McKenzie L Haimon
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View article: Feeding rumen-protected choline during the periconceptional period programs postnatal phenotype of suckled beef calves
Feeding rumen-protected choline during the periconceptional period programs postnatal phenotype of suckled beef calves Open
View article: Interactions between type of culture medium and addition of serum on development and gene expression of bovine blastocysts produced in vitro
Interactions between type of culture medium and addition of serum on development and gene expression of bovine blastocysts produced in vitro Open
Serum is commonly added to the culture medium to improve the production of bovine embryos in vitro, but its molecular consequences for the resultant embryo are unclear. Here, we showed that blastocysts produced in serum experienced changes…
View article: A low concentration of choline chloride alters the developmental program of the bovine preimplantation embryo
A low concentration of choline chloride alters the developmental program of the bovine preimplantation embryo Open
Choline is a known developmental programming agent of the bovine preimplantation embryo. Culture of the embryo with 1.8 mmol/L choline, a concentration much higher than in blood, alters development to cause increased weaning weight and oth…
View article: Examining the long-term impacts of ergot alkaloids on fetal heifer development and subsequent growth and reproductive performance
Examining the long-term impacts of ergot alkaloids on fetal heifer development and subsequent growth and reproductive performance Open
Consumption of toxic endophyte-infected tall fescue (EI) results in poor reproductive performance in domestic livestock. In this study, the objective was to evaluate the effects of ergovaline exposure during mid-gestation (days 93 through …
View article: PSVI-29 Late-Breaking: Exposure to 1.8 mM choline chloride does not impact development to the blastocyst stage or pregnancy rate after transfer for embryos produced in vitro
PSVI-29 Late-Breaking: Exposure to 1.8 mM choline chloride does not impact development to the blastocyst stage or pregnancy rate after transfer for embryos produced in vitro Open
Choline is a nutrient that plays a role as a precursor for the neurotransmitter acetylcholine, the membrane phospholipid phosphatidylcholine, and the methyl donor betaine. Embryos produced in vitro are usually cultured without an exogenous…
View article: 253 Physiological Responses to Heat Stress of Holstein Heifers Carrying the SLICK1 Allele of the Prolactin Receptor (PRLR) Gene
253 Physiological Responses to Heat Stress of Holstein Heifers Carrying the SLICK1 Allele of the Prolactin Receptor (PRLR) Gene Open
The objectives of this study were to evaluate physiological responses to heat stress of Holstein heifers carrying the SLICK1 allele of the PRLR, i.e., the slick mutation. Slick and non-slick females were produced in central CA (n = 3 farms…
View article: 13 Changes in Cytokine Profiles in Response to Ergovaline Exposure in Slick vs. Normal Hair Coat in Beef Heifers
13 Changes in Cytokine Profiles in Response to Ergovaline Exposure in Slick vs. Normal Hair Coat in Beef Heifers Open
Fescue toxicosis is a syndrome common in cattle grazing fescue containing an endophyte that produces ergot alkaloids. Our lab has previously demonstrated that chronic exposure of ergot alkaloids adversely effects innate immune response. Th…
View article: 106 In Utero Exposure of Ergot Alkaloids does not Impact Heifer Growth and Reproductive Performance
106 In Utero Exposure of Ergot Alkaloids does not Impact Heifer Growth and Reproductive Performance Open
In utero exposure to toxins can alter fetal development and postnatal performance. The objective of this study was to investigate the effects of in utero exposure of ergot alkaloids via endophyte-infected (EI) fescue diets during gestation…