搜索结果: 1-15 共查到“家畜繁殖学 Reproductive”相关记录59条 . 查询时间(0.117 秒)
Factors affecting reproductive efficiency in German Shepherd bitches producing litters for Police of the Czech Republic
dog reproduction whelping litter size puppy losses
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2016/12/20
The present study on German Shepherd bitches bred in the same environment of a private kennel and producing offspring for working purposes aimed to ascertain if any of the parameters: litter size, num...
Bisphenol S instead of bisphenol A:a story of reproductive disruption by regretable substitution–a review
human health environment endocrine disruptor reproduction oocyte sperm
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2016/11/11
A range of substances that are released into the environment, foodstuffs and drinking water as a result of human activity were originally considered relatively harmless, and it was only later that the...
Effects of Dietary Energy Levels on the Physiological Parameters and Reproductive Performance of Gestating Gilts
Energy Level Gilts Body Weight Backfat Thickness Reproductive Performance
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2016/7/27
This experiment was conducted to investigate the effects of dietary energy levels on the physiological parameters and reproductive performance of gestating first parity sows. A total of 52 F1 gilts (Y...
Number of Calves Produced at Specified Age as a Measure of Reproductive Performance in Beef Cattle under Artificially-Inseminated Breeding Scheme
Beef Cattle Genetic Parameter Number of Calves Produced Reproductive Performance
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2016/4/29
Reproductive abilities in beef cattle herds are receiving increased attention due to recent rises in production costs. To achieve more efficient management, a measure of fertility, namely the number o...
Post-calving administration of uterine stimulants does not improve reproductive performance in dairy cows
endometritis oxytocin dinoprost ergometrin reproductive parameters
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2015/11/26
The aim of this study was to evaluate the effects of administration of oxytocin, in combination with
dinoprost or ergometrin, after parturition on the occurrence of clinical endometritis and subsequ...
Influence of long-term exposure to lead on its accumulation and elimination from tissues and on selected reproductive parameters in the Prussian carp (Carassius gibelio B.) in pond environment
Pb fish bioaccumulation depuration luteinizing hormone
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2015/10/29
The bioaccumulation of lead in selected tissues of Prussian carp kept in pond condition during 12 and 24 months of exposure to different doses (8, 13, 24, and 49 mg/kg) of this metal in feed and its e...
Estimation of genetic parameters for reproductive traits in Mehraban sheep
heritability genetic correlation
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2015/7/7
Studied traits were litter size at birth (LSB), litter size at weaning (LSW), litter mean weight per lamb born
(LMWLB), litter mean weight per lamb weaned (LMWLW), total litter weight at birth (TLWB...
Reproductive efficiency of Pelibuey and Romanov × Pelibuey ewes synchronized with synthetic progesterone and low doses of PMSG under a hot environment
hair-breed sheep estrus synchronization fertility eCG heat stress
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2015/6/24
Thirty-nine multiparous ewes (19 Pelibuey and 20 Romanov × Pelibuey) treated with fluorogestone acetate impregnated intravaginal sponges were used to evaluate the effects of low pregnant mare serum go...
Effects of dietary arginine supplementation on reproductive performance and immunity of sows
l-arginine litter performance placenta humoral immune
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2015/6/24
Arginine (Arg) is considered to have beneficial effects on placental development and function, as well as reproductive performance. The well-developed placenta is highly required in late gestation for...
Genetic effects of melatonin receptor genes on chicken reproductive traits
MTNR1A MTNR1B MTNR1C polymorphism egg production traits
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2015/6/24
The melatonin receptors are G protein-coupled receptors (GPCR) that bind melatonin. Three types of melatonin receptors have been cloned. The MTNR1A (or Mel1A or MT1) and MTNR1B (or Mel1B or MT2) recep...
Estimation of genetic parameters of reproductive traits in Zandi sheep using linear and threshold models
reproductive traits genetic parameters
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2015/6/23
Genetic parameters were estimated for four basic and two composite traits. Year of lambing
and age of ewe were used as fixed effects. Due to repeated record of ewe animal direct genetic effect...
Association of a microsatellite flanking FSHB gene with reproductive traits and reproductive tract components in pigs
pig FSHB gene microsatellite FSHBMS reproductive trait reproductive tract components
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2015/6/5
Microsatellite FSHBMS polymorphism at the 5’ flanking region of FSHB gene was genotyped and associations with reproductive traits in several pig populations and with reproductive tract components in t...
Genetic Parameters of Reproductive and Meat Quality Traits in Korean Berkshire Pigs
Berkshire Genetic Parameter Heritability Repeatability Genetic Correlation
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2016/5/18
Genetic parameters of Berkshire pigs for reproduction, carcass and meat quality traits were estimated using the records from a breeding farm in Korea. For reproduction traits, 2,457 records of the tot...
Reproductive Performance of Holstein Dairy Cows Grazing in Dry-summer Subtropical Climatic Conditions: Effect of Heat Stress and Heat Shock on Meiotic Competence and In vitro Fertilization
Artificial Insemination Heat Shock Oocyte Meiotic Maturation Maternal Heat Stress
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2016/5/18
The present study was designed to evaluate how environmental factors in a dry-summer subtropical climate in Terceira-Azores (situated in the North Atlantic Ocean: 38° 43′ N 27° 12′ W) can affect dairy...
Reproductive Performance of Arabian and Thoroughbred Mares under Subtropical Conditions of Pakistan
Mare Reproductive Performance Conception Rate Pakistan
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2016/5/16
Breeding records of 57 Arabian and 66 Thoroughbred mares were analysed to assess their reproductive performance under the subtropical conditions of Pakistan. The Arabian mares showed significantly hig...