Characterisation and effects of a xylanase enzyme preparation extracted from Thermomyces lanuginosus cultures

This paper describes the production of an enzyme preparation from the fungus Thermomyces lanuginosus. Thermal resistance, pH stability and lignocellulolytic activity of the enzyme preparation high in xylanase were studied on a variety of grains and forages. The enzyme preparation preserved more than 70% of its original xylanase activity for 4 and 1 h at 60 and 70 °C, respectively. The xylanase activity remained over 80% when the preparation was incubated for 30 min at pH 4.5. In vitro digestibility studies indicated that the enzyme digested 7.5, 8.5 and 8.0% of the dry matter (DM) of barley meal, wheat bran and oat meal samples, respectively. When applying 60-min incubation, 7.5, 7.3 and 8.4% of DM of the oat straw, alfalfa hay and triticale straw was digested, respectively. When the time of digestion was increased to 360 min, the sunflower hull showed 15.8% DM digestibility

Dairy welfare in Hungary and in the United Kingdom vs. National and European Union legislation

Dairy industries in Eastern and Western Europe have different history, heritage, but the same aim to produce cheap, high quantity of good quality milk with the care of dairy welfare. Member countries of European Union had choice to either implement minimum standards provided by the European Commission, like in Hungary, or to create their own legislation also covering minimum standards, like in the Great Britain. British, Hungarian and European Union legislation was compared with dairy welfare measures taken on 53 farms in the UK and on 27 farms in Hungary. Among 13 welfare measures observed 8 were found to be statistically different (p&lt;0.05. p&lt;0.01 or p&lt;0.001) between countries. Fewer cows were reported with dirty hind limbs, hock hair losses, non hock injuries, being dull or with greater flight distance on Hungarian farms than in the UK. There were fewer cows with dirty udders, being fat or lame in the UK in comparison to Hungarian farms. Cheaper bedding materials in Hungary are thought to be the major factors cows are found cleaner. More farm workers per one animal make more attention is paid for providing cattle with suitable conditions for resting what also might impact shorter flight distance. In the Great Britain cleaner udders might be related to modern husbandry systems providing cleaner conditions. Education is also thought to be playing a great role in lower proportion of cows being lame, with digestion problems and mastitis in the UK in comparison to Hungary.</jats:p

Effects of a non-starch polysaccharidase enzyme preparation from Thermomyces lanuginosus on energy and protein metabolism and milk yield of dairy cattle

Non-starch polysaccharides (NSPs) form an integral part of the cell walls in plants and represent considerable available energy when degraded into absorbable mono-, di-, tri- and oligosaccharides. The ruminal microflora hydrolyses a good part of NSPs, however, recently there have been attempts to enhance the rate of utilisation by using external polysaccharidase enzymes. In the present study the effects of an enzyme preparation (Rumino-Zyme) high in xylanase activity were studied on ruminal volatile fatty acid (VFA) concentration, parameters of energy and protein metabolism, milk yield, feed conversion ratio (FCR) and body condition score of high-yielding dairy cows. A lignolytic enzyme preparation produced by the thermophilic fungus Thermomyces lanuginosus was applied in the present experiment and fed to dairy cows at 34 g/day dosage in the period between calving and the 110th day of lactation. This preparation increased VFA concentration in the rumen from about 32 days after calving and onward. Increased VFA concentration was followed by an about 5 to 10% increase in milk production and an almost 0.1% increase in butterfat production. Increased VFA concentration produced more balanced energy metabolism in the experimental cows as indicated by the lower incidence rate of hyperketonaemia, and lower acetoacetic acid and non-esterified fatty acid (NEFA) concentration in the blood of the experimental cows. Aspartate aminotransferase (AST) activity was tendentiously higher in the control group and the proportion of cows that had AST activity higher than 100U/l was also higher in the control group. Both control and experimental cows showed balanced protein and acid-base metabolism throughout the experiment. Enhanced VFA concentration contributed to an improvement in energy balance in the experimental cows with a resultant improvement of feed intake and feed utilisation. Due to the more balanced energy metabolism postparturient body condition loss of the treated cows was reduced

Study of animal welfare status in dairy cow herds in Hungary

Animal welfare is a hot topic among consumers, producers and researches nowadays. The major welfare problems of dairy cows are mastitis, lameness, and any conditions which lead to impaired reproduction, inability to express normal behaviour, emergency physiological responses or injury. This paper summarizes preliminary results of project taken in 27 Hungarian dairy farms evaluating general animal welfare. The most important areas for improving animals? wellbeing are related to facilities and comfort of resting. Findings include slippery floors, cows struggling laying and standing in cubicles. Other measures include hair loss, hocks, neck rail injuries and number of thin cows (Body Condition Score 1 and 2). Mouldy silage and low quality of other feedstuff was also found. In conclusion, preliminary results confirm strong demand for monitoring farms and discussions with managers and farmers about welfare measures needed to be taken on farms immediately.</jats:p

Analysis of lameness traits and type traits in Hungarian Holstein-Friesian cattle

Lameness is an important factor for culling animals. Strong legs and feet improve herd life of dairy cows. Therefore, many countries include leg and feet conformation traits in their breeding programs, often as early predictors of longevity. In the study 609 cows from 5 farms were observed for a year for correlation between lameness and conformation traits. Among the type traits, rear leg side view (0.30), rump angle (0.18), back teat placement (0.18) and front teat placement (0.18), had the strongest associations (P&lt;0.05) with clinical lameness. Low leg angle, low rump angle, back and front tits pointing inside were associated with increased clinical lameness. Correlations with strength and body depth ranged from 0.12 to 0.14, indicating that heavier cows were slightly more prone to clinical lameness. Practical implementation of higher selection pressure on rear leg side view is recommended.</jats:p