Physical and chemical characterization of the femur during and after the body development period in male and female guinea pigs
This study revealed that adolescence, adulthood, and gender are effective in the physical and chemical characterization of bone structure in guinea pigs. (Source: Animal Science Journal)
Source: Animal Science Journal - July 1, 2023 Category: Zoology Authors: Y ücehan Yılmaz, Yeşim Aslan Kanmaz, Saime Betül Baygeldi, Barış Can Güzel, Meryem Karan, Fuat Güzel, Sadık Yılmaz Tags: RESEARCH ARTICLE Source Type: research

A highly sensitive PCR method for A1 allele detection in A2 milk samples without DNA isolation
AbstractWe previously developed a genotyping method to detect the A1 and A2 alleles of the bovine β-casein gene. This method required DNA extraction from hair samples. Recently, demand for A2 milk (milk from cows homozygous for the A2 allele) has increased, and dairy farms are required to have certification to produce A2 milk. Here, we describe the development of a new, simple, and sensitive ge notyping method for the β-casein gene that does not require DNA extraction. This method uses the CycleavePCR technique and can amplify the β-casein gene directly from raw milk samples. Genotypes obtained from the milk samples (n...
Source: Animal Science Journal - June 25, 2023 Category: Zoology Authors: Ayumi Watanabe, Kyo Munakata, Miyabi Muto, Takashi Kuramoto Tags: SHORT COMMUNICATION Source Type: research

Relationship between refractive index and fatty acid composition by gas chromatography and near ‐infrared fiber‐optic method in bovine fat
AbstractThe causes of the difference in fatty acid composition between gas chromatography (GC) and near-infrared fiber-optic method (NIR) in bovine fat and their countermeasures were studied using absolute values of refractive index. Using intermuscular fat from 45 crossbreeds, refractive index was measured by using a refractometer, and saturated fatty acids (SFA) and monounsaturated fatty acids (MUFA) were measured by NIR and GC. The correlation coefficients between GC and NIR in SFA and MUFA, as well as those between refractive index and GC or NIR (in SFA and MUFA), were all greater than or equal to 0.8 (p <  0.01...
Source: Animal Science Journal - June 9, 2023 Category: Zoology Authors: Naoaki Obana, Kazunori Matsumoto, Megumi Kimura, Masanori Ichikawa, Masakazu Irie Tags: RESEARCH ARTICLE Source Type: research

Early detection of disease onset through changes in appearance of pre ‐weaning calves
This study measured the changes in appearance that led to disease onset in 66 pre-weaning Holstein calves. The appearance scores of the calves were recorded for 7  days before the onset of digestive or respiratory diseases. Appearance features (ear position, head position, topline curve, hair coat length, hair coat gloss, eye opening, and sunken eyes) were recorded using video camera images and scored from 0 (healthy) to 2 (poor). Among the calves with resp iratory diseases, the proportion of calves with a score of 0 for ear position decreased linearly over time (p = 0.0437). Among the calves with digestive diseases,...
Source: Animal Science Journal - June 8, 2023 Category: Zoology Authors: Yuko Shingu, Akira Dokoshi, Koichiro Ueda Tags: RESEARCH ARTICLE Source Type: research

Effect of intramuscular fat content on the sensory characteristics and dynamic flavor attributes of Japanese black cattle beef
AbstractThe intramuscular fat (IMF) in beef affects its flavor intensity and attributes, which have a significant impact on palatability. We conducted a sensory evaluation by descriptive analysis, Temporal Check-All-That-Apply, and a chemical analysis of 40 ribeye steaks from Japanese Black cattle to determine the relationship among IMF% and sensory characteristics including dynamic flavor attributes. The increased IMF% of Japanese Black cattle beef had intensified sweet and grilled/roasted flavors and reduced off-flavor, whereas excessive IMF% resulted in a decrease in water-soluble precursors of volatile and taste compou...
Source: Animal Science Journal - June 1, 2023 Category: Zoology Authors: Satomi Hirai, Ayaka Kawai, Yurika Mizuno, Seiki Sasaki, Fumiko Iida Tags: RESEARCH ARTICLE Source Type: research

Changes in piglet and litter characteristics across parities in two highly prolific sow hybrids in an outdoor organic herd
AbstractHigh piglet mortality constitutes a welfare challenge in organic pig production. Litter characteristics were investigated from parities 1 –5 of two hyper-prolific hybrids with different selection traits in an organic commercial herd (DanBred vs. Topigs Norsvin [TN70]). TN70 sows had more functional teats than DanBred sows, and their offspring had higher birth weights. Several interactions between hybrid and parity were found. The to tal born increased with higher parity and was more pronounced for DanBred sows. Litter weight at weaning was higher in parities 1–4 for TN70 compared with DanBred, and within DanBre...
Source: Animal Science Journal - May 30, 2023 Category: Zoology Authors: Cecilie Kobek ‐Kjeldager, Mona Lillian Vestbjerg Larsen, Lene Juul Pedersen Tags: RESEARCH ARTICLE Source Type: research

Ethanolamine plasmalogens derived from whale brain stimulate both follicle ‐stimulating hormone and luteinizing hormone secretion by bovine gonadotrophs
AbstractEthanolamine plasmalogens (EPls) are the only known ligands of a novel receptor, G protein-coupled receptor 61, and bovine brain EPls stimulate follicle-stimulating hormone (FSH) but not luteinizing hormone (LH), secreted by bovine gonadotrophs. We hypothesized that the brain EPls of whales (Balaenoptera edeni), anotherCetartiodactyla with at least twice the lifespan of bovines, could stimulate FSH secretion by gonadotrophs. To test this hypothesis, bovine gonadotrophs (from approximately 2-year-old Japanese Black heifers) were cultured for 3.5  days and treated with increasing concentrations of brain EP1s from wh...
Source: Animal Science Journal - May 30, 2023 Category: Zoology Authors: Risa Saito, Takeharu Bando, Miyako Kotaniguchi, Tsutomu Tamura, Tomoe Kuno, Kenji Watanabe, Yoichi Mizukami, Shinichi Kitamura, Hiroya Kadokawa Tags: RESEARCH ARTICLE Source Type: research

The capacity of ante ‐mortem inspection of pigs at the abattoir to predict post‐mortem findings and associated financial implications: A study at batch level
This study aimed to investigate the associations between severe ear, tail, and skin lesions, hernias, bursitis, and rectal prolapses and meat inspection finding in slaughter pigs, including carcass weight and financial implications associated with carcass condemnations at batch level. Data were collected from 13,296 pigs from 116 batches from a single abattoir. Spearman's correlation coefficients were calculated to analyze the degree of association between the prevalence of welfare issues and condemnation findings. The association between batch-level results of carcass weight, batch size, and the prevalence of welfare issu...
Source: Animal Science Journal - May 30, 2023 Category: Zoology Authors: Dayane Lemos Teixeira, Laura C. Salazar, Laura A. Boyle Tags: RESEARCH ARTICLE Source Type: research