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Nové trendy ve fázové výživě dojnic
REJZKOVÁ, Martina
When feeding dairy cows, quality forage must be the main ingredient. Prolonged feeding of poor-quality feed can lead to metabolic disorders, weak calves, reduced reproductive capacity, mastitis and other problems. Phase feeding is widely used in dairy cattle nutrition because it is probably the best way to meet the nutrient needs of dairy cows at different stages of lactation, even when standing dry. The basis for respecting the physiological needs of dairy cows is the creation of balanced groups of dairy cows. Nutrition is very important, especially in the transition period of dairy cows. That is to say, the 3 weeks before and 3 weeks after parturition, when dairy cows need the best quality feed and, above all, the greatest nutritional care. These six weeks are crucial for maintaining good health, the production and reproductive efficiency of the dairy cow and the profitability of the entire herd. Modern knowledge guarantees higher milk production and better satisfaction of nutrient requirements. In 2021, after almost 20 years, a new standard, NASEM 2021, was published which gives the expected nutrient recommendation for dairy cattle. Other modern findings include the increasing use of robotic milking parlours with automatic feeding, or the use of vitalimeters or pH probes to monitor digestive pro-cesses and overall animal activity.
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Fázová výživa dojeného skotu
SEZIMOVÁ, Kateřina
The bachelor's thesis deals with the phase nutrition of dairy cattle and its effects on the health and reproductive abilities of dairy cows. The literary section not only breaks down the nutrient needs in the various stages of dairy cow sustenance, but also the distribution of feed, feeding technology, feed ration composition, additives and important agents influencing the yield and reproduction of dairy cows. Furthermore, the practice recommendation focuses on the transit period and the need for mineral substances to maintain vitality before calving and even after calving. At the same time, it was stated how welfare, more specifically the stress of moving groups during the transit period, was able to reduce feed intake. When feed intake falls and the stress of moving dairy cows occurs, there are frequent reproductive and metabolic diseases such as mastitis, metritis, sleaze dislocation and more.
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Analýza úrovně výživy a vybraných ukazatelů v daném zemědělském podniku
FALTUSOVÁ, Tereza
The nutrition of dairy cows affects their yielding, health condition, fertility, and the overall economic results of the holding. Essential for the nutrition of dairy cows is the quality of the roughage, which affects the cost of feeding ration of the dairy livestock. This work evaluated the quality of fodder and its influence on selected indexes of a chosen agricultural holding during the year 2020. The evaluation concerned a Holstein cattle herd with an average quantity of 447 dairy cows. As mentioned above, the feeding ration affects the yielding of dairy cows. With the right amount of nutrients (nitrogen substances, energies, carbohydrates, fibre, fats, and mineral substances) in the feeding ration we might achieve higher amounts of components in milk (fat, proteins, and lactose). If the feeding ration is suitably designed, health issues (metritis, mastitis, and limping) do not occur in the herd. The fodder quality, yielding, and health condition of the herd affect the economics of the holding. The base for the feeding ration was roughage, which constituted 54 % of the feeding ration. Specifically, corn silage and protein silage constituted 27 % of the fodder dry mass. The milk components showed an average amount of 4,11 % of fat and 3,45 % of protein. The costs of 1 l of milk were in the year 2020 9,52 Kc/1 l on average and the purchase price of milk was 8,69 Kc/1 l on average.
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Výživa dojnic v průběhu laktace
FALTUSOVÁ, Tereza
This bachelor's thesis deals with the nutrition of dairy cows during lactation. A brief description is also given to the physiology and morphology of the digestive system of ruminants. It characterizes phase nutrition, requirements for nutrients and energy needs for individual periods of phase nutrition, including the need for minerals and vitamins. The work also includes the basic characteristics and the need for individual components in nutrition and subsequently any possible disorders caused by their deficiency or improper nutrition.
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Analýza úrovně výživy v daném zemědělském podniku
PLEVKOVÁ, Jaroslava
This diploma thesis isfocused on nutrition and feeding of dairy cows. It deals with theis sue of nutrient and energy needs for dairy cattle and their importance in dairy cow nutrition, as well as feeds used for dairy cows and feeding technology. There is a literatur ereview of theseis sues and an analysis of the level of nutrition in relation to milk production in the surveyed company. In this company I also evaluated economicin dicators.
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