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Herbster CJL, Abreu MLC, Brito Neto AS, Mendes MS, da Silva LP, Marcondes MI, Mazza PHS, Cabral LS, Bezerra LR, Oliveira RL, Pereira ES. Macromineral requirements for maintenance and growth in male and female hair sheep. Front Vet Sci 2023; 10:1032429. [PMID: 36937008 PMCID: PMC10017769 DOI: 10.3389/fvets.2023.1032429] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 01/23/2023] [Indexed: 03/06/2023] Open
Abstract
A better understanding of the nutritional requirements of sheep, especially in terms of minerals, is crucial for improving production. We estimated the net requirements for Ca, P, K, Mg, and Na for gain (NCag, NPg, NKg, NMgg, and NNag) and maintenance (NCam, NPm, NKm, NMgm, and NNam) in male and female hair sheep. Six datasets with 248 individual records of hair sheep (139 non-castrated males, 75 castrated males and 34 females) were used to estimate the net macromineral requirements for gain. To estimate the net macromineral requirements for maintenance, 52 observations (26 non-castrated and 26 castrated males) were used. A meta-analytical approach was applied, using non-linear mixed effects models and the study as a random effect. Based on information criteria for model selection, heterogeneous variance functions were more likely to describe mineral requirements with a low level of model selection uncertainty. The adopted criteria allowed the choice of the best models to represent the macromineral requirements. The chosen models explained the observed variability in the sex, and the choices were based on a low level of uncertainty (w ≥ 0.90). Irrespective of sex, NCag and NPg decreased with increasing BW from 10 to 30 kg and average daily gain (ADG) of 150 g/day, ranging from 1.71-1.38; 1.83-1.57; 1.82-1.51 of Ca and 0.86-0.66; 0.92-0.78; 0.92-0.75 of P for non-castrated males, castrated males, and females, respectively. The NKg remained constant, with mean values of 0.26 g/day. The NNag range was 0.17 to 0.14 g/day for non-castrated males, 0.20 to 0.25 g/day for females, and constant (0.18 g/day) for castrated males with an increase in BW from 10 to 30 kg and an ADG of 150 g/day. Macromineral requirements for maintenance (mg/kg BW) and retention (%) were 23.70 and 54.30 for Ca, 25.33 and 79.80 for P, 11.74 and 5.00 for K, 2.63 and 8.50 for Mg, and 7.01 and 8.10 for Na for males. The International Committees did not provide inferences about the sex influence on mineral requirements. Our study indicates that sex is one factor that influences the macromineral requirements for gain. The information generated in this study can be used to optimize the mineral management of hair sheep in the growing phase in tropical regions.
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Affiliation(s)
- Caio J. L. Herbster
- Department of Animal Science, Federal University of Ceara, Fortaleza, Brazil
| | - Matheus L. C. Abreu
- Department of Animal Science, Federal University of Mato Grosso, Cuiaba, Brazil
| | | | - Marcilio S. Mendes
- Department of Animal Science, Federal University of Ceara, Fortaleza, Brazil
| | - Luciano P. da Silva
- Department of Animal Science, Federal University of Ceara, Fortaleza, Brazil
| | - Marcos I. Marcondes
- Department of Animal Science, Washington State University, Pullman, WA, United States
| | - Pedro H. S. Mazza
- Department of Veterinary Medicine and Animal Science, Federal University of Bahia, Salvador, Brazil
| | - Luciano S. Cabral
- Department of Animal Science, Federal University of Mato Grosso, Cuiaba, Brazil
| | - Leilson R. Bezerra
- Center of Health and Agricultural Technology, Federal University of Campina Grande, Patos, Brazil
| | - Ronaldo L. Oliveira
- Department of Veterinary Medicine and Animal Science, Federal University of Bahia, Salvador, Brazil
| | - Elzania S. Pereira
- Department of Animal Science, Federal University of Ceara, Fortaleza, Brazil
- *Correspondence: Elzania S. Pereira
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Ferreira BJM, Mendes CQ, de Souza Rodrigues RT, de Carvalho DTQ, Gois GC, Matos JC, Menezes DR, Ramos EJN, de Carvalho FAL, Queiroz MAÁ. Macromineral requirements for gain of Dorper lambs with differences in residual feed intake and raised in Brazilian semiarid. Small Rumin Res 2021. [DOI: 10.1016/j.smallrumres.2021.106414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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