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1. In vivo embryo production in bovine donors with low and high antral follicle counts superovulated with low and high FSH doses

Author:
J.P.M. Lollato; A.C.C. Souza; R.C.P. Silva; M.O. Marques; A.S. Crozara; R.L. Gonçalves; L.S. Cunha; M.M. Seneda; F. Morotti
Source:
Livestock science 2022 v.262 pp. 104985
ISSN:
1871-1413
Subject:
zebu,   etc   ; embryo transfer; models; ovarian follicles; ovulation; reproductive performance; superovulation;     Show all 7 Subjects
Abstract:
... This study evaluated the embryo yield in Bos indicus donors with low and high antral follicle counts (AFCs) subjected to a multiple ovulation and embryo transfer (MOET) program using low and high FSH doses for superovulation. Donors (n = 16) underwent a presynchronization E2/P4-based protocol 30 days (D-30) before starting the MOET program. After AFC evaluation (D-26), donors with low (n = 8; ≤ 15 ...
DOI:
10.1016/j.livsci.2022.104985

2. Dynamics of changes in the breed composition of pastoral and agro-pastoral cattle herds in Benin: implications for the sustainable use of indigenous breeds

Author:
S.O. Houessou; S.F.U. Vanvanhossou; R.V.C. Diogo; L.H. Dossa
Source:
Heliyon 2022 v.8 no.4 pp. e09229
ISSN:
2405-8440
Subject:
zebu,   etc   ; data collection; genetic variation; herds; meat production; milk; pastoralism; questionnaires; taurine; Benin;     Show all 10 Subjects
Abstract:
... Data for concretely analyzing current trends regarding breed composition of cattle herds at the national scale and the logic behind it are lacking in Benin. This study aimed to investigate the factors affecting the dynamics of breed composition in traditional Beninese cattle herds. In this regard, the main reasons for acquiring new breeds by herders and management strategies for animal genetic div ...
DOI:
10.1016/j.heliyon.2022.e09229

3. Bos taurus haplotypes segregating in Nellore (Bos indicus) cattle

Author:
Y. T. Utsunomiya; A. A. A. D. Fortunato; M. Milanesi; B. B. Trigo; N. F. Alves; T. S. Sonstegard; J. F. Garcia
Source:
Animal genetics 2022 v.53 no.1 pp. 58-67
ISSN:
0268-9146
Subject:
zebu,   etc   ; Nellore; animal genetics; backcrossing; beef; body size; haplotypes; immunity; maternal lineage; taurine; Brazil; India;     Show all 12 Subjects
Abstract:
... Brazil is the largest exporter of beef in the world, and most of that beef derives from Nellore cattle. Although considered a zebu breed (Bos indicus), the history of Nellore cattle in Brazil is marked by the importation of bulls from India, the use of a Creole taurine (Bos taurus) maternal lineage to quickly expand the herds and backcrossing to Nellore bulls to recover zebu ancestry. As a consequ ...
DOI:
10.1111/age.13164

4. Effects of eCG and FSH in timed artificial insemination treatment regimens on estrous expression and pregnancy rates in primiparous and multiparous Bos indicus cows

Author:
M.P. Bottino; L.M.S. Simões; L.A.C.L. Silva; R.W. Girotto; L.A. Scandiuzzi; J.P.M. Massoneto; P.S. Baruselli; J.C. Souza; J.N.S. Sales
Source:
Animal reproduction science 2021 v.228 pp. 106751
ISSN:
0378-4320
Subject:
zebu,   etc   ; artificial insemination; progesterone;     Show all 3 Subjects
Abstract:
... Effects were evaluated in Bos indicus cows of eCG and FSH on follicular growth, estrous expression, and pregnancy per artificial insemination (P/AI) as a result of fixed-time artificial insemination (TAI). In Experiment 1, extent of timing-of-ovulation synchronization among cows was evaluated after imposing an estrogen/progesterone-based treatment regimen. At progesterone device removal (D8), cows ...
DOI:
10.1016/j.anireprosci.2021.106751

5. Demographic expansion and high level of matrilineal diversity in two populations of East African Baggara cattle

Author:
Sumaya Kambal; Amina E. Abdelrahim; Olivier Hanotte; Ryo Nakao; Abeer M. Alkhaibari; Bashir Salim
Source:
Journal of animal breeding and genetics 2022 v.139 no.2 pp. 161-169
ISSN:
0931-2668
Subject:
zebu,   etc   ; Bayesian theory; demography; effective population size; genetic polymorphism; genetic variation; haplotypes; meat production; population growth; Sudan;     Show all 10 Subjects
Abstract:
... Western Baggara cattle breed (WBCB) is an East African zebu inhabiting Sudan, well‐known as beef‐producing cattle. We investigated herein two phenotypically and geographically distinct populations of this breed, namely Nyalawi and Daeinawi, which are renowned for their unique meat production capabilities and adaptation attributes, with the aim to contribute to our understanding of their maternal g ...
DOI:
10.1111/jbg.12648

6. The effect of subclinical endometritis on reproductive performance in postpartum Bos indicus multiparous beef cows

Author:
R.V. Oliveira Filho; R.F. Cooke; G.A. de Mello; V.M. Pereira; J.L.M. Vasconcelos; K.G. Pohler
Source:
Animal reproduction science 2022 v.237 pp. 106928
ISSN:
0378-4320
Subject:
zebu,   etc   ; Nellore; beef; cell biology; embryonic mortality; endometritis; endometrium; estrus; estrus synchronization; insemination; pregnancy diagnosis; reproductive performance;     Show all 12 Subjects
Abstract:
... The objective was to investigate the prevalence of subclinical endometritis (SE) in postpartum Bos indicus multiparous beef cows using different polymorphonuclear cells (PMN) threshold ratios, and to evaluate the impacts of SE on their reproductive performance. A total of 689 postpartum Nellore cows (45.2 ± 7.8 days postpartum) were submitted to an estrus synchronization protocol + timed-artificia ...
DOI:
10.1016/j.anireprosci.2022.106928

7. Genomic diversity and breed composition of Vietnamese smallholder dairy cows

Author:
Nguyen N. Bang; Ben J. Hayes; Russell E. Lyons; Imtiaz A. S. Randhawa; John B. Gaughan; David M. McNeill
Source:
Journal of animal breeding and genetics 2022 v.139 no.2 pp. 145-160
ISSN:
0931-2668
Subject:
zebu,   etc   ; Brahman; Brown Swiss; Holstein; Jersey; Sahiwal; composite breeds; data collection; genetic background; genetic variation; genomics; taurine; Vietnam;     Show all 13 Subjects
Abstract:
... Vietnamese smallholder dairy cows (VDC) are the result of crossbreeding between different zebu (ZEB) and taurine dairy breeds through many undefined generations. Thus, the predominant breed composition of VDC is currently unknown. This study aimed to evaluate the level of genetic diversity and breed composition of VDC. The SNP data of 344 animals from 32 farms located across four dairy regions of ...
DOI:
10.1111/jbg.12651

8. Expression of bta-miR-222 and LHCGR in bovine cultured granulosa cells: Impact of follicle deviation and regulation by FSH/insulin in vitro

Author:
P.H. Santos; S.G. Nunes; F.F. Franchi; A.B. Giroto; P.K. Fontes; V.G. Pinheiro; A.C.S. Castilho
Source:
Theriogenology 2022 v.182 pp. 71-77
ISSN:
0093-691X
Subject:
zebu,   etc   ; Nellore; humans; insulin; ovulation; slaughterhouses;     Show all 6 Subjects
Abstract:
... Final antral follicle development and future ovulation are mediated by gonadotropin-induced changes with spatio-temporally regulated expression of genes. Here, we aimed to quantify the relative mRNA abundance of bta-miR-222 and its predicted target, LHCGR, in granulosa cells (GCs) from follicles, after follicle deviation, as well as from GCs cultured in vitro with follicle stimulating hormone (FSH ...
DOI:
10.1016/j.theriogenology.2022.01.034

9. Impacts of body condition score at beginning of fixed-timed AI protocol and subsequent energy balance on ovarian structures, estrus expression, pregnancy rate and embryo size of Bos indicus beef cows

Author:
Marcelo Vedovatto; Renan Barbosa Lecciolli; Eduardo de Assis Lima; Raizza Fátima Abadia Tulux Rocha; Rafaela Nunes Coelho; Philipe Moriel; Luana Gomes da Silva; Luiz Carlos Louzada Ferreira; Aldair Félix da Silva; Willian Vaniel Alves dos Reis; Dalton Mendes de Oliveira; Gumercindo Loriano Franco
Source:
Livestock science 2022 v.256 pp. 104823
ISSN:
1871-1413
Subject:
zebu,   etc   ; Nellore; artificial insemination; beef; body condition; body weight; corpus luteum; energy balance; estrus; ovarian follicles; pregnancy rate; progesterone;     Show all 12 Subjects
Abstract:
... These two studies evaluated the effects of body condition score (BCS) at beginning of fixed-timed artificial insemination (FTAI) protocol and subsequent BCS change on ovarian structures, estrus expression, pregnancy rate and embryo size of multiparous Nellore beef cows. In Experiment 1, 240 cows, distributed over four years (n = 40, 20, 82 and 98 cows, for years 1, 2, 3 and 4, respectively) were a ...
DOI:
10.1016/j.livsci.2022.104823

10. Effect of biostimulation on growth rate and reproductive development of Bos indicus dairy heifers

Author:
Sanjay Choudhary; M.L. Kamboj; Dharma Sahu; Sunil Dutt; Ankit Magotra; Pawan Singh; Nishant Kumar; Rodolfo Ungerfeld; C Kotresh Prasad
Source:
Tropical animal health and production 2022 v.54 no.2 pp. 138
ISSN:
0049-4747
Subject:
zebu,   etc   ; Sahiwal; animal health; average daily gain; birth weight; bulls; direct contact; early development; growth performance; leptin; progesterone; puberty; somatotropin;     Show all 13 Subjects
Abstract:
... The present study aimed to compare the growth rate, feeding behavior, reproductive development, and concentrations of GH and leptin in Sahiwal heifers exposed to direct bull contact, bull contact through a fenceline, or isolated from bulls. Overall, 24 heifers were allotted to three treatment groups (n = eight/group) based on birth weight, body weight, and age. Heifers from the non-exposed group ( ...
DOI:
10.1007/s11250-022-03129-3

11. Metagenomic analysis of bacterial communities during estrous cycle in Bos indicus

Author:
Purva Gohil; Kajal Patel; Kishan Purohit; Dhruvil Chavda; Apurva Puvar; Vishal S. Suthar; Deepak B. Patil; Madhavi Joshi; Chaitanya G. Joshi
Source:
Tropical animal health and production 2022 v.54 no.2 pp. 118
ISSN:
0049-4747
Subject:
zebu,   etc   ; Alcaligenes; Bacillaceae; Cyanobacteria; Enterobacteriaceae; Lactobacillus; Massilia; Micrococcus; Stenotrophomonas; animal health; diestrus; estrus; metagenomics; metestrus; microorganisms; proestrus; progesterone; statistical analysis;     Show all 18 Subjects
Abstract:
... The present study, using 16 s rRNA sequencing of the V3-V4 hypervariable region, was aimed to check diversity of vaginal microbiota throughout different stages of the estrous cycle in Bos indicus, with attention to changes in progesterone hormone and microorganism diversity. Metagenomic research was conducted on vaginal swabs obtained from nine healthy Indian Gir cows at estrus (day 0), metestrus ...
DOI:
10.1007/s11250-022-03119-5

12. Probability of pregnancy in beef cows with early-weaned calves

Author:
Rangel Fernandes Pacheco; Ricardo Zambarda Vaz; João Restle; Magali Floriano da Silveira; Liliane Cerdotes; Jullia Sehorek Teixeira; Lucas Milani; Paulo Santana Pacheco
Source:
Livestock science 2022 v.257 pp. 104854
ISSN:
1871-1413
Subject:
zebu,   etc   ; beef; birth rate; body condition; body weight; equations; herds; heterozygosity; milk production; odds ratio; pregnancy; regression analysis; reproductive performance;     Show all 13 Subjects
Abstract:
... The aim of this study was to evaluate over two reproductive years the factors that influence the probability of pregnancy in 185 multiparous beef cows with early-weaned calves. The effect of the following parameters were evaluated: the year; the individual and maternal heterozygosity; the percentage of Zebu in the genotype; the weight at calving, weaning and at the end of the breeding season; the ...
DOI:
10.1016/j.livsci.2022.104854

13. Sperm function and oxidative status: Effect on fertility in Bos taurus and Bos indicus bulls when semen is used for fixed-time artificial insemination

Author:
Roberta Ferreira Leite; João Diego de Agostini Losano; Giulia Kiyomi Vechiato Kawai; Bruno Rogério Rui; Ken Kawaoka Nagai; Vivian Cardoso Castiglioni; Adriano Felipe Perez Siqueira; Mayra Elena Ortiz D'Avila Assumpção; Pietro Sampaio Baruselli; Marcilio Nichi
Source:
Animal reproduction science 2022 v.237 pp. 106922
ISSN:
0378-4320
Subject:
zebu,   etc   ; Angus; DNA; Nellore; animal reproduction; artificial insemination; cryopreservation; membrane potential; mitochondria; mitochondrial membrane; oxidative stress; semen quality; sperm quality;     Show all 13 Subjects
Abstract:
... Semen quality is one of the criteria used for the selection of bulls with relatively greater fertility. In addition, bull fertility depends on the integrity and function of all sperm structures. The aim of this study, therefore, was to determine associations when there was conducting of conventional and functional techniques for the evaluation of sperm samples from bulls with known fertility histo ...
DOI:
10.1016/j.anireprosci.2022.106922

14. Whole-genome comparative analysis reveals genetic mechanisms of disease resistance and heat tolerance of tropical Bos indicus cattle breeds

Author:
Periyasamy Vijayakumar; Arunasalam Singaravadivelan; Anamika Mishra; Krishnan Jagadeesan; Sanniyasi Bakyaraj; Ramalingam Suresh; Thiagarajan Sivakumar
Source:
Genome 2022 v.64 no.4 pp. 241-254
ISSN:
1480-3321
Subject:
zebu,   etc   ; Sahiwal; disease resistance; feed intake; genes; heat shock response; heat tolerance; innate immunity; metabolism; osmotic stress; oxidative stress; India;     Show all 12 Subjects
Abstract:
... Bos indicus cattle breeds have been naturally selected for thousands of years for disease resistance and thermo-tolerance. However, the genetic mechanisms underlying these specific inherited characteristics must be elucidated. Hence, in this study, a whole-genome comparative analysis of the Bos indicus cattle breeds Kangayam, Tharparkar, Sahiwal, Red Sindhi, and Hariana of the Indian subcontinent ...
DOI:
10.1139/gen-2021-0030

15. Drop-off rhythms and survival of Hyalomma anatolicum (Acari: Ixodidae) fed on crossbred (Friesians x Zebu) calves in Sudan

Author:
Rua K.I. Khogali; Shawgi M. Hassan
Source:
Heliyon 2021 v.7 no.9 pp. e07930
ISSN:
2405-8440
Subject:
zebu,   etc   ; Hyalomma anatolicum; crossbreds; males; theileriosis; ticks; Sudan;     Show all 7 Subjects
Abstract:
... Hyalomma anatolicum is one of the most economically important ticks in the Sudan. It is the main vector of tropical theileriosis in cattle and other diseases in different species. The study aims to investigate the drop-off rhythms and survival periods of tick stages fed on crossbred calves. Larvae, nymphs and adults fed on crossbred calves (male, 3–6 months old, Friesians x Zebu) kept under zero g ...
DOI:
10.1016/j.heliyon.2021.e07930

16. Predictive potential of activity and reticulo-rumen temperature variation for calving in Gyr heifers (Bos taurus indicus)

Author:
Rogério Ribeiro Vicentini; Priscila Arrigucci Bernardes; Aska Ujita; André Penido Oliveira; Maria Lúcia Pereira Lima; Lenira El Faro; Aline Cristina Sant’Anna
Source:
Journal of thermal biology 2021 v.95 pp. 102793
ISSN:
0306-4565
Subject:
zebu,   etc   ; air; circadian rhythm; humidity; prediction; temperature; Brazil;     Show all 7 Subjects
Abstract:
... Factors related to the thermal physiology and activity of Zebu animals close to calving are still unknown. The aims of this study were 1) to describe the pattern of reticulo-rumen temperature and activity variation in nulliparous Gyr heifers close to calving, and 2) to evaluate the predictive potential of these traits for calving in Gyr heifers. Forty pregnant Gyr heifers that had calved between A ...
DOI:
10.1016/j.jtherbio.2020.102793

17. Exogenous progesterone‐dependent modulation in the follicular dynamics of Bos indicus cattle undergoing repeated ovum pick‐up sessions

Author:
Mudussar Nawaz; Muhammad Saleem; Farid Ullah; Ghulam Shabbir Khan; Imran Zahoor; Nasim Ahmad; Amjad Riaz
Source:
Reproduction in domestic animals 2022 v.57 no.1 pp. 55-63
ISSN:
0936-6768
Subject:
zebu,   etc   ; Sahiwal; blastocyst; blood serum; oocytes; progesterone; ultrasonography;     Show all 7 Subjects
Abstract:
... The objective of the present study was to evaluate the role of serum progesterone (P4) in follicular dynamics, oocytes’ recovery and quality and their in vitro developmental competence during consecutive ovum pick‐up (OPU) sessions in Bos indicus dairy cows. Wave‐synchronized Sahiwal cattle (n = 20) were randomly divided into treatment (n = 10) and control (n = 10) groups. CIDR was used as a sourc ...
DOI:
10.1111/rda.14028

18. The functional traits and threats to the Borgou cattle breed as perceived by farmers in Benin

Author:
Hilaire S. S. Worogo; Célestin C. Hessa; Alassan S. Assani; Rachidi Idrissou; Cham D. A. Alabi; Yaya Idrissou; Josias S. Adjassin; Maximilien Azalou; Brice G. C. Assogba; Ibrahim T. Alkoiret
Source:
Pastoralism 2022 v.12 no.1 pp. 16
ISSN:
2041-7136
Subject:
zebu,   etc   ; crossing; meat; milk; milk production; pastoralism; Benin;     Show all 7 Subjects
Abstract:
... Benin has been facing the loss of its animal genetic heritage over the years. The aim of this study was to explore the reasons related to the progressive abandonment of the Borgou cattle breed. The assessment of threat level and functional traits related to the Borgou breed was therefore collected through semi-structured interviews from 105 cattle farmers using the Likert scale (1 to 5), and the s ...
DOI:
10.1186/s13570-022-00232-w

19. Economic analysis of smallholder dairy cattle enterprises in Senegal

Author:
Evaristo Mukunda Malenje; Ayao Missohou; Stanly Fon Tebug; Emelie Zonabend König; Joseph Owino Jung’a; Rawlynce Cheruiyot Bett; Karen Marshall
Source:
Tropical animal health and production 2022 v.54 no.4 pp. 221
ISSN:
0049-4747
Subject:
zebu,   etc   ; animal health; business enterprises; cows; dairy cattle; economic performance; feeds; herds; income; milk; milk production; nutrition; profitability; standard deviation; Senegal;     Show all 15 Subjects
Abstract:
... Smallholder dairy production in Senegal is important to both livelihoods and food and nutrition security. Here, we examine the economic performance of smallholder dairy cattle enterprises in Senegal, using data from longitudinal monitoring of 113 households. The mean (and standard deviation) of the net returns (NR) per cow per annum (pcpa) was 21.7 (202.9) USD, whilst the NR per household herd per ...
DOI:
10.1007/s11250-022-03201-y

20. Progesterone release profile and follicular development in Nelore cows receiving intravaginal progesterone devices

Author:
Lucas Oliveira e Silva; Alessio Valenza; Rodrigo Lemos Olivieri Rodrigues Alves; Mayara Silvestri; Mariana Costa Contini; Jéssica Cristina Lemos Motta; Jéssica Nora Drum; Alexandre Hênryli de Souza; Roberto Sartori
Source:
Theriogenology 2022 v.178 pp. 77-84
ISSN:
0093-691X
Subject:
zebu,   etc   ; Nellore; animal reproduction; beef cattle; blood; cloprostenol; ears; estradiol; experimental design; follicular development; norgestomet; ovarian follicles; progesterone; surface area; ultrasonics;     Show all 15 Subjects
Abstract:
... This study aimed to evaluate the progesterone (P4) release profile provided by four commercially available intravaginal P4 devices, as well as the effect of circulating P4 concentrations exclusively from these devices on the development of the dominant follicle (DF) in Nelore (Bos indicus) cows. Therefore, non-lactating multiparous Nelore cows were enrolled in an experimental design, over three re ...
DOI:
10.1016/j.theriogenology.2021.11.005