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1. Effect of number of 6-mm predeviation follicles and intraovarian patterns on right-side ovulation in heifers

Author:
Ginther, O.J.; Dangudubiyyam, S.V.
Source:
Animal reproduction science 2019
ISSN:
0378-4320
Subject:
heifers,   etc   ; ovarian follicles; ovulation;     Show all 3 Subjects
Abstract:
... The mechanisms underlying the greater frequency of ovulation from right ovary (RO) than left ovary (LO) were studied in 145 Bos taurus heifers. Diameter deviation during a follicular wave is indicated by continued diameter increase in the future preovulatory follicle (PF) and a decrease in diameter of future subordinate follicles. The PF (ovulation) was in the RO (63/105, 60%) more frequently (P < ...
DOI:
10.1016/j.anireprosci.2019.01.011

2. Role of intraovarian mechanisms and side of ovary on characteristics of follicle selection in Bos taurus heifers

Author:
Ginther, O.J.; Dangudubiyyam, S.V.
Source:
Theriogenology 2019 v.135 pp. 56-64
ISSN:
0093-691X
Subject:
heifers,   etc   ; animal morphology; ovarian follicles;     Show all 3 Subjects
Abstract:
... Intraovarian effects on diameter of future dominant follicle (DF or F1) and future largest subordinate follicle (F2) during the few days before selection of the future DF and subordinate follicles were studied in 147 bovine interovulatory intervals. Follicle selection involves diameter deviation or the beginning of separation of growth rates between F1 and F2. Diameter deviation is classified as c ...
DOI:
10.1016/j.theriogenology.2019.05.027

3. Variations in follicle-diameter deviation and a growth spurt in the dominant follicle at deviation in Bos taurus heifers

Author:
Ginther, O.J.
Source:
Animal reproduction science 2018 v.188 pp. 155-164
ISSN:
0378-4320
Subject:
heifers,   etc   ; morphogenesis; ovarian follicles;     Show all 3 Subjects
Abstract:
... Follicle diameter deviation during a follicular wave in cattle is preceded by a common-growth phase and begins with continued growth rate of the future dominant follicle (DF or F1) and reduced growth rate of the future largest subordinate follicle (SF or F2). Follicle diameters were analyzed daily for wave 1 (n=100) and wave 2 (n=91). The beginning of expected deviation was designated day 0 and wa ...
DOI:
10.1016/j.anireprosci.2017.11.020

4. Factors affecting side of ovulation in heifers and mares—A comparative study

Author:
Ginther, O.J.; Dangudubiyyam, S.V.
Source:
Animal reproduction science 2018 v.199 pp. 72-78
ISSN:
0378-4320
Subject:
heifers,   etc   ; corpus luteum; mares; ovulation;     Show all 4 Subjects
Abstract:
... Effect of side (left ovary, LO; right ovary, RO) and intraovarian presence of the regressing corpus luteum (CL) on the preovulatory follicle (PF) and ovulation were studied using ultrasonic- records of complete interovulatory intervals (IOI) for 500 IOI in heifers and 485 IOI in mares. Only IOI with a recording of side of a single PF and a single CL at each end of the IOI were used. In heifers, ov ...
DOI:
10.1016/j.anireprosci.2018.10.008

5. Follicle blood flow and FSH concentration associated with variations in characteristics of follicle selection in heifers

Author:
Ginther, O.J.; Dangudubiyyam, S.V.; Domingues, R.R.
Source:
Theriogenology 2019 v.125 pp. 93-101
ISSN:
0093-691X
Subject:
heifers,   etc   ; Holstein; blood flow; follicle-stimulating hormone; ovarian follicles;     Show all 5 Subjects
Abstract:
... Selection of the dominant follicle during a follicular wave is manifested by diameter deviation. At deviation (day 0), growth rate continues for the future dominant follicle (F1) and begins to decrease for the largest subordinate follicle (F2). The percentage of color-Doppler blood-flow signals in the wall of F1 and F2 and the temporality between FSH concentration and F1 and F2 diameter were deter ...
DOI:
10.1016/j.theriogenology.2018.10.019

6. Hormonal mechanisms regulating follicular wave dynamics I: Comparison of follicle growth profiles under different physiological conditions in heifers

Author:
Gomez-León, V.E.; Ginther, O.J.; Araujo, E.R.; Guimarães, J.D.; Wiltbank, M.C.
Source:
Theriogenology 2019 v.123 pp. 194-201
ISSN:
0093-691X
Subject:
dairy heifers,   etc   ; Holstein; follicle-stimulating hormone; luteinizing hormone; ovulation;     Show all 5 Subjects
Abstract:
... Follicle diameter deviation has been identified as the pivotal morphological manifestation of follicle selection, however, many of the hormonal mechanisms leading to this key event and regulating variation between individual follicular waves remain undefined. This study compared circulating FSH, LH, and P4 with the follicular dynamics during three different physiological conditions. We hypothesize ...
DOI:
10.1016/j.theriogenology.2018.09.006

7. Evaluation of different captive bolt lengths and breed influence upon post-stun hind limb and forelimb activity in fed cattle at a commercial slaughter facility

Author:
Martin, Miriam S.; Kline, Helen C.; Wagner, Dana R.; Alexander, Lacey R.; Edwards-Callaway, Lily N.; Grandin, Temple
Source:
Meat science 2018 v.143 pp. 159-164
ISSN:
0309-1740
Subject:
heifers,   etc   ; Holstein; hindlimbs; slaughterhouses; steers; video recording;     Show all 6 Subjects
Abstract:
... The objective of this study was to assess the effects of captive bolt length and breed type on post-stun leg activity in cattle. A total of 2850 Holstein (HOL) and non-Holstein British/Continental bred (NHOL) steers and heifers were observed post-stunning at a large commercial slaughter facility. A pneumatically powered penetrating captive bolt stunner was used with three different bolt lengths: C ...
DOI:
10.1016/j.meatsci.2018.05.003

8. Gonadotropin concentrations associated with variations in diameter deviation during follicle selection in Holstein heifers

Author:
Ginther, O.J.; Domingues, R.R.; Dangudubiyyam, S.V.; Araujo, E.R.
Source:
Animal reproduction science 2018 v.192 pp. 271-279
ISSN:
0378-4320
Subject:
heifers,   etc   ; Holstein; follicle-stimulating hormone; ovarian follicles;     Show all 4 Subjects
Abstract:
... Diameter deviation or selection of the future dominant follicle (F1) from the future largest subordinate follicle (F2) during a follicular wave occurs when F1 is 8.5 mm (expected deviation, day 0). Deviation has been classified as conventional (F2 ≥ 7.0 mm), F2-undersized (F2 < 7.0 mm), and F1,F2-switched (F2 larger than F1 on day −1 or 0). Concentrations of gonadotropins were compared within and ...
DOI:
10.1016/j.anireprosci.2018.03.023

9. Concentrations of a PGF2α metabolite during pregnancy on the days that luteolysis occurs in nonbred heifers

Author:
Pinaffi, F.L.V.; Araujo, E.R.; Ginther, O.J.
Source:
Domestic animal endocrinology 2018 v.62 pp. 76-82
ISSN:
0739-7240
Subject:
heifers,   etc   ; blood sampling; luteolysis; metabolites; pregnancy; progesterone;     Show all 6 Subjects
Abstract:
... Concentrations of a metabolite of PGF2α (PGFM) were compared between nonbred (n = 6) and pregnant (n = 8) heifers on days 16, 17, and 18 postovulation. On each day, an 8-h session of hourly blood sampling was done. Averaged over the 8-h sessions, mean concentration of PGFM was less (P < 0.0009) in the pregnant group (45.2 ± 3.2 pg/mL) than that in the nonbred group (65.6 ± 7.9 pg/mL), but the mini ...
DOI:
10.1016/j.domaniend.2017.10.002

10. Effects of the presence of grazing‐experienced heifers on the development of foraging behavior at the feeding station scale for first‐grazing season calves

Author:
Shingu, Yuko; Ueda, Koichiro; Tada, Shingo; Mitani, Tomohiro; Kondo, Seiji
Source:
Animal science journal = 2017 v.88 no.8 pp. 1120-1127
ISSN:
1344-3941
Subject:
heifers,   etc   ; calves; foraging; grazing; pastures;     Show all 5 Subjects
Abstract:
... In this study, effects of grazing‐experienced heifer presence on foraging behavior development at the feeding station (FS) scale for first‐grazing season calves were determined. A group of four calves grazing alone (C), and another comprising four calves (Wc) and three grazing‐experienced heifers (Wh), were alternately stocked every day for 2 h on the same pasture for 26 days. The foraging time bu ...
DOI:
10.1111/asj.12735

11. Effects of use of conventional and sexed semen on the conception rate in heifers: A comparison study

Author:
Oikawa, Kohei; Yamazaki, Takeshi; Yamaguchi, Satoshi; Abe, Hayato; Bai, Hanako; Takahashi, Masashi; Kawahara, Manabu
Source:
Theriogenology 2019 v.135 pp. 33-37
ISSN:
0093-691X
Subject:
heifers,   etc   ; Holstein; artificial insemination; conception rate; dairy industry; insemination; regression analysis; risk factors; semen; sires; Japan;     Show all 11 Subjects
Abstract:
... Conception rate with the use of sexed semen is lower than that with the use of conventional semen, posing a major problem in the dairy industry. The aim of this study was to understand the risk factors that affect the conception rate after artificial insemination (AI) with conventional and sexed semen using field data. The records of the first insemination in Holstein heifers with conventional (n  ...
DOI:
10.1016/j.theriogenology.2019.06.012

12. Effect of captive bolt gun length on brain trauma and post-stunning hind limb activity in finished cattle Bos taurus

Author:
Kline, Helen C.; Wagner, Dana R.; Edwards-Callaway, Lily N.; Alexander, Lacey R.; Grandin, Temple
Source:
Meat science 2019 v.155 pp. 69-73
ISSN:
0309-1740
Subject:
heifers,   etc   ; Holstein; atmospheric pressure; bolts; brain damage; brain stem; hindlimbs; occupational health and safety; steers;     Show all 9 Subjects
Abstract:
... Hind limb post stunning kicking in properly stunned unconscious cattle is a safety hazard for employees. Three different captive bolt lengths of 15.2 cm (STRD), 16.5 cm (MED), and 17.8 cm (LON) were evaluated for amount of tissue damage and hind limb kicking in a Jarvis USSS-1 pneumatic stunner. The air pressure setting was 1378.95 to 1447.90 pKa for all captive bolts. All 45 test cattle were rend ...
DOI:
10.1016/j.meatsci.2019.05.004

13. The comparison between random forest and boosted trees for dystocia detection in dairy cows

Author:
Zaborski, Daniel; Proskura, Witold S.; Grzesiak, Wilhelm; Różańska-Zawieja, Jolanta; Sobek, Zbigniew
Source:
Computers and electronics in agriculture 2019 v.163 pp. 104856
ISSN:
0168-1699
Subject:
dairy heifers,   etc   ; Holstein; calving; dairy cows; data collection; dystocia; gestation period; models; prediction;     Show all 9 Subjects
Abstract:
... The aim of the present study was to compare the predictive performance of random forest (RF) and boosted trees (BT) used for dystocia detection in dairy heifers and cows. In order to get a better insight into the predictive abilities of these two models, several datasets with a varying proportion of easy and difficult calvings were utilized. Moreover, the most important predictors of calving diffi ...
DOI:
10.1016/j.compag.2019.104856

14. A novel approach to study the bovine oviductal fluid proteome using transvaginal endoscopy

Author:
Papp, Sophie M.; Fröhlich, Thomas; Radefeld, Karina; Havlicek, Vitezslav; Kösters, Miwako; Yu, Hans; Mayrhofer, Corina; Brem, Gottfried; Arnold, Georg J.; Besenfelder, Urban
Source:
Theriogenology 2019 v.132 pp. 53-61
ISSN:
0093-691X
Subject:
heifers,   etc   ; embryogenesis; endoscopy; estrous cycle; experimental design; magnetism; oviducts; proteins; proteome;     Show all 9 Subjects
Abstract:
... The oviduct provides the optimal micro milieu for early embryo development. However, accessing the bovine oviductal fluid in vivo for analysis is still challenging and therefore the oviductal fluid is usually collected post mortem.In the study presented here we introduce a novel approach to gain minimal invasive access to the bovine oviductal fluid proteome in vivo by transvaginal endoscopy at dif ...
DOI:
10.1016/j.theriogenology.2019.04.009

15. New Approach Studying Interactions Regarding Trade-Off between Beef Performances and Meat Qualities

Author:
Conanec, Alexandre; Picard, Brigitte; Durand, Denis; Cantalapiedra-Hijar, Gonzalo; Chavent, Marie; Denoyelle, Christophe; Gruffat, Dominique; Normand, Jérôme; Saracco, Jérôme; Ellies-Oury, Marie-Pierre
Source:
Foods 2019 v.8 no.6
ISSN:
2304-8158
Subject:
heifers,   etc   ; beef; beef industry; beef quality; data collection; experts; models; sensory properties;     Show all 8 Subjects
Abstract:
... The beef cattle industry is facing multiple problems, from the unequal distribution of added value to the poor matching of its product with fast-changing demand. Therefore, the aim of this study was to examine the interactions between the main variables, evaluating the nutritional and organoleptic properties of meat and cattle performances, including carcass properties, to assess a new method of m ...
DOI:
10.3390/foods8060197

16. Bovine pregnancy associated glycoproteins can alter selected transcripts in bovine endometrial explants

Author:
Wallace, Rhianna M.; Hart, Mariah L.; Egen, Tina E.; Schmelzle, Amanda; Smith, Michael F.; Pohler, Ky G.; Green, Jonathan A.
Source:
Theriogenology 2019 v.131 pp. 123-132
ISSN:
0093-691X
Subject:
heifers,   etc   ; chemokine CXCL5; endometrium; explants; genes; glycoproteins; insemination; messenger RNA; pregnancy; prostaglandins; quantitative polymerase chain reaction;     Show all 11 Subjects
Abstract:
... This study was designed to examine changes in target transcript abundance in endometrial explants exposed to pregnancy-associated glycoproteins (PAGs). Endometrial explants from pregnant and non-pregnant heifers collected on day18 (day 0: day of insemination) were incubated in the absence or presence of PAGs (15 μg/ml). The PAGs represented a mixture comprised of approximately equal amounts of bov ...
DOI:
10.1016/j.theriogenology.2019.03.026

17. Influence of denaverine hydrochloride on calving ease in Holstein-Friesian heifers

Author:
Lange, K.; Heuwieser, W.; Fischer-Tenhagen, C.
Source:
Journal of dairy science 2019 v.102 no.6 pp. 5410-5418
ISSN:
0022-0302
Subject:
heifers,   etc   ; Holstein; blood serum; calves; calving; calving ease; cortisol; cows; drugs; dystocia; pain;     Show all 11 Subjects
Abstract:
... Calving is assumed to be an exhausting and painful event. A drug that eases the calving procedure and alleviates pain would help cows, especially those suffering from dystocia. In a randomized, controlled, and blinded trial, we measured the effect of denaverine hydrochloride on physical and physiological calving parameters. Eighty-three Holstein-Friesian heifers were included in the analysis. Pull ...
DOI:
10.3168/jds.2018-14930

18. Influence of maternal protein restriction in primiparous heifers during mid- and/or late-gestation on meat quality and fatty acid profile of progeny

Author:
Webb, M.J.; Block, J.J.; Funston, R.N.; Underwood, K.R.; Legako, J.F.; Harty, A.A.; Salverson, R.R.; Olson, K.C.; Blair, A.D.
Source:
Meat science 2019 v.152 pp. 31-37
ISSN:
0309-1740
Subject:
heifers,   etc   ; carcass composition; dietary protein; fatty acid composition; meat composition; meat quality; pregnancy; progeny; steaks; tissues;     Show all 10 Subjects
Abstract:
... The objective of this study was to evaluate the influence of metabolizable protein (MP) restriction in mid- and/or late-gestation on meat quality characteristics of progeny. Heifers were assigned to 2 levels of dietary protein (control [CON], 102% of MP requirements; or restricted [RES], 80% of MP requirements) at 2 stages of gestation (mid-gestation [MID] and late-gestation [LATE]) in a Balaam's ...
DOI:
10.1016/j.meatsci.2019.02.006

19. Effect of the Rearing Managements Applied during Heifers’ Whole Life on Quality Traits of Five Muscles of the Beef Rib

Author:
Soulat, Julien; Monteils, Valérie; Picard, Brigitte
Source:
Foods 2019 v.8 no.5
ISSN:
2304-8158
Subject:
heifers,   etc   ; beef; cattle husbandry; color; diet; finishing; flavor; hay; longissimus muscle; meat cuts; pastures; rearing; ribs;     Show all 13 Subjects
Abstract:
... The aim of this work was to study the effects of four different rearing managements applied during the heifers’ whole life period (WLP) on muscles from ribs in the chuck sale section. The characteristics of meat studied were the sensory, rheological, and color of the longissimus muscle (LM) and the rheological traits of four other muscles: complexus, infraspinatus, rhomboideus, and serratus ...
DOI:
10.3390/foods8050157

20. Predicting feedlot cattle performance from intake of dry matter and NEg early in the feeding period

Author:
Silvestre, A.M.; Cruz, G.D.; Owens, F.N.; Pereira, M.C.S.; Hicks, R.B.; Millen, D.D.
Source:
Livestock science 2019 v.223 pp. 108-115
ISSN:
1871-1413
Subject:
heifers,   etc   ; average daily gain; body weight; databases; death; diet; energy; feedlots; finishing; prediction; steers;     Show all 11 Subjects
Abstract:
... The objectives of this study were: 1) To identify which specific week or weeks at the beginning of feeding period was most closely correlated with intake of net energy for gain (NEg) and dry matter (DM) for the full feedlot period of 140–180 d, and 2) to determine how various performance measurements were correlated with intake during this selected time frame. The database was compiled from one co ...
DOI:
10.1016/j.livsci.2019.03.007