National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Vliv výživy na mléčné složky u dojnic
Zmrhal, Vladimír
The individual components of milk are differently influenced by nutrition. Milk fat is the most impressionable component of milk. Its content is largely influenced by structure feeding ration and the amount of fibre in ration, acetic acid originates in which the fermentation as the main precursor of milk fat. Fat composition can be also influenced by feeding fats protected against degradation in the rumen and linseed or rapeseed seed which act to the content of unsaturated fatty acids. Negative effect on milk fat has mainly higher content of starch in feeding ration. Milk proteins are influenced by the amount of microbial protein synthetized in the rumen which is influenced by the ratio of degradable protein and energy feed. On the content of milk proteins act also so-called by-pass protein and nondegradable amino acids. Especially methionine and lysine, which are considered as limiting for the synthesis of milk proteins. The content of lactose is reduced when the organism is in the energy deficit and also by influence of mastitis. The aim of this work is to describe the mechanism by which nutrition act on dairy components.
Eliminace negativního vlivu tepelného stresu u brojlerových kuřat pomocí rostlinných aditiv
Zmrhal, Vladimír
The aim of the diploma thesis was to evaluated the effect of supplementation plant additive based on extracts, from turmeric (Curcuma) and baical skullcap (Scutellaria baicalensis) on broiler chickens exposed to heat stress at the end of fattening. The effect of plant additive on performance parameters, meat quality, lymphatic organ weight, biochemical blood profile, pro and anti-inflammatory cytokine levels, heat shock proteins, leukocyte counts, apparent ileal amino acid digestibility, metabolizable energy and chicken behavior were evaluated. Plant additive fed from the 21st day of chickens age significantly improved (P<0.05) feed conversion ratio at optimal temperatures and significantly increased (P<0.05) body weight gain at elevated temperatures (27–29 ° C). The addition of plant additive has significantly increased (P<0.05) metabolizable energy as well as the apparent ileal digestibility of the amino acids lysine, threonine, arginine, histidine, phenylalanine, valine, leucine, isoleucine, tyrosine, serine, glycine, aspartic and glutamic acid and alanine. Significantly lower (P<0.05) manifestations of thermoregulatory behavior (wings lifting and open beaks) in the experimental group with plant extracts were found in the ethological observation. Results of diploma thesis showed that the addition of a mixture of turmeric and baical scullcap extracts can be used to reduce the negative effects of heat stress on the performance of broiler chickens.

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1 ZMRHAL, Vojtěch
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