2 edition of Utilization of lipid by primiparous beef heifers during the postpartum period found in the catalog.
Utilization of lipid by primiparous beef heifers during the postpartum period
Shelby Jean Filley
Written in English
|Statement||by Shelby Jean Filley.|
|The Physical Object|
|Pagination||121 leaves, bound :|
|Number of Pages||121|
Postpartum nutrient intake can lessen the duration of postpartum anestrus, but it cannot compensate completely for low BCS and nutrient intake prior to calving. Even when thin cows gain body weight during the postpartum period they continue to ovulate later when . Dairy milk yield was recorded during the experimental period. In all cows, the first follicular wave postpartum was observed and 6 of the cows ovulated. The plasma glucose (PCited by:
Multiparous, spring-calving beef females (n = ) were utilized during three production years to study the effects of postpartum nutritional management on subsequent fertility and calf production. At critical times in the production cycle, a body condition score (BCS), using a numerical score ranging from 1 = emaciated to 9 = extremely fat Cited by: Abstract. The effects of different feeding strategies ( kg/d target ADG [LO] and kg/d target ADG [HI] during the lactation period (LACT; 0–6 mo) and theCited by:
Heifers (n = ) produced by these crosseswereborninandManagementprac-tices at USMARC are for the heifers to be bred early so that they calve early as 2-yr-olds and have a longer recovery period before rebreeding. Therefore, heifers were exposed to bulls for 63 d beginning on 10 May and for 61 d beginning on 21 May HeifersCited by: During 2 yr, Hereford and Hereford x Angus heifers (, n = 34; , n = 42) maintained on pasture were fed a protein supplement (40% CP either or kg/cow/d), during the last 90 d of gestation, so that they would calve with a BCS of 4 to 5.
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Inﬂuence of body condition at calving and postpartum nutrition on endocrine function and reproductive performance of primiparous beef cows1,2 N.
Ciccioli*, R. Wettemann*3, L. Spicer*, C. Late Gestation Supplementation Impacts Primiparous Beef Heifers and Progeny Adam F. Summers Stetson P. Weber T.L. Meyer Rick N. Funston1 Summary A two-year study utilizing primipa-rous heifers evaluated the influence of rumen undegradable protein (RUP) sup-plement level on heifer and progeny per-formance.
Heifers were individually fed. Effect of dietary energy on milk production and metabolic hormones in thin, primiparous beef heifers Article (PDF Available) in Journal of Animal Science 78(3) March with Reads.
Introduction. Age at first service is considered an important issue in beef cow–calf systems since it affects the reproductive performance during the productive lifespan of the cow (Lesmeister et al., ).In Uruguay, most beef cattle grow on native pastures with a high variation of productivity during the year which is also highly dependent on weather by: 1.
Effects of reduced in uteroand post-weaning nutrition on milk yield and composition in primiparous beef cows R. Waterman†, T. Geary, M. Petersen and M. MacNeila USDA-ARS, Fort Keogh Livestock and Range Research Laboratory, Fort Keogh Road, Miles City, MT, USA.
Influence of category-heifers, primiparous and multiparous lactating cows-in a large-scale resynchronization fixed-time artificial insemination program Márcio de Oliveira Marques, 1 Fábio Morotti, 2 Camila Bizarro da Silva, 2 Mario Ribeiro Júnior, 1 Rubens César Pinto da Silva, 1 Pietro Sampaio Baruselli, 3 Marcelo Marcondes Seneda 2.
The influences of body condition score (BCS) at calving and postpartum nutrition on endocrine and ovarian functions, and reproductive performance, were determined by randomly allocating thin (mean BCS = +/- ) or moderate condition (mean BCS = +/- ) Angus x Hereford primiparous cows to receive one of two nutritional treatments Cited by: primiparous heifers calving at different ages; to investigate the effect of early calf weaning from both primiparous and multiparous cows on the period of postpartum anestrus and fertility, as measured by pregnancy rate to both timed-AI and natural service; and to make the reader aware of management practices that can improve the productivity.
A 3-yr study was conducted to determine the effect of supplemental protein source on ADG, feed intake, calf birth BW, and subsequent pregnancy rate in pregnant beef heifers. Crossbred, Angus-based, AI-pregnant heifers (yr 1, n = 38; yr 2, n = 40; and yr 3, n = 36) were stratified by BW ( ± 10 kg) and placed in a Calan Broadbent individual Cited by: 8.
Milk production and reproductive data in crossbred primiparous cows in tropical area of Venezuela Brahman Brown Swiss Holstein Factors (n=32) SEM (n=19) (n=10) SEM Mean Mean SEM Mean Milk production (kg) accumulated at: 30 days postpartum a + ab + b + -First postpartum estrus a + 85 a + b + -First Cited by: beef farms in Southern Brazil under the same management.
Heifers (24 to 27 months old) and cows (36 to months old) were selected based on an adequate body condition score (BCS) and postpartum period, normal estrous cycles and health status. The primiparous and multipa rous lactating cows were Effect of prepartum administration of growth hormone-releasing factor on somatotropin, insulin-like growth factor I, milk production, and postpartum return to ovarian activity in primiparous beef heifers.
Journal of Animal Science – Cited by: of assistance at parturition in primiparous, two-year-old heifers was % and %, and reached % in some herds. Mortality rate by four weeks postpartum was 30% for assisted calves and 11 % for assisted heifers.
Methods of reducing the need for assistance at parturition in primiparous, two-year-old, beef breeding heifers would be of. Although the response to flushing is more variable in beef cattle (Lake et al., ; Mulliniks et al., ; Wetterman et al., ), it has been demonstrated that the use of flushing, prior to or during mating, in nutrient restrictive conditions, increased pregnancy rate in primiparous cows with moderate or low body condition score (BCS.
The primary objectives of this study were to investigate incidence of abnormal ovarian cyclicity (AOC) and its type in dairy and beef cows with prolonged postpartum period (>90 days) and in heifers that fail to conceive.
A total of 53 animals were included in the study: 17 Friesian crosses, 16 Braford crosses, eight Brangus crosses, and 12 local Kedah-Kelantan (KKX) by: 5.
CHAPTER 3 CASE STUDY: CALVING PRIMIPAROUS BRAFORD HEIFERS AT 2 VERSUS 3 YEARS OF AGE Introduction Beef heifers in Florida traditionally are reared to calve first at 3-y-old. However, in other parts of the country, many producers breed heifers as yearlings (13to mo-old) to calve at 2-y of age to improve productivity of young heifers.
The postpartum period in high-yielding dairy cows creates an enormous drain of nutrients in favor of milk yield which antagonizes the resumption of ovulatory cycles. Therefore, a study was undertaken to evaluate the association of changes in postpartum serum metabolites with resumption of ovarian cyclicity.
A total of 24 clinically healthy, freshly parturated primiparous (P-1) and multiparous Cited by: 3. During the average 36day period preceding the start of the breeding season, cow body weight declined across all treatment groups, but did not differ (P)(Table 4).Investigations by Patterson et al.
() with 2-yr-old heifers, that grazed dormant winter forage, indicate that metabolizable protein is a better formulation parameter than using. Uruguay. Primiparous Holstein heifers ( ± units of body condition score (BCS), 23 to 25 months of age Introduction During the transition period (from three weeks be-fore to three weeks after parturition) dairy cows (Bos taurus) undergo critical metabolic changes as Cited by: 4.
postpartum interval to pregnancy and increasing reproductive efficiency in beef cows. When cattle enter a negative energy balance during gestation, they tend to mobilize energy reserves and consequently suffer a reduction in BCS. It has been shown that when cows calve at a poor BCS (4 or less on a 9 point scale), increasing postpartum dietary Cited by: 1.
metabolic factors and ovarian function is not clear in the postpartum primiparous cow because they are still growing. The aim of the present study was to investigate in detail the time-dependent profile of the metabolic hormones, metabolites, and milk yields of ovulatory and anovulatory primiparous cows during the first follicular wave postpartum.and BCS gain in the postpartum period.
Other research (Freetly et al., J. Anim. Sci ) has reported compensatory reproduction. Additionally, the interaction of nutrients provided during the pre- and postpartum segments of beef production may also impact calf performance.
Objectives of .menting primiparous heifers grazing fall–winter range to meet MP vs CP requirements on BW and body condi-tion score change, 2-yr-old pregnancy, and the net pres-ent value of pregnant heifers. Materials and Methods. In –98 (1, heifers; kg) and –99 (1, heifers; kg), pregnant heifers at a commercial ranch.