The effects of calcium hydroxide–treated whole-plant and fractionated corn silage on intake, digestion, and lactation performance in dairy cows
Open accessAbstract
The objective of this trial was to evaluate, in dairy cattle, the effects of calcium hydroxide treatment of whole-plant corn and a treatment applied to the bottom stalk fraction of the corn plant, achieved by harvesting corn in 2 crop streams. The treatments were calcium hydroxide-treated corn silage (TRTCS), toplage supplemented with calcium hydroxide-treated stalklage (TPL), a positive control of brown midrib corn silage (BMR), and a negative control of conventional whole-plant corn silage (WPCS). The toplage was harvested at a height of 82 cm with 2 of the 6 rows set as ear-snapping to incorporate higher tissues into the stalklage. Stalklage was harvested at 12 cm, and other corn silages were harvested at 27 cm. Sixteen pens, each with 8 Holstein cows averaging 70±25 d in milk and 46±11 kg of milk d(-1), were assigned 4 per treatment in a completely randomized design. The diet was approximately 40% corn silage, 20% alfalfa silage, and 40% concentrate on a dry matter basis. A 2-wk covariate period with conventional corn silage was followed by an 8-wk treatment period in which the 4 corn silage treatments were the only effective difference in diets. Cows fed TPL and TRTCS consumed more (1.9 and 1.4 kg of organic matter d(-1), respectively) than did cows fed WPCS. Milk yield was greater for cows fed BMR, TPL, and TRTCS. Cows fed BMR and TPL produced 2.9 and 2.7 kg d(-1), respectively, more energy-corrected milk (ECM) than cows fed WPCS, and cows fed TRTCS had the greatest ECM production (4.8 kg of ECM d(-1) greater than cows fed WPCS). No differences in body weight or body condition scored were observed. Milk fat concentration was similar among treatments and milk protein concentration was reduced for TRTCS. Starch and neutral detergent fiber digestibility were greater for cows fed TRTCS.
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Alkali-treatment of whole-plant corn silage and fractionated whole-plant corn silage were successful at improving intake and milk production by dairy cows similarly to the well-established effects of brown midrib whole-plant corn silage.
“Overall, alkali-treatment of WPCS and fractionated WPCS were successful at improving intake and milk production by dairy cows similarly to the well-established effects of BMR WPCS.”
From Silage review: Recent advances and future technologies for whole-plant and fractionated corn silage harvesting (2018) · cites this paper as Cook et al., 2016
Fractionation of corn plants at harvest could be used as a tool in ration formulation; for example, by separating and feeding the less digestible fraction, the stalks, to animals of lower energetic demand.
“Cook et al. (2016) suggested this fractionation of corn plants at harvest could be used as a tool in ration formulation; for example, by separating and feeding the less digestible fraction, the stalks, to animals of lower energetic demand (i.e., heifers, far-off dry cows).”
From Silage review: Recent advances and future technologies for whole-plant and fractionated corn silage harvesting (2018) · cites this paper as Cook et al., 2016
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- Authors
- Cook, D. E., Bender, R. W., Shinners, K. J., & Combs, D. K.
- Affiliations
- University of Wisconsin–Madison (US)
- Corresponding author
- Combs, D.K.
- Venue
- Journal of Dairy Science
- Publisher
- American Dairy Science Association
- Published
- 2016-07
- Volume
- 99
- Issue
- 7
- Pages
- 5385-5393
- ISSN
- 0022-0302 (ISSN-L)
- OpenAlex
- W2346240381
- Semantic Scholar
- 8e5beac97b53b462539636608bb10d675cd6f4ee
- Cited by
- 9
- References
- 30
- Citations by year
- 2024: 1 · 2022: 1 · 2021: 1 · 2020: 2 · 2019: 2 · 2018: 1 · 2017: 1
- FWCI
- 2.74
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Journal of Dairy Science (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Ruminant Nutrition and Digestive Physiology
- Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Crop Yield and Soil Fertility
- Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Nutrition and Physiology
- Keywords
- calcium hydroxide treatment, corn silage, whole-plant corn, dairy cattle, milk yield, feed intake, starch digestibility, neutral detergent fiber digestibility, milk protein, milk fat, Holstein cows
- MeSH terms
- Alkalies, Animals, Calcium Hydroxide, Cattle, Zea mays, Dairying, Diet, Dietary Fiber, Feeding Behavior, Female, Lactation, Milk, Random Allocation, Silage, Dietary Supplements
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