Effects of different maternal nutrition approaches on weight gain and on adipose and muscle tissue development of young bulls in the rearing phase.

Autor: Polizel GHG; Department of Animal Science, GOPec, College of Animal Science and Food Engineering - USP, Av. Duque de Caxias Norte, 225, Pirassununga, SP, 13635-900, Brazil. guilhermepolizel875@gmail.com., de Francisco Strefezzi R; Department of Veterinary Medicine, College of Animal Science and Food Engineering - USP, Av. Duque de Caxias Norte, 225, Pirassununga, SP, 13635-900, Brazil., Cracco RC; Department of Animal Science, GOPec, College of Animal Science and Food Engineering - USP, Av. Duque de Caxias Norte, 225, Pirassununga, SP, 13635-900, Brazil., Fernandes AC; Department of Animal Science, GOPec, College of Animal Science and Food Engineering - USP, Av. Duque de Caxias Norte, 225, Pirassununga, SP, 13635-900, Brazil., Zuca CB; Department of Animal Science, GOPec, College of Animal Science and Food Engineering - USP, Av. Duque de Caxias Norte, 225, Pirassununga, SP, 13635-900, Brazil., Castellar HH; Department of Animal Science, GOPec, College of Animal Science and Food Engineering - USP, Av. Duque de Caxias Norte, 225, Pirassununga, SP, 13635-900, Brazil., Baldin GC; Department of Animal Science, GOPec, College of Animal Science and Food Engineering - USP, Av. Duque de Caxias Norte, 225, Pirassununga, SP, 13635-900, Brazil., de Almeida Santana MH; Department of Animal Science, GOPec, College of Animal Science and Food Engineering - USP, Av. Duque de Caxias Norte, 225, Pirassununga, SP, 13635-900, Brazil.
Jazyk: angličtina
Zdroj: Tropical animal health and production [Trop Anim Health Prod] 2021 Nov 09; Vol. 53 (6), pp. 536. Date of Electronic Publication: 2021 Nov 09.
DOI: 10.1007/s11250-021-02982-y
Abstrakt: This study evaluated the effects of prenatal nutrition on body weight (BW), average daily gain (ADG), rump fat thickness (RFT), backfat thickness (BFT), ribeye area (REA), muscle cell area (MCA), and the number of cells in REA (NCREA) of young Nellore bulls during the rearing period. After pregnancy confirmation (30 days of pregnancy), 126 Nellore cows were separated into three prenatal nutritional treatments (NP (control; 0.03% of BW), only mineral supplementation; PP (0.3% of BW), protein-energy supplementation in the final third; and FP (0.3% of BW) protein-energy supplementation during the entire pregnancy). After calving, all animals were submitted to the same environmental conditions (sanitary and nutritional) and the different supplementation protocols ceased. The males (63 bulls) were evaluated during the entire rearing phase (210 ± 28 days to 540 ± 28 days of age) to weight gain (BW and ADG), carcass characteristics (RFT, BFT, and REA), and for histological assessments (MCA and NCREA; 7 animals per treatment randomly selected). All phenotypes were subjected to an analysis of variance. The different prenatal stimuli had no effect on BFT, RFT, MCA, and NCREA (P > 0.05); however, prenatal nutrition influenced BW of the animals during the rearing phase (P < 0.01) and showed a tendency on ADG (P = 0.09) and REA (P = 0.08). In conclusion, the offspring from FP treatment showed greater BW during the rearing phase in comparison to the NP group. This is related to a greater protein offered in prenatal nutrition, increasing muscle development during the gestational period.
(© 2021. The Author(s), under exclusive licence to Springer Nature B.V.)
Databáze: MEDLINE
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