Update of Reproductive Strategies in Cattle

A special issue of Animals (ISSN 2076-2615). This special issue belongs to the section "Animal Reproduction".

Deadline for manuscript submissions: closed (15 December 2021) | Viewed by 5916

Special Issue Editors


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Guest Editor
Departament of Animal Pathology, Faculty of Veterinary Medicine of Lugo, 27002 Lugo, Spain
Interests: reproduction in dairy cattle; nutritional additives for dairy cattle to improve reproductive efficiency; fertility evaluation of bull semen

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Guest Editor
Animal Selection and Reproduction Centre—SERIDA, Principado de Asturias, 33394 Gijón, Spain
Interests: semen analysis; biomarkers; animal reproduction; andrology; diagnostic markers; male fertility; ejacu-late analysis; fertility assessment
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Animal Selection and Reproduction, The Regional Agri-Food Research and Development Service of Asturias (SERIDA), ES-33394 Gijón, Spain
Interests: semen quality; biomarkers; diagnostic markers; male fertility; ejaculate analysis; semen parameters; spermatozoa
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

One of the main objectives of dairy and meat farms is to achieve reproductive efficiency, which results in an economic benefit for the farms. Reproductive efficiency is achieved through good management and nutrition in the transition period. This results in less postpartum pathology, which, with the help of a good heat detection and synchronization program, will lead to a good fertility rate at first insemination. Improved reproductive rates help guarantee the birth of one calf per year in beef cattle and regular milk production throughout the year. The aim of this Special Issue is to help veterinarians involved in beef cattle reproduction, veterinary students, and university researchers and professors by providing scientific articles and updated bibliographical reviews which they will be able to apply in their daily work.

Areas of interest: nutritional strategies to improve reproductive efficiency, microminerals and their interaction in fertility, analysis of reproductive/economic data in dairy and beef cattle, postpartum disorders and consequences relating to reproductive performance, update of synchronization protocols for dairy and beef cattle, automatic oestrus detection monitors, fertility biomarkers of sire semen, detection of subfertile bulls, and fertility treatments in cattle. 

Dr. Rodrigo Muiño Otero
Dr. Carlos Olegario Hidalgo Ordoñez
Dr. Carolina Tamargo de Miguel
Guest Editors

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Keywords

  • reproduction
  • fertility
  • dairy
  • beef
  • synchronization program
  • oestrus detection
  • benefit

Published Papers (2 papers)

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Research

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9 pages, 258 KiB  
Article
Effects of Premating Calcium and Phosphorus Supplementation on Reproduction Efficiency of Grazing Yak Heifers
by Jia Zhou, Jianxun Zhang, Benchu Xue, Shuangming Yue, Chao Yang and Bai Xue
Animals 2021, 11(2), 554; https://doi.org/10.3390/ani11020554 - 20 Feb 2021
Cited by 3 | Viewed by 1761
Abstract
Reproductive efficiency is the main factor limiting yak production on the Tibet Plateau. The purpose of this study was to investigate the effect of supplementation with calcium chloride (CaCl) and monocalcium phosphate (MCP) for 30 days before breeding on body weight (BW) change, [...] Read more.
Reproductive efficiency is the main factor limiting yak production on the Tibet Plateau. The purpose of this study was to investigate the effect of supplementation with calcium chloride (CaCl) and monocalcium phosphate (MCP) for 30 days before breeding on body weight (BW) change, serum bone metabolism biomarkers, conception rate, and calving rate of grazing yaks. Ninety 3 year old yak heifers (153.05 ± 6.56 kg BW) were assigned to three treatments (n = 30 per treatment): grazing without supplementation (CONT), grazing plus calcium chloride supplementation (CaCl), and grazing plus monocalcium phosphate supplementation (MCP). Compared with the CONT group, supplementation with CaCl increased the serum concentrations of osteocalcin and decreased the alkaline phosphatase (ALP) levels (p < 0.05); supplementation with MCP increased the average daily gain (ADG), serum concentrations of phosphorus (P) and osteocalcin, conception rate, and calving rate (p < 0.05), whereas it decreased the serum concentrations of hydroxyproline, ALP, and calcitonin (p < 0.05). Both CaCl and MCP supplementation had no effect on serum calcium (Ca) concentration. The ADG, conception rate, and calving rate were higher in the MCP group than in the CaCl group (p < 0.05), while the serum concentrations of hydroxyproline and calcitonin were lower (p < 0.05). It could be concluded that premating supplementation with MCP increased the body weight gain and subsequent conception and calving rate of grazing yaks. Supplementation with MCP had a positive effect on body condition and bone metabolism, thus providing a better estrous condition for grazing yak heifers, which could contribute to enhancing reproduction efficiency. Full article
(This article belongs to the Special Issue Update of Reproductive Strategies in Cattle)

Review

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11 pages, 435 KiB  
Review
Effects of Temperament on the Reproduction of Beef Cattle
by Alice Poggi Brandão and Reinaldo Fernandes Cooke
Animals 2021, 11(11), 3325; https://doi.org/10.3390/ani11113325 - 21 Nov 2021
Cited by 12 | Viewed by 3285
Abstract
Temperament is often defined as the behavioral expression of animals in response to human interaction. Cattle temperament can be evaluated using an association of chute score and exit velocity, with cattle then classified as adequate or excitable temperament. To assess the impacts of [...] Read more.
Temperament is often defined as the behavioral expression of animals in response to human interaction. Cattle temperament can be evaluated using an association of chute score and exit velocity, with cattle then classified as adequate or excitable temperament. To assess the impacts of temperament on various beef systems, these evaluation criteria were associated with productive and reproductive parameters of Bos taurus and B. indicus-influenced cattle. Consistently across studies, excitable cattle had greater plasma cortisol compared to animals with adequate temperament. Studies also reported that excitable beef females have poorer reproductive performance compared to calmer cohorts, including reduced annual pregnancy rates, decreased calving rate, weaning rate, and kg of calf weaned/cow exposed to breeding. Acclimating B. indicus × B. taurus or B. taurus heifers to human handling improved behavioral expression of temperament and hastened puberty attainment. However, similar benefits were not observed when mature cows were acclimated to human handling. Collectively, temperament of beef females measured via behavioral responses upon human handling impacts their reproductive and productive responses independent of breed type, and should be considered for optimal beef cattle production. Full article
(This article belongs to the Special Issue Update of Reproductive Strategies in Cattle)
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