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All Journal Hemera Zoa Ovozoa: Journal of Animal Reproduction
Tarsisius Considus Tophianong
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Veterinary

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FA-7 Practical Applications of Ultrasound for Pregnancy Diagnosis in Bali Cattle Herded Semi-Intensively in Maumere, NTT Cynthia Gaina; Tarsisius Considus Tophianong; Tri Utami
Hemera Zoa Proceedings of the 20th FAVA & the 15th KIVNAS PDHI 2018
Publisher : Hemera Zoa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (603.394 KB)

Abstract

Generally, real time, B-mode ultrasound scanner has become an essential part for veterinary reproduction applications. Diagnostic ultrasound seems to be a useful tool to study anatomical structures and to confirm echogenic pattern in reproductive organ (Holman et al, 2011). Many experiments showed that ultrasonography imaging has considerable beneficial for the evaluation of the internal structure of reproductive organ function in domestic animals (Beal et al, 1992) as it can be used as a non-invasive technique to evaluate animal reproductive health (Holman et al 2011). Pregnancy detection with ultrasonography provides more advantage compare to manual palpation because of its ability to detect early presence of embryo and its accuracy (Beal et al, 1992; Nation et al 2003). To the best of our knowledge, most of cattle farmers and veterinarians in Maumere have relied on one single method for detecting pregnancy in cows, that is, rectal palpation. However, this method has its limitation as it should be performed by a skillful technician to diagnose pregnancy as early as 40 days of gestation and it does not provide any information about the viability of the embryo or fetus. Therefore, this study aims to investigate pregnancy status of Bali cattle herded semi-intensively in Maumere, NTT by using ultrasonography.The objective of the research was to study the practical uses of ultrasound for pregnancy detection in Bali cattle on B-mode ultrasound imaging.
Effects of litter size and piglet sex on gestation length in Landrace pigs Sari, Merry Friana; Tarsisius Considus Tophianong; Yohanes Timbun Raja Mangihut Ronael Simarmata; Heny Nitbani
Ovozoa: Journal of Animal Reproduction Vol. 14 No. 2 (2025): Ovozoa: Journal of Animal Reproduction
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/ovz.v14i2.2025.85-91

Abstract

This study aims to investigate the relationship between litter size and piglet sex with gestation length in Landrace pigs. The research was conducted at a farm in Kupang, East Nusa Tenggara, involving 15 healthy Landrace sows monitored from December 2024 to February 2025. The methodology employed included the collection of primary data through direct observation and secondary data obtained from farm records. The results indicated that the average (±SD) gestation length for Landrace pigs was 113.53 ± 0.64 days, with a variation ranging from 113 to 115 days. Statistical analysis using the Spearman correlation test revealed no significant correlation between litter size and gestation length (p values= 0.115; p >0.05). These findings suggest that physiological adaptations in Landrace pigs maintain a consistent gestation length regardless of litter size. Additionally, factors such as maternal nutrition, environmental conditions, and management practices were identified as potential influencing factors. The study also found no correlation between piglet sex and gestation length, with p-values of 0.89 for male piglets and 0.602 for female piglets. Overall, the results indicate that neither litter size nor piglet sex are primary factors determining the length of gestation in Landrace pigs.
The effect of litter size and piglet sex on the gestation length of Landrace-Duroc crossbred pigs Olivia Claudya Lalo; Tarsisius Considus Tophianong; Yustinus Oswin Primajuni Wuhan; Heny Nitbani
Ovozoa: Journal of Animal Reproduction Vol. 15 No. 1 (2026): Ovozoa: Journal of Animal Reproduction
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/ovz.v15i1.2026.25-33

Abstract

This study was conducted to determine and identify the effect of litter size and piglet sex of on the gestation length of Landrace-Duroc crossbred pigs. Fifteen sows from the Manufarm farm in East Kupang district, Kupang regency, East Nusa Tenggara, Indonesia, were used in this study and were bred using artificial insemination (AI). Data were collected using a purposive sampling method based on certain criteria. Both primary and secondary data were utilized. Primary data were obtained through surveys, observations, and interviews, while secondary data were obtained from the farmers' data records. The research variables observed in this study included litter size, piglet sex, and gestation length. The data obtained were analyzed using Spearman's correlation test to examine the correlation between litter size and piglet sex with gestation length in Landrace-Duroc crossbred pigs. The results showed that the average litter size was 10.4 ± 0.986 piglets, consisting of 5.0 ± 1.852 males and 5.4 ± 1.882 females. The gestation length ranged from 111 to 114 days, with an average of 112 ± 0.926 days. The results of the Spearman correlation analysis showed that litter size was not significantly correlated with gestation length (p >0.05). Similarly, piglet sex showed no significant correlation with gestation length for both male (p >0.05) and female piglets (p= 0.254; p >0.05).
Co-Authors Gaina, Cynthia Dewi Nitbani, Heny Olivia Claudya Lalo Sari, Merry Friana Tri Utami Yohanes Timbun Raja Mangihut Ronael Simarmata Yustinus Oswin Primajuni Wuhan