Publication Date
1985
Location
Kyoto Japan
Description
The objective of the experiment was to study the utilization of grass silage by growing bulls. Between the age of 68-434 days, 63 bulls took part in an experiment in which as supplements to timothy silage were 1) barley 2) barley+ protected protein concentrate and 3) protected protein concentrate only. The effects on· silage intake and live weight gain of the bulls were measured. In each feeding group there were 21 bulls. The concentrate contained 30% digestable crude protein of which 72% from soya-bean meal, 18% from rapeseed meal and 10% from milk powder. The protein of the concentrate was protected by formaldehyde (Farmline). As a result of mixing barley and protein concentrate in group 2 the daily intake of silage and the energy and protein supply were significantly increased, compared with group 1, which only received silage and barley. In group 2 the feed conversion rate was 4.47 f.u./kg gain (3.53 ME MJ/Kg gain) and in group 1 4.70 f.u./kg (3.79 ME MJ.kg gain). The difference was significant. Group 3, which received silage and protein concentrate suffered from deficiency of energy. The average daily live weight gain in group 1 was 950, in group 2 1072 and in group 3 873 g/day. The carcass weight in the respective groups were 198, 221 and 172 kg. The differences between the groups were significant. The dressing % and the quality of carcass in group 3 were significantly lower than in group 1 and2. This experiment proved that extra protein concentrate significantly improves the utilization of grass silage.
Citation
Hakkola, H S., "Barley and Protected Protein Concentrate as Supplements to Timothy Silage for Growing Bulls" (1985). IGC Proceedings (1985-2023). 15.
(URL: https://uknowledge.uky.edu/igc/1985/ses10/15)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Barley and Protected Protein Concentrate as Supplements to Timothy Silage for Growing Bulls
Kyoto Japan
The objective of the experiment was to study the utilization of grass silage by growing bulls. Between the age of 68-434 days, 63 bulls took part in an experiment in which as supplements to timothy silage were 1) barley 2) barley+ protected protein concentrate and 3) protected protein concentrate only. The effects on· silage intake and live weight gain of the bulls were measured. In each feeding group there were 21 bulls. The concentrate contained 30% digestable crude protein of which 72% from soya-bean meal, 18% from rapeseed meal and 10% from milk powder. The protein of the concentrate was protected by formaldehyde (Farmline). As a result of mixing barley and protein concentrate in group 2 the daily intake of silage and the energy and protein supply were significantly increased, compared with group 1, which only received silage and barley. In group 2 the feed conversion rate was 4.47 f.u./kg gain (3.53 ME MJ/Kg gain) and in group 1 4.70 f.u./kg (3.79 ME MJ.kg gain). The difference was significant. Group 3, which received silage and protein concentrate suffered from deficiency of energy. The average daily live weight gain in group 1 was 950, in group 2 1072 and in group 3 873 g/day. The carcass weight in the respective groups were 198, 221 and 172 kg. The differences between the groups were significant. The dressing % and the quality of carcass in group 3 were significantly lower than in group 1 and2. This experiment proved that extra protein concentrate significantly improves the utilization of grass silage.
