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Delmilho G, Bohland E, Stephanie N, Vaz CCPDE, Alvarez LRDE, Costa RLDDA. Evaluation of the supply of Duddingtonia flagrans for the control of gastrointestinal parasites in sheep. AN ACAD BRAS CIENC 2024; 96:e20220940. [PMID: 38451593 DOI: 10.1590/00013765202420220940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 07/09/2023] [Indexed: 03/08/2024] Open
Abstract
Parasitic resistance imposes alternative control methods, like nematophagous fungi. In this study, two experiments were conducted supplying Duddingtonia flagrans aiming to evaluate the biological control of parasites in sheep. In the first, 24 sheep naturally infected by gastrointestinal nematodes were allocated, in randomized blocks, following the treatments: control or treated group, 0.5g/animal product containing D. flagrans, chlamydospores. Weight, body score, Famacha©, egg count per gram of feces (EPG), and larval percentage were evaluated. In the second experiment, D. flagrans (0.25 and 0.5g product) was infested with manure, plus or not protein concentrate, in a completely randomized design. In both experiments the dose was intentionally lower than recommended. Recovery and larval identification were performed. The SAS analyzed the variables by the MIXED procedure, repeated measures in time. Weight, body score, hematocrit, and Famacha© did not show differences between treatments (p>0.05); however, EPG (p<0.001) and the percentage of larvae identified in coproculture were different. In the second experiment, the inclusion of the fungus did not influence the recovery of larvae (p>0.05). In both experiments, colonization and advancement of the fungus were visualized. Under the experimental conditions, the fungus D. flagrans was not effective in the biological control of parasitic infection in sheep.
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Affiliation(s)
- Gustavo Delmilho
- Centro de Pesquisa Animal Diversificada, Instituto de Zootecnia\Secretaria de Agricultura e Abastecimento - APTA, Rua Heitor Penteado, 56, 13380-011 Nova Odessa, SP, Brazil
| | - Elisabeth Bohland
- Universidade de Santo Amaro, Faculdade de Medicina Veterinaria, Rua Prof. Enéas de Siqueira Neto, 340, Jardim das Imbuias, 04829-300 São Paulo, SP, Brazil
| | - Nicole Stephanie
- Universidade de Santo Amaro, Faculdade de Medicina Veterinaria, Rua Prof. Enéas de Siqueira Neto, 340, Jardim das Imbuias, 04829-300 São Paulo, SP, Brazil
| | - Claudia C P DE Vaz
- Centro de Pesquisa Animal Diversificada, Instituto de Zootecnia\Secretaria de Agricultura e Abastecimento - APTA, Rua Heitor Penteado, 56, 13380-011 Nova Odessa, SP, Brazil
| | - Leyla R DE Alvarez
- Department of Animal and Dairy Sciences, Assistant Professor Extension & Research, Mississippi State University, Mississippi State, MS, 39762, USA
| | - Ricardo L D DA Costa
- Centro de Pesquisa Animal Diversificada, Instituto de Zootecnia\Secretaria de Agricultura e Abastecimento - APTA, Rua Heitor Penteado, 56, 13380-011 Nova Odessa, SP, Brazil
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Marconato MNS, Sanches TP, Chaves CMS, Bueno MS, Issakowicz J, Haguiwara MMH, Paz CCPDE, Reis LLD, Abdalla AL, Costa RLDDA. Growth performance, carcass traits and meat quality of lambs fed increasing level of Macadamia nut cake. AN ACAD BRAS CIENC 2021; 93:e20190852. [PMID: 33978059 DOI: 10.1590/0001-3765202120190852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 11/13/2019] [Indexed: 11/21/2022] Open
Abstract
A total of 40 lambs were divided into four different treatments according to the inclusion level of the macadamia nut cake: C-control (0%), M1 (6.5%), M2 (12%) and M3 (20%). Feed was provided twice a day; animal weighing along with body condition scoring occurred within a 14-day interval. The lambs were slaughtered at the end of the performance test. Analysis of variance was performed through the Mixed procedure of the SAS, as well as linear and quadratic regression analysis. The groups presented differences between the treatments (P <0.05) for dry matter intake (DMI), ethereal extract intake (EEI), consumption in relation to live weight percentage and feed conversion ratio (FCR). The lowest mean DMI was obtained by the animals that received the M2 and differed from the C treatment, whose average was the highest. The EEI was highest for the M3 group and the FCR was also better for this group. There was a linear effect for EEI and FCR, and quadratic for crude protein intake. There was no effect for carcass characteristics, and only initial pH had a decreasing linear effect. The macadamia nut cake was effective in promoting the performance of the animals, since there was an improvement in feed conversion.
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Affiliation(s)
- Michael N S Marconato
- Centro de Pesquisa em Zootecnia Diversificada, Instituto de Zootecnia (IZ), Rua Heitor Penteado, 56, 13380-011 Nova Odessa, SP, Brazil
| | - Tamires P Sanches
- Centro de Pesquisa em Zootecnia Diversificada, Instituto de Zootecnia (IZ), Rua Heitor Penteado, 56, 13380-011 Nova Odessa, SP, Brazil
| | - Camila M S Chaves
- Laboratório de Nutrição Animal (LANA), Centro de Energia Nuclear na Agricultura (CENA), Universidade de São Paulo (USP), Av. Centenário, 303, 13416-000 Piracicaba, SP, Brazil
| | - Mauro S Bueno
- Centro de Pesquisa em Zootecnia Diversificada, Instituto de Zootecnia (IZ), Rua Heitor Penteado, 56, 13380-011 Nova Odessa, SP, Brazil
| | - Juliano Issakowicz
- Centro Estadual de Educação Profissional Olegário Macedo (CEEP Olegário Macedo), Av. Marly Rolim, s/n, Vila Rio Branco, 84172-340 Castro, PR, Brazil
| | - Marcia M H Haguiwara
- Centro de Tecnologia de Carne, Instituto de Tecnologia de Alimentos (ITAL), Av. Brasil, 2880, 13070-178 Campinas, SP, Brazil
| | - Cláudia Cristina P DE Paz
- Centro de Bovinos de Corte, Instituto de Zootecnia (IZ), Rodovia Carlos Tonanni, km 94, 14160-900 Sertãozinho, SP, Brazil
| | - Letícia L Dos Reis
- Centro de Pesquisa em Zootecnia Diversificada, Instituto de Zootecnia (IZ), Rua Heitor Penteado, 56, 13380-011 Nova Odessa, SP, Brazil
| | - Adibe Luis Abdalla
- Laboratório de Nutrição Animal (LANA), Centro de Energia Nuclear na Agricultura (CENA), Universidade de São Paulo (USP), Av. Centenário, 303, 13416-000 Piracicaba, SP, Brazil
| | - Ricardo L D DA Costa
- Centro de Pesquisa em Zootecnia Diversificada, Instituto de Zootecnia (IZ), Rua Heitor Penteado, 56, 13380-011 Nova Odessa, SP, Brazil
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