scholarly journals Understanding mammary activity in red-rumped agouti and implications for management and conservation of this Neotropical game species

2017 ◽  
Vol 78 (3) ◽  
pp. 540-547 ◽  
Author(s):  
M. D. Singh ◽  
S. Singh ◽  
G. W. Garcia
Keyword(s):  
Birth Weight ◽  
Litter Size ◽  
Maternal Nutrition ◽  
Evolutionary Strategy ◽  
Game Species ◽  
Average Birth Weight ◽  
Energy Demands ◽  
High Dependency ◽  
Chi Squared ◽  
The Relationship

Abstract The red-rumped agouti (Dasyprocta leporina) produces precocial young and is the most hunted and farmed game species in several Neotropical countries. An understanding of the reproductive biology, including the relationship between litter size and teat functionality is crucial for conservation management of this animal. In precocial mammals, as the red-rumped agouti, maintaining maternal contact to learn foraging patterns may be more important than the energy demands and nutritional constraints during lactation and suckling may not play important roles when compared to altricial mammals. Therefore, in this study we evaluated the relationship between mammary functionality with litter size, litter birth weight, and parturition number in captive red-rumped agouti. Functionality was assessed by manual palpation of teats from un-sedated females (N=43). We compared the average birth weight of all newborns, male newborns and female newborns among agoutis with different litter sizes and different parturitions by one way ANOVA’s, while Pearson’s Chi-squared tests were used to detect relationships between teat functionality, litter size, and parturition number. Parturition number had no effect on the mean birth weight of all young (F0.822, P > 0.05), male young (F0.80, P > 0.05) or female young (F0.66, P > 0.05) in the litters. We found (i) no significant correlations (P > 0.05) between teat functionality and litter size and (ii) no significant correlations (P > 0.05) between teat functionality and parturition number. This suggests that whilst all teat pairs were functional, functionality was a poor indicator of litter size; suggesting that female agouti young may not have a high dependency on maternal nutrition; an possible evolutionary strategy resulting in large wild populations; hence its popularity as a game species.

PREWEANING GROWTH OF YOUNG AND THE WEIGHT OF MAMMARY GLANDS OF MOTHER MICE

1969 ◽  
Vol 49 (3) ◽  
pp. 349-357 ◽  
Author(s):  
Jiro Nagai
Keyword(s):  
Birth Weight ◽  
Litter Size ◽  
Inbred Strains ◽  
Mammary Glands ◽  
Average Birth Weight ◽  
Inbred Strains Of Mice ◽  
Size Groups ◽  
The Difference ◽  
The Relationship ◽  
Average Body

A complete diallel using three inbred strains of mice (C3H/He, C57BL/6J and SWR/J) was made to examine preweaning growth of young, the weight of mammary glands of mothers and the relationship between them. Litter sizes were standardized to either six or eight at birth.The differences between strain-of-dam, strain-of-sire and litter size groups in average body weight of full sibs at 12 days were not significant. The difference between litter size groups in weight of dried-defatted mammary gland of mothers 12 days after delivery (DDMW) was significant. When average birth weight was fixed, the partial correlation between DDMW and 12-day weight, calculated within litter size and mating class, was +0.54. Heterosis in average birth weight and 12-day weight was observed. Relationships between preweaning growth criteria are discussed.

scholarly journals Factors affecting birth weight in sheep: maternal environment

Reproduction ◽  
2007 ◽  
Vol 133 (1) ◽  
pp. 297-307 ◽  
Author(s):  
D S Gardner ◽  
P J Buttery ◽  
Z Daniel ◽  
M E Symonds
Keyword(s):  
Birth Weight ◽  
Litter Size ◽  
Maternal Nutrition ◽  
Multilevel Modelling ◽  
Adult Health ◽  
Maternal Characteristics ◽  
Factors Affecting ◽  
Relationship Of ◽  
The Relationship ◽  
Practical Implications

Knowledge of factors affecting variation in birth weight is especially important given the relationship of birth weight to neonatal and adult health. The present study utilises two large contemporary datasets in sheep of differing breeds to explore factors that influence weight at term. For dataset one (Study 1;n=154 Blue-faced Leicester×Swaledale (Mule) and 87 Welsh Mountain ewes, 315 separate cases of birth weight), lamb birth weight as the outcome measure was related to maternal characteristics and individual energy intake of the ewe during specified periods of gestation, i.e. early (1–30 days; term ~147 days gestation), mid (31–80 days) or late (110–147 days) pregnancy. For dataset two (Study 2;n=856 Mule ewes and 5821 cases of birth weight), we investigated using multilevel modelling the influence of ewe weight, parity, barrenness, lamb sex, litter size, lamb mortality and year of birth on lamb birth weight. For a subset of these ewes (n=283), the effect of the ewes’ own birth weight was also examined. Interactions between combinations of variables were selectively investigated. Litter size, as expected, had the single greatest influence on birth weight with other significant effects being year of birth, maternal birth weight, maternal nutrition, sex of the lamb, ewe barrenness and maternal body composition at mating. The results of the present study have practical implications not only for sheep husbandry but also for the increased knowledge of factors that significantly influence variation in birth weight; as birth weight itself has become a significant predictor of later health outcomes.

scholarly journals PRESTASI BERANAK TERNAK BABI YANG MENGGUNAKAN HORMON PMSG DAN hCG PADA PETERNAKAN KOMERSIAL DI KELURAHAN KAYAWU

ZOOTEC ◽  
2013 ◽  
Vol 33 (1) ◽  
pp. 58
Author(s):  
Tery Wenda ◽  
Frans A. Kairupan ◽  
Petrus R. R. I. Montong ◽  
Sjaloom E. Sakul ◽  
Mien Th. R. Lapian
Keyword(s):  
Birth Weight ◽  
Litter Size ◽  
Chorionic Gonadotropin ◽  
Human Chorionic Gonadotropin ◽  
Follicle Stimulating Hormone ◽  
The Body ◽  
Average Birth Weight ◽  
Randomized Design ◽  
Serum Gonadotropin ◽  
Stimulating Hormone

ABSTRAKSuperovulasi merupakan salah satu upaya untuk meningkatkan derajat ovulasi dengan penyuntikan hormon gonadotropin pada tubuh hewan betina. Pada umumnya hewan donor disuntik dengan preparat follicle stimulating hormone (FSH) danPregnant mare's serum gonadotropin(PMSG) atau kombinasi (Pregnant mare's serum gonadotropin) dan human chorionic gonadotropin (hCG).Tujuan Penelitian iniadalah untuk mengetahui sejauh mana prestasi beranak babi dara (calon induk) dengan menggunakan hormon pregnant mare's serum gonadropin (PMSG) dan human Chorionic Gonadotropin (hCG).Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) terdiri atas dua perlakuan (menggunakan dan tanpa menggunakan hormon PMSG dan hCG) dengan masing-masing 21 ulangan. Semua data dianalisa dengan analisis sidik ragam (ANOVA) Steel dan Torrie (1993).Variabel yang diamati untuk adalah litter size, berat lahir anak babi yang dilahirkan dan mortalitas anak babi yang lahir sampai disapih. Hasil penelitian menunjukkan bahwa jumlah anak babi yang lahir hidup dalam satu kelahiran ada perbedaan sangat nyata bahwa yang lahir dari induk Superovulasi dibandingkan dengan induk yang tidak disuperovulasikan, rata-rata 9.19-6.66 ekor. Dan juga berat lahir rata-rata 1.53-1.40 kg Demikian juga mortalitas anak rata-rata 14.36-29.19%. Hasil penelitian menunjukkan bahwa penggunakan hormon PMSG dan hCG dapat memperbaiki litter size lahir, bobot lahir, dan menekan persentase mortalitas ternak babi. Kata Kunci:Potensi beranak babi dara,hormon PMSG dan hCG, Babi betina bunting.ABSTRACTTHE ACHIEVEMENT PIGS BEAR LIVESTOCK USING PMSG AND hCG HORMONE ON RANCH IN THE VILLAGE COMMERCIAL KAYAWU. Superovulation is an effort to increase the degree of ovulation by injection of gonadotropin hormones in the body of a female animal. In general, animal donors were injected with preparations of follicle stimulating hormone (FSH) and Pregnant mare's serum gonadotropin (PMSG) or a combination (Pregnant mare's serum gonadotropin) and human chorionic gonadotropin (hCG). The objective of this research was to determine the extent of achievement farrow dara (prospective parent) using pregnant mare's serum hormone gonadropin (PMSG) and human chorionic gonadotropin (hCG). The research using completely randomized design (CRD) consisting of two treatments (using and without using PMSG and hCG hormone) with 21 replications each. All data were analyzed with analysis of variance (ANOVA) Steel and Torrie (1993). Variables was observed for litter size, birth weight piglets born and piglets born mortality until weaning. The results showed that the number of piglets born alive in the birth there is a very real difference that is born of a parent superovulation compared with the parent who does not to superovulated on average 9.19–6.66 tail. And also the average birth weight 1:53 to 1:40 kilograms likewise the average child mortality 14.36–29.19%. From the results of the study concluded that the use of PMSG and hCG hormone can improve birth litter size, birth weight and reduce the percentage of mortality of pigs. Keywords: Extent of achievement of gilt,PMSG dan hCG hormone, and Pregnant mare.

scholarly journals Multiple-trait structured antedependence model to study the relationship between litter size and birth weight in pigs and rabbits

2017 ◽  
Vol 49 (1) ◽  
Author(s):  
Ingrid David ◽  
Hervé Garreau ◽  
Elodie Balmisse ◽  
Yvon Billon ◽  
Laurianne Canario
Keyword(s):  
Birth Weight ◽  
Litter Size ◽  
Multiple Trait ◽  
The Relationship

scholarly journals Methylenetetrahydrofolate reductase (MTHFR) C677T, A1298C and G1793A genotypes, and the relationship between maternal folate intake, tibia lead and infant size at birth

2009 ◽  
Vol 102 (6) ◽  
pp. 907-914 ◽  
Author(s):  
Katarzyna Kordas ◽  
Adrienne S. Ettinger ◽  
Héctor Lamadrid-Figueroa ◽  
Martha M. Tellez-Rojo ◽  
Mauricio Hérnandez-Avila ◽  
...  
Keyword(s):  
Birth Weight ◽  
Methylenetetrahydrofolate Reductase ◽  
Maternal Nutrition ◽  
Explanatory Models ◽  
Folate Intake ◽  
Birth Size ◽  
Term Infants ◽  
Pb Exposure ◽  
The Relationship ◽  
Size At Birth

Small size at birth continues to be a problem worldwide and many factors, including reduced folate intake and Pb exposure, are associated with it. However, single factors rarely explain the variability in birth weight, suggesting a need for more complex explanatory models. We investigated environment–gene interactions to understand whether folate intake and maternal Pb exposure were associated with smaller newborn size in 474 women with uncomplicated pregnancies delivering term infants in Mexico City. We examined if folate intake modified the negative effects of maternal Pb burden on birth size. We also asked if maternal and infant methylenetetrahydrofolate reductase (MTHFR) genotypes (C677T, A1298C and G1793A) modified the effects of folate intake or Pb exposure on birth size. Women were aged 24·6 (sd 5·1) years; 43·5 % were primiparous. Maternal blood Pb at delivery was 86 (sd 42) μg/l, with 26·7 % having levels ≥ 100 μg/l. Tibia Pb level was 9·9 (sd 9·8) μg/g. Of the women, 35·3 % had folate intakes < 400 μg/d. Birth weight was 3170 (sd 422) g. In covariate-adjusted regressions, higher folate intake was associated with higher birth weight (β 0·04; P < 0·05). Higher bone Pb was associated with lower birth weight (β − 4·9; P < 0·05). Folate intake did not modify the effects of Pb on birth size, nor did MTHFR modify the association between Pb or folate intake on birth size. Although modest, the relationship between maternal nutrition, Pb burden and birth size does underscore the importance of environmental exposures to child health because patterns of fetal growth may affect health outcomes well into adulthood.

Maternal starvation and progesterone secretion, litter size, and growth in the pig.

1979 ◽  
Vol 237 (3) ◽  
pp. E273
Author(s):  
D L Hard ◽  
L L Anderson
Keyword(s):  
Birth Weight ◽  
Litter Size ◽  
Maternal Nutrition ◽  
Fetal Loss ◽  
Late Gestation ◽  
Nutrient Deprivation ◽  
Fetal Survival ◽  
Progesterone Secretion ◽  
Full Diet ◽  
Neonatal Growth

The relationships of maternal nutrition and progesterone secretion to prenatal fetal loss and neonatal survival and growth were investigated in domesticated pigs that normally experience 40% fetal loss. Yorkshire pigs were subjected to prolonged starvation (40 days; 0 kcal/day; water only) in either the middle third or last third of pregnancy and then gradually realimented to a full diet and allowed to advance to parturition; controls received a full diet (7,028 kcal/day) throughout gestation. Pregnancies were maintained in 74% of the pigs starved during either middle or late gestation compared to 100% in controls. In dams starved from days 30--70, progesterone levels remained similar to controls, but were maintained at lower levels during realimentation between days 72 and 99. Progesterone levels in dams starved days 50--90 and controls were similar from days 50 to 130. At parturition, litter size in starved dams (9.4) was similar to full-diet controls (8.0) although birth weight and neonatal growth of piglets were reduced markedly from dams starved in middle or late pregnancy. These results indicate that severe maternal nutrient deprivation during the middle or last third of gestation has little effect on ovarian progesterone secretion and is not a major limitation to fetal survival in this litter-bearing species. Maternal nutrient deprivation imposes a significant detrimental effect, however, on birth weight and neonatal growth to 80 days of age.

scholarly journals A study on correlation between laterality of placenta on mid trimester ultrasonography and perinatal outcome

2019 ◽  
Vol 9 (1) ◽  
pp. 200
Author(s):  
Avik Ghosh ◽  
Mrinalkanti Ghosh
Keyword(s):  
Birth Weight ◽  
Observational Study ◽  
Pregnant Women ◽  
Perinatal Outcome ◽  
Prospective Observational Study ◽  
West Bengal ◽  
Average Birth Weight ◽  
Medical College ◽  
Antenatal Clinics ◽  
The Relationship

Background: Fetus is dependent on placenta for supply of nutrients from mother. Objective of this study was to assess the relationship between laterality of placenta by mid-trimester ultrasonography and perinatal outcome.Methods: It was a prospective observational study conducted between June 2016 to June 2017 at Burdwan Medical College, West Bengal. Participants were uncomplicated pregnant women having 18-24 weeks gestation attending antenatal clinics and admitted in ward who underwent obstetric sonography including placental localization. Women were observed till delivery. Analysis was done for site of implantation of placenta and its correlation with perinatal outcome.Results: Total of 300 women considered for the study, 195/300 (65%) had central implantation of placenta and 105/300 (35%) had lateral type of placentation. There were 4 IUFDs (1.33%); 2 (1.03) with central placenta and 2 (1.9) with lateral placenta. Among 31 (10.33%) IUGR babies 13 (6.67%) were associated with central and 18 (17.14%) with lateral placenta. Among 27 LBW babies 16 (8.21%) were related to central placenta and 11 (10.48%) were related to lateral placenta. Among 57 SNCU admissions 26 (13.33%) were related to central placenta and 31 (29.52%) were related to lateral placenta. Average birth-weight is 2.6±0.31 kg and 2.51±0.26 kg, respectively for central and lateral placenta.Conclusions: Laterally located placenta is associated with relatively poor perinatal outcome compared to central placenta with increased rates of IUGR, IUFD and LBW babies.

scholarly journals Productive and reproductive performance of Saanen goat at AZZahra farm of Sandakan in Malaysia

2018 ◽  
Vol 47 (1) ◽  
pp. 1-12 ◽  
Author(s):  
MAMY Khandoker ◽  
N Afini ◽  
A Azwan
Keyword(s):  
Body Weight ◽  
Birth Weight ◽  
Litter Size ◽  
Reproductive Performance ◽  
Dairy Goat ◽  
Gestation Length ◽  
Estrus Cycle ◽  
Average Birth Weight ◽  
Saanen Goat ◽  
Age At Puberty

An experiment was conducted at AZ-Zahra Farm, Sandakan, Sabah, Malaysia to investigate the productive and reproductive performance of Saanen dairy goat. Body weight at different ages were collected once while birth weight was collected when does gave birth. On the other hand, milk production of each individual per day was received continuously for three months. The data on reproductive parameters such as length of estrus cycle, duration of estrus period, age at puberty, gestation length, age at first kidding, litter size, birth weight and kid mortality were noted. Descriptive statistics such as number, percentage, mean, standard deviation were performed. T-test was also conducted to know the statistical difference between the groups. Result demonstrated that body weight increases significantly (p<0.01) with the advancement of the age. The highest daily milk yield was found in 2-3 years of age. Dam with multiple kids produced more milk than dam with single kid. Estrus cycle of Saanen goats was found 21 days, the average estrus period duration was 2.75 days, age at puberty was 8.33 months, first kidding age was 14.2 months and gestation period was 150 days on an average. With the increase of the age of dam litter size increased. Meanwhile average birth weight increased as age of dam increased from 2.85 kg in 1 year to 3.26 kg in 3 years. Male kids born heavier than females (3.23±0.62 vs. 2.75±0.58 kg) and single kids were heavier than twin kids (3.07±0.66 kgvs2.70±0.28 kg). Low mortality rate of kids was recorded in this study (6.4%). It can be concluded that the overall productive and reproductive performances of Saanen goat at AZ-Zahra farm were within the acceptable level and the variation recorded in different parameters is very much usual. Bang. J. Anim. Sci. 2018. 47 (1): 1-12

Growth, food consumption and litter production of female pigs mated at puberty and at low body weights

1973 ◽  
Vol 17 (1) ◽  
pp. 85-91 ◽  
Author(s):  
M. G. Pay ◽  
T. E. Davies
Keyword(s):  
Birth Weight ◽  
Food Consumption ◽  
Litter Size ◽  
Live Weight ◽  
Litter Production ◽  
Early Puberty ◽  
Average Birth Weight ◽  
The Third ◽  
Body Weights ◽  
Natural Service

SUMMARYGilts were allocated at 55 kg live weight to one of three treatments: 1. 1·4 kg of food daily to service, served at puberty, and 1·4 kg of food daily throughout pregnancy.2. 1·4 kg of food daily to service, served at the third heat, and 1·4 kg of food daily during pregnancy.3. 2·3 kg of food daily to service, served at the third heat, and 1·4 kg of food daily during pregnancy.An attempt was made to encourage early puberty by stimulation using the presence of a boar. Natural service with boars was used on all gilts.There were no significant differences between the treatments in time taken to reach puberty and the gilts were mated at 77, 97 and 116 kg live weight on Treatments 1, 2, and 3 respectively. The gilts on Treatment 1 had a significantly lower conception rate and a significantly smaller litter size than those on Treatments 2 and 3. However, the average birth weight did not vary significantly among treatments.

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