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Sales JNDS, Pugliesi G, Carvalho LR, Simões LMS, Lemos LA, Vicente MP, Silva RRR, Baruselli PS. Evolution over the last 40 years of the assisted reproduction technologies in cattle - the Brazilian perspective I - timed artificial insemination. Anim Reprod 2024; 21:e20240034. [PMID: 39175991 PMCID: PMC11340793 DOI: 10.1590/1984-3143-ar2024-0034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 06/14/2024] [Indexed: 08/24/2024] Open
Abstract
The reproductive efficiency of the herd is correlated with higher productivity in livestock. Reproduction biotechniques, such as ovulation synchronization protocols, are important to optimize production and accelerate genetic profit in beef and dairy herds. The objective of this review is to describe the evolution over the last 40 years of the artificial insemination (AI) and the timed-AI (TAI) protocols in cattle from a Brazilian perspective. TAI protocols are based on synchronizing emergence of the wave of follicular growth, controlling circulating progesterone (P4) concentrations, stimulating the final growth of the follicle and inducing a synchronized ovulation. Hormonal alternatives that optimize the response at the end of the protocol and strategies to induce final follicle growth and ovulation in categories of females with low expression of estrus are described. Furthermore, the potential positive effect of previous exposure to injectable P4 on fertility of Bos indicus and Bos taurus cows is also discussed.
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Affiliation(s)
- José Nélio de Sousa Sales
- Departamento de Medicina Veterinária, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brasil
- Faculdade de Zootecnia e Medicina Veterinária, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - Guilherme Pugliesi
- Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Pirassununga, SP, Brasil
| | - Laís Reis Carvalho
- Faculdade de Zootecnia e Medicina Veterinária, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - Luiz Manoel Sousa Simões
- Faculdade de Zootecnia e Medicina Veterinária, Universidade Federal de Lavras, Lavras, MG, Brasil
| | - Lucas Araujo Lemos
- Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Pirassununga, SP, Brasil
| | - Matheus Pedroso Vicente
- Faculdade de Zootecnia e Medicina Veterinária, Universidade Federal de Lavras, Lavras, MG, Brasil
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Chen F, Lu J, Guo R, Mei C, Guo B, Li W, Tsigkou A, Shi Z. Rectifying cow infertility under heat stress by immunization against inhibin and supplementation of progesterone. Domest Anim Endocrinol 2022; 80:106726. [PMID: 35413656 DOI: 10.1016/j.domaniend.2022.106726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 03/03/2022] [Accepted: 03/04/2022] [Indexed: 11/25/2022]
Abstract
This study was undertaken for the development of novel techniques that are based on immunoneutralization of inhibin bioactivity to improve Holstein cow fertility. A series of 4 experiments were carried out on 2 farms that were located in subtropical or temperate regions, to test the effects of immunization against inhibin alpha subunit on cow fertility under varying degrees of heat stress conditions. Though immunization against inhibin alone improved conception rate (CR) after TAI moderately in cows under mild heat stress conditions, the treatment plus progesterone supplementation substantially enhanced CR in the range of 25 to 35 percentages from severe heat stress to comfortable weather conditions. There existed an additive effect between immunization against inhibin and progesterone supplementation that maximally enhanced CR. Further, immunization against inhibin increased both FSH and activin A concentrations in blood during both follicular and luteal phases. It also significantly increased blood concentrations of E2 in the follicular phase but decreased P4 concentrations during the early pregnancy. However, interferon-tau concentrations in blood around the time of pregnancy recognition were doubled in the inhibin immunized cows. In conclusion, immunization against inhibin plus P4 treatment enhances ovarian follicle and the subsequent early embryo developments that help to greatly improve the fertility of Holstein dairy cows.
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Affiliation(s)
- F Chen
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - J Lu
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450002, China; Nanjing Eason Science & Technology Co.,Ltd., Nanjing, Jiangsu Province, 215316, China
| | - R Guo
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - C Mei
- Dongying Austasia Modern Dairy Farm Co., Ltd., Dongying 257345, China
| | - B Guo
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - W Li
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450002, China
| | - A Tsigkou
- Department of Biology, Duke Kunshan University, Kunshan, Kunshan, 215316, China
| | - Z Shi
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
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Sales JNDS, Simões LMS, Orlandi RE, Lima EA, Santos APC, Bottino MP, da Silva LACL, de Souza JC, Dias MM, Massoneto JPM, Scandiuzzi LA, Freitas BG, Guerreiro BM, Bastos MR. Pre-TAI protocol strategies to increase reproductive efficiency in beef and dairy cows. Anim Reprod 2019; 16:402-410. [PMID: 32435284 PMCID: PMC7234102 DOI: 10.21451/1984-3143-ar2019-0041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Ovulation synchronization protocols are well established in beef and dairy cows. However, the protocol response rate is around 70-90%. In beef cows, factors such as inadequate nutrition and calf presence negatively impact the response of progesterone (P4)/estradiol-based ovulation synchronization protocols by interfering with GnRH release and consequently reducing LH pulsatility and final follicular development. In dairy cows, protocols based on GnRH and prostaglandin (Ovsynch) are the most widely used in the world. However, the efficiency of Ovsynch is dependent on the presence of a large follicle at the time of administration of the first GnRH. In these ovulation synchronization protocols, pre-synchronization protocols (Prostaglandins, Double Ovsynch and P4synch) are usually attempted in an effort to increase responses. Thus, the objective of this review was to discuss pre-ovulation synchronization strategies (administration of injectable P4 or energetic/protein supplementation or pre-synchronization with intra-vaginal progesterone devices) aiming to increase the LH pulsatility in beef cows or induce the formation of a GnRH-responsive follicle at the beginning of the Ovsynch protocol in dairy cows.
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Meziane R, Niar A, Boughris F, Meziane T, Mamache B, Smadi MA. Induction of cyclicity in dairy cows using GnRH (Gonadotropin releasing hormone) in the region of Batna, Algeria. BIOL RHYTHM RES 2018. [DOI: 10.1080/09291016.2018.1528687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Rahla Meziane
- Department of Veterinary Sciences, Laboratory Environment, Health and Animal Production (ESPA), University of Batna1, Batna, Algeria
| | - Abdelatif Niar
- Laboratory of Animal Farm Reproduction, National Institute of Veterinary Sciences, Ibn Khaldoun University of Tiaret, Tiaret, Algeria
| | | | - Toufik Meziane
- Department of Veterinary Sciences, Laboratory Environment, Health and Animal Production (ESPA), University of Batna1, Batna, Algeria
| | - Bakir Mamache
- Department of Veterinary Sciences, Laboratory Environment, Health and Animal Production (ESPA), University of Batna1, Batna, Algeria
| | - Mustapha Adnane Smadi
- Department of Veterinary Sciences, Laboratory Environment, Health and Animal Production (ESPA), University of Batna1, Batna, Algeria
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