scholarly journals Oestrus synchronization efficiency in ewes and ram maturity effect on fertility during summer season

2020 ◽  
Vol 36 (4) ◽  
pp. 427-435
Author(s):  
Nevena Maksimovic ◽  
Dragana Ruzic-Muslic ◽  
Violeta Caro-Petrovic ◽  
Violeta Mandic ◽  
Marina Lazarevic ◽  
...  
Keyword(s):  
Body Weight ◽  
Birth Weight ◽  
Litter Size ◽  
Animal Husbandry ◽  
Summer Season ◽  
Gestation Length ◽  
Sheep Population ◽  
Sheep Farm ◽  
Maturity Effect ◽  
Lambing Rate

The purpose of this study was to investigate oestrus synchronization efficiency and ram maturity effect on fertility of ewes of MIS sheep population during summer season. Research was performed on the experimental sheep farm of the Institute for Animal Husbandry in Belgrade, Serbia. The study included 70 crossbred ewes of MIS sheep population (Pirot Pramenka, Merinolandschaf and Ile de France breed) and 3 Ile de France rams (2 young, sexually unexperienced rams and 1 mature ram). Oestrus was synchronized in all 70 ewes using progestagen impregnated vaginal sponges (30 mg fluorogestone acetate) in combination with 500 IU PMSG. Ewes were mated with rams 48 h later. Obtained fertility and productivity results were as follows: lambing rate 57.14% (40/70), gestation length 147.11, litter size 1.82, stillborn rate 15.07%, birth weight of lambs 4.29 kg and body weight of lambs at 30 days of age 13.07 kg on average. Based on the results obtained in this study it was concluded that presented oestrus synchronization and mating protocol yielded lower than expected lambing rate. The effect of ram maturity on lambing rate was significant (P<0.05), as ewes mated to mature ram had higher lambing rate compared to those mated to two young unexperienced rams. Mature ram also had bigger litter size and higher stillborn rate, as well as lower birth weight of lambs.

scholarly journals Niğde İlinde Yetiştirilen Akkaraman Irkı Koyunların Bazı Döl Verim Özellikleri ve Kuzuların Büyüme Performansı

2019 ◽  
Vol 7 (10) ◽  
pp. 1509
Author(s):  
Ayhan Ceyhan ◽  
Ahmet Şekeroğlu ◽  
Mustafa Duman
Keyword(s):  
Body Weight ◽  
Birth Weight ◽  
Growth Performance ◽  
Litter Size ◽  
Growth Characteristics ◽  
Improvement Project ◽  
Average Litter Size ◽  
Age And Sex ◽  
Birth Type ◽  
Lambing Rate

In this study, growth performance of Akkaraman lambs and some fertility parameters of Akkaraman sheep raised in semi extensive farm conditions were investigated. A total of 6300 heads Akkaraman ewes (6000 ewes and 300 rams) housed in 34 farms located in central villages of Niğde province were evaluated between 2012 and 2016. The data of birth weight of 30161 lambs, body weight of 29517 lambs aged 90 days old and some fertility parameters of 30000 heads ewes were used. The average lambing rate of ewes was found 90.1%. The twining rate of ewes was 20.8%; the average litter size was 1.12 lambs. Birth weights of Akkaraman sheep lambs was 4.23 kg, average 90th day live weights were 23.05 kg. Effects of year, birth type, dam age, and sex were found statistically significant on birth and 90-day live weights of the Akkaraman lambs. As a result, it was concluded that the fertility of Akkaraman sheep and growth characteristics of lambs raised by public under semi-extensive conditions could be improved and the economic situation of sheep farms could be better by the implementation such improvement project.

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

scholarly journals HUBUNGAN BOBOT LAHIR ANAK BABI DENGAN PERTAMBAHAN BOBOT BADAN, BOBOT SAPIH, MORTALITAS, DAN LITTER SIZE SAPIHAN PADA PETERNAKAN PT. KARYA PROSPEK SATWA

ZOOTEC ◽  
2020 ◽  
Vol 40 (1) ◽  
pp. 260
Author(s):  
Debora K.I. Bunok ◽  
M.Th.R. Lapian ◽  
V.R.W. Rawung ◽  
G.D.G. Rembet
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Birth Weight ◽  
Litter Size ◽  
Body Weight Gain ◽  
Animal Husbandry ◽  
Weaning Weight ◽  
Close Relationship ◽  
Relationship Of ◽  
The Relationship

RELATIONSHIP OF WEIGHT BIRTH PIGLET WITH ADDITION OF AGENCY WEIGHT, WEANING WEIGHT, MORTALITY, AND LITTER SIZE WEANING IN LIVESTOCK PT. KARYA PROSPEK SATWA. This study aims to determine how much the relationship of birth weight with weight gain, weaning weight, mortality, and litter size of weaning in animal husbandry companies owned by Animal Prospects. The material used is 7 pregnant sows from Yorkshire and Landrace, with an average body weight of 140 kg which will be taken by 54 children randomly. Furthermore, this research data obtained from weighing piglets during parturition, weighing weekly during weaning and weighing when weaned and taking data on live and dead piglets during the study. The data is then processed by procentage descriptive method and evaluated by simple correlation (r) and determination (R) tests. The variables measured in the study were body weight gain, weaning weight, mortality, and weaning litter size. Birth weight has a very close relationship with weight gain and weaning weight, but litter size weaning has a very weak relation. While mortality is not related. Key words: Piglets, Birth weight, Weight gain, Weaning weight, Mortality, Litter size weaning.

Effects of genetic and environmental factors on productive performances of Hilly Brown Bengal goat at Naikhongchari

2020 ◽  
Vol 26 (02) ◽  
pp. 2192-2203
Author(s):  
M. A. I. Talukder ◽  
M. M. Rahman ◽  
M. A. Alam ◽  
M. A. Hossain ◽  
M. A. Hemayet
Keyword(s):  
Body Weight ◽  
Birth Weight ◽  
Mortality Rate ◽  
Litter Size ◽  
Rainy Season ◽  
Body Weight Gain ◽  
Winter Season ◽  
Summer Season ◽  
Placental Weight ◽  
Litter Weight

The present experiment was studied to investigate the effect of genetic and non-genetic factors on productive performances of Hilly Brown Bengal (HBB) goats at the research farm. For this purpose, initially, a total of 69 does of different generations and 20 bucks and finally, a total of 76 does and 09 bucks were used to study productive parameters of HBB goat. The studied Animals were reared in a semi-intensive management system with natural breeding facilities. Goats were allowed to browse for 6-8 hours and mounting in hills with two times concentrates supplementation @ 1% of their body weight. Here three seasons, three generations were considered and parity was counted up to fifth. The data were statistically analyzed by using least-squares analyses of variance of the general linear model (GLM) procedure of the SPSS, 20.00. Sex of kids was significantly (p<0.05) affect the birth weight of kids, where male kids had higher birth weight (1.24 kg) than female kids (1.15 kg). Kids born in summer season had higher birth weight, litter weight, liter size, placental weight, kidding frequency, fortnightly body weight gain up to 6 months, pre and post-weaning gain with reduced mortality rate. Statistically, in summer season, approximately 11.22% and 3.45% heavier kids born, 9-10 g higher daily gain occurs in pre and post-weaning periods and 900-1100 g higher body weight at 3 months of age were found when compared with rainy and winter season respectively, where rainy season had highest body weight at 6 and 9 months of age. Highest percentage of total kidding (41.61%) was also found in summer season with reduced mortality rate (14%), while the highest mortality (64%) occurred in rainy season. Dams parity had significant (p<0.01) impact on production performances and kids mortality rate, where kids litter weight (1.60 to 2.35 kg), litter size (1.38 to 2.08) and placental weight (246.85 to 263.77 g) were increased linearly with the increment of parity up to four, while kids mortality were reduced from 36.57 to 8.44% with the increment of parity up to 5th. Results suggested that the trends of multiple births (twin and triplet) were increased with the advancement of parity, where twin and triplet kid composition increased linearly from 21 to 68% and 0 to 18% among the total kids born, respectively, while single kid percentage reduced from 79 to 14%. Best productive performances of goats were attained in 1st generation with its highest value of kids’ birth weight, weaning weight, litter weight and litter size. There had significant effect (p<0.01) of birth type on kids birth weight, body weight changes and placental weight, where single kid had 30.85% heavier birth weight than the quadruplet with highest placental weight (219.77 to 257.45 g), while highest dams post-partum weight losses (4.8 kg) occurred in triple kidded does. Reduced kid mortality from 36.56 to 1.76% and 51 to 18% can be obtained with the increment of kids’ birth weight and age, respectively.

An egg transfer study of litter size, birth weight and lamb survival

1974 ◽  
Vol 18 (3) ◽  
pp. 249-263 ◽  
Author(s):  
G. E. Bradford ◽  
C. S. Taylor ◽  
J. F. Quirke ◽  
R. Hart
Keyword(s):  
Body Weight ◽  
Birth Weight ◽  
Litter Size ◽  
Ovulation Rate ◽  
Gestation Length ◽  
Transfer Experiment ◽  
Embryo Survival ◽  
Average Litter Size ◽  
Breed Differences ◽  
Transfer Study

SUMMARYIn an egg-transfer experiment, seven breeds of sheep differing widely in mean mature ewe weight were used: Oxford Down, 96 kg; Borderm Leicester, 77; Finnish Landrace, 55; Southdown, 52; Tasmanian Merino, 42; Welsh Mountain, 34; and Soay, 22. Body weight and gestation length of recipient ewes are briefly examined. Of 60 recipient ewes, 95% became pregnant. Embryo survival averaged 69% and appeared to be independent of breed of embryo. Litter size of Welsh Mountain, Border Leicester and Finnish Landrace ewes each given four eggs averaged 2·6, 2·9 and 2·9 respectively so that most of the normally observed breed differences are mainly due to differences in ovulation rate. Observed birth weights were in general agreement with those predicted from litter size and donor and recipient ewe weights. The maternal capacity of Finnish ewes was close to average. Litter size affected survival mainly through its effect on birth weight. For Oxford lambs in litters of 3 to 5 from Finnish recipients, birth weight was 42% that of normal single-born Oxfords and only 42% survived. For Soays the corresponding values were 59% for birth weight and 85% for survival. Finnish lambs were exceptionally small at birth but had the highest viability of all breeds. Lamb mortality was higher for males (18%) than females (9%) especially in large litters (26 v. 11%) but about the same in both sexes for Finnish lambs.

scholarly journals The impact of maternal genetic merit and country of origin on ewe reproductive performance, lambing performance and ewe survival

2021 ◽  
Author(s):  
N Fetherstone ◽  
N McHugh ◽  
T M Boland ◽  
F M McGovern
Keyword(s):  
New Zealand ◽  
Birth Weight ◽  
Litter Size ◽  
Country Of Origin ◽  
Reproductive Traits ◽  
Gestation Length ◽  
Genetic Merit ◽  
Genetic Groups ◽  
One Year ◽  
The Impact

Abstract The objective of this study was to investigate the impact of the ewe’s maternal genetic merit and country of origin (New Zealand or Ireland) on ewe reproductive, lambing and productivity traits. The study was performed over a four year period (2016 to 2019) and consisted of three genetic groups: high maternal genetic merit New Zealand (NZ), high maternal genetic merit Irish (High Irish) and low maternal genetic merit Irish (Low Irish) ewes. Each group contained 30 Suffolk and 30 Texel ewes, selected based on the respective national maternal genetic indexes; i.e. either the New Zealand Maternal Worth (New Zealand group) or the €uro-star Replacement index (Irish groups). The impact of maternal genetic merit on reproductive traits such as litter size; lambing traits such as gestation length, birth weight, lambing difficulty, mothering ability, and productivity traits such as the number of lambs born and weaned were analyzed using linear mixed models. For binary traits, the impact of maternal genetic merit on reproductive traits such as conception to first AI service; lambing traits such as dystocia, perinatal lamb mortality and productivity traits such as ewe survival were analyzed using logistic regression. New Zealand ewes outperformed Low Irish ewes for conception to first AI (P&lt;0.05) and litter size (P=0.05). Irish ewes were more likely to suffer from dystocia (6.84 (High Irish) and 8.25 (Low Irish) times) compared to NZ ewes (P&lt;0.001); birth weight and perinatal mortality did not differ between groups (P&gt;0.05). Lambs born from NZ ewes were 4.67 (95% CI: 1.89 to 11.55; P&lt;0.001) and 6.54 (95% CI: 2.56 to 16.71; P&lt;0.001) times more likely to stand up and suckle unassisted relative to lambs born from High or Low Irish ewes, respectively. New Zealand and High Irish ewes had a greater number of lambs born and weaned throughout the duration of the study compared to their Low Irish counterparts (P&lt;0.001). New Zealand ewes tended to be more likely to survive from one year to the next compared to Low Irish ewes (P=0.07). Irish ewes of high maternal genetic merit outperformed their Low counterparts in total number of lambs born and weaned per ewe, but performance did not differ across other traits investigated. This highlights the importance of continuous development of the Irish maternal sheep index to ensure favourable improvements in reproductive, lambing and productivity traits at farm level. Overall, results demonstrate the suitability of NZ genetics in an Irish production system.

PSXII-28 Effects of the nutritional plane before and after breeding on performance of different hair sheep breeds

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 489-490
Author(s):  
Farida Belkasmi ◽  
Raquel V Lourencon ◽  
Ryszard Puchala ◽  
Terry A Gipson ◽  
Luana Ribeiro ◽  
...  
Keyword(s):  
Body Weight ◽  
Birth Weight ◽  
Wheat Straw ◽  
Litter Size ◽  
Birth Rate ◽  
Average Daily Gain ◽  
Breeding Period ◽  
Hair Sheep ◽  
Cereal Grain ◽  
Before And After

Abstract Female hair sheep, 27 Dorper (DOR), 41 Katahdin (KAT), and 39 St. Croix (STC), were used to determine influences of nutritional planes before and after breeding on performance. There were 35 multiparous and 72 primiparous sheep, the latter 2.8±0.20 yr of age. Wheat straw [4% crude protein; dry matter (DM) basis] was consumed ad libitum and supplemented with approximately 0.25% initial body weight (BW) of soybean meal (SBM; Low) or a 1:3 mixture of SBM and rolled corn at 1% BW (High; DM). The supplementation period was 162 d, and with breeding of animals in 2 groups sequentially the pre-breeding period was 84 and 97 d and that after breeding began was 78 and 65 d. Wheat straw DM intake (1.75, 1.30, 1.57, 1.15, 1.80, and 1.38% BW; SEM=0.112), average daily gain (-46, 42, -44, 70, -47, and 51 g; SEM=7.3), and change in body condition score (-0.61, 0.36, -0.53, 0.27, -0.39, and -0.18 for DOR-Low, DOR-High, KAT-Low, KAT-High, STC-Low, and STC-High, respectively; SEM=0.058) were influenced (P &lt; 0.05) by supplement treatment. Birth rate (66.7, 93.5, 84.6, 95.5, 82.8, and 100.0; SEM=9.83) and individual lamb birth weight (4.50, 4.61, 4.28, 3.98, 3.73, and 3.88 kg; SEM=0.201) were not affected by supplement treatment (P = 0.063 and 0.787, respectively), although litter size (0.92, 1.21, 1.17, 1.86, 1.12, and 1.82; SEM=0.221) and total litter birth weight (5.84, 5.74, 5.92, 7.52, 5.04, and 6.78 kg for DOR-Low, DOR-High, KAT-Low, KAT-High, STC-Low, and STC-High, respectively; SEM=0.529) were greater (P &lt; 0.05) for High than for Low. In conclusion, although there was some compensation in wheat straw intake for the different levels of supplementation, SBM given alone rather than with cereal grain adversely affected body weight and condition and reproductive performance, the latter primarily through litter size but also via a trend for an effect on birth rate.

The effect of nutrition in mid pregnancy and ewe liveweight change on birth weight and management for lamb survival in highly fecund ewes

1992 ◽  
Vol 32 (1) ◽  
pp. 1 ◽  
Author(s):  
NM Fogarty ◽  
DG Hall ◽  
PJ Holst
Keyword(s):  
Birth Weight ◽  
Treatment Period ◽  
Litter Size ◽  
Late Pregnancy ◽  
Weather Conditions ◽  
Gestation Length ◽  
Nutritional Treatment ◽  
Lamb Survival ◽  
Staple Strength ◽  
Fleece Weight

The effect of moderate undernutrition in mid pregnancy on lamb birth weight and survival of single- and multiple-bearing ewes is reported. A total of 1220 ewes of 3 crossbred types with different fecundity, Booroola Merino x Dorset (BD), Trangie Fertility Merino x Dorset (TD) and Border Leicester x Merino (BLM), were examined over 2 years. The treatments were low (L) and high (H) nutrition at pasture for 4 weeks from about day 75 of pregnancy. Ewe liveweight of the L group at the end of the treatments was 5 kg lower in 1984 and 8 kg lower in 1985 (P<0.01) than the H group. The differences were smaller by late pregnancy and post-lambing. The L treatment increased (P<0.01) birth weight by 0.16 kg in 1984 but had little effect in 1985. Litter size had the greatest effect on birth weight (P<0.01). Ewe crossbred type and lamb sex effects were also significant (P<0.01), although they tended to be reduced for higher order births. Nutritional treatment had no effect on gestation length. Ewe liveweight at joining and weight gains before and after the treatment period significantly affected birth weight and accounted for the large difference in birth weight between years (0.7 kg). Ewe weight gain during the treatment period in mid pregnancy had no significant effect on lamb birth weight. Nutritional treatment in mid pregnancy had no effect on lamb survival. Litter size significantly affected lamb survival, although inclusion of birth weight in the model reduced the effect. Weather conditions, as measured by chill index, significantly (P<0.01) affected lamb survival in 1984 but accounted for less variation in 1985 (P<0.05). Lamb survival for ewes was ranked BLM > TD > BD. Maximum survival was achieved at birth weights of 4-5 kg from BD and TD ewes and 5-6 kg from BLM ewes. The L treatment reduced (P<0.01) ewe greasy fleece weight by 0.15 kg but did not affect staple strength. Plasma glucose concentration at the end of treatment was lower (P<0.01) for L ewes, but there was no difference between L and H ewes in late pregnancy. Glucose declined with increasing fetal number. Plasma B-hydroxybutyrate concentration was lower for the H group than for L, and also for BLM than TD and BD ewes (P<0.01).

Genetic and environmental causes of variation in birth weight of Black Bengal goats

1970 ◽  
Vol 74 (3) ◽  
pp. 409-414 ◽  
Author(s):  
S. K. Moulick ◽  
O. Syrstad
Keyword(s):  
Body Weight ◽  
Birth Weight ◽  
Litter Size ◽  
Partial Correlation ◽  
Genetic Variance ◽  
Additive Genetic Variance ◽  
Maternal Environment ◽  
Breeding Station ◽  
Environmental Causes ◽  
Partial Correlation Coefficient

SUMMARYAn investigation on the different environmental and genetic causes of variation in the birth weight of Black Bengal goats was conducted at the Central Livestock Research-cum-Breeding Station, Haringhata, India. The data consisted of 1375 birth weight records of kids from 284 does and 20 bucks during the period from 1955 to 1961. The goats were maintained under standard farm management throughout the period.Year had significant effect on birth weight, while the effect of season was insignificant. The interaction was, however, significant. Male kids were significantly heavier at birth than the females. Age of dam and litter size also caused significant variation in birth weight of kids.From paternal half-sib analysis the heritability of birth weight was estimated to be 0·01. Full sib and maternal half sib analyses estimated the maternal environment common to litter mates to account for 60 % of the variance, out of which 25 % were due to permanent differences between dams. The remaining 39 % were attributed to individual environment, including most of the non-additive genetic variance. The heritability of maternal environment was estimated to be 0·2.The partial correlation coefficient between birth weight of kids and post-kidding body weight of their dam, independent of litter size and age of dam, was 0·175. Thus, body size of dam, as indicated by post kidding body weight, did not reveal much information about maternal environment.

scholarly journals PENGARUH BOBOT LAHIR DENGAN PENAMPILAN ANAK BABI SAMPAI DISAPIH

ZOOTEC ◽  
2015 ◽  
Vol 35 (1) ◽  
pp. 138
Author(s):  
Marfiane M. Nangoy ◽  
M. T. Lapian ◽  
M. Najoan ◽  
J. E. M. Soputan
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Birth Weight ◽  
Litter Size ◽  
Direct Observation ◽  
Body Weight Gain ◽  
Weaning Weight ◽  
General Picture ◽  
Keywords Birth Weight ◽  
Observation Results

THE EFFECT OF BIRTH WEIGHT WITH THE APPEARANCE OF THE PIGLETS UNTIL WEANING. The purpose of this research is to determine the corellation of birth weight with the appearance of the piglets until weaning. This research used the method of observation. Results or data obtained in this research, piglets from each parent is divided into 3 categories: high, medium, low. Retrieval of data held on a new born piglets, piglets aged 1 week until the time of weaning. Parameters observed in this research is the birth weight of piglets per head, body weight gain, the weight of piglets, and mortality (MRTA) piglets before weaned (%). Data were analyzed and presented descriptively, which is describing and explaining the general picture of direct observation. Based on the results of this research we concluded that litter size piglets, determines how high the birth weight, weaning weight, body weight gain, and mortality. The greater the birth weight more likely to obtain a high weaning weight as in this research the highest birth weight is 1.64 kg after weaning reached 7.54 kg. Keywords: Birth Weight, Piglets, Weaning

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