The performance of primiparous and multiparous beef cows rearing single and simulated-twin calves

2000 ◽  
Vol 80 (4) ◽  
pp. 569-576 ◽  
Author(s):  
J. A. Small ◽  
E. Charmley ◽  
A.D. Kennedy
Keyword(s):  
Reproductive Performance ◽  
Production Efficiency ◽  
Post Partum ◽  
Beef Cows ◽  
Serum Progesterone ◽  
Creep Feed ◽  
Feasible Option ◽  
Negative Effect ◽  
Potential Benefits ◽  
The Impact

One hundred and eighteen Hereford-cross heifers (n = 70) and cows (n = 48) and their offspring were used to evaluate the impact of simulated twinning on weaned calf production and reproductive performance. Twin-calf rearing was simulated by the adoption of a second calf born within 24 h of the birth of the dam's natural calf. In each of 4 yr, cows calved in winter (January–February), were turned out in spring (late May) to rotationally graze grass-legume pastures until weaning in the fall (late September). From calving until turnout cows were given a forage-based diet consisting of either grass-legume silage or hay offered free choice, plus concentrate, the amount of which was 75 or 100% higher for dams in the simulated-twin (ST) than the single (S) treatment. All calves had access to the conserved forage and were given the concentrate ration as creep feed. Estrus detection was performed twice daily beginning 3 wk before and continuing for 4 wk into the breeding season, which consisted of AI for the first 25 d and bull service for the remaining 22 d. In years 2 and 3, the postpartum anestrous period was determined by serum progesterone concentrations. At weaning, S calves weighed more than natural or adopted calves in the ST treatment because weight gain was greater for S calves from birth to turnout. However calf production efficiency (total kilograms calf weaned per kilogram dam weight) was greater for primiparous and multiparous ST than S groups (primiparous 0.85 vs. 0.43 and multiparous 1.62 vs. 0.49; P < 0.05). The ST treatment had no negative effect (P > 0.05) on reproductive performance. As a research tool, this study suggests there are large potential benefits to beef cows raising two, as opposed to one calf. Simulated twinning poses severe management challenges and is not being proposed as a commercial option. However, advances in reproductive technology that could control twinning (e.g., transfer of an embryo a week following AI or twin-transfer of sexed embryos) mean that in future, twin rearing of beef calves may become a feasible option and this study provides valuable information on the post-natal management of cows rearing two calves. Key words: Simulated-twin, progesterone, post-partum, weaning, cow-calf, calves

Effects of post-partum energy intake and calf isolation on follicle dynamics and post-partum interval of beef cows

1996 ◽  
Vol 1996 ◽  
pp. 135-135
Author(s):  
D.R. Mackey ◽  
M.G. Diskin ◽  
J.M. Sreenan ◽  
J.F. Roche
Keyword(s):  
Energy Level ◽  
Energy Intake ◽  
Body Condition ◽  
Reproductive Performance ◽  
Production Efficiency ◽  
Post Partum ◽  
Beef Cows ◽  
Number Of Factors ◽  
Beef Suckler ◽  
Main Factor

Reproduction is the main factor limiting the production efficiency of beef suckler cows and the prolonged post-partum interval is a major factor contributing to this poor reproductive performance. This interval is determined by a number of factors of which nutrition and the suckling effects of a calf are the most important. The aims of this experiment were to determine the effects of energy level post-partum and suckling on the PPI of cows in a low to moderate body condition at calving

scholarly journals Assessment of ergot (Claviceps purpurea) exposure in pregnant and postpartum beef cows

2018 ◽  
Vol 98 (4) ◽  
pp. 688-700 ◽  
Author(s):  
T. Grusie ◽  
V. Cowan ◽  
J. Singh ◽  
J. McKinnon ◽  
B. Blakley
Keyword(s):  
Ergot Alkaloid ◽  
Post Partum ◽  
Ergot Alkaloids ◽  
Maximum Size ◽  
Beef Cows ◽  
Plasma Prolactin ◽  
Claviceps Purpurea ◽  
Ambient Temperatures ◽  
Beef Cow ◽  
The Impact

Cows were fed ration for 9 wk containing 5, 48, 201, and 822 μg kg−1 ergot alkaloids. The objective was to evaluate the impact of ergot consumption in beef cow–calf operations. Ergot alkaloids up to 822 μg kg−1 did not alter the weight of peripartum and postpartum beef cows (P = 0.93) or nursing calves (P = 0.08), rectal temperature (P = 0.16), or plasma prolactin concentrations (P = 0.30) at moderate ambient temperatures. Ergot did not influence the time (>1 ng mL−1; P = 0.79) or the progesterone concentration (P = 0.38) at the time of first postpartum rise or the size of the first (14 ± 0.6 mm; P = 0.40) and second (13 ± 0.5 mm; P = 0.41) follicles to ovulate. The maximum size of the first postpartum corpus luteum (CL) was 4 mm larger in the 822 μg kg−1 ergot group compared with the control (P = 0.03) for the first ovulation post partum, but not for the second (P = 0.11). There was no effect of ergot exposure on the number of days until the appearance of the first (43 ± 4 d; P = 0.95) or second (52 ± 4 d; P = 0.98) CL post partum. Ergot alkaloid concentrations up to 822 μg kg−1 did not affect pregnancy rates (X2 = 0.36). In conclusion, ergot alkaloid exposure for 9 wk to concentrations as high as 822 μg kg−1 did not alter performance in pregnant and postpartum beef cattle at moderate ambient temperatures.

Effect of different diet supplements in the pre- and post-partum period on reproductive performance in the dairy cow

2001 ◽  
Vol 26 (2) ◽  
pp. 313-321 ◽  
Author(s):  
N. H. Gardner ◽  
C. K. Reynolds ◽  
R.H. Phipps ◽  
A.K. Jones ◽  
D.E. Beever
Keyword(s):  
Sugar Beet ◽  
Dairy Cows ◽  
Reproductive Performance ◽  
Post Partum ◽  
Late Gestation ◽  
Diet Supplements ◽  
Group 2 ◽  
The Impact ◽  
Ration Group ◽  
Group 1

AbstractThe study compared the impact of feeding different energy supplements (barley, molassed sugar beet and fat) prior to calving and the effects of feeding supplemental fat post-partum, on subsequent production and reproductive efficiency of dairy cows. Forty-eight multiparous Holstein-Friesian dairy cows were assigned to one of two groups, six weeks prior to expected calving date and fed a grass based total mixed ration according to ME requirements for late gestation. Group 1 was supplemented with barley (B) or molassed sugar beet feed (SB) prior to calving and was then given a high starch lactation ration. Group 2 was supplemented with either fat (F) or no supplement (C) pre partum, and was then given a similar lactation ration as Group 1 but supplemented with fat. Lactation rations were fed through to week-20 post partum and the cows were monitored during this period. Milk yield (P<0.002) and milkfat (P<0.02) production were higher and milk protein concentration (P<0.001) was lower in Group 2. The number of days to first rise in progesterone following parturition was greater (P<0.01) in Group 2. Due to the design of the study, effects of prepartum supplementation were only evaluated within each lactation ration group. Conception rate to first service was higher (P<0.001) for B than SB supplemented cows in Group 1 and higher (P<0.02) for F than C supplemented cows in Group 2. Services per conception were lower (P=0.06) for B than SB supplemented cows in Group 1 and lower (P<0.05) for F than C supplemented cows in Group 2. Overall pregnancy rates and days open were not significantly different between the groups. The data shows that pre-partum nutrition had an important role in determining subsequent fertility. Despite having negative effects early post partum, supplementing with fat did not affect overall reproductive performance but it did improve milk production.

Moving music for moving source texts

2018 ◽  
Vol 1 (2) ◽  
pp. 319-340 ◽  
Author(s):  
Beatriz Naranjo Sánchez
Keyword(s):  
Literary Texts ◽  
Emotional Engagement ◽  
Translation Quality ◽  
Creative Behaviour ◽  
Negative Effect ◽  
Potential Benefits ◽  
The Impact ◽  
Sad Music ◽  
Positive Effect

Abstract Based on previous findings about the role of music as an emotional stimulus, as well as the potential benefits of music-driven emotional engagement in written production and creative behaviour, the present study investigates the impact of emotional background music on translation quality and creativity. A translation experiment in two different conditions (music vs. silence) was conducted in a controlled environment. Participants translated two literary texts of opposing emotional contents (happy vs. sad) while they listened to an emotionally-matching soundtrack. Statistical analysis of within- and between-group comparisons only revealed conclusive results for the sad condition, showing a positive effect of sad music on translation creativity and a negative effect on accuracy.

scholarly journals Kinerja Reproduksi Induk Sapi Potong pada Usaha Peternakan Rakyat di Kecamatan Mojogedang

2017 ◽  
Vol 14 (1) ◽  
pp. 73
Author(s):  
Joko Riyanto ◽  
Lutojo Lutojo ◽  
D. M. Barcelona
Keyword(s):  
Reproductive Performance ◽  
Post Partum ◽  
Beef Cows ◽  
Calving Interval ◽  
Central Java ◽  
Days Open ◽  
Central Java Province

<p>This study aims to determine of the reproductive performance of beef cows consists are Simpo<br />cow, Limpo cow and PO cow reared on the livestock. The research was conducted by survey on beef<br />cattle 60 head in the District Mojogedang, Central Java Province from December 2014 through<br />February 2015. The research parameter is post partum estrus (PPE), post partum mating (PPM),<br />service per conception ( S / C), days open (DO). Results of the study were analyzed descriptively.<br />Reproductive performance of Simpo cow, Limpo cow and PO cow are consecutive PPE: 3:56 ± 0.73<br />months, 3.93 ± 0:40 months, and 6.75 ± 4.68 months, PPM: 3.85 ± 0.70 months, 3.79 ± 0:51 months,<br />and 4:42 ± 1.23 months, S / C: 1.45 ± 0:20 times, 1.74 ± 0:07 time, and 1:38 ± 0:38 times, DO: 5:33 ±<br />0:58 months, 8:44 ± 4.65 months, and 9:27 ± 5.93 months, CI: 14:33 ± 0:58 months, 14:44 ± 0.66<br />months, and 14:44 ± 0.66 months. The conclusion shows that the reproductive performance of the<br />Simpo cow, Limpo cow and PO cow in District Mojogedang appears that the value of post-partum<br />estrus (PPE) and post partum mating (PPM) is panjang.Service per conception (S / C) is high. Days<br />open (DO) and calving interval (CI) are both still long.</p>

The effects of lactation length and feed level on subsequent reproductive performance in the sow

1984 ◽  
Vol 1984 ◽  
pp. 28-28
Author(s):  
R. W. Henry ◽  
D. W. Pickard ◽  
P. E. Hughes
Keyword(s):  
Reproductive Performance ◽  
Post Partum ◽  
Experimental Period ◽  
List Type ◽  
Large White ◽  
Lactation Length ◽  
Creep Feed ◽  
Subsequent Birth ◽  
Term Response

Previous research suggests that the feeding stratagem employed during a particular stage of the reproductive cycle may evoke an immediate response and/or a more long-term response in reproductive performance. This trial was designed to investigate the effect of feed restriction during lactation on reproductive performance when lactation periods of 10 and 35 days were employed.Eighty, second to fifth parity Large White x Landrace sows were used in the experiment. The sows were allocated on a parity and liveweight basis to one of the following four lactation treatments:-1)35 day lactation; fed 7 kg/day of a standard proprietary diet during lactation2)35 day lactation; fed 3 kg/day during lactation3)10 day lactation; fed 7 kg/day during lactation4)or 10 day lactation; fed 3 kg/day during lactation.All sows were then fed 3 kg/day during the weaning to remating interval and 2.2 kg/day throughout gestation. Creep feed was offered ad libitum to the litters of sows on treatments 1 and 2 from 10 days post partum. Liveweight and backfat (maximum shoulder, P2 and minimum loin) measurements were taken at regular intervals throughout the experimental period. Piglet weaning weights and subsequent birth weights were recorded.

scholarly journals Systematic clinical examination of early postpartum cows and treatment of puerperal metritis did not have any beneficial effect on subsequent reproductive performance

2008 ◽  
Vol 53 (No. 2) ◽  
pp. 59-69 ◽  
Author(s):  
R. Dolezel ◽  
M. Vecera ◽  
T. Palenik ◽  
S. Cech ◽  
M. Vyskocil
Keyword(s):  
Beneficial Effect ◽  
Dairy Cows ◽  
Clinical Examination ◽  
Reproductive Performance ◽  
Pathological Condition ◽  
Post Partum ◽  
Control Program ◽  
Severe Form ◽  
Early Postpartum ◽  
The Impact

The objective of this field trial was to evaluate the impact of a control program based on systematic clinical examination on Day 10 ± 3<I> post partum (pp)</I> and treatment in the case of puerperal metritis on reproductive performance in dairy cows. Cows having serious dystocia as well as cows treated for retained placenta were not involved in the trial. The evaluation was performed by comparing reproductive performance between systematically examined cows (Group E, <I>n</I> = 83) and cows that were examined and treated occasionally on the basis of farmers’ notifications of a pathological condition (Group C, <I>n</I> = 95). In Group E, reproductive performance was compared between cows with a mild form of metritis (Group E1, <I>n</I> = 18), cows with a severe form of metritis (Group E2, <I>n</I> = 14) and cows without puerperal metritis (Group E0, <I>n</I> = 51). Clinical examination consisted in rectal and vaginal palpation with inspection of the lochia manually withdrawn from the vagina. Cows with puerperal metritis were treated with an intramuscular administration of PGF<sub>2&alpha;</sub> analogue – dinoprost. An intrauterine antibiotic (rifaximin foam) was added in cases of severe metritis. The examination and treatment (in cases of a pathological condition, <I>n</I> = 10) were repeated in Group E on Day 24 ± 3 <I>pp</I>. In addition, the incidence of puerperal metritis in the year seasons was evaluated. Occurrence of ovarian disorders (30.1 vs. 24.2%) and clinical endometritis (27.7 vs. 23.2%), calving to first service interval (83.2 vs. 85.4 days), pregnancy until Day 100 <I>pp</I> (30.8 vs. 35.3%) as well as until Day 150 <I>pp</I> (64.6 vs. 64.7%), services per conception (2.45 vs. 2.16), calving to conception interval (141.6 vs. 136.4 days), total culling rate (20.5 vs. 28.4%) and culling rate due to (sub)infertility (8.4 vs. 6.3) in Group E compared to Group C were not different. Only the first service pregnancy rate was lower in Group E (30.3 vs. 47.1%, <I>P</I> < 0.05). Even though no significant differences were found in the reproduction parameters between groups E1, E2 and E0, the worst parameters were in Group E2. The incidence of puerperal metritis in the year seasons was not different. The trial did not prove that there was a beneficial effect of systematic clinical examination on Day 10 ± 3 <I>pp</I> nor of treatment in cases of puerperal metritis, using PGF<sub>2&alpha;</sub> and intrauterine antibiotic, on reproductive performance in dairy cows.

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