Search Results - "Theriogenology"

Pivotal periods for pregnancy loss during the first trimester of gestation in lactating dairy cows by Wiltbank, Milo C., Baez, Giovanni M., Garcia-Guerra, Alvaro, Toledo, Mateus Z., Monteiro, Pedro L.J., Melo, Leonardo F., Ochoa, Julian C., Santos, José E.P., Sartori, Roberto

“…Loss of pregnancy can occur at many different stages of gestation and for a variety of causes but clearly produces a negative impact for reproductive and…”
Get full text

Impact of heat stress on lactational performance of dairy cows by Tao, Sha, Orellana Rivas, Ruth M., Marins, Thiago N., Chen, Yun-Chu, Gao, Jing, Bernard, John K.

“…Lactating dairy cows exhibit a myriad of responses to heat stress. These responses partially facilitate the thermal balance between heat gain and heat loss,…”
Get full text

Application of preserved boar semen for artificial insemination: Past, present and future challenges by Waberski, Dagmar, Riesenbeck, Anja, Schulze, Martin, Weitze, Karl Fritz, Johnson, Lawrence

“…Artificial insemination (AI) is now used for breeding more than 90% of the sows in most of the world's primary pork producing countries. Despite the…”
Get full text

Sperm cryopreservation update: Cryodamage, markers, and factors affecting the sperm freezability in pigs by Yeste, Marc

“…Cryopreservation is the most efficient method for long-term preservation of mammalian sperm. However, freeze-thawing procedures may strongly impair the sperm…”
Get full text

Amelioration of heat stress-induced damage to testes and sperm quality by Shahat, A.M., Rizzoto, G., Kastelic, J.P.

“…Heat stress (HS) occurs when temperatures exceed a physiological range, overwhelming compensatory mechanisms. Most mammalian testes are ∼4–5 °C cooler than…”
Get full text

Influence of nutrition, body condition, and metabolic status on reproduction in female beef cattle: A review by D'Occhio, Michael J., Baruselli, Pietro S., Campanile, Giuseppe

“…Nutrition is of fundamental importance in reproductive function of female beef cattle. Nutrition determines live weight (LW) and body condition score (BCs) and…”
Get full text

Computer-assisted sperm analysis (CASA): Capabilities and potential developments by Amann, Rupert P., Waberski, Dagmar

“…Computer-assisted sperm analysis (CASA) systems have evolved over approximately 40 years, through advances in devices to capture the image from a microscope,…”
Get full text

Artificial insemination in pigs today by Knox, R.V.

“…Use of artificial insemination (AI) for breeding pigs has been instrumental for facilitating global improvements in fertility, genetics, labor, and herd…”
Get full text

Genital bovine leptospirosis: A new look for an old disease by Loureiro, Ana P., Lilenbaum, Walter

“…Bovine leptospirosis is often associated with host-adapted leptospires infections, such as strains belonging to the Sejroe serogroup. Although bovine…”
Get full text

Bidirectional communication between cumulus cells and the oocyte: Old hands and new players? by Russell, Darryl L., Gilchrist, Robert B., Brown, Hannah M., Thompson, Jeremy G.

“…Cumulus cell–oocyte communication is an essential feature of mammalian reproduction. Established mechanisms involve the bidirectional transfer of ions and…”
Get full text

Sperm quality in fish: Determinants and affecting factors by Kowalski, Radosław Kajetan, Cejko, Beata Irena

“…Fish sperm quality assessment is helpful for optimizing production and for monitoring the environmental state. Sperm can be monitored relatively easy and, to…”
Get full text

Sperm handling in aquatic animals for artificial reproduction by Beirão, José, Boulais, Myrina, Gallego, Victor, O'Brien, Justine K., Peixoto, Silvio, Robeck, Todd R., Cabrita, Elsa

“…Artificial reproduction involves collection and handling of gametes in a way that secures their quality and maximizes the fertilization outcome. In addition to…”
Get full text

Heat stress effects on sheep: Are hair sheep more heat resistant? by McManus, Concepta M., Faria, Danielle A., Lucci, Carolina M., Louvandini, Helder, Pereira, Sidney A., Paiva, Samuel R.

“…Climatic variables can trigger physiological, biochemical, haematological and hormonal alterations that influence the maintenance of homeothermy and can affect…”
Get full text

Impact of selenium nano-particles in semen extender on bull sperm quality after cryopreservation by Khalil, Wael A., El-Harairy, Mostafa A., Zeidan, Alaa E.B., Hassan, Mahmoud A.E.

“…The aim of this study was to evaluate the effect of adding different concentrations of selenium nano-particles (Se-NPs) in semen extender on bull sperm…”
Get full text

Heat stress and bull fertility by Morrell, Jane M.

“…Since bull fertility may be adversely affected by hot humid conditions, the current increase in global temperature is of concern for future livestock…”
Get full text

Two strongly linked single nucleotide polymorphisms (Q320P and V397I) in GDF9 gene are associated with litter size in cashmere goats by Wang, Xinyu, Yang, Qing, Wang, Ke, Yan, Hailong, Pan, Chuanying, Chen, Hong, Liu, Jinwang, Zhu, Haijing, Qu, Lei, Lan, Xianyong

“…Growth differentiation factor 9 (GDF9) gene is an effective intra-ovarian regulator; it plays a crucial role in early folliculogenesis in female mammals. The…”
Get full text

Seasonal heat stress: Clinical implications and hormone treatments for the fertility of dairy cows by De Rensis, F., Garcia-Ispierto, I., López-Gatius, F.

“…Heat stress has consequences on both the physiology and reproductive performance of cows, but the most dramatic effect for dairy producers is the decrease…”
Get full text

A review of the ongoing discussion about definition, diagnosis and pathomechanism of subclinical endometritis in dairy cows by Wagener, Karen, Gabler, Christoph, Drillich, Marc

“…In the last decade, several new aspects of the inflammation of the bovine endometrium have been investigated and described, including a new definition of…”
Get full text

Mogroside V improves porcine oocyte in vitro maturation and subsequent embryonic development by Nie, Junyu, Yan, Ke, Sui, Lumin, Zhang, Huiting, Zhang, Hengye, Yang, Xiaogan, Lu, Shengsheng, Lu, Kehuan, Liang, Xingwei

“…Oocyte in vitro maturation (IVM) plays a pivotal role in in vitro embryo production. However, the efficiency of IVM is still low and needs to be further…”
Get full text

Method agreement analysis: A review of correct methodology by Watson, P.F., Petrie, A.

“…The correct approach to analyzing method agreement is discussed. Whether we are considering agreement between two measurements on the same samples…”
Get full text