scholarly journals Anthelmintic usage on the Reproductive Parameters in Captive reared Agoutis (Dasyprocta leporina) in Trinidad and Tobago, West Indies

2023 ◽  
Vol 83 ◽  
Author(s):  
Kegan Romelle Jones ◽  
Gary Wayne Garcia
Keyword(s):  
Birth Weight ◽  
Trinidad And Tobago ◽  
Litter Size ◽  
Control Group ◽  
Tropical Region ◽  
Reproductive Parameters ◽  
Treatment Groups ◽  
Litter Weight ◽  
In Captivity ◽  
And Gender

Abstract The agouti (Dasyprocta leporina) is a rodent that is found in the Neo-tropical region. This animal is hunted for its meat but has recently been reared in captivity as a source of meat protein in rural communities. A 20-month experiment was carried out to evaluate the effect of an anthelmintic on the reproductive performance of the agouti (Dasyprocta leporina) reared in captivity. This experiment was conducted in the humid tropics of Trinidad and Tobago. Sixteen animals (15 females, 1 male) placed in each of the two treatment groups in a completely randomized study design. In treatment 1 (T1) animals were given subcutaneous injections of Endovet Ces® (Ivermectin/Praziquantel) at 0.2 mg/kg every three months. Treatment 2 (T2) was the negative control group where animals were not exposed to an anthelmintic. Reproductive data were collected at parturition which included birth weight, litter weight, litter size and gender of offspring. The results showed that there was no statistical difference (p > 0.05) between the treatment groups with respect to birth weight, litter weight, litter size and gender. However, agoutis that were dewormed had a higher birth weight (220.24 g vs 209.1 g) and litter weight (369.8 g vs 343 g). The same values were obtained for the litter size (1.7 vs 1.7) and animals that were dewormed had a higher female offspring to male offspring (2.41:1 vs 1.11:1). This experiment demonstrated that the use of an anthelmintic strategically in the management of captive reared agoutis had no statistical effect (p > 0.05) on the reproductive parameters. Therefore, these animals can be kept in captive conditions without being dewormed and produce efficiently with proper feeding and housing management.

RESPONSE TO INJECTABLE SELENIUM AND VITAMIN E ON REPRODUCTIVE PERFORMANCE OF SOWS RECEIVING A STANDARD COMMERCIAL DIET

1986 ◽  
Vol 66 (4) ◽  
pp. 1065-1074 ◽  
Author(s):  
E. R. CHAVEZ ◽  
K. L. PATTON
Keyword(s):  
Vitamin E ◽  
Vitamin A ◽  
Litter Size ◽  
Reproductive Performance ◽  
Alpha Tocopherol ◽  
Control Group ◽  
Lactation Period ◽  
Treatment Groups ◽  
Litter Weight ◽  
Significant Difference

Thirty-one purebred Landrace sows were allocated to one of three experimental groups to determine the nutritional significance of parenteral injection of 3 mg selenium (Se) plus 408 IU of vitamin E as d-alpha-tocopherol. The three treatment groups consisted of (1) a control (no injection); (2) supplementation at 30, 60 and 100 d of gestation; and (3) supplementation at weaning of previous litter or approximately 1 wk prior to artificial insemination (AI) and at 30, 60 and 100 d of gestation. All sows were fed 2.5 kg d−1 (0.1 ppm Se and 15 IU vitamin E kg−1 diet) during gestation and ad libitum during a lactation period of 3 wk. Treatment did not affect (P > 0.05) weight changes of sows. The blood Se and vitamin A levels were not affected by treatment. Plasma glutathione peroxidase (GSH-Px) activity was kept within a narrow range except at 100 d of gestation when activity was significantly different for treatment 2 versus the control. Vitamin E levels of plasma were significantly (P < 0.05) lower for the control at 60 and 100 d gestation. The Se, vitamin A and vitamin E content of colostrum and milk were not affected by treatment except for treatment 2 having a higher colostrum Se level than the control. In all treatment groups the Se content was significantly greater in the colostrum than in the milk. Litter size, total litter weight at birth and litter size at weaning were significantly greater (P < 0.05) when Se and vitamin E were supplemented. Although overall litter weight at weaning was not significantly different, litters from parity groups 2 of treatments 2 and 3 were significantly heavier at weaning than the control litters. Mortality was lower (P < 0.05) for the supplemented treatments at birth versus the control (1.7% and 3.8% vs. 9.6%). No significant difference was observed from birth to weaning (20.0% and 17.4% and 15.3%). Although the Se, vitamin A and vitamin E contents of the blood from piglets were not significantly different among treatments, GSH-Px activity in the plasma from piglets in the control group was significantly lower (P < 0.05) than from piglets from sows receiving treatment 3. Key words: Selenium, vitamin E, supplementation, sows, reproductive performance

scholarly journals REPRODUCTIVE AND BODY WEIGHT PERFORMANCE OF THE NEW ZEALAND WHITE RABBITS IN THE HUMID TROPICS OF NIGERIA.

2021 ◽  
Vol 18 ◽  
pp. 61-65
Author(s):  
I. K. ODUBOTE ◽  
J. O. AKINOKUN
Keyword(s):  
New Zealand ◽  
Birth Weight ◽  
Litter Size ◽  
Gestation Length ◽  
Reproductive Parameters ◽  
Average Birth Weight ◽  
Litter Weight ◽  
New Zealand White Rabbits ◽  
White Breed ◽  
Size At Birth

Fifty two litters obtained over a period of 8 months (December 1986-July 1987) from the mating of eight bucks with twenty nine does (first mating) and twenty three does (second mating) all belonging to the New Zealand White breed of rabbits were used in this analysis. Mean gestation length, number of mating to conception, litter size at birth and parturition interval were 31.6 ± 0.2 days, 1.4 ± 0.1, 5.6 ± 0.3 pups and 79.0 ± 14.5 days respectively. Litter weight at birth, 3,6 and 8 weeks of age were 230.4 ± 9.5g, 602.1 ± 35.6g, 1247.5 ± 81.5g and 1673.0 ± 112.3g respectively. Parity significantly (P <0.05) affected the number of mating to conception and litter birth weight. Litter weight at all ages were influenced (P<.01) by corresponding litter sizes at such ages. Sire neither had any effect on litter weight at all ages nor on any of the reproductive parameters studied. Litter size at birth was negatively correlation with gestation length (-0.08), number of matings to conception (-0.27) and average birth weight (-0.42). 

scholarly journals Effects of attapulgite dietary supplementation on sow performance in two commercial farms in Greece

2018 ◽  
Vol 68 (2) ◽  
pp. 193 ◽  
Author(s):  
V. KANOULAS ◽  
G. A. PAPADOPOULOS ◽  
G. ARSENOS ◽  
E. D. TZIKA ◽  
P. FORTOMARIS
Keyword(s):  
Litter Size ◽  
Repeated Measures ◽  
Average Daily Gain ◽  
Body Weight Loss ◽  
Control Group ◽  
Treatment Groups ◽  
Performance Indexes ◽  
Commercial Farms ◽  
Underlying Mechanisms ◽  
Reproductive Phases

The present study investigated the effects of attapulgite supplementation in sow diets during gestation and lactation on sow performance. The study comprised two reproductive phases (cycles) in two commercial farrow to finish farms: Farm A (capacity: 550 sows) and Farm B (capacity: 220 sows). The treatment groups were: a) control group (CN): the sows were fed a common gestation or lactation diet; b) attapulgite group (AT): the sows were fed the CN diet supplemented with attapulgite at 0,7% level; c) attapulgite plus group (AT+): the sows were fed the CN diet supplemented with attapulgite (0.7%) and a mix of enzymes, live yeast and amino acids (0.1%), at a total of 0.8% level. Within each cycle the sows included per treatment were: 24 for Farm A; 12 for Farm B. Initially data were analyzed per cycle and per each farm. Data from sows that completed both cycles within each farm, were analyzed by repeated measures analysis. Regarding sow parameters, sow body weight loss during lactation tended to be greater in AT sows compared to CN sows during cycle 1 in Farm B and was greater in AT and AT+ than CN sows in Farm A that completed both cycles (P=0.063 and P=0.023, respectively). A greater litter size 24h postpartum was observed in favour of AT compared to CN group during cycle 1 in Farm A and in sows that completed both cycles in Farm A (P=0.001 and P= 0.011, respectively). Litter size at weaning was greater in sows from the AT group than CN during cycle 1 and 2 in Farm A, in cycle 1 in Farm B and in sows that completed both cycles in Farm A (P=0.004, P=0.037, P=0.037, and P=0.022, respectively). Piglet weight at weaning and average daily gain during lactation were greater in AT group than CN and AT+ in sows that completed both cycles in Farm A (P=0.049 and P=0.040 respectively). Notable similar effects, although not statistically significant, were also observed in Farm B. This field study suggests that attapulgite supplementation in sow diets can improve performance indexes. Further research should investigate the underlying mechanisms involved.

Comparative farrowing to weaning performance in Meishan and Large White pigs and their crosses

1995 ◽  
Vol 60 (2) ◽  
pp. 269-280 ◽  
Author(s):  
G. J. Lee ◽  
C. S. Haley
Keyword(s):  
Birth Weight ◽  
Standard Deviation ◽  
Litter Size ◽  
Large White ◽  
Weaning Weight ◽  
Growth And Survival ◽  
Probability Of Survival ◽  
Litter Weight ◽  
Litter Traits ◽  
Breed Differences

AbstractGrowth and survival from birth to weaning were monitored during three generations of crossbreeding between British Large White (LW) and Chinese Meishan (MS) pigs. The design allowed comparisons between sow genotypes ranging from zero to all MS genes, which were mated toLWor MS boars, to produce progeny with proportions of 0·0 to 0·5 or 0·5 to 1·0 MS genes, respectively. Crossbreeding parameters of both maternal and direct piglet performance were estimated for the first two parities using restricted maximum likelihood (REML) methods for litter traits (litter weight at birth, litter mean and within litter standard deviation of piglet weight at birth, proportion surviving to weaning, litter size and weight at weaning and litter mean piglet weight at weaning) and for traits of the piglet (birth weight, probability of survival and weaning weight). For litter traits, the estimated contribution of the additive maternal effect to the breed differences (MS-LW) was significant for litter mean piglet birth weight (–0·46 (s.e. 0·04) kg), survival to weaning (0·15 (s.e. 0·02)), litter size at weaning (1·6 (s.e. 0·16) piglets), litter weaning weight (–11·2 (s.e. 3·8) kg) and litter mean piglet weaning weight (2·54 (s.e. 0·24) kg). Adding litter size and litter mean piglet birth weight to the model removed the additive maternal contribution to the breed differences in survival, and litter size and reduced that for litter mean piglet weaning weight. The contribution of the direct additive effect to the breed difference (MS-LW) was significant for the within litter standard deviation in birth weight (0·018 (s.e. 0·006)), survival to weaning (0·12 (s.e. 0·02)) and litter size (1·12 (s.e. 0·64)) and weight (11·6 (s.e. 4·0) kg) at weaning, but not for piglet weight at birth or weaning. Fitting litter size and litter mean birth weight had comparatively little impact on the direct additive effects. There were significant maternal heterosis effects for litter weight at birth and litter size and weight at weaning, the estimated deviation of the F1 from the midpoint of the two purebreds 3·22 (s.e. 0·55) kg, 2·20 (s.e. 0·47) piglets, and 20·1 (s.e. 3·3) kg respectively, but none for survival or piglet weights. There were direct heterosis effects for litter weight and litter mean piglet weights, the estimated deviation of the Fjfrom the mid point of the two purebreds being 1·16 (s.e. 0·41) kg and 0·14 (s.e. 0·02) kg, for survival to weaning (0·04 (s.e. 0·02)) and for litter weight (11·2 (s.e. 2·5) kg) and litter mean piglet weight (0·96 (s.e. 0·17) kg) at weaning. Fitting litter size and litter mean piglet birth weight removed or reduced both maternal and direct heterosis effects. Individual piglet analyses gave similar results to analyses of the equivalent sow trait. It was concluded that in litters born to MS cows, the lower piglet survival and lower weaning weights were related to the larger litter sizes and lower piglet birth weights. For their birth weight, however, MS piglets have a greater ability to survive and thrive. The large direct and maternal heterosis effects observed for litter and mean piglet weight at weaning werepartly associated with the heavier birth weight of the crossbred piglet.

Genetic relationships between seasonal tissue levels in Scottish Blackface ewes and lamb growth traits

2005 ◽  
Vol 81 (1) ◽  
pp. 11-21 ◽  
Author(s):  
N. R. Lambe ◽  
S. Brotherstone ◽  
M. J. Young ◽  
J. Conington ◽  
G. Simm
Keyword(s):  
Weight Gain ◽  
Birth Weight ◽  
Litter Size ◽  
Growth Traits ◽  
Genetic Relationships ◽  
Genetic Correlations ◽  
Muscle Weight ◽  
Litter Weight ◽  
Weight Gains ◽  
Lamb Growth

AbstractScottish Blackface ewes (no. = 308) were scanned four times per year using X-ray computed tomography (CT scanning) (pre-mating, pre-lambing, mid lactation and weaning), from 18 months to 5 years of age, giving a maximum of 16 scanning events per ewe. Total weights of carcass fat, internal fat and carcass muscle were estimated from the CT images at each scanning event. Lambs produced by these ewes were weighed at birth, mid lactation and weaning to calculate litter growth traits: litter birth weight; litter weight gain from birth until mid lactation; and litter weight gain from birth until weaning. Genetic (rg) and phenotypic (rp) correlations were estimated between ewe CT tissue traits and litter growth traits. Correlations between ewe CT tissue traits and litter size (LS) were also estimated. Ewe CT tissue traits were either unadjusted or adjusted for total soft tissue weight (sum of weights of carcass fat, internal fat and carcass muscle) to investigate relationships with either absolute tissue weights of carcass fat (CFWT), internal fat (IFWT), and carcass muscle (CMWT), or relative proportions of carcass fat (CFP), internal fat (IFP), and carcass muscle (CMP). Litter growth traits were either unadjusted or adjusted for litter size, to investigate relationships with total lamb burden (total litter birth weight (TBW), total litter weight gain from birth until mid lactation (TWGM), total litter weight gain from birth until weaning (TWGW)) or average lamb performance (average lamb birth weight (ABW), average lamb weight gain from birth until mid lactation (AWGM), average lamb weight gain from birth until weaning (AWGW)).Moderate to large positive genetic correlations were estimated between absolute weights of all three ewe tissues (CFWT, IFWT, CMWT), or muscle proportion (CMP), and litter size (LS). Significant positive genetic correlations were also estimated between weight (CMWT) or proportion (CMP) of muscle carried by the ewe pre-mating and total birth weight (TBW) and weight gains (TWGM, TWGW) of her litter, largely due to the associated increase in litter size. Muscle proportion (CMP) was not significantly correlated to average lamb weights or weight gains (ABW, AWGM, AWGW). Pre-lambing carcass fat weight (CFWT) and proportion (CFP) in the ewe showed positive genetic correlations with average lamb weights and weight gains (ABW, AWGM, AWGW), whereas, after lambing, CFP was negatively correlated with these lamb traits. Internal fat weight (IFWT) pre-mating showed positive genetic correlations with all litter growth traits (TBW, TWGM, TWGW, ABW, AWGM, AWGW). Average lamb growth traits were negatively correlated with pre-lambing internal fat proportion (IFP), but positively correlated to IFP at mid lactation and weaning.Correlations were also estimated between each pair of CT traits. Total internal fat weight and total carcass fat weight were very highly correlated (rp= 0·75,rg= 0·96). Correlations with total carcass muscle weight were smaller and positive for both carcass fat weight (rp= 0·48,rg= 0·12) and internal fat weight (rp= 0·42,rg= 0·20).The results suggest that selection for increased carcass muscle weight or proportion in a Scottish Blackface hill flock would have a positive effect on total weights of litters reared, but that selection against carcass fat weight or proportion in a breeding programme for Blackface sheep may have an impact on the maternal ability of the ewe. However, maintaining fat in internal depots may reduce the depletion of carcass fat during pregnancy, allowing this depot to provide energy for lactation, and may have a positive impact on lamb growth.

Reproductive attributes of local pig (Votho) of Nagaland, India

2016 ◽  
Author(s):  
N. Savino ◽  
Z. Chusi ◽  
A. Dhali ◽  
P. Perumal
Keyword(s):  
Mortality Rate ◽  
Litter Size ◽  
Field Survey ◽  
Gestation Length ◽  
Reproductive Parameters ◽  
Litter Weight ◽  
Significant Difference ◽  
Size At Birth ◽  
Selection Of ◽  
Age At First Farrowing

The present study was conducted to measure the reproductive attributes of Naga local pigs (Votho) in Kohima, Peren and Phek district of Nagaland. The reproductive parameters were measured through field survey and reproductive records of owner. The reproductive parameters such as age at first fertile service (AFFS), age at first farrowing (AFF), gestation length, farrowing interval, litter size at birth, litter size at weaning, litter weight at birth, litter weight at weaning, mortality rate and stillbirth rate were measured. The result revealed that there was a significant difference among the different districts of Nagaland in AFFS, AFF and litter weight at birth. Parameters such as AFFS, AFF and litter weight at birth were significantly higher and gestation length, farrowing interval, litter size at weaning, litter weight at birth, litter weight at weaning were non-significantly higher in Kohima than in Peren and Phek District. Similarly, parameters such as litter size at birth, mortality rate were non-significantly higher in Peren district and stillbirth was non- significantly higher in Phek district than other districts of Nagaland. These reproductive attributes analyses may be useful in selection of breeding stock for future parents and select the place for breeding programme for indigenous local Naga pigs.

The performance of Masham ewes

1979 ◽  
Vol 29 (1) ◽  
pp. 69-79 ◽  
Author(s):  
J. E. Newton ◽  
J. S. Fenlon
Keyword(s):  
Growth Rate ◽  
Birth Weight ◽  
Perinatal Mortality ◽  
Litter Size ◽  
High Birth Weight ◽  
Litter Weight ◽  
Lamb Growth

ABSTRACTThe performance of two flocks of crossbred Masham ewes (Tees-water × Dales Bred) was measured for 6 and 4 years respectively. The ewes in Flock 1 were mated with Dorset Down rams and the ewes in Flock 2 with Suffolk rams.The overall mean mating weight of each flock was 68-0 kg with no consistent year-to-year variation. The mating weight repeatability values for ewes entering the flocks as 2-year-olds were 0·532 (±0·0681) and 0·524 (±0·1118) for Flocks 1 and 2 respectively.Mean litter size increased with age, but repeatability was low. Over- all litter weights for singles, twins and triplets were 5·89, 9·88 and 12·43 kg respectively. Two-year-old ewes had lighter litters than mature ewes. Repeatability for litter weight in Flock 1 was 0·337 (±0·0755).Lamb growth rate to 4 weeks of age was lower for 2-year-old ewes in both flocks and the repeatability was 0·322 (±0·0947) in Flock 1. For ewes having twin lambs, significant correlations (P < 0·01) were found between mating weight and birth weight and between birth weight and lamb growth rate to 4 weeks of age.Perinatal mortality was higher for lambs with a birth weight below 3·9 kg, but overall lamb mortality was only 8%: this low figure was probably due to the relatively high birth weight of the twin and triplet lambs.

scholarly journals The Effect of Caffeine Treatment during Organogenesis Period on the Birth Weight of the Rat Fetuses (Rattus norvegicus)

2016 ◽  
Vol 1 (2) ◽  
Author(s):  
Hery Wijayanto ◽  
Tri Wahyu Pangestiningsih ◽  
Erdiansyah Rahmi
Keyword(s):  
Body Weight ◽  
Birth Weight ◽  
Rattus Norvegicus ◽  
Control Group ◽  
Pregnant Rats ◽  
Pregnant Rat ◽  
Treatment Groups ◽  
Caffeine Treatment ◽  
Group I ◽  
Fetal Birth Weight

The study was conducted to investigate the effects of caffeine treatment during organogenesis period to the fetal birth weight, using rat (Rattus norvegicus) as the animal model. Thirty-six primipararat obtained from Unit Pengembangan Hewan Percobaan, Gadjah Mada University (UPHP-GMU), 3 month old, 165-200 g body weight, were divided into 6 groups, consisted of 6 rats each. Six of the ratshave been selected based on the estrous cycles, and only rat with regular estrous were use for theexperiment. The rat then were mated, and during day 6-14 of the pregnancies were treated orally withcaffeine diluted in aquadest in dosage: placebo (1 cc aquadest) for group I (control), and 5.4, 10.8, 16.2,21.6, and 27 g/200 g body weight/day for treatment groups II-VI respectively. The pregnant rat bodyweights were determined at day 6 of pregnancies for calculating the caffeine treatment dosages. At day 20thof the pregnancies all of the pregnant rats were caesarotomized, and all of the fetuses were removed and weighed. The results showed that all of the treatment groups have significantly lower birth weightcompare to the groups control group. More over, fetal obtained from the treatment groups also showedserious subcutaneous hemorrhagic.Keywords: organogenesis, Rattus norvegicus, birth weight

Effect of Hemiovariectomy on reproductive performance in Chinchila Rabbits.

2021 ◽  
Vol 36 (1) ◽  
pp. 167-174
Author(s):  
C. A. Eze ◽  
C. P. Nwodo ◽  
E. O. Ogbu
Keyword(s):  
Birth Weight ◽  
Litter Size ◽  
Conception Rate ◽  
Control Group ◽  
Significant Difference ◽  
Negative Effect ◽  
Group A ◽  
Group B ◽  
The Right ◽  
Reproductive Indices

This work evaluates the effects of hemiovariectomi (37 some reproductive indices such as conception rate, birth weight and birth litter size in Chinchilla breed of rabbits. Thirty females and six males were used for the experiment. The males were examined for breeding soundness before using them to cross the females. The experiment was replicated in two batches of three groups of five females and a male each at different periods. Hemi-ovariectomy was carried out in the right ovary of 10 does (Group A) and left ovary of another 10 does (Group B). Ten females in Group C were not ovariectomised and served as the control group. All groups were served at reproductive maturity by rotating the bucks. Pregnancy was diagnosed using a standard method. The reproductive indices evaluated included conception rate, birth weight and birth litter size. Data were analyzed using percentages, ratios, and analysis of variance (ANOVA) was computed where necessary. Results showed that hemi ovariectomy significantly (P<0.01) reduced the mean litter size, Group A (2.50+58), Group B (3.00+0.71), control (Group C) (6.20+0.84). However, there was increased mean litter birth weight which, differed significantly (P<0.01) from that of the control (27.06), Group A (33.64+1.86) and Group B (33.93=1.75). Also, the conception rate in the treated groups averaged 65% while the control was 80%. There was no significant difference (P>0.05) between the groups in the interval from the introduction of the huck to the does to the time of conception. It is concluded thai hemiovariectomy has negative effect on the conception rate and birth litter size but has positive effect on birth litter weight. The procedure has shown that in highly priced breed of animal with unilateral ovarian uilments such an animal can still be used for breeding using the healthy ovary: The procedure could also be a more reliable method of birth control in pet animals as well as a means of producing heavy weight offspring.

Effect of feeding fermented extruded corn stover on reproductive performance of pregnant sows

2017 ◽  
Author(s):  
A. Ngalavu ◽  
H. Jiang ◽  
D. Che ◽  
R. Han ◽  
T. L. Tyasi
Keyword(s):  
Corn Stover ◽  
Litter Size ◽  
Reproductive Performance ◽  
Experimental Treatment ◽  
Late Pregnancy ◽  
Control Group ◽  
Treatment Groups ◽  
Serum Hormone ◽  
Fat Thickness ◽  
Performance Results

The objective of the study was to determine the effects of dietary supplementation of fermented extruded corn stover on back fat thickness, reproductive performance and serum hormone in sows during late pregnancy. A total of 48 pregnant sows (24 Landrace and 24 Yorkshire) were randomly assigned into four experimental treatment groups (0%, 10%, 15% and 20% fermented extruded corn stover). Back fat thickness results showed that no significant differences on control group compared to each fermented treatment groups (P>0.05) at 55 and 105 days of gestation, respectively. Reproductive performance results demonstrated that control group had a lower litter size per head than 10% fermented extruded corn stover group (P less than 0.05), respectively. The results showed that leptin hormone was higher in control group than 10%, 15% and 20% treatment groups (P less than 0.05), respectively. Our findings suggested that 10% fermented extruded corn stover increased the litter size per head in pregnant sows.

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