Viktoria B Leibova, Marina V Pozovnikova

Animal Husbandry and Fodder Production. 2024. Vol. 107, no 3. Р. 47-56.

doi:10.33284/2658-3135-107-3-47

Original article

Variability of body morphometric parameters in Saanen goats of different birth months and their relationship with productive and reproductive indicators

 

Viktoria B Leibova1, Marina V Pozovnikova2

1,2Russian Research Institute of Farm Animal Genetics and Breeding — Branch of the L.K. Ernst Federal Research Center for Animal Husbandry, St. Petersburg, Tyarlevo, Russia

1leib1406@yandex.ru, https://orcid.org/0000-0002-7017-9988

2pozovnikova@gmail.com, https://orcid.org/0000-0002-8658-2026

Abstract. Measuring the body size of an animal is the basis for assessing its development and optimal expression of economically useful traits. The development of dairy goats depends on many factors, including the month of birth. The aim of the study was to assess the development of goats born in different months in connection with reproductive rates and milk yield in the first lactation. On a farm with industrial technology for keeping dairy goats, two groups of animals were formed, obtained in different months of lambing: Group I – January (n=22) and Group II – March (n=20). At 3 and 6 months, the following measurements were taken from the goats: height at the withers, oblique body length, depth and width of the chest behind the shoulder blades. At 15 months, the height at the sacrum, chest and metacarpus girth were additionally measured. It was determined that in goats born in January (group I), all morphometric indices of the body at 3, 6 and 15 months were higher than in animals born in March (group II) (P≤0.05-0.001). Animals of groups I and II did not have statistically significant differences in milk yield for the first and second 100 days of lactation and age at first lambing, but the litter size was larger in group I compared to group II: 2.07±0.20 and 1.50±0.13, respectively (P≤0.05). In goats of group II, a positive linear correlation was found between milk yield for the first and second 100 days of lactation and chest width and metacarpus girth (P≤0.05 - P≤0.01). Low morphometric indices at 3, 6 and 15 months of age in animals of group II indicate insufficient development of animals, which negatively affects reproductive capacity and prevents the manifestation of the potential for milk productivity in goats.

Keywords: goats, body measurements, body indexes, milk yield, reproduction

Acknowledgments: the work was performed in accordance to the plan of research works for 2024 RRIFAGB FGGN-2024-0013 (124020200029-4).

For citation: Leibova VB, Pozovnikova MV. Variability of body morphometric parameters in Saanen goats of different birth months and their relationship with productive and reproductive indicators. Animal Husbandry and Fodder Production. 2024;107(3):47-56. (In Russ.). https://doi.org/10.33284/2658-3135-107-3-47

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Information about the authors:

Viktoria B Leibova, Cand. Sci. (Biology), Senior Researcher Laboratories of Genetics and Cattle Breeding, Russian Research Institute of Farm Animal Genetics and Breeding — Branch of the L.K. Ernst Federal Research Center for Animal Husbandry, 55a Moscow highway, Tyarlevo, St. Petersburg, 196601, tel.: +7-952-356-79-76.

Marina V Pozovnikova, Cand. Sci. (Biology), Senior Researcher Laboratories of Molecular Genetics, Russian Research Institute of Farm Animal Genetics and Breeding — Branch of the L.K. Ernst Federal Research Center for Animal Husbandry, 55a Moscow highway, Tyarlevo, St. Petersburg, 196601, tel.: +7-960-231-03-21.

The article was submitted 09.07.2024; approved after reviewing 12.08.2024; accepted for publication 09.09.2024.

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