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. LXIII, Issue 1
Written by Marius Giorgi USTUROI, Roxana Nicoleta RAŢU, Alexandru USTUROI

In view of the importance that current consumers attach to the quality of the purchased foods, the paper presents the results regarding how the age of slaughter and the type of biological material influence the chemical composition of the meat in the chicken broiler. In this regard, three hen-meat hybrids (one industrial type: Ross-308 and two slowgrowing: Hubbard and HB Color) were studied under identical conditions according to the principles of slow growth and slaughtered at age different (63 and 81 days respectively). Chemical analyzes were performed on samples taken from the muscles of the pulp and chest, in equal proportions. The data obtained showed an increase of 0.90% in the proportion of dry matter of meat in specimens slaughtered at 81 days, but also of lipids (by 0.49%) and proteins (by 0.32%). Of the hybrids tested, Hubbard achieved the highest increases in dry matter (1.06%) and protein (0.44%) and lowest increases in lipids (only 0.46%). The conclusion of the study was that, under slow growth conditions, the Hubbard hybrid slaughtered at 81 days of age offers meat with superior chemical characteristics.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 1
Written by Sorin-Iulius BARBUICA, Camelia HODOSAN, Anca BORDIANU, Suzana-Elena VOICULESCU

This work presents the particularities of the diet in some sporting branches depending on the nature of the effort, the organs requested, the climatic conditions etc. Taking into account these criteria, the amount of nutritious substances found in food are established, in order to satisfy the average energetical consumption of a sportsman weighing around 70 kg who practices a certain sport. To help the body recover after exercise sportive must facilitate detoxification and the body’s water intake must be maintained at constant limits. The research method presented is based on bibliographic study and experimental methods in order to determine the nutritional values needed for a consistent diet. The sports performances obtained worldwide have reached values that years ago seemed inconceivable. For their achievement, the athletes are subjected to a complex training process, in which the effort often requires the body to exceed its maximum physiological limits.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 2
Written by S.N. TSEPKOVSKAYA, A.V. ZAGUMENNOV, V.A. ERMOLAEV, Yu.V. ZEMLYANOVA

Eye diseases of young cattle are one of the reasons hindering the development of animal husbandry. Keratoconjunctivitis is a disease of the eye characterized by inflammation of the conjunctiva in the initial stage and subsequent transition process to the cornea. The disease is manifested in different forms and severity of inflammation. Keratoconjunctivitis causes serious economic losses due to high incidence and prevalence, both in our country and abroad. Losses from keratoconjunctivitis consist of slowing down the growth and development of young animals, loss of productivity, loss of live weight. On average, 25-30% of sick animals remain blind, the same amount of sight loss is 50%. In calves 5-6 months of age with obvious signs of keratoconjunctivitis contained in the conditions of the private livestock breeding complex, serious changes in ALT and AST activity were revealed during biochemical studies of blood plasma. Moreover, AST indicators during treatment exceeded the reference values characteristic of a given species and age of animals. Indicators of Albumin and Total protein fluctuated slightly, which indicates the activation of humoral and cellular immunity.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXII, Issue 2
Written by Ion Silver MILITARU, Laura Florentina VLĂSCEANU, Alexandru MIHAI, Stelian BĂRĂITĂREANU, LiviaVIDU, Gheorghe Emil MĂRGINEAN

Management of lameness in dairy cows became a big problem for specialists, leading to legislative rules. Lameness has an major impact on health and cow comfort, affecting also the fertility and milk production. While in many instances pain may be difficult to recognize in an animal, lameness is a clear sign that an animal is experiencing pain and discomfort. This study has been performed in Agroserv Mariuta dairy on 50 cows in transition period. In this study was include factors who influence the hoof heath, prevention tips, treatment and benefits.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 2
Written by Radka MALINOVA, Svetoslav KARAMFILOV, Vasil NIKOLOV

Two protocols for planned synchronization and resynchronization of estrus and ovulation of heifers (n-25), aged between 11 and 18 months, of the Aberdeen Angus breed, bred in Bulgaria, have been studied. An experiment was designed to evaluate pregnancy rates in beef heifers synchronized in two different protocols with consecutive synchronization and resynchronization. The first protocol is a combination of two standard and may in principle be divided into two consecutive stages. In the first stage, a group of 11 heifers are under Select Synch protocol extended period of observation and detection of estrus (6-20 days). In the second stage, after 32 days and ultrasound pregnancy detection, standard PRID-Synch protocol and timed artificial insemination, are applied for the resynchronization. In second protocol standard PRID-Synch protocol and timed artificial insemination are applied for synchronization and resynchronization of group of 14 heifers with sex-sorted semen. We found that the total pregnancy rate for the first protocol is 32.39 ± 10.54 % and for the second protocol is 23.8 ± 8.92 %.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 1
Written by Rumyana IVANOVA, Toncho PENEV, Hristo HRISTEV, Zivka GERGOVSKA

The present study examines some physiological and biochemical parameters in dairy cows depending on the temperature-humidity index (THI) in spring (May) and summer (August) in two different time zones - 10 and 15h. The temperature-humidity index (THI) in a semi-open type of building, the body temperature, pulse rate and breathing were measured twice a day (10 and 15.00 o’clock), as well as the number of ructus of the dairy cows per 24 hours in spring and summer. Changes in the biochemical parameters of the total protein, creatinine and urea were ascertained in relation to the changes in THI and the season, which are within the reference values for cattle. The high THI lowers the blood sugar levels (up to 31%), but increases the total bilirubin levels (up to 3 times) and the transaminases activity (ASAT up to 3 and ALAT - up to 4.5 times) compared to the reference values for the respective species. The changes in THI values have a statistically significant influence on the heart rate, respiration and body temperature (p<0.001). The month (season) of the study has a statistically significant influence on the blood sugar, total protein, urea and bilirubin (p<0.001) and less influence on the body temperature (p<0.01) and creatinine (p<0.05.)

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 1
Written by Mihai PRUNA, Teodor COCOR, Marius MAFTEI, Livia VIDU, Iulian VLAD, Gheorghe MARGINEAN

This study is a part of an ample research regarding racing performance’s improvement of Romanian Trotter horse breed. Study of average values of the main body dimensions that are used in horse selection process can offer an idea about the population genetic level, because, regarding to a population, the average of phenotypic value is equal with average of genotypic value. The main body dimensions that was analysed in this study and who are used in the selection process of horses in Romania, is: withers height, thoracyc perimether and cannon bone perimether. All this evaluation of Romania Trotter horses through the integration of individs in an evaluation class, it was made in accordance with selection methodology. The biological material is represented by 62 Romanian Trotter horses, 8 males and 54 females, at different ages, owned by Dor Marunt studfarm. The average performances of characters are presented in the paper. We can observe a small grade of variability with some differences between sexes. The average performances of the characters are between characteristic limits of the breed.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 2
Written by Krasimira AVRAMOVA

The purpose of the research is to prolong the period of silkworm rearing during the summer and autumn season. The rearing was carried out in the months of July, August and September at the Experimental Station of Sericulture at the Agricultural University in Plovdiv, Bulgaria. Silkworms in the first, second and third instars were fed by applying artificial diet, and in the last two larval instars – on mulberry leaves from Morus alba L. The results obtained from the studied technological characters show that there is a decrease in the basic values of the cocoon weight and filament length. For other characters, the decrease is negligible. The main conclusion is that the rearing of silkworms during the summer months by using combination of feeding on artificial diet in the first three instars and on mulberry leaves in the fourth and fifth instars is successful and leads to the possibility for more employment of people and increasing of the income of the silkworm rearers.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 1
Written by Dragos Mihai LAPUSNEANU, Ioan Mircea POP, Cecilia POP, Cristina Gabriela RADU-RUSU, Andreea MUSCA, Roxana ZAHARIA

Compound feed and raw materials are potential vectors of pathogenic bacteria and potentially toxigenic fungi. The paper conducts a study on the production of compound feed in relation on food safety, by mycological and bacteriological analysis of samples of raw materials and compound feed for broilers, taken from a feed mill from Romania during 2019. Methodologically, the data were processed, analyzed and synthesized in the form of graphs and tables. The obtained results highlight during the analyzed period, in the samples of mycologically analyzed raw materials, eight genera of potentially toxigenic fungi were identified; the largest presence was the genus Aspergillus (64.45%). In the analyzed compound feed samples, four potentially toxigenic fungal genera were identified; in the samples with quantifiable results, the majority (61.9%) was identified the genus Aspergillus, and the lowest presence was the genus Cladosporium (9.53%). All results of bacteriological analysis aimed at determining the contamination with Salmonella spp. (54 analyzes for raw materials and 105 for compound feed) and E. coli (51 analyzes for raw materials and 101 for compound feeds) were negative. It can be concluded that in the production process of compound feed, the mycological, bacteriological and mycotoxicological analysis is must both for raw materials susceptible to contamination and of the finished products obtained; this goal is achieved in the unit studied, the results highlight the effectiveness of specific food safety control processes.

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Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 1
Written by Maria CIOCAN-ALUPII, Vasile MACIUC

The paper aims to present the situation of animal husbandry activity in the counties with mountain area in Romania, in 2019, in relation to the activity of milk collection and processing in the 27 counties with mountain area. This paper is based on statistical data provided by the National Sanitary-Veterinary and Food Safety Authority, the National Institute of Statistics and the National Agency for Mountain Area (ANZM). These data were statistically processed within the National Agency for Mountain Area in the following indicators: number of counties with mountain area, number of administrative-territorial units in the mountain area, total area of the mountain area (km2), number of animals in the mountain area (cattle, sheep, goats) in 2019, the total area of permanent meadows in the mountain area (ha), number of milk collection centers in the counties with mountain area, number of milk processing units in the counties with mountain area. The statistically processed data show that in counties with large herds of animals there are milk processing centers and units compared to counties with small herds of animals that do not have centers and units of milk processing or are few.

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

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