Details

Autor(en) / Beteiligte

• de Menezes, Gustavo Chamon de Castro
• Valadares Filho, Sebastião de campos
• Lopez-Villalobos, Nicolas
• Ruas, José Reinaldo Mendes
• Detmann, Edenio
• Zanetti, Diego
• Menezes, Arismar de Castro
• Morris, Stephen
• Mariz, Lays Débora Silva
• de Duarte, Marcio de Souza

Titel

Effect of feeding strategies on weaning weight and milk production of Holstein × Zebu calves in dual purpose milk production systems

Ist Teil von

• Tropical animal health and production, 2015-08, Vol.47 (6), p.1095-1100

Ort / Verlag

Dordrecht: Springer Netherlands

Erscheinungsjahr

2015

Quelle

MEDLINE

Beschreibungen/Notizen

• The objective of this study was to evaluate the effect of five feeding strategies on calf weaning weight, and cow milk production and composition in Brazilian Holstein × Zebu cows. A total of 60 cows and their calves were allocated to each of five treatments. Cows in treatments 1, 2 and 3 were milked for 270 days and cows in treatments 4 and 5 were milked for 180 days. Calves in treatment 1 (CON) were not supplemented with concentrate whereas calves from treatment 2 (CLPN) received 1 kg of concentrate daily from 90 to 270 days of age and calves from treatment 3 received 1 kg of concentrated from 180 to 270 days of age. Calves in treatment 4 (CCPS) were supplemented with 1 kg of concentrate from 90 to 180 days of age and calves in treatment 5 (CLPS) were supplemented with 1 kg of concentrate from 90 to 270 days of age. Calves from the CLPS treatment had greater milk and protein intakes (P < 0.05) and greater growth rate than calves from the other treatments. Our results indicate that the traditional system of feeding calves with no concentrate results in a weight gain of 600 g/day. The CLPS treatment produced calves with the highest live weight and growth rate. The nutritional strategy with restricted supply of milk for the calves with concomitantly short-term concentrate supplementation does not improve performance of calves but did increase feed costs.