scholarly journals A REVIEW ON THE EFFECT OF ENDOCRINE DISRUPTORS ON REPRODUCTIVE PERFORMANCE OF SMALL RUMINANT

2020 ◽  
Vol 10 (2) ◽  
pp. 145-160
Author(s):  
Malam Abulbashar, Mujitaba ◽  
Szilard Bodo ◽  
Nora Vass ◽  
Usman Abdullahi
Keyword(s):  
Endocrine Disruptors ◽  
Reproductive Performance ◽  
Small Ruminant

scholarly journals Influence of Small Ruminant Lentivirus Infection on Reproductive Traits in Ewes

2013 ◽  
Vol 57 (1) ◽  
pp. 15-18
Author(s):  
Czesława Lipecka ◽  
Andrej Junkuszew ◽  
Jacek Kuźmak ◽  
Tomasz M. Gruszeck ◽  
Bożena Kozaczyńska ◽  
...  
Keyword(s):  
Reproductive Performance ◽  
Small Ruminant ◽  
Reproductive Traits ◽  
Genetic Group ◽  
Sheep Flock ◽  
Research Results ◽  
Genetic Groups ◽  
Negative Effect

AbstractThe study included a sheep flock comprising five genetic groups. The ELISA was applied to perform constant monitoring (every six months) for the infection of ewes with small ruminant lentivirus (SRLV). The research results demonstrated a negative effect of SRLVs infection on lamb rearing that, depending on the genetic group, proved to be lower 1.3%-1.4% compared to the seronegative mothers. At relatively equal fertility (94%-100%) and more differentiated prolificacy (179%-198%) in all the examined groups (except the Suffolk breed), a rearing index was higher in the seronegative animals 6.8%-24.1% compared to the seropositive mothers. The Suffolk breed proved to be the genetic group most susceptible to SRLV infection. A prolificacy of infected ewes was 10% lower, a lamb rearing rate was 13% lower , and a general reproductive performance was 18% lower in comparison to healthy ewes.

Reproductive performance of sheep and goats under native husbandry

1987 ◽  
Vol 109 (1) ◽  
pp. 201-203
Author(s):  
K. A. N. Esievo ◽  
L. O. Eduvie ◽  
O. O. A. Fasanya
Keyword(s):  
Birth Weight ◽  
Reproductive Performance ◽  
Small Ruminant ◽  
Small Ruminants ◽  
Seasonal Effects ◽  
Intensive Management ◽  
Extension Services ◽  
Sheep And Goats ◽  
Rural Producers ◽  
Research Centres

Although over 90% of small ruminant production in Nigeria is done under native husbandry or semiintensive management, relatively little information on their reproductive performance is available. However, information on the reproductive performance of Nigerian small ruminants under intensive management conducted at Research Centres or Institutes is readily available (Adu, Buvanendran & Lakpini, 1979; Adu, Brinckman & Kuteyi, 1979; Molokwu & Umunna, 1980; Osinowo & Ekpe, 1985). Such reproductive information includes age at first lambing or kidding, birth weight, lambing or kidding intervals, seasonal effects and conception rates. Although the latter findings are meant for dissemination through Extension Services to rural producers for application, records of the effects of such application are scanty.

scholarly journals Evaluation of Corn Furan Fatty Acid Putative Endocrine Disruptors on Reproductive Performance in Adult Female Chickens

2006 ◽  
Vol 85 (10) ◽  
pp. 1795-1797
Author(s):  
K.W. Wilhelms ◽  
G.A. Kraus ◽  
J.D. Schroeder ◽  
J.W. Kim ◽  
S.A. Cutler ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Endocrine Disruptors ◽  
Adult Female ◽  
Reproductive Performance ◽  
Furan Fatty Acid

Adipositas – Teil 2: Auslöser und Ursachen

2017 ◽  
Vol 15 (01) ◽  
pp. 12-18
Author(s):  
Hans-Peter Friedrichsen
Keyword(s):  
Endocrine Disruptors

SummaryAn der Entstehung von Adipositas sind zahlreiche Faktoren beteiligt. Dazu gehören auch epigenetische Veränderungen, ausgelöst durch pränatale Einflüsse wie die Ernährung der Mutter in der Schwangerschaft oder Endocrine disruptors. Neben dem Mikrobiom sowie der durch extrinsische und intrinsische Faktoren beeinflussten Regulation von Appetit und Sättigung spielt die Zusammensetzung der Ernährung eine wichtige Rolle.

РОДСТВЕННЫЕ ГРУППЫ РЕДКИХ ПОРОД ГУСЕЙ

2019 ◽  
Keyword(s):  
Reproductive Performance ◽  
Gene Pool

ЖАРКОВА И.П., ГРИШИНА Д. С. Федеральный научный центр «Всероссийский научно-исследовательский и технологический институт птицеводства» Российской академии наук Аннотация: Авторами изучены генетические параметры хозяйственно-полезных признаков гусей (сохранность, яйценоскость, масса яиц, оплодотворенность и выводимость яиц, вывод гусят) в зависимости от их происхождения. Новизна работы заключается в том, что впервые проведен анализ закономерностей проявления репродуктивных качеств у родственных групп гусей. При сравнительном изучении 21 породы гусей установлено, что группа пород гусей, родственных между собой по общему селекционному предку, а именно китайской серой породе (1-я родословная), имеет более высокие воспроизводительные способности по сравнению с другими породами и группами пород. Полученные данные будут применяться в дальнейшей работе с целью совершенствования приемов сохранения генофонда малочисленных пород гусей. Ключевые слова: ГЕНОФОНД ПОРОД ГУСЕЙ, РОДСТВЕННЫЕ ГРУППЫ, РЕПРОДУКТИВНЫЕ КАЧЕСТВА, GENE POOL OF GEESE BREEDS, BIOGENETICALLY RELATED GROUPS OF BREEDS, REPRODUCTIVE PERFORMANCE

ПРЕРЫВИСТОЕ ОСВЕЩЕНИЕ ПОВЫШАЕТ ЭФФЕКТИВНОСТЬ ИСКУССТВЕННОГО ОСЕМЕНЕНИЯ КУР В КЛЕТКАХ

2019 ◽  
Keyword(s):  
Reproductive Performance ◽  
Artificial Insemination ◽  
Egg Production ◽  
Laying Hens ◽  
Electric Energy ◽  
Productive Performance ◽  
Feed Conversion ◽  
Scientific Center ◽  
Academy Of Sciences ◽  
Egg Fertility

Intermittent Lighting Improves the Efficiency of Artificial Insemination in Cage Housed Laying Hens Kavtarashvili A.Sh., Kolokolnikova T.N. Federal Scientific Center “All-Russian Research and Technological Poultry Institute” of Russian Academy of Sciences Omsk Agrarian Scientific Center Summary: The effects of different lighting regimes on the oviposition schedule, productive performance, and reproductive efficiency in cage housed laying hens of layer parental flock (Hisex White-R) were studied; the reasonable regime of artificial insemination (AI) under intermittent lighting is proposed. It was found that intermittent lighting regime 1L:4D:4L:1D:4L:10D compared to the constant lighting significantly alters oviposition schedule: under this regime 82.3% of all daily eggs were laid until 9 am (vs. 66.6% in control). This regime and AI at 10 am improved the productive and reproductive performance compared to control (constant lighting 16L:8D and AI at 12 am): mortality by 1.9%, egg production per initial hen by 3.8%, egg weight by 1.1%, percentage of eggs suitable for incubation by 1.9%, egg fertility by 0.9%, hatchability by 2.3%, hatch of chicks by 2.9%, feed conversion ratio (kg of feed per 10 eggs) by 5.3%, the expenses of electric energy for lighting (per 1000 eggs suitable for incubation) by 54.5%. Key words: INTERMITTENT LIGHTING, CAGE HOUSED LAYERS, ARTIFICIAL INSEMINATION (AI), OVIPOSITION SCHEDULE, AI TIMING, PRODUCTIVE PERFORMANCE, REPRODUCTIVE PERFORMANCE

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