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Akhtar MU, Hifzulrahman, Saadullah M, Pasha TN, Abdullah M, Ahmed M, Shahbakht RM, Haque MN. Effects of prepartum dietary protein level and feed intake on postpartum lactation performance and feeding behavior of multiparous Holstein dairy cows. J Dairy Sci 2021; 104:9886-9901. [PMID: 34218915 DOI: 10.3168/jds.2021-20218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 05/23/2021] [Indexed: 11/19/2022]
Abstract
An experiment was conducted to determine the effects of low and high metabolizable protein (MP) diets when fed for ad libitum and controlled intake during the prepartum period on postpartum lactation performance and feeding behavior of dairy cows. Thirty-six multiparous Holstein cows were blocked by parity, expected calving date, and previous lactation milk yield at -21 d relative to expected calving and were randomly assigned to 1 of 4 close-up period dietary treatments providing low MP (LMP) or high MP (HMP) diets with controlled intake (CNI) or ad libitum intake (ALI). The concentrations of MP were 65 and 90 g/kg dry matter for LMP and HMP diets, respectively, whereas intake was controlled to supply 100 and 160% of the NRC (2001) energy requirements for CNI and ALI groups, respectively. The concentration of net energy for lactation (NEL) in the treatment diets was 1.50 Mcal/kg. All cows were fed a similar lactation diet after calving (1.50 Mcal/kg of NEL and 83.3 g/kg of MP). The HMP diet increased dry matter intake during the first 3 wk and tended to increase dry matter intake over the 9 wk of lactation. Meal size and eating rate increased in the ALI cows during the prepartum period. Meal frequency increased with the HMP diet during the postpartum period. Milk yield increased by 15.2% with the HMP diet over the 9 wk of lactation. The HMP diet increased energy-corrected milk (ECM) yield in CNI versus ALI cows, whereas the LMP diet increased ECM yield in ALI versus CNI cows over the 9 wk of lactation. The increase in ECM yield of LMP-ALI versus LMP-CNI cows was supported by greater body condition loss and serum β-hydroxybutyrate over the 9 wk of lactation. Taken together, these data indicate that prepartum controlled intake of a high protein diet can provide the benefits of both strategies.
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Affiliation(s)
- M U Akhtar
- Department of Animal Nutrition, University of Veterinary and Animal Sciences, Outfall Road, Lahore 54000, Pakistan
| | - Hifzulrahman
- Department of Livestock Production, University of Veterinary and Animal Sciences, Outfall Road, Lahore 54000, Pakistan
| | - M Saadullah
- Department of Livestock Production, University of Veterinary and Animal Sciences, Outfall Road, Lahore 54000, Pakistan
| | - T N Pasha
- University of Education, College Road, Township, Lahore 54770, Pakistan
| | - M Abdullah
- Department of Livestock Production, University of Veterinary and Animal Sciences, Outfall Road, Lahore 54000, Pakistan
| | - M Ahmed
- Training and Research Demonstration Farm, University of Veterinary and Animal Sciences, Outfall Road, Lahore 54000, Pakistan
| | - R M Shahbakht
- Department of Livestock Production, University of Veterinary and Animal Sciences, Outfall Road, Lahore 54000, Pakistan
| | - M N Haque
- Department of Animal Nutrition, University of Veterinary and Animal Sciences, Outfall Road, Lahore 54000, Pakistan.
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Mahjoubi E, Amanlou H, Zahmatkesh D, Ghelich Khan M, Aghaziarati N. Use of beet pulp as a replacement for barley grain to manage body condition score in over-conditioned late lactation cows. Anim Feed Sci Technol 2009. [DOI: 10.1016/j.anifeedsci.2009.06.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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