scholarly journals Haematologic profile and prevalence survey of haemonchosis in various breeds of slaughtered cattle in Ibadan, Nigeria

2019 ◽  
Vol 46 (3) ◽  
pp. 151-162
Author(s):  
O. T. Jeremiah ◽  
O. G. Banwo
Keyword(s):  
Body Condition ◽  
Body Condition Score ◽  
Animal Health ◽  
Gastrointestinal Parasites ◽  
Control Measures ◽  
Economic Losses ◽  
Southwestern Nigeria ◽  
Prevalence Survey ◽  
Exact Test ◽  
Haematological Profile

This study was aimed at determining the haematological profile and prevalence ofHaemonchus parasites in cattle considering the breed, sex, age and body condition scores(BCS) of the animals. The study spanned over 12 months. Whole blood samples werecollected from various breeds of cattle with adult Haemonchus specimens from eachabomasum content of such animals slaughtered at a local abattoir in Ibadan, Southwestern Nigeria. Systematic random sampling method was adopted, with a working sample size of 322. The age and BCS of cattle sampled were estimated using rostral dentition technique and visual indicators, respectively. The adult Haemonchus worms were collected in normal saline and identified morphologically. The haematologic profile was determined using pocH- 100iV Diff® (Haematology System, Sysmex Animal Health Germany). Data obtained from this study were analyzed statistically using microsoft excel, SPSS (Version 20), and graphPad prism version 5.0 with Fisher's exact test Haematological profile in bovine haemonchosis showed anaemia with an overall mean packed cell volume (PCV) of 25.59±0.03%, whereas the apparently healthy cattle had a mean PCV of 34.52 ±0.02%. The overall prevalence of bovine haemonchosis was 16.6 %. Our findings revealed that prevalence of bovine haemonchosis varied with months, season, body condition score, age, breeds with no sex predisposition. There is a need for constant monitoring of gastrointestinal parasites, appropriate anthelminthic regimen and control measures to promote animal production and prevent huge economic losses as a result of subclinical, acute illness and death in severe levels of parasitism.  

8 Evaluation of puberty induction protocol in peripubertal beef heifers prior to fixed-time AI programs

2019 ◽  
Vol 31 (1) ◽  
pp. 129
Author(s):  
J. B. S. Borges ◽  
D. S. V. Luiz ◽  
P. R. L. Aguiar ◽  
C. G. B. Berlitz ◽  
G. S. Velho ◽  
...  
Keyword(s):  
Breeding Season ◽  
Body Condition ◽  
Body Condition Score ◽  
Animal Health ◽  
Hormonal Treatment ◽  
Fixed Time ◽  
P Value ◽  
Ovarian Activity ◽  
Beef Heifers ◽  
Condition Score

Beef heifers that conceive early during their first breeding season calve earlier, wean heavier calves, and tend to continue doing so throughout the rest of their reproductive lives. Otherwise, under extensively managed systems in Southern Brazil, only a variable proportion of 2-year-old beef heifers reach puberty before the start of the breeding season. The aim of this study was to evaluate a protocol to induce puberty in peripubertal beef heifers using injectable progesterone (P4) and oestradiol cypionate (EC) to improve pregnancy per AI (P/AI) in fixed-time AI (FTAI) programs. A total of 311 Angus heifers, 24±3 months of age, 3.1±0.3 body condition score (1=emaciated; 5=obese), and 328±41kg of body weight (BW), were examined before FTAI protocol (Day −24) by transrectal ultrasonography to determine reproductive tract score (RTS; 1=prepubertal; 5=pubertal). Prepubertal heifers (RTS 1; 12.8%, 40/311) were excluded from the study. Heifers with RTS=2 (n=271) were assigned to 2 groups: P4 (RTS 2 or 3, n=100) and cyclic (RTS 4 and 5, n=171). Peripubertal heifers were treated on Day −24 with 150mg of injectable P4 IM (Sincrogest® injectable, Ourofino Animal Health, Cravinhos, Brazil) and on Day −12 received 1mg of EC IM (Sincro CP®, Ourofino Animal Health). Cyclic heifers received no hormonal treatment before FTAI protocol. On Day 0, heifers in the P4 group were evaluated again to determine RTS, body condition score, and BW. Induction of puberty was defined by the presence of a follicle >8.5mm (RTS=4) or a corpus luteum (RTS=5). All heifers received an FTAI protocol consisting of 2mg of oestradiol benzoate IM (Sincrodiol®, Ourofino Animal Health) and an intravaginal progesterone implant (1 g; Sincrogest®, Ourofino Animal Health). On Day 8, heifers had implants removed and were injected with 1mg of EC and 500µg of sodium cloprostenol IM (Sincrocio®, Ourofino Animal Health). After 48h, all heifers received an FTAI. Thirty days after AI, the diagnosis of gestation was performed by ultrasonography. Statistics included chi-square and linear regression with coefficients analysed as independent variables, considering a significant P-value of 0.05. On Day 0, percentages of RTS 5, 4, and 3 in the P4 heifers were 37, 27, and 36%, respectively, resulting in 64% of puberty induction. The P/AI was similar (P=0.14) in P4-treated and cyclic heifers (59v. 50.3%, respectively). The regression analysis presented a linear and positive effect of BW on P/AI (P<0.001) in cyclic heifers and a positive influence of BW on RTS (P=0.05) and RTS on P/AI (P=0.008) in P4-treated heifers. The application of RTS system associated with P4 treatment of peripubertal heifers before FTAI protocol improved ovarian activity and might have contributed to higher P/AI, comparable with that achieved in cyclic heifers.

scholarly journals The effect of nematophagous fungus Duddingtonia flagrans on the gastrointestinal parasites in sheep

2011 ◽  
pp. 245-250
Author(s):  
Vesna Lalosevic ◽  
Mirjana Jarak ◽  
Simonida Djuric ◽  
Nemanja Obradovic
Keyword(s):  
Intestinal Parasites ◽  
Nematophagous Fungus ◽  
Gastrointestinal Parasites ◽  
Control Measures ◽  
Alternative Methods ◽  
Economic Losses ◽  
Duddingtonia Flagrans ◽  
Sheep Production ◽  
Loss Of Appetite ◽  
Sheep Feces

Sheep production has serious problems due to the spread of intestinal parasites. These parasites cause loss of appetite, maldigestion, slow growth in body weight and wool, all of which results in economic losses as well. The control measures of infestation with strongyloid parasites in ruminants have until now been based mainly on the organization of grazing and the use of antihelmintics. However, due to the occurrence of resistance, alternative methods of control have been introduced. The use of nematophagous fungus Duddingtonia flagrans, which is capable of decreasing the number of infectious larvae and eggs in feces, has been successful. The aim of this study was to determine whether Duddingtonia flagrans decreases the number of eggs of Trichostrongylus spp in sheep feces. Fecal samples of thirty-four sheep were examined and the parasites were found in twelve sheep, six of which were fed with the fungus, and six of which were used as the control. According to ?2 test, at the level of certainty of p<0,005, a statistically important difference in the number of eggs was observed between the sheep which were given the fungus and those which were not.

scholarly journals Study on Prevalence of Lungworm Infection and Associated Risk Factors of Cattle and Sheep Slaughtered at Gondar Elfora Abattoir, North West Ethiopia

2021 ◽  
Author(s):  
Baye Wodaje ◽  
Samrawit Melkamu ◽  
Basazenew Bogale
Keyword(s):  
Risk Factors ◽  
Body Condition ◽  
Body Condition Score ◽  
Animal Health ◽  
Age Groups ◽  
Clinical Signs ◽  
North West ◽  
Adult Age ◽  
Significant Difference ◽  
Cattle And Sheep

Abstract Background: Lungworms are parasitic nematode round worms that infest the lungs of ruminants. The infections have wide distribution in the world including Ethiopia. Epidemiological distribution of lung worm depends more on pasture contamination by carrier animals. Diagnosis is based on clinical signs, postmortem findings and laboratory testing (detecting lungworm larvae in faces). The aims of this study were to determine the current prevalence, identifying the species and assess the possible risk factors of lung worm infection in cattle and sheep at Gondar Elfora abattoir.Result: Out of 500 animals (240 cattle and 260 sheep) both coprological and postmortem examination were conducted. The overall occurrence of lungworm infection in both cattle and sheep were 3.75% and 7.31% respectively. The prevalence of lung worm in cattle and sheep in ante mortem inspection with respiratory problem was 8.00% and 19.51% respectively. Coprological prevalence of infection: in young and adult age groups of cattle was 7.04% and 2.37% and in sheep 6.8% and 7.9% respectively. With regard to body condition (poor, medium and good) having the prevalence of 13.64%, 3.3% and 0.00% in cattle and 16.2%, 5.35% and 7.33% in sheep respectively. It has significant difference with body condition score of cattle and sheep (p<0.05 The occurrence of identified lung worm in cattle was Dictyocaulus viviparous (3.75%); in sheep Dictyocaulus filaria (52.63%) higher than Muellerius capillaries (36.84%) followed by Protostrongylus rufescens(10.53%). Over all prevalence in cattle and sheep were 1.67% and 8.08% respectively. Finding with respect to young and adult age groups of cattle was 4.23%, 0.59%, and in sheep 7.48% and 8.85%. The identified lung worm species in sheep, mixed infection (42.85%) was higher than Dictyocaulus filarial (28.57%) followed by Muellerius capillaries (19.05%) and Protostrongylus rufescens (9.52%). Conclusions: Generally lungworm infection has a great effect on animal health and production. It needs emphasis to prevent and control to overcome this problem.

scholarly journals Coprological Detection of Bovine Fasciolosis in Federal Capital Territory, Abuja, Nigeria

2019 ◽  
Vol 1 ◽  
pp. 67-74
Author(s):  
Z Abubakar ◽  
R J Ombugadu ◽  
J D C Tongjura ◽  
G A Amuga ◽  
A B Yako
Keyword(s):  
Body Condition ◽  
Neglected Tropical Diseases ◽  
Body Condition Score ◽  
Elisa Test ◽  
Economic Losses ◽  
Faecal Samples ◽  
Condition Score ◽  
Body Condition Scoring ◽  
Gross Lesions ◽  
Liver Flukes

Bovine Fasciolosis is a vector – borne zoonosis and one of the most neglected tropical diseases that cause huge economic losses and poor animal conditions in Nigeria. The prevalence of Fasciolosis in Cattle slaughtered in the Federal Capital Territory, Abuja was investigated. Faecal samples were collected from the cattle antemortem and analysed using copro ELISA test-kits and gross lesions were inspected at postmortem. Out of one hundred and eighty six (186) faecal samples analysed, over-all prevalence was 98(52.7%). From each abattoir was 38 (38.8%), 36 (36.7%) and 24 (24.5%) at Karu, Dei-Dei and Gwagwalada abattoirs respectively. Based on body condition scoring, infection rates were 39 (58.2%), 45 (58.4%) and 20 (47.6%) from cattle with poor, moderate and good body conditions accordingly. Males had a higher prevalence rate of 48 (50%) than females with 40 (44.4%). Based on the breed of cattle, infection rate of the diseases was 41 (66.1%), 39 (62.9%) and 20 (32.3%) in White fulani, Sokotogudali and Red bororo accordingly. Out of 186 cattle inspected at postmortem, 47 livers were condemned totally due to the presence of liver flukes (Fasciola species) in the hepatic parenchyma, fluke tracts, livers were friable and chirrotic. This led to an estimated loss of about three million, one hundred and two thousand naira (3,102,000.00). There was no statistically significant association between the infection and breed, sex and body condition score (p>0.05). Treatment of all cattle with an effective flukicides, vector control, enlightening of cattle farmers for proper intervention against fasciolosis are recommended.

229 INFLUENCE OF HIGH OR LOW INTAKE OF DRY MATTER AND ENERGY ON IN VIVO PRODUCTION OF BOVINE EMBRYOS

2012 ◽  
Vol 24 (1) ◽  
pp. 227 ◽  
Author(s):  
R. S. Surjus ◽  
A. B. Prata ◽  
M. Borsato ◽  
M. C. Martins da Silveira ◽  
M. C. C. Mattos ◽  
...  
Keyword(s):  
Body Condition ◽  
Dry Matter ◽  
Embryo Quality ◽  
Body Condition Score ◽  
Animal Health ◽  
High Energy ◽  
Fertilization Rate ◽  
Energy Group ◽  
Condition Score

The aim of this study was to evaluate the influence of high or low dry matter (DM) intake and/or energy on embryo quality and production in vivo. Nonlactating Nelore cows (n = 32, 4 to 10 years old) weighing 489.5 ± 11.3 kg and with a body condition score of 3.25 (1 to 5) were used. After 15 days on the adaptation diet, cows were blocked by initial body weight (BW) and randomly divided in 4 experimental groups. The maintenance group (M) received a diet to provide 1.2% of DM/kg of BW. The restriction group (0.7M) received the equivalent of 70% of the group M diet (0.84% of DM per kg of BW). The high intake group (1.5M) received the equivalent of 150% of the M group (1.8% of DM/kg of BW). The energy group (E) received a diet with a DM similar to the M group but with an energy level equivalent to the 1.5 M group. All cows were submitted to aspiration of follicles >2 mm for ovum pick-up (OPU). Recovered oocytes were used in another experiment. The embryo donors received an intravaginal device (IVD) of progesterone release (Sincrogest®, Ouro Fino, Ribeirão Preto, Brazil), soon after OPU. Two days after OPU, the cows received 8 decreasing doses of FSH (100 mg, IM, Folltropin-V®, Bioniche Animal Health, Belleville, Ontario, Canada) and concomitant with the fifth and sixth treatments of FSH, PGF2α (500 μg each, IM, cloprostenol, Sincrocio®, Ouro Fino) was administered. The IVD was removed at the time of the last FSH injection. Twelve hours after IVD removal ovulation was induced with GnRH (0.01 mg, IM, Buserelin acetate, Sincroforte®, Ouro Fino). Cows were inseminated 12 and 24 h later. Embryo collection was performed 7 or 8 days after GnRH injection. The cows were offered all diets in a crossover design study. There were 4 sessions of embryos flushing, each 42 days apart. Data were analysed by PROC GLIMMIX of SAS (SAS Institute Inc., Cary, NC, USA) and the results are presented as least-squares means ± SE, always following the order of treatments 0.7 M, M, 1.5 M and E. There were differences in the superstimulatory response (12.6 ± 1.4b; 14.6 ± 1.6a; 13.6 ± 1.5ab; and 11.0 ± 1.2c follicles >6 mm; P < 0.01) and superovulatory response (9.8 ± 1.3ab; 11.0 ± 1.4a; 10.2 ± 1.3a; and 8.6 ± 1.3b CL; P < 0.01) among groups. Despite the lower responses observed especially in the high-energy group, no difference among groups was observed for total embryos/ova (4.5 ± 0.7; 5.0 ± 0.8; 5.0 ± 0.8; and 4.7 ± 0.7; P = 0.60), viable embryos (2.0 ± 0.4; 2.3 ± 0.5; 2.6 ± 0.6; and 2.2 ± 0.5; P = 0.40), or freezable embryos (1.7 ± 0.4; 2.0 ± 0.4; 2.1 ± 0.5; and 1.9 ± 0.4; P = 0.60). There was also no difference among groups for fertilization rate (75.8 ± 9.6; 82.3 ± 8.0; 87.8 ± 6.6; and 81.1 ± 8.4%; P = 0.71) and percentage of viable embryos (54.5 ± 10.8; 50.8 ± 10.6; 50.5 ± 10.9; and 54.4 ± 10.7%; P = 0.98). In conclusion, in contrast to our initial hypothesis, a period of 42 days under high feed/energy intake in nonlactating zebu cows apparently did not compromise in vivo embryo production. This may be because cows had a moderate body condition score or because the feeding period was not long enough to compromise oocyte/embryo quality. Financial support from FAPESP and CNPq is acknowledged.

32 USE OF HORMONE WITH ACTION FOLLICLE-STIMULATING IN OVULATION SYNCHRONIZATION OF CROSSBRED HOLSTEIN-GYR COWS

2010 ◽  
Vol 22 (1) ◽  
pp. 174
Author(s):  
V. A. Nascimento ◽  
G. S. Moura ◽  
M. Dias ◽  
F. A. Oliveira ◽  
A. R. Dias ◽  
...  
Keyword(s):  
Pregnancy Rate ◽  
Body Condition ◽  
Buenos Aires ◽  
Body Condition Score ◽  
Animal Health ◽  
Live Weight ◽  
Fixed Time ◽  
Estradiol Benzoate ◽  
Sao Paulo ◽  
São Paulo

The objective of this study was to evaluate the administration of the follicle-stimulating hormone (FSH-p) or equine chorionic gonadotropin (eCG) in protocols of ovulation synchronization. One hundred forty-nine crossbred Holstein-Gyr cows were used in 2 properties in Minas Gerais and 3 treatments: TControl (n = 49 cows), Day 0: insert of a progesterone device (Primer®, Tecnopec, São Paulo, Brazil) + 2 mg of estradiol benzoate (RIC-BE®); Day 8: removal of Primer + 112 mg of D-cloprostenol (Prolise®, ARSA SRL, Buenos Aires, Argentina) + 1 mg of estradiol benzoate and fixed-time artificial insemination (FTAI) accomplished 44 h after the removal of Primer; TFSH (n = 50 cows), similar to TControl, but on Day 8, 15 mg of FSH-p (Folltropin®, Bioniche Animal Health) was administered; TeCG (n = 50 cows), similar to TControl, with administration on Day 8 of 300 IU of eCG (Novormon®, Syntex SA, Buenos Aires, Argentina). Cows that returned to estrus 14 to 28 days after the FTAI were inseminated once again. For all statistical analysis, we used the program SAS 9.0 (2002; SAS Institute Inc., Cary, NC, USA) at 5% probability. Quantitative variables (live weight, days postpartum, follicular average per cow) were analyzed by variance, and body condition score by Friedman test. The pregnancy rates were submitted to logistic analysis considering the effect of local experimental factors and were analyzed by Spearman correlation among the variables studied and the pregnancy rate. There was no difference (P > 0.05) between treatment for pregnancy rate in FTAI protocols (TControl = 40.82%; TFSH = 38.00%; TeCG = 26.00%), in the first insemination after FTAI (TControl = 56.25%; TFSH = 70.59%; TeCG = 68.42%), and in FTAI plus first insemination after FTAI (TControl = 59.18%; TFSH =62.00%; TeCG = 52.00%), as well as for the estrus repetition (TControl = 55.17%; TFSH = 54.84%; TeCG = 51.35%) and the correlation (P > 0.05) among the pregnancy rate and postpartum period, milk production, body weight and body condition. No effect was observed on the pregnancy rate by the addition of the hormones FSH and eCG in the protocol of ovulation synchronization in crossbred Holstein-Gyr cows; however, reinsemination in the period from 14 to 28 days after FTAI increased the pregnancy rate. CNPq; FAPEMIG; TECNOPEC/São Paulo, Brazil.

Body Condition Score (BCS) and Body Weight of Nellore Brown Sheep at Various Reproductive Stages in Different Systems of Rearing

2021 ◽  
Author(s):  
B. Rangamma ◽  
A. Sarat Chandra ◽  
N. Rajanna ◽  
M. Gnana Prakash ◽  
M. Venkateswarulu ◽  
...  
Keyword(s):  
Body Weight ◽  
Body Condition ◽  
Body Condition Score ◽  
Animal Health ◽  
Meat Production ◽  
Daily Routine ◽  
Research Station ◽  
Lactation Period ◽  
Condition Score ◽  
Pregnancy And Lactation

Background: Body Condition Score in sheep was used to evaluate the adequacy of previous feed supply, decide potential feed requirements in the future, evaluate individual animal health status, decide animal condition during daily routine, welfare inspection and in meat production systems.Methods: 60 Nellore brown ewes from Livestock Research Station, Mamnoor, Warangal district was randomly allotted to three rearing systems i.e Intensive (G1), Semi-intensive (G2) and Extensive (G3) system of each 20 animals. BCS and Body weight of the sheep was recorded at various reproductive stages i.e. just before breeding of animals, during pregnancy and lactation period to assess the nutritional status and reproductive performance of the sheep.Result: The mean average body weight (Kg) of pregnant ewes in G2 group had no significant (P less than 0.05) difference with G3 group. The average mean body weight (Kg) of ewes in G1 (27.58 ± 0.37kg) group had significant (P less than 0.05) difference with G2 (25.50 ± 0.32kg) group during lactation period of 90 days. The total gain of BCS during pregnancy period in the G1, G2 and G3 groups were 0.63 ± 0.06, 0.53 ± 0.06 and 0.44 ± 0.11, respectively. The overall mean BCS of the ewes 48hrs after lambing was higher in G1 (3.0 ± 0.10) group followed by G2 (2.73 ± 0.10) and G3 (2.38 ± 0.08) group.

scholarly journals Evaluating Impacts of a One Health Approach to Companion Animal Health and Management in a Remote Aboriginal Community in the Northern Territory, Australia

Animals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1790
Author(s):  
Tamara Riley ◽  
Raymond Lovett ◽  
Joanne Thandrayen ◽  
Bonny Cumming ◽  
Katherine A. Thurber
Keyword(s):  
Health Outcomes ◽  
Human Health ◽  
Body Condition ◽  
Program Implementation ◽  
One Health ◽  
Body Condition Score ◽  
Animal Health ◽  
Northern Territory ◽  
Health Clinic ◽  
Dog Bite

This study evaluated a community-driven animal health and management program in the remote community of Wadeye, Northern Territory. This evaluation used a pre-post design to assess changes in animal and human health outcomes over a 12-month period of program implementation, from June 2018 to June 2019. The evaluation assessed the program by comparing animal health outcomes before versus one year after program implementation and comparing human health outcomes before versus during the first 12 months of the program. Outcome measures included the desexing status of dogs and cats, body condition and hair score of dogs, and rates of people presenting to the health clinic for a dog bite. Animal health outcomes significantly improved after program implementation. From pre to post program, there was a 77% increase in the prevalence of good body condition score among dogs and a 9% increase in the prevalence of good hair score among dogs, and the prevalence of desexed dogs and cats more than doubled. There was no significant change in the number of people presenting to the health clinic for a dog bite. Consideration on how to further incorporate human and environmental health aspects into the program could be useful for future One Health programs.

scholarly journals Occurrence of Fasciola gigantica and Paramphistomum spp Infection in Aceh Cattle

2020 ◽  
Vol 151 ◽  
pp. 01025
Author(s):  
Muhammad Hambal ◽  
Rizka Ayuni ◽  
Henni Vanda ◽  
Amiruddin Amiruddin ◽  
Farida Athaillah
Keyword(s):  
Body Condition ◽  
Body Condition Score ◽  
Fasciola Gigantica ◽  
The Body ◽  
Economic Losses ◽  
Aceh Province ◽  
Condition Score ◽  
Cattle Farming ◽  
Banda Aceh

Fasciola gigantica and Paramphistomum spp. are trematode helminth causing severe economic losses in cattle farming in Aceh Province, Indonesia. This study was conducted to examine the correlation between the prevalence of F. gigantica and Paramphistomum spp infections with the body condition and sex of Aceh cattle. In total, 103 cattle (50 males and 53 females) from an abattoir in Banda Aceh were used. The body condition score was recorded and the number of fluke eggs in feces was examined coproscopically. The results showed that F. gigantica prevalence was 41% and 72% in females and males, respectively, whereas, the prevalence of Paramphistomum spp in females and males was 81% and 72%, respectively. The average number of fasciola eggs was 2.55 eggs/ g feces and 2.75 eggs/ g feces in females and males, respectively, The average number of Paramphistomum spp eggs was 127.6 eggs/g feces and 36.8 eggs/ g feces in males, and female respectively. Based on the Body Condition Score (BCS), the prevalence of both trematodes was higher in the skinny cattle (BSC 2 and 3). This study established that the infection of Fasciola in BCS 3 was higher than BCS 2 and 4. Male cattle were more susceptible to infection than females.

scholarly journals Influence of an immune-modulatory feed supplement on performance and immune function of beef cows and calves preweaning

2020 ◽  
Vol 98 (3) ◽  
Author(s):  
Tyler S Crook ◽  
Paul A Beck ◽  
Shane Gadberry ◽  
Michael B Sims ◽  
C Brandon Stewart ◽  
...  
Keyword(s):  
Body Condition ◽  
Body Condition Score ◽  
Animal Health ◽  
Late Summer ◽  
Beef Cows ◽  
Beef Industry ◽  
Data Loggers ◽  
Daily Rate ◽  
Condition Score ◽  
Nutritional Compounds

Abstract The ability to positively alter immune and stress response with nutritional compounds is of great interest and importance to the beef industry. There is a proprietary product (OmniGen-AF [OG]; Phibro Animal Health, Quincy, IL) reported to have performance-enhancing benefits by altering animal response to stress and immune challenges. The objective of this 2-yr research project was to study the effect of supplementing OG to beef cows and their calves on breeding and growth performance. One hundred and twelve multiparous beef cows and 48 primiparous cows were randomly assigned to treatment in year 1; control (CON, no OG; n = 56 multiparous and 24 primiparous) or treatment (OG fed at 8.8 g/100 kg body weight [BW]; n = 56 multiparous and 24 primiparous). Multiparous cows (mean ± SD = 6.4 ± 0.4 yr; BW = 589 ± 9.2 kg; body condition score [BCS] 6.2 ± 0.07) were used in both years of the experiment and primiparous cows (mean ± SD = 2.1 ± 0.04 yr of age, weighed 400 ± 7.5 kg, and BSC of 5.6 ± 0.06) were only used in the first year of the experiment. CON and OG supplements were offered over two production cycles beginning in December approximately 60 d prior to projected calving through pre-breeding in May of each year. Calves from treatment cows were offered treatments in a creep supplement limited to a daily rate of 1% as-fed of BW prorated for 3-d/wk feeding from mid-July through weaning with OG offered at 8.8 g/100 kg BW. Primiparous cow’s BW, BCS, and calf performance were not affected by treatment (P ≥ 0.15) in year 1. BW of multiparous OG cows tended (P = 0.10) to be heavier at weaning in year 1 and was greater (P = 0.05) at the onset of the experiment in year 2. Body condition of OG cows was greater (P ≤ 0.02) at weaning in both years 1 and 2, as well as at the onset of the experiment in year 2. Calves fed OG from the mature cows gained more (P = 0.05) BW during the creep feeding period than CON. Core body temperatures of OG heifers measured during the late summer with intravaginal temperature data loggers tended (P ≤ 0.10) to be less at 1400 and 1700 hours and were less (P = 0.05) at 1800 hours than CON heifers. Feeding OG did not result in changes (P = 0.25) in serum titer response to the BVD virus of calves during year 2. The results of the current experiment indicate feeding OG to beef cows and calves can result in improvement in BCS of cows, enhance weight gain of calves preweaning, and reduce heat loads in heifer calves during the late summer.

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