Castration of male animal's leads to a reduction in aggressive behavior, which animals will avoid wasting energy resulting to economic production of the animal, grows. It also reduces damage and bruising animals and increases normed meat producing at slaughter. In this study, 20 lambs Ghezel breed in four age groups, group 1: one month (n = 4), group 2: two months (n = 4) Group 3: three months ...

this study was investigate the effects of two levels of metabolism energy (me) and length of fattening periods on performance and growth characteristics of chalishtori male lambs. 64 ram lambs were weaning and intake diets with two levels of energy include: 2.5 and 2.3 mcal me/kg dm in 90 and 120 days fattening period. in this study used of completely random designs with 2×2 factorial methods (...

The experiment was performed with a total of 180 day-old, ROSS 308 combination, meat-type hybrid chickens that were divided according to sex into the control group (C1 and C2 with 30 and 30 , respectively) and two experimental groups: GLY-P1 and P2 with pure glycerol (30 and 30 ), and GLY-R1 and R2 with raw glycerol (30 and 30 ). The chickens received three feeding mixtures during the experimen...

Scientific investigations of production losses in pigs due to roundworms are rarely conducted in commercial farms, despite the fact that this information is needed to decide whether anthelmintic treatment is cost-effective or not. Therefore, the aim of our study was to compare performance in fattening pigs treated or not treated for Ascaris suum infections. Two Danish pig farms producing fatten...

The aim of the study was to determine effect Cu and Zn chelates on levels these microelements in blood broiler chickens successive weeks rearing. re-search material Ross 308 chickens. carried out two buildings with 30,000 each. From each building, 50 were randomly selected form experimental control groups. Blood for analysis collected from wing vein every 7 days, first day fattening 42. In grou...

In farm animals, salivary cortisol has become a widely used parameter for measuring stress responses. However, only few studies have dealt with basal levels of concentration of cortisol in pigs and its circadian rhythm. The aim of this study was to examine the effects of ambient temperature and thermoregulatory behaviour on the circadian rhythm of salivary cortisol levels in fattening pigs. Sub...

The aim of the study is to evaluate different production systems in pig farming including economic, animal welfare and environmental aspects with computer simulation. The computer model considers a vertically integrated system with farrowing, weaning, fattening and slaughtering stage as well as the transportation of pigs between theses stages. Housing systems were distinguished in individual an...

Abstract Studies of biogas productivity broiler chicken manure and fattening pig collected at the enterprises Belgorod region Russia were carried out. The specific yield from was 0,449±0,014 m 3 /kg organic matter (oDM), methane – 0,256±0,008 oDM, 0,300±0,006 0,185±0,005 respectively. annual these substrates in calculated. energy potential conversion into determined: total electric will be 9.33...

Castration of male animal's leads to a reduction in aggressive behavior, which animals will avoid wasting energy resulting to economic production of the animal, grows. It also reduces damage and bruising animals and increases normed meat producing at slaughter. In this study, 20 lambs Ghezel breed in four age groups, group 1: one month (n = 4), group 2: two months (n = 4) Group 3: three months ...