AIMC Topic: Breeding

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Effect of postweaning heifer development system on average daily gain, pregnancy rates, and subsequent feed efficiency as a pregnant heifer.

Journal of animal science Dec 1, 2017
A 3-yr study utilized 300 Angus-based, spring-born heifers to evaluate postweaning heifer development systems on gain, reproductive performance, and feed efficiency as a pregnant heifer. Heifers were blocked by BW and randomly assigned to graze corn ...
Acclimatization Maternal Nutritional Physiological Phenomena Breeding Eating Body Weight Reproduction Animal Feed Zea mays Seasons Random Allocation Cattle Diet Pregnancy Pregnancy Rate Animal Husbandry Female Animals
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Maternal nutrition and stage of early pregnancy in beef heifers: Impacts on expression of glucose, fructose, and cationic amino acid transporters in utero-placental tissues.

Journal of animal science Dec 1, 2017
We hypothesized that maternal nutrition and day of gestation would impact utero-placental mRNA expression of the nutrient transporters , , , , and in beef heifers. Crossbred Angus heifers (n = 49) were estrous synchronized, bred via AI, assigned to n...
Amino Acid Transport Systems, Basic Maternal Nutritional Physiological Phenomena Pregnancy Female Glucose Animals Estrous Cycle Diet Fructose Breeding Cattle Endometrium Placenta Uterus
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Linear growth model analysis of factors affecting boar semen characteristics in Southern China.

Journal of animal science Dec 1, 2017
This study investigated the factors affecting the semen traits of boars in Southern China. A total of 172,408 ejaculates of boars from 9 AI centers were collected from January 2013 to May 2016. A linear growth model was used to analyze the effects of...
Semen Analysis Sperm Motility Semen Housing, Animal Breeding Seasons Linear Models Male Swine China Age Factors Animals Sperm Count
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Animal Breeding learning from machine learning.

Journal of animal breeding and genetics = Zeitschrift fur Tierzuchtung und Zuchtungsbiologie Apr 1, 2017
Machine Learning Animals Dairying Selection, Genetic Models, Biological Breeding
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Discrimination of Maize Haploid Seeds from Hybrid Seeds Using Vis Spectroscopy and Support Vector Machine Method.

Guang pu xue yu guang pu fen xi = Guang pu Nov 1, 2015
Doubled haploid (DH) lines are routinely applied in the hybrid maize breeding programs of many institutes and companies for their advantages of complete homozygosity and short breeding cycle length. A key issue in this approach is an efficient screen...
Breeding Principal Component Analysis Support Vector Machine Zea mays Haploidy Color Spectrum Analysis Seeds
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