The Effect of Supplementary Feeding on the Reproductive Performance of Beef Cows in Supporting the Siwab Program

This study aims to determine the effect of supplementary feeding on the reproductive performance of beef cattle and calf birth weight. Additional feed is given to cows who are pregnant (8-9 months) and after giving birth for 3 months. Additional feed provided is a complete feed prepared from local feed ingredients. The objectives of this supplementary feeding are: maintaining the condition of the mother's body, maintaining normal embryo growth, and accelerating postpartum estrus, as has been done in Megal Village, Pamotan District, Rembang Regency. Provision of additional feed to old pregnant beef cattle (8-9 months) and after giving birth for 3 months in Megal Village, Pamotan District, Rembang Regency. The conclusion of this study is that the provision of additional feed 5 kg / head / day to old pregnant beef cattle and after giving birth for 3 months can reduce the weight loss of beef cattle broods when the availability of feed is limited, increase birth weight of calves and accelerate postpartum estrus. estrus for the first time after childbirth). Provision of additional feed to late pregnant beef cattle and after giving birth is highly recommended, especially in areas where the availability of feed fluctuates.Key words: supplementary feed, reproduction, beef cattle

Morphometric Characteristics and Reproductive Performance of Pasundan Cattle in the North Prianganese and Southern South Coast Region

This study aims to determine the morphometric characteristics and reproductive performance of Pasundan cows which are extensively reared on smallholder farms in the coastal areas of the south (Garut, Cianjur, and Sukabumi) and North Priangan (Bogor, Purwakarta, and Sumedang). This research is descriptive research with a qualitative approach. Production characterization was carried out using a simple method, namely by measuring the body surface including shoulder height, chest circumference, body length, and bodyweight of Pasundan cattle. Meanwhile, the reproductive characteristics discuss puberty, service per conception (S / C), conception rate (CR), calving rate, postpartum estrus, postpartum mating, days open (DO), calving interval (CI), calving birth weight, and calving rate. calves weight growth. Data were collected by survey, the location was determined by purposive sampling in the area of the seed source with the largest population and the random sampling of livestock was determined purposively as many as 30 Pasundan cows from each region. Data were analyzed using quantitative descriptive analysis. The results showed that the morphometric characteristics of Pasundan cattle included mean shoulder height of 123.0 0 ± 3.06a cm VS 121.34 ± 2.82a in males and 110.34 ± 2.78 vs 108.00 ± 2.14a in females. Body length 115.74 ± 3.30 cm VS 115.34 ± 2.97acm in males and 112.67 ± 2.97cm VS 109.67 ± 1.82 cm in females. Chest circumference 145.67 ± 2.97cm VS 142.67 ± 2.67cm bulls and 136.00 ± 2.95cm VS 131.00 ± 2.92cm in females, Bodyweight 268.0 ± 17.00 kg VS 246.00 ± 7.00a for males and 215.0 ± 15.00 kg VS 194.00 ± 54.00kg in females. As for reproductive characteristics, it shows puberty of 20-24 months., S / C 1.4 - 1.6, Conception rate 65-70%, calving rate 62.5-65%, Postpartum Estrus 50-60 days, postpartum mating 72-104 days, day -open 94-126 days and a calving interval of 12-14 months. Calves' birth weight was 18.0 - 18.5 kg and daily body weight gain ranged from 0.48 to 0.50 kg. It was concluded that the morphometric characteristics and reproductive performance of Pasundan cattle in the Pesisir Selatan area were better than North Priangan.

Lunar Cycle Influences Reproductive Performance of Crossbred Brahman Cows Under Tropical Conditions

Evidence has accumulated over the years indicating that the moon influences some aspects of the reproductive activity in animals and humans. However, little is known about the influence of the lunar cycle on the reproductive performance of cows under tropical conditions, where the environment strongly affects reproduction. This retrospective study was conducted with the aim of assessing the influence of the lunar cycle on some reproductive traits of tropical crossbred cows managed in a pasture-based system. Data from 5869 reproductive records from two commercial farms localized in the Maracaibo Lake Basin of Zulia State, Venezuela, were analyzed. Variables studied were first service conception rate, calving frequency, first postpartum estrous frequency, and pregnancy frequency. In addition to the lunar cycle, the effects of farm, season, and predominant breed were also considered. Data were analyzed using logistic regression and general linear model from SAS. First service conception was affected by lunar phases and predominant breed, but not by farm or season. For frequencies of calving, first postpartum estrus, and pregnancy, there was no main effect of farm, season, and predominant breed, whereas the effect of lunar phases was highly significant. First service conception was significantly greater in waning than in crescent phase of the lunar cycle. Frequencies of calving, first estrus, and pregnancy were highly correlated and showed greater figures around full moon and new moon. In conclusion, lunar cycle influenced first service conception, attaining greater values in the waning phase of the moon cycle. Frequencies of calving, first postpartum estrus, and pregnancy in crossbred cows showed a clear bimodal rhythm, whose greatest values coincided with new moon and full moon.

Correlation between leptin and LH concentration during peri and postpartum to the onset of estrus postpartum in Bali cattle

The mechanism of the hypothalamus, pituitary, and ovaria is important in the early postpartum luteal activity. This study aims to measure levels of the leptin hormone, Luteinizing Hormone (LH) during the first-time postpartum estrus appears and to observe the signs of estrus. The study uses a prospective observational method. The samples were Bali cattle on peripartum conditionwhile postpartum estrus appeared from several sistem pertanian terintegrasi (Simantri) in Mengwi District, Badung Regency, Bali, Indonesia. The measured parameters were leptin levels, LH, and the onset of postpartum estrus. The technique of measuring hormone levels with the Direct Elisa method and Double Antibody Sandwich. The results showed there were a positive correlation (r=0.773) between leptin levels at peripartum and the onset of postpartum estrus.The higher level of leptin, the faster of postpartum estrus appears. However, a minimum leptin value is needed to increase the LH level so that expression of estrus appearance is clearly.

ULTRASOUND IMAGING OF POSTPARTUM UTERINE INVOLUTION AND OVARIUM DYNAMIC IN ONGOLE CROSSBREED COWS

This study aimed to determine ultrasound of uterine involution and postpartum ovarian dynamics on Ongole Crossbreed Heifer (PO) associated with postpartum estrus signs. This study used 6 PO cows which were divided into primiparous group and pluripara group. The observation of uterine involution and ovarian dynamics was started from the first day postpartum using ultrasonography (USG) with a linear probe rectally, while the reproductive organs images were recorded every 2 days. The results showed that the time needed for all reproductive organs of 3 primiparous groups to complete the uterine involution after parturition was 37.33±1.15 days when the diameter of the vagina, cervix uterine, corpus uterine, left cornua, and right cornua uterine were 3.14±0.00 cm, 2.86±0.00 cm, 3.20±0.06 cm, 4.66±0.01 cm, and 4.66±0.01 cm, respectively. The time needed for all reproductive organs of 3 pluripara groups to complete uterine involution postpartum was 38.67±1.15 days with the diameter of the vagina, cervix uterine, corpus uterine, left cornua, and right cornua uterine 3.18±0.00 cm, 2.70±0.02 cm, 3.08±0.02 cm, 4.42±0.01 cm, and 4.42±0.01 cm, respectively. The average times of the first and second ovulation of primiparous cattle were 27.67±1.15 and 47.67±1.15 days postpartum, whereas in pluripara group was 28.33±1.15 and 48.33±1.15 days postpartum. At first ovulation all cows were not accompanied by signs of estrus, while at the second ovulation 2 primiparous cows and 1 pluripara cow showed less obvious signs of estrus, 1 primiparous cow and 1 pluripara cow showed signs of medium estrus, and 1 pluripara cow showed clear estrus signs.

Different Treatment Protocols of Retained Fetal Membranes and its Effect on Serum Profile, Uterine Involution and Postpartum Fertility in Cows

This study was undertaken on 36 freshly calved cows randomly divided into 6 equal groups under field conditions. Cows of group-VI that shed placenta within 8-12 hours postpartum naturally served as healthy control. The cows with retained fetal membranes (RFM, n = 18) for more than 12 hrs were managed either by manual removal of placenta without antibiotics (group-I), parenteral antibiotic (Ceftiofur 1 g i/m) for three consecutive days (group-II) or a combination of both (group-III). In group-IV and group-V, cows were administered with Inj. Oxytocin @ 50 IU i/m and Inj. Dinoprost tromethamine (PGF2α) @ 25 mg i/m, respectively, immediately after parturition and time of placental shedding was recorded. The overall prevalence of Brucellosis by RBPT was found to be 5.55 % amongst these 36 animals. The placental expulsion in groups following medicinal treatment was found to be 50 (3/6) % in Ceftiofur alone by 3 days (group-II), and 66.67 (4/6) % in Oxytocin (group-IV) and 100 (6/6) % in PGF2α inj. (group-V) groups within 12 hrs. The time of uterine involution in groups I to VI was found to be 42.00 ± 1.94, 39.50 ± 0.99, 40.67 ± 1.39, 38.33 ± 1.55, 37.50 ± 1.02 and 37.33 ± 1.76 days, respectively, while the interval for the appearance of first postpartum estrus was 54.83 ± 2.06, 51.00 ± 1.05, 52.17 ± 1.96, 50.17 ± 2.03, 48.67 ± 1.90 and 49.17 ± 1.55 days, respectively, which did not vary statistically. The mean serum progesterone profile obtained on day 0 and day 21 postpartum was statistically non-significant between groups. However, it was significantly (p less than 0.05) lower on day 0 as compared to day 21 in group-I, II and VI. The levels on day 0 coincided with the time of blood sampling after calving. The high level of serum P4 on day 0 in group-IV and V could be due to sampling immediately after calving. The serum calcium and phosphorus levels were significantly(p less than 0.05) lower on day 0 than on day 21, but not the magnesium. The group effect was however non-significant for any of three minerals. It was observed that manual removal of RFM without parenteral antibiotics, resulted in puerperal metritis, cervicitis, pyometra which ultimately resulted into delayed uterine involution, delayed first postpartum estrus and thus, reduced the postpartum reproductive efficiency. It was inferred that the PGF2α and Oxytocin injections could be used as a treatment of choice for prevention of RFMs in cattle.

Impact of bypass fat and mineral supplementation peripartum on plasma profile of steroid hormones PGFM and postpartum fertility in Jaffarabadi buffaloes

Advanced pregnant Jaffarabadi buffaloes (n=40) of 2-4 parity selected on an organized farm were divided equally into control (routine farm feeding-RFF) and treatment/nutrients supplementation (RFF + bypass fat @ 150-200 g/h/d and ASMM @ 50 g/h/d) groups and were studied from 6 wks prepartum to 8 wks postpartum for plasma profile of steroid hormones and PGF2a metabolites on days -45, -30, -7, 0, +7, +15, +30, +45 and +60 peripartum as well as for puerperal events and postpartum fertility. Half of the buffaloes in both the groups also received parenteral microminerals (Inj. Stimvet 5 ml i/m) twice, 45 days before and on the day of calving. Again half of them were treated with ecbolic (Exapar) 2 boli bid for first 4 days postpartum. The mean plasma progesterone values were maximum (>4 ng/ml) on day 45 prepartum, which declined significantly (p less than 0.01) on day 7 prepartum reached to the basal levels (1 ng/ml) on the day of calving, remained basal till day 15, and thereafter showed a rising trend on days 30, 45 and 60 postpartum. The oestradiol-17b values were at its peak on the day of calving (p less tahn 0.01), showed a rapid fall by day 7 postpartum and remained low till recrudesce of follicular activity around day 45 and 60 postpartum. The levels of cortisol were significantly higher on the day of parturition as compared to values on day 7 pre- and post-partum. The plasma concentration of PGFM was low on day 45 prepartum, which increased gradually and significantly by almost 10-folds to reach peak values on the day of calving in both control and treatment groups and then declined gradually and significantly till day 45 postpartum. The rise was little more in nutrients supplemented group with higher mean values at most intervals peripartum than in control group. The periods for uterine involution, first postpartum estrus, and days open were significantly shorter with higher conception rate in nutrient supplemented group. It is concluded that the peripartum nutrient supplementation in Jaffarabadi buffaloes is beneficial and has positive effect on the postpartum fertility and plasma progesterone and PGFM profile.

Effect of Ecbolic Therapy on Postpartum Reproductive Parameters and Serum Hormonal Profile in Dangi Cows

The study was conducted on eighteen dystocia affected Dangi cows to evaluate the effect of ecbolic therapy on postpartum reproductive parameters as well as serum progesterone and estradiol-17β profile. The cows were randomly divided into three groups, each of 6 animals. The cows in Gr-I and Gr-II were injected with Methyl ergometrine (5 mg) and Dinoprost tromethamine (PGF2α, 25 mg) i/m, respectively, immediately after parturition and the cows of Gr-III received herbal ecbolic boli (2-4 boli, bid, PO) for first 10 days postpartum. The blood samples were collected on 0 day (day of calving), 7th day, 14th day, 21st day and 28th day postpartum from the jugular vein. The mean first postpartum estrus interval in Gr-I, Gr-II and Gr-III were 181.50 ± 44.73 days, 195.33 ± 23.38 days and 155.33 ± 27.81 days. The service period was 237.66 ± 28.01 days with 50 per cent (3/6) conception rate in Gr-I and 402.00 ± 46.12 days and 368.66 ± 53.46 days with 100 per cent (6/6) conception rate in each Gr-II and Gr-III, respectively. The postpartum estrus interval and service period did not differ significantly (p>0.05) between Gr-I, Gr-II and Gr-III. A highly significant (p less than 0.01) decrease in both progesterone and estradiol-17β concentration was observed on 7th day postpartum and thereafter fluctuated non-significantly with increasing trend on 14th , 21st and 28th day postpartum in all groups.