Effect of pasture allowance and level of concentrate feeding on the productivity of dairy cows in late lactation
- 1 January 1985
- journal article
- research article
- Published by CSIRO Publishing in Australian Journal of Experimental Agriculture
- Vol. 25 (4), 739-744
- https://doi.org/10.1071/ea9850739
Abstract
This experiment examined the effects of level of concentrate feeding and pasture allowance on the productivity of dairy cows in late lactation. Thirty-two cows in their 8th month of lactation were allocated to eight treatments; these were combinations of two pasture allowances (about 15 and 26 kg DM/cow.day) and four levels of concentrates (0,2,4 kg/cow.day and ad libitum). Milk and protein yields increased linearly with level of supplementation but the response of milk fat yield was curvilinear; peak fat yield occurred at 4 to 5 kg DM/cow.day of concentrates fed. The marginal returns from feeding 1 kg of concentrates were 0.57 kg milk, 0.030 kg fat and 0.022 kg protein from feeding up to 5 kg DM/ cow.day. The different pasture allowances significantly influenced only fat yield; the cows at the higher allowance produced 0.044 kg more fat than did the cows at the lower allowance.Keywords
This publication has 3 references indexed in Scilit:
- Effect of body condition at calving and level of feeding in early lactation on milk production of dairy cowsAustralian Journal of Experimental Agriculture, 1982
- Hay supplements to overcome underfeeding of dairy cows. 2. Late lactationAustralian Journal of Experimental Agriculture, 1981
- Evaluation and calibration of an automated rising plate meter for estimating dry matter yield of pastureAustralian Journal of Experimental Agriculture, 1979