Productivity of growing rabbits for use of forrage with different zinc content

Abstract

The results of studies on the optimal level of zinc, which are additionally introduced into feed for rabbits grown for meat, are presented. Experimental researches were conducted in the conditions of the problematic research laboratory of feed additives of the National University of Life and Environmental Sciences of Ukraine. A scientific and economic experiment was carried out on young rabbits of HYLA hybrids of the French company EUROLAP. The study was conducted by group method. In the 42-day age, 60 rabbits were selected, out of which, according to the analogues principle, three groups were formed – one control and two experimental, with 20 rabbits (10 females and 10 males) in each. The research lasted for 42 days. It was used full-grain granulated feed for feeding the experimental young rabbits, which according to the chemical composition differed in content of zinc in them. Rabbits of the control group received feed containing zinc 50 mg/kg, the second – 100 mg/kg, the third – 150 mg/kg. It was established that feeding of rabbits in the 43–84-day-old age with feed containing zinc 100 mg/kg contributes to an increase in body weight by 2.9%, and an increase in average daily growth during the growing season, respectively, by 4.7%. Feed costs per 1 kg growth in young rabbits consuming feed containing Zinc were 1.0% lower than the control group's young. Rabbits which were fed with feed containing zinc 150 mg/kg were inferior to body weight and average daily increments, respectively, by 1.4% and 2.7% of animals fed with a feed with a zinc level of 50 mg/kg.

Influence of iron (IV) clathrochelate complexon quail blood parameters and weight characteristics

“…Modern breeds of farm animals and poultry, selected for their high growth rate and egg production, are more sensitive to a variety of stressors. They require the introduction of high levels of vitamins and trace elements into the diet to realize their genetic potential (Dozier et al (2003); Miles et al (2003); Gheisari et al (2011); Shahzad et al (2012); Vasanth et al (2015); ; ; Pozniakovskyi et al (2018). The main directions of modern approaches to the study of the normalization of the physiological potential of animals / birds are a development of optimal conditions of confinement with limitation of adverse environmental factors, breeding work for the creation of rocks with high immunological status and pharmacological correction with the use of drugs of relevant pharmacological groups.…”

Evaluation of rabbit young stock grown using starter compound feed by growth intensity and functional state of the body

“…Варто зазначити, що при відсадці кроленят від кролиць у перші два тижні їх самостійного життя їм згодовують ті ж самі корми, які вони одержували в підсисний період. Новий корм до їхнього раціону вводять поступово, замінюючи не більше ніж його третину (Bala et al, 2009;Vakulenko et al, 2016;Pozniakovskyi et al, 2018;Boiko et al, 2020Boiko et al, , 2021Fedorchenko, 2021;Lesyk et al, 2022;Gutyj et al, 2023).…”

Growth performance, tissue precipitation, metallothionein and cytokine transcript expression and economics in response to different dietary zinc sources in growing rabbits

“…One was the control group (basal diet with a Zn-free vitamin-mineral premix). The zinc treatments were supplemented to a basal diet at a 50 mg/kg level with zinc oxide (ZnO, as inorganic source), Zn-methionine (Zn-Met, as organic source) and zinc oxide nanoparticles (nano-ZnO) as the dose recommended according to Pozniakovskyi et al, (2018). All Zn sources were obtained from Sigma Company, Egypt.…”