Original scientific paper
https://doi.org/10.33128/k.65.2.4
The influence of nucleotides, soy protein and individual amino acids in the starter mixture on external characteristics of calves
Zvonimir Steiner
; Fakultet agrobiotehničkih znanosti Osijek, Sveučilište J. J. Strossmayera u Osijeku Vladimira Preloga 1, 31000 Osijek, Hrvatska
Stipo Benak
; Belje plus d.o.o., Industrijska zona 1, Mece, 31326 Darda, Hrvatska
Josip Novoselec
; Fakultet agrobiotehničkih znanosti Osijek, Sveučilište J. J. Strossmayera u Osijeku Vladimira Preloga 1, 31000 Osijek, Hrvatska
Željka Klir Šalavardić
orcid.org/0000-0003-4078-6864
; Fakultet agrobiotehničkih znanosti Osijek, Sveučilište J. J. Strossmayera u Osijeku Vladimira Preloga 1, 31000 Osijek, Hrvatska
Ivana Prakatur
; Fakultet agrobiotehničkih znanosti Osijek, Sveučilište J. J. Strossmayera u Osijeku Vladimira Preloga 1, 31000 Osijek, Hrvatska
Mario Ronta
orcid.org/0000-0003-0858-7566
; Fakultet agrobiotehničkih znanosti Osijek, Sveučilište J. J. Strossmayera u Osijeku Vladimira Preloga 1, 31000 Osijek, Hrvatska
*
* Corresponding author.
Abstract
The aim of this research was to compare the effect of adding soy protein, nucleotides and individual amino acids to the starter mixture for calves on the external characteristics and body weight of calves. The experiment was conducted on 20 animals evenly distributed in two groups, control (K) and experimental (P), where each group had an even ratio of male and female calves. The research lasted from calving to the average age of 91 days. Monitoring of body measurements was performed on four occasions with the help of Lydtin’s stick and measuring tape. Measurements and weighing were performed at 6, 24, 50 and 91 days of average age. The following indicators were determined: body mass, body length, withers height, body barel, chest girth, chest width, chest depth, hip height and hip width. Based on the obtained values of body measurements, the index of anamorphosis, body compactness and body length-chest were calculated. Calves were fed fresh unpasteurized whole milk in two meals a day, 3 L in the morning and 3 L in the evening. Solid food in the form of pelleted starter mixture and water were offered ad libitum from the fourth day of age until the average age of 63 days. Yeast nucleotides, soy protein concentrate and two limiting amino acids, methionine and lysine, were added to the starter mixture of the experimental group. After that, the calves were fed once a day a transitional meal for 3 days. Calves from both groups were fed TMR once a day until the 91st day of age. The total amount of ration offered was 4.1 kg DM/calf/day. In the obtained results, no statistically significant difference was found for the observed indicators, only the values of the anamorphosis index tend to be higher (P = 0.055) in the control group. According to the obtained results, it can be concluded that the addition of soy protein, nucleotides and limiting amino acids did not significantly affect most of the observed indicators in calves. Further research is needed to determine their effect.
Keywords
calves; soy protein; nucleotides; amino acids; body measurements
Hrčak ID:
309974
URI
Publication date:
6.10.2023.
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