Effects of mineral supplementation on qualitative beef parameters

Abstract

Correct nutrition with sufficient amount of optimal doses of microelements efficiently supports high levels of beef production and health of the animals throughout the feeding period. In the sphere of beef production, microelements are needed as additional supplements to play an important role in the productivity of cattle and the quality of the products made from them. Providing cattle with a more bioavailable source of deficient microelements could increase the metabolic process of the main nutrients, which would affect the intensity of bull growth and slaughter meat parameters. It has been revealed that organic complexes of deficient microelements have greater bioavailability. Throughout the experiment, Ukrainian Black Spotted bulls of 175–200 kg live weight were fed with diets enriched by chelate compounds of microelements with lysine and methionine. Animals of the second group were fed a diet with methionates of microelements in the following doses, mg/kg of live weight: iron – 0.05, cobalt – 0.04, iodine – 0.05 and selenium – 0.02; the third group received lysinates in the same doses of microelements; and the fourth group was given lysinates and methionates in a complex with half-doses of microelements. The studies were carried out using the following methods: zootechnical (productivity), biochemical (chemical blood composition), morphological (weight and sizes of certain tissues and internal organs), physical-chemical and sanitary meat parameters and statistical (mean arithmetic value and its error, significance level of difference between parameters). We found evidence and confirmed the benefits of using microelement supplemention with essential aminoacids in the bulls’ diet. Feeding chelate supplement to animals during the second feeding period improved hematological parameters, the productivity and nutrition value of beef. We determined that the best outcomes resulted from feeding bulls with lysinates and methionates in complex with microelements (Fe, Co, Se and I) during the second feeding period. The animals had 26.0% higher mean daily increments and 11.1% greater growth rates, and they grew 25.8% more intensively than the others that consumed only the main diet. The animals of this group had 5.2% higher slaughter yield and 4.8% higher carcass yield. The experimental groups were observed to have lower number of microorganisms in the longissimus layer in one field of view when analyzing impression smears. After 14 days of beef storage, qualitative reactions in the control group were positive with formaldehyde, sulphuric-acid copper, Nessler’s reagent and negative with benzidine. The reactions in the samples from experimental groups were doubtful. Less deterioration of beef stored at low positive temperatures (0…+2 ºС) was observed for the samples of experimental groups.

Meat productivity and quality of meat and liver of broiler chickens after consuming diet with mineral supplements containing chelates of cuprum, iron, zinc, and manganese

“…The main objective of modern animal farming is achieving maximum productivity through realization of the genetic potential and survival of the populations, decrease in production costs, and production of highquality meat. Studies by Yaremchuk et al (2022) and Farionik et al (2023) confirmed the importance of correcting the animals' diets with mineral premixes for more intensive growth and enhancement of meat quality. One of the key tendencies in the development of poultry farming has been not only continuous improvement of meatiness, but also improvement of the quality characteristics of the produced meat.…”

Effect of additives with chelated forms of trace minerals on growth performance of broiler chickens, feed nutrient digestibility, and carcass characteristics

“…The live weight of broiler chickens on day 8 in all three groups was almost the same at 230.2-239.5 g. Over the next week, after the introduction of the additives under study into the diet, the poultry began to grow more intensively and in the second group the live weight of chickens was 97% higher (at p<0.001), in the third group -by 10.5%. The absolute increase in live weight during the period of feeding the starter feed (days [3][4][5][6][7][8][9][10][11][12][13][14][15] was 11.7% higher in the second group (p<0.01), and 12.7% higher in the third group (p<0.001) compared to the data in the control group. The relative increase in live weight, which characterises the growth rate, during this period of poultry rearing with the introduction of the additive "Kronocid-L" to the diet is 3.3 p.p.…”

Effect of dry extract from Saccharomyces cerevisiae culture with selenium-containing amino acids on the productivity and chemical composition of meat of broiler chickens

“…Among the biologically active compounds, those preferred are compounds of natural origin, including mineral. Analysis of the literature indicates that animal nutrition uses a large amount of mineral feed supplements (Surai, 2002;Razanova, 2022;Farionik et al, 2023). Mineral components of the diet play an important role in the metabolic processes of the cells, regulate homeostasis, acid-base homeostasis, and osmotic pressure.…”