Performance, metabolic and hormonal responses on the peripartum of grazing beef cows supplemented during the pre-partum
Preprint
- 1 December 2019
- preprint
- Published by Springer Nature in Research square
Abstract
Background: Strategies for feeding supplements during the pre-partum are usually adopted because nutritional status upon calving is the main factor to affect reproductive performance. Metabolic parameters that relate nutritional status to physiological processes can be used to better understand the effects of supplementation. This study evaluated the effects of 60-day pre-partum energy-protein supplementation on performance, metabolic and hormonal responses during the peripartum of grazing beef cows. Thirty-eight pregnant multiparous Nellore cows were assigned to a completely randomized design with two treatments: control with no supplement and supplementation on the last 60 gestation days (1.5 kg/d). Results: The supplemented cows had higher ADG during the pre-partum (P0.10). Supplementation did not affect (P>0.10) BCS and calves’ BW upon calving on days 45 and 90, milk yield and composition (P>0.10). No differences (P>0.10) were found for forage intake and neutral detergent fiber digestibility. The intake and digestibility of CP and OM increased (P0.10) between supplementation and peripartum days for BUN, βHB, T3 and T4. Concentration of others blood parameters significantly changed (P0.10). Conclusions: Providing energy-protein supplement for grazing Nellore cows on the last 60 d of gestation improve energy balance during pre-partum, however, no carryover effects are seen for pre-partum supplementation on post-partum physiological responses. Keywords: nutrition, metabolism, parturition, ZebuKeywords
All Related Versions
- Published version: BMC Veterinary Research, 16 (1), 1.
This publication has 29 references indexed in Scilit:
- Impacts of cow body condition score during gestation on weaning performance of the offspringLivestock Science, 2016
- Managing the reproductive performance of beef cowsTheriogenology, 2016
- An evaluation of the performance and efficiency of nitrogen utilization in cattle fed tropical grass pastures with supplementationLivestock Science, 2014
- The use of hormonal treatments to improve reproductive performance of anestrous beef cattle in tropical climatesAnimal Reproduction Science, 2004
- Metabolic, Enzymatic and Endocrine Status in High‐Yielding Dairy Cows – Part 2Journal of Veterinary Medicine Series A, 2001
- Digestive and metabolic adaptations of ruminants to undernutrition, and consequences on reproductionReproduction Nutrition Development, 1998
- Lipid metabolism in the lactating mammary glandBiochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1997
- Clinical KetosisVeterinary Clinics of North America: Food Animal Practice, 1988
- Proteins of Human Follicular Fluid: The Blood-Follicle BarrierFertility and Sterility, 1973
- Estimation of the Concentration of Low-Density Lipoprotein Cholesterol in Plasma, Without Use of the Preparative UltracentrifugeClinical Chemistry, 1972