期刊
CANADIAN JOURNAL OF ANIMAL SCIENCE
卷 101, 期 2, 页码 234-241出版社
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/cjas-2020-0027
关键词
blend pelleted co-product; carinata meal; canola meal; performance; dairy cow
资金
- Natural Sciences and Engineering Research Council of Canada
- Saskatchewan Agriculture Strategic Research Chair Program Fund
- Guangdong Basic and Applied Basic Research Foundation [2019A1515110780]
The study found that replacing soybean and canola meals with blend-pelleted co-products did not affect the nutrient intake, digestibility, and production performance in high producing dairy cows.
The objectives of this study were to examine the effects of feeding newly developed blend-pelleted carinata meal (BPPCR) and blend-pelleted canola meal (BPPCN) on nutrient intake, digestibility, and production performance of high producing dairy cows. In this study, nine mid-lactating Holstein cows (body weight, 679 +/- 124 kg; days in milk, 96 +/- 22) were used in a triplicated 3 x 3 Latin square study. Within each square, each cow was randomly assigned to one of three treatments: control (typical barley-based diet in Western Canada), BPPCR (soybean and canola meal in the control diet replaced by BPPCR), and BPPCN (soybean and canola meal in the control diet replaced by BPPCN). Each period lasted for 21 d, with the first 14 d as an adaptation period. The total collection of feces and urine were conducted on six cows from two Latin squares. The results showed that there were no treatment effects on milk yield, milk composition, and nutrient intake and digestibility (P > 0.10). The nitrogen balance among the three treatment groups was not different either. In conclusion, replacing soybean meal and canola meal with blend-pelleted co-products did not affect the nutrient intake, digestibility, and production performance in high producing dairy cows.
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