[Influence of the amount of concentrate feeding on concentrate intake and development of body weight and growth parameters of suckling foals from birth until the 6th month of life].
OBJECTIVE
The objective of this study was to investigate the effects of a different energy supply on the development of Warmblood foals with a focus on examining the recommended allowances of the German Society for Nutrition Physiology.


METHODS
Two groups of foals received different amounts of concentrates from the 1st until the 6th month of life. With regards to the total energy content, the rations were composed to either comply with the recommendations (6) (group "Norm", n=15) or to exceed those by approximately 20% (group "Zulage", n=16). The supply with concentrates of the group "Norm" aimed for a total energy intake of 73 MJ DE/animal/day, the intake of the group "Zulage" of 87 MJ DE/animal/day. Both groups were provided with the same amount of foal starter feed, but different amounts of oats. Both groups were supplied with 1.0, 1.2, 2.0, 2.0 and 2.35 kg foal starter feed per animal and day from the 2nd until the 6th month of life. Additionally, 0.6, 0.7, 0.5, 0.8 and 0.45 kg oats per animal and day (group "Norm") and 1.8, 2.0, 1.75, 2.0 and 1.75 kg (group "Zulage") were offered during months 2 to 6. The animals were fed twice daily. The roughage consisted of a late first cut of haylage. The animals were out to pasture for several hours/day. Individual concentrate intake, body mass and body condition score (BCS) as well as several other growth parameters were recorded. The total amount of haylage consumed by all animals was documented.


RESULTS
The daily average intake of concentrates lay between 0.4 ("Norm") and 0.5 kg ("Zulage") in the 2nd month and between 2.8 ("Norm") and 3.7 kg ("Zulage") in the 6th month. The groups did not differ in any recorded parameter. The amount of concentrates offered was entirely eaten for the first time at an age of approximately 180 days.


CONCLUSIONS
The results suggest that the energy requirements of foals are approximately 10-20% lower than the recommendations.
Lehrstuhl für Tierernährung und Diätetik, Ludwig-Maximilians-Universität München, Schönleutnerstraße 8, 85764 Oberschleißheim. Kienzle@tiph.vetmed.uni-muenchen.de
J K
JK
Mack
H P
HP
Remler
E
E
Senckenberg
E
E
Kienzle
D000821:Animal Feed / Q000145:classification*; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D000833:Animals, Suckling / Q000254:growth & development*; D004435:Eating; D006736:Horses / Q000254:growth & development*; D015430:Weight Gain