra KUMALASARI, ROHANDI, Made JONI, Diding LATIPUDIN

Powder probiotic has a good effect on the digestive tract which improvement of the immune system. This study to know the impact of powder probiotics on the immune system which includes levels of leukocytes, heterophils, lymphocytes, and heterophils to lymphocytes ratio in laying hens age 90 weeks. This study was conducted from February to March 2021 at Laying Hens Farm in Sukarapih Village, Sukasari, Sumedang, Jawa Barat. The object study were 40 laying hens aged 90 weeks. Completely Randomized Design (CRD) was applied which consists of four treatments and five replications. The treatments are basal ration without powder probiotic (T0); basal ration + 2 % powder probiotic (T1); basal ration + 3% powder probiotic (T2); and basal ration + 4% powder probiotic (T3). Statically this study showed no significant difference in levels of leukocyte, heterophil, lymphocyte, and heterophil to lymphocyte ratio. However, the administration of powder probiotic 4 % has improved the levels of, heterophil, lymphocyte, and heterophil to lymphocyte ratio on laying hens aged 90 weeks near rejected.

[Read full article] [Citation]

Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Iuliana BANU, Nicoleta MATEI, Iuliana APRODU

Wheat germs rich sources of biologically active compounds and are therefore among the most valuable by-products of the milling industry. Effect of defatted wheat germ powder addition on dough rheological properties and bread quality prepared with white wheat flours with different gluten index was investigated in this study. Different percentages of defatted wheat germ powder (5 and 10 g/100 g flour) were added to the white wheat flour samples, and dough rheological properties were tested using various Mixolab protocols. Defatted wheat germ powder addition increased the water absorption, dough development time, stability and weakening. Significant positive correlation between dough weakening or stability and Wixo parameters were registered. The Chopin+ torque values associated to starch gelatinization and retrogradation decreased from 2.03 to 1.90 Nm and from 3.21 to 2.68 Nm, respectively. Finally, the baking test indicated that bread samples with 10% defatted wheat germ powder had significantly lower specific volume and higher crumb firmness compared to the controls. Overall the results indicated that the addition of 5% defatted wheat germ powder to the wheat flour allows preparing bread with acceptable quality.

[Read full article] [Citation]

Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Valentin FOKSHA, Alexandra KONSTANDOGLO, Vasyli KURULYUK

The article presents the results of the study of productive indicators and features of the exterior of the trunk and morphological properties of the udder of first- heifer cows of Jersey breed. The research was carried out in the herd of the breeding farm Society of limited liability “Topal-Bereket”, town Comrat on first-heifer cows of Jersey breed. Analysis of milk productivity of the pedigrees of female ancestors of first-calf heifers showed that the highest milk yield and fat content were at the mothers of fathers - 8772 kg of milk and 6.02% of fat. On average, the milk yield of first-calf cows for 305 days of the first complete lactation was 4660 kg of milk with a fat content of 5.96%, the amount of milk fat - 276 kg. Exterior assessment showed that the height at the withers of the first Jersey heifers averaged 126.0 cm, and the height at the croup was 131.1 cm. The chest is deep and wide and averaged 63.7 cm and 40.5 cm, respectively. The bone is thin - the girth of the pastern is 16.6 cm. First heifers of the Jersey breed are characterized by a compact physique with an undercut index of 115.7%, which is characteristic to them during the studied period of development. The relationship between girth and width of the udder and milk yield per lactation of Jersey first-calf cows is weak and positive and amounts to 0.092 and 0.102, respectively. The correlation between the length, width and girth of the udder and the fat content in milk is weak and amounts to +0.123, +0.053 and +0.158, respectively.

[Read full article] [Citation]

Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Gheorghe DOBROTĂ, Victor CRISTEA, Ira-Adeline SIMIONOV, Nicoleta-Georgeta DOBROTĂ, Ștefan Mihai PETREA

The pikeperch (Sander lucioperca, L.-1758) is a valuable fish species, with a high demand among human consumers, due to its superior nutritional and organoleptic characteristics such as: white flesh, soft texture, lack of intramuscular bones and pleasant taste. One of the main challenges of the pikeperch rearing technology is encountered during the first summer of the production cycle. The main desideratum during this period is to obtain large quantities of fingerlings per unit area, with the highest possible survival rate and low production costs, under the conditions specific to the rearing units. Therefore, the aim of the present study was to apply 2 different feeding regimes for the rearing of one summer old pikeperch in earthen ponds, as it follows: V1- with pelleted fish feed and V2- with live fish food. Thus, the experiments were performed at S.C.D.P. Nucet during three different rearing seasons (2018, 2019 and 2020), in triplicate. The best results were obtained in variant V2 (live food administration) and the followed indicators were survival rate, individual growth rate and production per unit area.

[Read full article] [Citation]

Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Miroslav HRISTOV*, Nikolay MARKOV, Svetoslava STOYCHEVA, Lora MONDESHKA, Tsvetomira BANCHEVA, Tsvetelina DIMITROVA

A characteristic of the external features of 'Limousin’, reared in the Central Geographical Region of Bulgaria is presented. The breed is specialized in beef production. External measurements and body mass indices of 'Limousin’ cows reared in herds in the area of vicinity the town of Troyan, Central Bulgaria were made. External dimensions of offspring of cows born in Bulgaria and Hungary were taken. The study was conducted on 50 first-calf heifers raised on 3 different farms for the period 2019-2021. The removal of the external dimensions took place during spring calving, 100-150 days after birth. The country of birth of cows had a significant impact on the rump height at the sacrum and sciatic bones and chest depth of their offspring (P <0.001). Differences in wither height, athwart body length, and cannon circumference were demonstrated in (P <0.05). The cows of offspring born in Hungary were 2.5 cm higher at the withers than those born in Bulgaria, and the difference in chest depth reached 8.3 cm. Pronounced body superstructure was observed in cows, descendants of cows born in Hungary.

[Read full article] [Citation]

Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Lucia LAMBEY, Ronny NOOR, Wasmen MANALU, Dedy SOLIHIN, Ben TAKAENDENGAN

Utilization of animal genetic resources that live wildly needs to be maintained as well as one of the conservation efforts in a sustainable manner. This study aims to obtain information on genetic characteristics and kinship of Weris (local name) Gallirallus philippensis in several locations in Minahasa through molecular analysis using the Cyt-b gene. Gallirallus philippensis in Minahasa seems to have considerable genetic differences with their relatives from the Philippines and Australia where the results of the analysis show that the species found in Minahasa (Papontolen, Ranoyapo, Tondano, and Wusa) although still have a high genetic diversity based on the existence of 7 different haplotypes and form several branches but still in the same cluster. Alleged Weris in Minahasa may be a separate species (Gallirallus celebensis) need to be considered.

[Read full article] [Citation]

Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Lora MONDESHKA, Tsvetelina DIMITROVA, Nikolay MARKOV, Miroslav HRISTOV, Svetoslava STOYCHEVA, Tsvetomira BANCHEVA

Colostrum is the first milk that a newborn receives immediately after birth. Its quality and timely intake are the main factors influencing the survival chances of the newborn. The composition of goat colostrum depends on the breed, age, diet and health of the animal. Immunoglobulins from the blood of the mother goat do not cross the placental barrier during pregnancy, at birth the kid does not have antibodies against the surrounding infectious agents. These immunoglobulins are concentrated in the colostrum and provide the passive immunity that the kid acquires. Goat colostrum has been shown to contain twice as much immunoglobulin G, as cattle colostrum. The specific biological properties of colostrum make it a valuable material for the development of food supplements. In recent years, these supplements have become increasingly popular on the world market as a powerful immunostimulant. The objective of the present review is to give a brief overview of the physicochemical and immunological properties of goat colostrum as well as the differences in the different breeds.

[Read full article] [Citation]

Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Maria Desimira STROE, Raluca Cristina GURIENCU, Liliana ATHANOSOUPOLOS, Gabriel ION, Elena COMAN, Elena -Eugenia MOCANU

Evaluating the fish parasitic fauna should constitute a major concern, especially in the climate change context because the parasites have a significant impact both on the natural fish population and the farm yield, economic viability, or sustainability. In this context, this study aimed to present the influence of water quality parameters upon the distribution and variety of parasites of 14 freshwater species, belonging to 5 systematic families: Cyprinidae, Percidae, Siluridae, Clupeidae, Esocidae. Parasitofauna analyses were performed through classic methods and the results were expressed as the prevalence of parasitic fauna and their intensity grades. Although the experimental groups have a similar environment, they present a distinct parasitofauna which shows a strong influence of the environmental factors upon its development. Adequate knowledge and periodic monitoring of the prevalence of parasites on the fish populations can have multiple implications and can be used as an indicator of anthropogenic impacts on other aquatic environments.

[Read full article] [Citation]

Page 3 of 10

The publisher is not responsible for the opinions published in the Volume. They represent the authors’ point of view.

© 2019 SCIENTIFIC PAPERS. SERIES D. ANIMAL SCIENCE. To be cited: SCIENTIFIC PAPERS. SERIES D. ANIMAL SCIENCE.

Powered by INTELIDEV

Animal Science Journal