scholarly journals Comportamiento productivo y reproductivo de vacas Nelore de diferentes edades en un sistema a pastoreo del trópico boliviano

2019 ◽  
pp. 77
Author(s):  
Atsuko Ikeda ◽  
Juan Pablo Garzón ◽  
Edis Macías Rodríguez ◽  
Pablo Roberto Marini
Keyword(s):  
Body Condition ◽  
Reproductive Behavior ◽  
Research Work ◽  
Live Weight ◽  
The Body ◽  
Calving Interval ◽  
Santa Cruz ◽  
Palabras Clave ◽  
Grazing System ◽  
Interval Weight

Productive and reproductive behavior of Nelore cows of different ages in a grazing system of the Bolivian tropics Resumen El objetivo del trabajo fue evaluar el comportamiento productivo y reproductivo de vacas adultas y en crecimiento de la raza Nelore en condiciones de pastoreo del trópico boliviano. El trabajo de investigación se realizó de octubre de 2016 a octubre de 2017 en la Hacienda Ganadería E7, Santa Cruz, Bolivia. Se utilizaron 100 vacas para el estudio. Se dividieron en dos grupos: Grupo adulto: GA, 28 vacas ≥ 5 años de edad y Grupo en crecimiento: GC, 72 vacas ≤ 5 años de edad. Los pesos entre ambos grupos analizados para GA y GC mostraron diferencia entre ellas (p≤0,05) durante todo el ensayo. Las vacas adultas tuvieron los menores intervalo parto-parto (GA: 380±28; GC: 506 ±18 días, p≤0,003), El estado corporal entre ambos grupos analizados también mostró diferencias entre los grupos (p≤0,05) el mejor estado corporal (GA: 2,4±0,06; GC: 2,2±0,02, p≤0,002), el mayor peso vivo adulto (GA: 461 ±7; GC: 418±5 kg, p≤0,0001) y mayor peso del ternero sin mostrar diferencias p≥0,05 (GA: 34,1±0,8; GC: 32,3±0,5 kg). Se concluye que las vacas adultas poseen un mejor comportamiento productivo y reproductivo, y además sería importante mantener en el rodeo un porcentaje mayor de ellas para los sistemas estudiados. Palabras clave: peso adulto; estado corporal; intervalo parto-parto: peso el ternero al nacimiento Abstract The objective of the work was to evaluate the productive and reproductive behavior of adult and growing cows of the Nelore race under grazing conditions of the Bolivian tropics. The research work was carried out from October 2016 to October 2017 at rancher farm E7 in Colonia San Juan, Santa Cruz, Bolivia. 100 total cows were used for the study. They were divided into two groups: Adult group: GA, 28 cows ≥ 5 years of life and Growing group: GC, 72 cows ≤ to 5 years of life. The weights between both groups analyzed for GA and GC showed differences between them (p≤0.05) throughout the trial. The body condition between both groups analyzed also showed differences between the groups (p≤0.05). Adult cows had the lowest calving interval (GA: 380 ± 28, GC: 506 ± 18 days, p≤0.003), the best body condition (GA: 2.4 ± 0.06, GC: 2.2 ± 0.02, p≤0.002), the highest live weight (GA: 461 ± 7, GC: 418 ± 5 kg, p≤0,0001) and greater weight of the calf without showing differences p≥0.05 (GA: 34.1 ± 0.8, GC: 32.3 ± 0.5 kg). It is concluded that adult cows have a better productive and reproductive behavior, and it would also be important to maintain a greater percentage of them in the herd for the systems studied. Keywords: adult weight; body condition; calving interval; weight the calf at birth.

Effect of herbage allowance on productive and reproductive responses of primiparous beef cows grazing on Campos grassland

2018 ◽  
Vol 58 (9) ◽  
pp. 1615 ◽  
Author(s):  
Martín Claramunt ◽  
Andrea Fernández-Foren ◽  
Pablo Soca
Keyword(s):  
Body Condition ◽  
Body Condition Score ◽  
Block Design ◽  
Beef Cows ◽  
Climatic Conditions ◽  
The Body ◽  
Stocking Rate ◽  
Early Postpartum ◽  
Grazing System ◽  
Condition Score

The effects of two levels of herbage allowance (HA, kg DM/kg liveweight (LW)) on forage mass and chemical composition, cow body condition score, cow LW, stocking rate, productive and reproductive responses were evaluated during two consecutive years. Eighty primiparous spring-calving beef cows were allocated to a completely randomised block design of two HA that had an annual average of 2.5 (low) and 4.0 kg DM/kg LW (high) from –150 to 195 days postpartum. The grazing system was continuous, and the put-and-take method was employed to adjust HA. At 86 ± 12 days postpartum, all cows were submitted to calf suckling restrictions with nose plates (12 days) and dietary flushing (2 kg/cow.day of whole-rice bran for 22 days), 6 days before bull introduction. Forage mass was affected by HA (P = 0.004) and year (P = 0.014); the high HA had a greater forage mass than the low HA (1474 vs 1212 ± 86 kg DM/ha; P < 0.05), and Year 2 had a greater forage mass than Year 1 (1545 vs 1134 ± 78 kg DM/ha; P < 0.05). Stocking rate was affected by HA and season (P = 0.0004) interaction. The stocking rate during autumn and spring was greater in low than high HA, and no differences were identified in winter and summer. The body condition score was improved in high HA during autumn and resulted in a greater winter (mid-gestation) body condition score than the low HA without differences during spring-summer (postpartum). Cow LW was lower during autumn, winter and early postpartum (16 days postpartum) in low HA in Year 1 than high HA of Year 1 and high and low HA cows in Year 2. Furthermore, the probability of total pregnancies (0.88 vs 0.59 ± 0.07; P = 0.01) and the calf weight adjusted to 205 days (194 vs 175 ± 16 kg; P < 0.05) were greater in high HA. Calf weight adjusted to 205 days (Year 1: 192 vs Year 2: 177 ± 16 kg; P < 0.05) and survival curves of postpartum anoestrus (P = 0.01) were affected by year but did not affect the probability of conception, early or total pregnancies. In conclusion, the reproductive and productive responses of primiparous beef cows grazing Campos grasslands were improved in high HA and could contribute to alleviating adverse climatic conditions effects.

scholarly journals Effect of di-calcium phosphate on calcium balance and body condition score of dairy cows fed Napier grass

2014 ◽  
Vol 43 (3) ◽  
pp. 197-201
Author(s):  
MZ Rahman ◽  
MY Ali ◽  
KS Huque ◽  
MAI Talukder
Keyword(s):  
Calcium Phosphate ◽  
Dairy Cows ◽  
Body Condition ◽  
Body Condition Score ◽  
Research Work ◽  
Live Weight ◽  
Napier Grass ◽  
Calcium Balance ◽  
Significant Difference ◽  
Condition Score

A research work was undertaken to evaluate the feeding effects of di-calcium phosphate (DCP) on calcium balance and body condition score of dairy cows fed Napier grass. The trial was conducted in the village Alokdiar of Shajadpur upazilla under Sirajgonj district. Twenty crossbred lactating dairy cows of 320 ±15.5 kg live weight were used for the trial. Animals were equally and randomly allocated into four groups, T0 (Napier+concentrate), T1 (Napier+concentrate+100g DCP), T2 (Napier+concentrate+150g DCP) and T3 (Napier+concentrate+200g DCP). Total DMI did not differ significantly (p>0.05) among the groups but highly significant differences (p<0.01) were found in Ca intake. Ca balance; and Ca in feces, Ca in urine, Ca in milk and total Ca excretion differed significantly (p<0.05). No significant  difference (p>0.05) was found in DM in feces (%), DM in feces (kg/d) and milk production (L) among the treatment groups except urine excretion. There was a linear increase of body condition score (BCS) with DCP (T1, T2 and T3), but BCS was linearly declined in non DCP diet (T0). Diets with 150g DCP may be suggested for optimizing Calcium balance and body condition score of dairy cows fed Napier grasses.DOI: http://dx.doi.org/10.3329/bjas.v43i3.21648 Bang. J. Anim. Sci. 2014. 43 (3): 197-201

scholarly journals Reproductive qualities and milk productivity of black-and-white cows depending on sire lineage

2020 ◽  
Vol 50 (5) ◽  
pp. 47-55
Author(s):  
S. L. Belozertseva ◽  
L. L. Petrukhina
Keyword(s):  
Milk Yield ◽  
Research Work ◽  
Live Weight ◽  
Reproductive Capacity ◽  
Calving Interval ◽  
Milk Productivity ◽  
Black And White ◽  
Service Period ◽  
Significant Difference

The paper presents the results of studying the effect of sire lineage on reproductive qualities and milk yield of cows. The study was carried out inIrkutskregion on a herd of Holsteinized black-andwhite cattle of Pribaikalsky type. The analysis of the main characteristics of reproductive capacity of herd cows on a farm was performed during 2013–2018. The material of the research work was based on the informational database of animals from the program of breeding register Selex. Cows were divided according to sire lineage and milk productivity into five groups by the level of milk yield: from 5000 to6500 kg, 6501-8000, 8001-9500, 9501-11000 and more than11001 kg. Successful insemination of heifers took place at the age of 15.7-16.6 months with the live weight of more than400 kg, which corresponds to zootechnical standards. The earliest (15.7 months) insemination was in heifers of Reflection Sovereign sire line, the age of first calving was 753 days with the live weight of561 kg. The latest (498 days) successful insemination was observed in heifers of Montvik Chieftain bull line with the live weight of498 kg. Cows of Sealing Trygen Rocket (8766 kg) and Reflection Sovereign (8704 kg) sire lines had the highest milk productivity with a significant difference (p ≥ 0.90). The cows of these lines had the longest service period (164 and 179 days), as well as the length of the calving interval (445 and 458 days), respectively. The coefficient of reproductive capacity of cows of different sire lines ranged from 0.80 to 0.88, which is a low indicator.

scholarly journals Effect of body condition score and live weight of fertility of merino sheep after induction of oestrus in the out-of-breeding season

2015 ◽  
Vol 31 (2) ◽  
pp. 235-243
Author(s):  
P. Slavova ◽  
S. Laleva ◽  
Y. Popova
Keyword(s):  
Breeding Season ◽  
Body Condition ◽  
Body Condition Score ◽  
Live Weight ◽  
The Body ◽  
Physiological Status ◽  
Merino Sheep ◽  
Condition Score ◽  
Score Method ◽  
Concentrate Mixture

?bject of the study were merino sheep raised in the farm of the Agricultural institute - Stara Zagora. The experiment was conducted with a group of 68 animals of different ages, lambing after treated with hormonal preparation according to adopted scheme during the out-of-breeding season - in May. In the experimental group were included ewes which lambed earlier without making a selection in respect to their productivity. Animals were kept under the same conditions (stall-pasture) and fed the same rations with the concentrate mixture, rough, succulent feed and grazing in quantity and composition according to their physiological status and season from the fertilization until lambing. Hormonal pattern: setting pads for sheep type Sincro-part (30mg), removing pads after 12 days and giving ewes a PMSG injection at a dose of 500 UI, applying artificial insemination at the 50-55th hour. Body condition score and live weight of the animals were determined in 4 separate periods: 1st period (after mating), 2nd period (during pregnancy), 3rd period (after lambing), 4th period (before next mating service). Improving fertility in merino sheep is significantly influenced by the preparation of ewes for the mating by reaching the respective physiological status which is expressed by score over 2.5 according to the Body condition score method and live weight over 60 kg. Animals scored 2.75-3.50 before mating have a share of 91.18% from all the sheep in the flock and have the biggest number of lambs.

scholarly journals PROPHYLACTIC IMMUNODEFICIENCY OF DOGS COMPLEX BIOLOGICAL PREPARATION

2021 ◽  
pp. 66-74
Author(s):  
В.Г. СЕМЕНОВ ◽  
А.А. ИШТУДОВ ◽  
Д.А. НИКИТИН ◽  
В.А. АЛЕКСЕЕВ ◽  
А.С. ТИХОНОВ
Keyword(s):  
Research Work ◽  
Live Weight ◽  
Hemoglobin Concentration ◽  
The Body ◽  
Service Dogs ◽  
Humoral Factors ◽  
Veterinary Clinic ◽  
Biological Preparation ◽  
The Right ◽  
Experimental Group

Цель работы – изучение морфофизиологического профиля и неспецифических защитных сил организма служебных собак в условиях кинологического центра на фоне профилактики иммунодефицита биопрепаратами Dоg-Stim-N-B и Prevention-N-Е. Методология. Исследовательская работа проведена в условиях центра кинологической службы МВД и ветеринарной клиники «Айболит» г. Чебоксары на протяжении 2016-2020 гг. Для проведения научно-исследовательской работы подобрали три группы собак одной породы двухмесячного возраста по 5 особей в каждой (контрольная, 1-я и 2-я опытные). С целью профилактики иммунодефицита организма собакам опытных групп выполнили двукратное внутримышечное инъецирование биопрепаратов Prevention-N-Е (1-я опытная) и Dоg-Stim-N-B (2-я опытная) в дозе 0,1 мл на 1 кг живой массы. Результаты. Двукратная внутримышечная инъекция служебным собакам 1-й и 2-й опытных групп биопрепаратов Dоg-Stim-N-B и Prevention-N-Е на 61-63 и 68-69 сутки после рождения повышала концентрацию гемоглобина в крови по сравнению с контролем на 2,0-5,0 и 4,0-15,0 г/л, количество красных кровяных телец – на 1,09 и 1,10×1012/л, уровень общего белка – на 2,8-5,4 и 2,8-8,2 г/л, в том числе альбуминов – на 2,5-3,4 и 3,3-4,3 г/л, а γ-глобулинов – на 0,8-2,4 и 0,3-2,9 г/л. Кроме того, биопрепараты способствовали активизации клеточного и гуморального звеньев неспецифической устойчивости организма. Заключение. Разработанные биопрепараты Dоg-Stim-N-B и Prevention-N-Е стимулируют гемопоэз, развивают физиологическую эозинофилию, нейтрофилопению со сдвигом ядра вправо и лимфоцитоз, активизируют обмен белка, синтез альбуминов и γ-глобулинов, повышают активность клеточных и гуморальных факторов неспецифической резистентности организма. The purpose of the work – study of morphophysiological profle and non-specifc protective forces of the body of service dogs in the conditions of a canine center against the background of prevention of immunodefciency with biological preparation Dog-Stim-N-B and Prevention-N-E. Methodology. Research work was carried out in the conditions of the center of the canine service of the Ministry of Internal Afairs and the Aibolit veterinary clinic in Cheboksary during 2016-2020. For research work, 3 groups of dogs of one breed were formed at the age of 2 months, 5 heads in each group. In order to prevent immunodefciency of the body, dogs of the 1st experimental group were injected intramuscularly with the biopreparation Prevention-N-E at a dose of 0.1 ml/kg of live weight twice on the 61-63 and 68-69 day after birth, dogs of the 2nd experimental group at the same dose and at the same time injected with the biopreparation Dog-Stim-N-B. Results. Two-fold intramuscular injection to service dogs of the 1st and 2nd experimental groups of DogStim-N-B and Prevention-N-E biologics on the 61-63 and 68-69 day after birth increased blood hemoglobin concentration compared to 2 control.0-5.0 and 4.0-15.0 g/l, number of red blood cells - by 1.09 and 1,10 × 1012/l, the concentration of total protein - on 2.8-5.4 and 2.8-8.2 g/l, including the albumin fraction - on 2,5-3.4 and 3.3-4.3 g/l a γ-globulin - by 0.8-2.4 and 0.3-2.9 g/l. In addition, biologics contributed to an increase in plasma lysozyme activity and bactericidal activity of dog blood serum, which indicates an activation of the humoral link of the body's nonspecifc resistance. Conclusion. Biopreparation Dog-Stim-N-B and Prevention-N-E activate hematopoiesis, cause physiological eosinophilia, neutrophylopenia with neutrophilic nucleus shift to the right and lymphocytosis, stimulate protein exchange, synthesis of albumins and γ-globulins, increases cellular and humoral factors of non-specifc resistance

scholarly journals Early emergence of axons and formation of accessory nerve (XI) in avian embryos

2016 ◽  
Vol 1 (3) ◽  
pp. 654-659 ◽  
Author(s):  
Ziaul Haque ◽  
Azimul Haque ◽  
Qin Pu ◽  
Ruijin Huang
Keyword(s):  
Weight Gain ◽  
Nitrogen Balance ◽  
Control Diet ◽  
Research Work ◽  
Nitrogen Retention ◽  
Live Weight ◽  
The Body ◽  
Control Group ◽  
Feed Conversion ◽  
Feeding Effect

A research work was undertaken to evaluate the feeding effect of tree forages on performance of growing sheep. Twenty growing sheep (in 4 groups) were fed three different tree forage diets. Tree forages Melia azardirachta, Leucaena leucocephala and Artocarpus heterophyllus were supplied in three treatments except one consisted no tree forages which was considered as control. There were significant (p<0.05) differences among the animal groups in terms of total DM and ME intake, although there were no significant differences in the digestibility of DM, OM, CP and ADF. Feeding of tree forages had significant (p<0.05) effect on live weight gain of sheep. Animals fed with tree forage based diets significantly increased weight gain (60.70 and 50.70 g/d for L. leucocephala and A. heterophyllus, respectively) compared to that (45.66 g/d) of control group fed with silage. Feed conversion efficiency (kg feed/kg gain) also showed that animals fed with tree forage of L. leucocephala and M. azardirachta based diets were having significantly (p<0.05) higher efficiency (11.33 and 11.47, respectively) compared to those of A. heterophyllus and control diet (13.77 and 13.33, respectively). The results of nitrogen balance of M. azardirachta and L. leucocephala tree forage had significantly (p<0.05) positive effect on the nitrogen retention in the body of the animals. Intake of all the tree forages was not similar which indicated that all of them were not accepted to the lamb in same level. So, diets with tree forages of L. leucocephala resulted better in terms of weight gain, digestibility and nitrogen balance compared to A. heterophyllu, M. azardirachta and silage (control).Asian J. Med. Biol. Res. December 2015, 1(3): 654-659

scholarly journals Determining the factors affecting the gestational length in sheep

2021 ◽  
Vol 64 (1) ◽  
pp. 83-89
Author(s):  
Hilal Tozlu Celik ◽  
Fatih Ahmet Aslan ◽  
Yeliz Kasko Arıcı ◽  
Metehan Eser Kahveci ◽  
İbrahim Kiper
Keyword(s):  
Body Condition ◽  
Body Condition Score ◽  
Live Weight ◽  
Positive Association ◽  
The Body ◽  
Body Measurements ◽  
Gestational Length ◽  
Mating Period ◽  
Factors Affecting ◽  
Birth Type

Abstract. This research aimed to determine the effects of body weight, the body condition score (BCS), body measurements, birth type (single offspring or twin birth), birth weight and sex on the gestational length in sheep (n=111). Karayaka sheep raised on a private farm were used in the study. Progeny yield characteristics in sheep were also determined (n=139). Estrus was monitored daily using teaser rams from August to September 2016. According to our findings, the pregnancy rate, infertility rate, fecundity, and twin and single birth rates were 93.52 %, 6.48 %, 93.52 %, 14.62 % and 85.38 % respectively. The effect of age on the BCS in sheep at mating was found to be significant (P<0.05): BCS decreased as age increased. It was determined that there was a positive association between the BCS and live weight during the mating period (P<0.001). The chest circumference, front shin circumference and body length were found to be higher in sheep with a BCS ≥ 4.5 at mating time (P<0.01). The middle rump width was significantly affected by the BCS (P<0.001). In this study, the lowest and highest gestational lengths were found to be 148.90 and 151.41 d respectively. The gestational length in sheep was not found to be affected by age, the BCS, body measurements, sex or birth type (P>0.05); however, it was observed that the gestational lengths for male offspring and single offspring (non-multiple births) were longer. In addition, it was detected that the gestational length was different in sheep with a BCS ≥ 4.5. The time spent in the womb is important with respect to obtaining a healthy lamb. For profitable production, a BCS of between 2.5 and 4 is recommended in sheep. It is thought that the use of body condition scoring, which is easy information for the breeder to utilize, will have a positive effect on determining the bodily reserves of sheep and the reproductive efficiency as well as on obtaining a healthy lamb. More studies on the gestational length in sheep are required.

scholarly journals Association between body condition score and live weight in pasture-based Holstein-Friesian dairy cows

2006 ◽  
Vol 73 (4) ◽  
pp. 487-491 ◽  
Author(s):  
Donagh P Berry ◽  
Kevin A Macdonald ◽  
John W Penno ◽  
John R Roche
Keyword(s):  
Body Condition ◽  
Body Condition Score ◽  
Live Weight ◽  
Calving Interval ◽  
Regression Analyses ◽  
Holstein Friesian ◽  
Condition Score ◽  
The Mean ◽  
Degree Of Association ◽  
The Relationship

The objective was to quantify the strength of the relationship between body condition score (BCS) and live weight (LW) in pasture-based Holstein-Friesian dairy cattle, and to determine the kg LW per unit BCS. A total of 26021 test-day records with information on both BCS (1–10 scale, where 1 is emaciated and 10 is obese) and LW across 1110 lactations from one research farm were used in the analysis. Correlation and regression analyses were used to determine the degree of association between BCS and LW in different parities, stages of the inter-calving interval and years. Correlations between BCS and LW were relatively consistent, with the mean correlation between BCS and LW across all data of 0·55 implying that differences in BCS explain approximately 30% of the variation in LW. Significantly different regressions of LW on BCS were present within stage of inter-calving interval by parity subclasses. Excluding calving, LW per unit BCS varied from 17 kg (early to mid lactation in parity 1) to 36 kg (early lactation in parity 4 and 5). However, LW per unit BCS was greatest at calving varying from 44 kg in first parity animals to 62 kg in second parity animals. On average, 1 BCS unit equated to 31 kg LW across all data.

scholarly journals Live weight, Body condition score, body dimensions, and phenotypic correlations between them in sheep of Bulgarian dairy synthetic population

2021 ◽  
Vol 13 (Volume 13, Issue 2) ◽  
pp. 141-146
Author(s):  
P. Slavova ◽  
N. Dimova ◽  
M. Mihaylova ◽  
S. Slavova ◽  
S. Laleva ◽  
...  
Keyword(s):  
Body Condition ◽  
Body Condition Score ◽  
Live Weight ◽  
Young Female ◽  
The Body ◽  
Body Volume ◽  
Body Dimensions ◽  
Phenotypic Correlations ◽  
Synthetic Population ◽  
Condition Score

Abstract: The aim of the present study was to establish live weight, Body condition score (BCS), body dimensions and phenotypic correlations between them in young female breeding animals of Bulgarian dairy synthetic population (BDSP). The object of research were 137 ewe lambs of the flock, bred at the Agricultural Institute in Stara Zagora for a period of 3 years. Live weight of animals and body dimensions were performed at 6, 9 and 18 months of age and Body condition score was assessed. In addition, the phenotypic dependences between indicators were calculated. The data were processed with Statistica software product. Based on the obtained results, it could be summarized that the live weight and bone system of the animals increased more intensively in the period from 6 to 9 months of age, which was accompanied by an increase in BCS. During the next period (after 9 months of age) there was a certain slowdown in the growth rate and a decrease in BCS, but an increase in live weight. The values of the two indicators at the age of 18 months however showed that the physiological condition of the animals was suitable for their inclusion in the breeding process. The highest values of phenotypic correlations were found between live weight, BCS and body dimensions at 6 months of age. At the next two ages (9 and 18 months), these dependencies declined. Live weight, body length, chest depth and croup width maintained a high level of correlation with the body volume. The highest phenotypic correlations between BCS and other indicators were established in animals at 6 months and the lowest ones at 9 months of age

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