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Associations analysis of production traits with leptin gene T3469C polymorphisms in pig
39-43Views:201The aim of this study was to define the connection between the leptin (LEP) gene T3469C polymorphism and its potential association with production traits in improved hybrid pigs. The study included data from 397 gilts and barrows from 2 different sample. The polymorphism was identified by using the polymerase chain reaction-restriction fragment-length polymorphism (PCR–RFLP) method with HinfI restriction enzyme. Two alleles of LEP gene were identified: T (0.93) an C (0.07). The analysis of values of production traits, depending on LEP genotype did not reveal significant (P≤0.05) differences. In the examination the loin diameter (between the 2nd and 3rd ribs), the live weight at slaughter and the averege daily gain during fattening were higher at pigs with C allele than pigs with TT genotipe. Accordingt to our data the effect of C allele was favourable in this population, because these animals had bigger bodyweight without valuable change of lean meat percent.
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Effect of different lysine-metabolized energy ratio on performance of meat-type geese
39-42Views:256The aim of the experiment was to determine, how the different ratios of the digestibility lysine/ metabolized energy (0.82, 0.87, 0.91 g DLYS/MJ AMEn) of the feed influence the performance of geese. There were 150 goslings (3 treatments, 5 cages/treatments, 10 birds/cages). The experiment has started and finished at the age of 3 and 9 weeks, respectively.
The results of the experiment showed, the different ratios of DLYS/AMEn (0.82, 0.87, 0.91 g DLYS/MJ AMEn) did not influence the performance of young geese. Better growth performances were found for the 0.91 g DLYS/AMEn feed (feed intake, body weight gain, feed and energy conversion rate). This treatment coincided with high feeding costs. Based on these results we need more models and farm experiments to prove this tendency. -
The effect of cobalt-chloride on the production parameters and homogenity of barramundi (Lates calcarifer) larvae
21-25Views:211Barramundi (Lates calcarifer) is a predatory fish species native in Southeast Asia and Australia. Based on the geothermal potentiality of Hungary the high market potential warm-water fish barramundi can be produced economically. Living nourishment organisms such as Artemia nauplii play an essential role in the larval rearing of barrramundi. However, zooplanktons in natural aquatic enviroments contain minerals in a higher concentration than the usually fed newly hatched Artemia. Therefore the goal of recent study was to investigate the effect of cobaltchloride on the larval growth and survival of barramundi when fed individually and combined with Zn and Mn supplemented Artemia.
In our experiment a 24 hours period was used for the enrichment of newly hatched Artemia nauplii with cobalt chloride in itself, as well as in combination with zinc sulphate and manganese chloride. A total of 1900 barramundi larvae from 15–30 day post hatching were fed with supplemented Artemia in 9 groups of treatments in duplicate. The growth performance and elemental concentration of 40 larvae from each group was determined. All the groups produced significantly improved growth compared to the control (p<0.05). The lower concentration of individual Co supplementation resulted in a higher growth performance while the opposite dose relation occured when combined the Co with Mn. Cobalt had a significant negative effect on the Mn uptake of the larvae – significantly higher Mn accumulation compared to the control group was only observed when Mn was fed in itself (p<0.05). In case of Co-Zn-1 and Co-Zn-2 treatments significantly higher Zn concentration was measured than in the others (p<0.05).
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Association analysis of TNNI1/XbaI polimorphism on carcass quality in hybrid pigs
59-62Views:199The contractile protein, which is encoded by troponin I 1 (TNNI1) gene, is located on the thin filaments of slow fibres in striated muscle. TNNI1 protein is a part of the troponin complex which plays an important role in regulation of muscle contraction by preventing actin-myosin interaction in absence of calcium. According to biological role, this gene can be potential marker for meat production related traits. The aim of this study is to define whether the previously reported gene polymorphism (EU743939:g.5174T>C) is connected with the slaughter traits measured in a standard slaughterhouse of the examined four-line European hybrid. The study included data from 404 gilts and barrows from 2 different samples. The polymorphism was detected using PCR-RFLP (Polymerase Chain Reaction-Restriction Fragment Length Polymorphism) method with XbaI restriction enzyme. In this study the allele frequencies were found as follows: C: 0.84 and 0.808; T: 0.16 and 0.192. Based on result of the present study no significant impact of polymorphisms on production parameters was found.
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Influence of H-FABP gene polymorphisms on slaughter value of hybrid pigs
55-60Views:243The H-FABP gene was defined as a potential candidate gene influencing the fat deposition traits, primarily the intramuscular fat content. The aim of this study is to define whether the previously reported gene mutations are connected with the slaughter traits measured in a standard slaughterhouse. The study included data from 405 gilts and barrows from 2 different samples. The two chosen mutation (HFABP1: c. 103 T>C, HFABP2: c. 1970 T>C) were detected in one reaction with PCR-RFLP (Polymerase Chain Reaction-Restriction Fragment Lenght Polymorphism) method with HinfI restrictoin enzyme. The allel frequencies are as follows: 103T(H)=0.75; 103C(h)=0.25, 1970T=0.32; 1970C=0.68. A HFABP1 mutation has significant effect on backfat thickness and lean meat % at stable 1 (sample 1), but there were no effect at stable 2 (sample 2). The analysis of values of production traits, depending on HFABP2 genotype did not reveal significant differences. Based on this study we can’t get a clear conclusion on the impact of polymorphisms on production parameters. In the examined flock the allele frequency of mutation in 5 'UTR is identical to the literature data, i. e. the more favorable variant regarding the intramuscular fat content is predominant in the population.
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Possibilities of mass valuation in land use in Hungary
59-68Views:176Technological development makes it possible to simplify and accelerate decision-making processes by adequately processing and evaluating large volumes of data. Sub-data obtained from large data sets have a very important practical role in asset valuation, forecasting and valuing delineated or difficult-to-map areas, or in the context of portfolio management. Land valuation is a separate segment within asset valuation and it requires a specific methodological approach on behalf of evaluators. In this study, the authors compared the transaction data of arable land and the value of other land use categories. Based on empirical assessments, the authors developed proposals for the fast and cost-effective determination of the value of land use categories other than arable land - mainly meadows and pastures.
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Effect of feeds with different crude fiber content on the performance of meat goose
5-8Views:391In the last 50 years, poultry meat production has increased dynamically. The role of crude fiber content in feed is unclear based on a small amount of literature about goose feeding.
The aim of theis experiment was to determine how various crude fiber content (55; 60; 65g crude fiber/kg feed) influences the performance of meat geese in the second phase of the rearing period. 150 goslings (3 treatments, 5 cages/treatment, 10 birds/cage) were included in the test. The experiment started and finished at the age of 21st and 63rd day, respectively.
The obtained results suggest that various crude fiber content did not influence the performance of meat geese significantly; however, a feed of 55g crude fiber/kg resulted in better fattening results (final body weight, body weight gain, specific feed protein and energy conversion rate). In addition, compound feed of 65g crude fiber/kg proved more favourable with respect to cost-efficiency. Based on the obtained results so far, further models and farm experiments are required.
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Use of essential trace elements enriched Artemia in the larval rearing of barramundi (Lates calcarifer)
11-16Views:165Artemia is a vital nutriment in the rearing of barramundi (Lates carcarifer), however it’s mineral trace element content does not cover the requirements of the larvae. In our experiment the assumption was wether the cobalt, zinc and manganese concentration of Artemia could be increased during a 24 hours of enrichment period, as well as we wanted to investigate the resulted interactions between the elements. For this purpose 50, 100 and 1000 mg l-1 cobalt-chloride treatements (Co50, Co100, Co1000) were applied while in the case of 50 and 100 mg l-1 treatments the enrichment was also complemented with zink-sulphate and manganese-chloride in the same concentrations. According to the results the zooplankton were able to accumulate cobalt in higher amount, and yet zinc and manganese had no significant effect on each other, a strong synergistic effect occurred between cobalt and manganese. After the enrichment period the impact of essential trace element supplemented live feed on the survival and growth of barramundi larvae was also studied. The experiment was carried out by using 15 days-old larvae applying a total of 9 treatments for two weeks (Control, Co50, Co100, Mn50, Mn100, CoZn50, CoZn100, CoMn50, CoMn100), in duplicates. Considering the per cent of survivals, no significant difference was observed between the treatements (P>0.05). In the case of CoMn50 and CoMn100, the loss statistically increased (P<0.05) compared to the Control (80.5±4.95%) group. Our results show, that the Mn100 and CoMn100 treatements resulted in ignificantly higher (P<0.05 ) in divid ual bod y w eight s, how ever taki ng the survival also into consideration the Mn100 treatements proved to be the most
effective. -
A földhasználat alakulása az ezredfordulón - egy felmérés eredményei
58-66Views:99There were no significant changes in land ownership and use in 2000, compared to the period following the compensation process. Land is mainly owned by people who do not want to use their property, so they generally turn to renting it out to others. Although farming on rented land is performed under various conditions, farms try to rent the lands of better quality. In general, examined farms would like to increase their size by tenancy or land purchase. Buying land is a good investment, considering the price increase in the future, but because of the lack of capital, tenancy remains the main form of territory increase.
Farms which rent land are in connection with a lot of owners, the land within their use is frittered away, it is in a lot of parts. Most rental contracts are written, but the ratio of oral contracts is still quite high. To reduce this ratio is one future aim. One more characteristic of the rental contracts is the dominance of a medium length period – which is acceptable for both the owner and user, but the ratio of short time contracts is still high. Land rent, on average for the examined farms, is quite balanced, it is on the level of about 16.000 HUF/hectare.
The land users mainly pay the same land rent to the owners, but in some cases, there are exceptions. Generally, land rent is a fix cost, but sometimes this cost depends on the level of the yield or the change of product price. Land rent, on average, is 16% within the production costs on the examined farms, which try to choose better and larger lands for rent. Sometimes, farmers can pay higher land rent for the unit of better land, but this is not a general tendency. It is mainly true that they pay the same land rent for the unit, regardless of land quality. Land owners can not interfere in the use of their land within the rental period, and also is a main characteristic of contracts that important particulars are not spelled out sufficiently by the partners. It follows that their content has to be improved in the future.