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Showing 1 to 16 of 16 for “"PROLIFICACY"”.
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Combining Ability for Ear Prolificacy and Response of Prolific Maize (Zea May L.) Hybrids to Low Nitrogen Stress
… yield in maize, it is important to consider ear prolificacy which is a major yield component. Therefore this study was designed to estimate combining ability in maize. Exotic germplasm from the International Maize and Wheat Improvement Center and the Institute of Tropical Agriculture as well as …
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Reproductive performance of dorset ewes in the star accelerated lambing system
… traits considered were ewe fertility, prolificacy, days to first lambing (DFL) and days between lambing (DBL). Fertility and prolificacy differed (P < .001) by exposure seasons. Exposure during favorable seasons (S1, S4, S5) increased fertility (P < .001) and prolificacy (P < .01) over …
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Induction of fertile estrus during seasonal anestrus in ewes and fall born ewe lambs
… to both service periods by 20 percentage points. Prolificacy to the first service period in ewes treated with FSH was greater than the prolificacy in control and all ewes lambing to the second service period. Treatment with P4 for 5 d was as effective as for 12 d to induce fertile estrus in …
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Budget analysis of quarter-Finn and Western ewes in spring- and fall-lambing systems
… on ewe fertility (ewes lambing/ewes exposed), prolificacy (lambs born/ewe lambing) and lambing date, and on lamb birth weight, 30-d survival, and average daily gain (ADG) to 55 d and to weaning were evaluated. Fertility was higher in spring than in fall (94 vs 64%, P<.01). Use of %-Finn ewes …
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Developing Breeding Objectives for Targhee Sheep
… for Targhee sheep at different levels of prolificacy and triplet survival. Economic weights (EW) were derived for estimated breeding values (BV) from National Sheep Improvement Program genetic evaluations for 120 d weaning weight (WW), maternal milk (MM), yearling weight (YW), fleece …
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Logistic growth curve parameter estimates for scrotal circumference and relationships with female reproduction in crossbred sheep
… lambs were kept for fall breeding. Fertility, prolificacy and postweaning spring mating behavior of ewes that had lambed were measured. After ewes lambed, they were exposed to vasectomized rams and checked for postweaning spring mating behavior. Restricted maximum likelihood (REML) was used to …
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Evaluating long term benefits of genomic selection programs in beef cattle breeding programs in Western Canada
… of cows and sires in each breeding group, bull prolificacy indexes (BPI) were calculated. BPI ranged from 0-4 and sires were categorized based on BPI for analysis with groups representing bottom 25% of sires BPI, middle 50%, and top 25%. Age of sires influenced sire prolificacy between …
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Genetics of resistance to Haemonchus contortus infections in sheep
… growth in ewes but not in lambs. Fertility and prolificacy in ewes were not related to resistance. Breed differences in resistance to H. contortus were also evaluated in 4 to 6-mo-old crossbred Dorset and Dorper, straightbred Katahdin, and Barbados Blackbelly x St. Croix lambs. Dorpers were not …
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Melengestrol acetate and norgestomet for the induction of synchronized estrus in seasonally anovular ewes
… from ram introduction to lambing. Fertility and prolificacy were not different for C, MGA, or 5MB ewes. Of the two progestogen treatments used alone, lambing rate was 85 and 59 % (P < .03) for OMGA and OSMB ewes, respectively. Ewes plimed with zeranol before MGA or 5MB treatment exhibited similar …
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Wordsworth's Decline: Self-editing and Editing the Self
… “Great Decade” (1798-1807)—an isolated epoch of prolificacy and genius. His subsequent works, it is argued, neither surpass nor equal his initial efforts; the course of his career after 1808 may be best described in terms of declivity, ebb, and decline. Due to its ideological complicity with the …
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Sink-pulled simulation of the maize crop
… improvements would be the capability to simulate prolificacy, and the estimation of nitrogen stress effects on yield.</p>
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Genetic evaluation of ewe productivity and its component traits in Katahdin and Polypay sheep
… effects on WW were 0.88 and 0.58, respectively. Prolificacy was independent of ELF and LAMB3.
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Phenotypic and genetic evaluation of fitness characteristics in sheep under a range environment
… body weight, fleece weight and quality, prolificacy, body condition, ewe stayability and lamb survival. Average heritability estimates for lamb birth weight (BWT), weaning weight (WW), maternal weaning weight, yearling body weight, fleece weight, spinning count and staple length were …
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THE LIFE AND WORKS OF HENRY ISAAC STEVENS — ARCHITECT
… the range of building styles he employed. His prolificacy, as revealed by the number of new buildings he designed (and in the case of churches those which he restored or repaired), provided an indication of his professional status in Derby. The information discovered with regard to his …
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Management practices, morphometric body measurements and diseases of local Zambian goats
… cool, dry season respectively. The average flock prolificacy and fecundity for the whole period was 1.36 and 1.28 respectively. The risk rate for seasonal mortality was highest (15.1%) for all classes of animals during the hot, wet part of the year. The overall average mortality risk rate for all …
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ΤΡΟΠΟΠΟΙΗΣΗ ΤΟΥ ΑΝΟΣΟΠΟΙΗΤΙΚΟΥ ΣΥΣΤΗΜΑΤΟΣ ΤΗΣ ΑΙΓΑΣ ΓΙΑ ΑΥΞΗΣΗ ΤΟΥ ΡΥΘΜΟΥ ΑΝΑΠΑΡΑΓΩΓΗΣ
THE INDUCTION OF ACTIVE IMMUNIZATION AGAINST ANDROSTENEDIONE IN INDEGENOUS DAIRY GOATS AND THE EFFECT ON THE FUNCTION OF REPRODUCTIVE AND ENDOCRINE SYSTEMS WAS STUDIED IN THE PRESENT RESEARCH. A TOTAL OF THREE (3) EXPERIMENTS WERE CONDUCTED DURING A PERIOD OF FOUR YEARS (1984-1988). IN CONCLUSION …