The influence of large-scale loss of piglets on their some meat and felting qualities

Purpose: the goal is to study in the piglets of a large white breed of influence of body weight at birth (large-way) on the thickness of the scraping and the age of achieving the live weight of 100 kg.

Materials and methods. The object of the study - piglets (hrying and pigs) of a large white breed from birth until they achieve a live mass of 100 kg. The growth and development of piglets-sausage was studied by weighing them at birth. Primary data included 4215 weight records at the birth of tribal purebred piglets of a large white breed (hrying and pigs). Posyat, both live births and stillborn, weighed individually within 24 hours from the moment of birth. Weighing was carried out on scales with an accuracy of 100 g. The conditions of detention and feeding were the same. Three groups of experimental animals were formed, taking into account the live masses at birth. The first group was made up piglets with low live weight (1.0 kg and lower), the second - piglets with a normal body weight at birth (from 1.1 to 1.9 kg) and were divided into nine subgroups of 0.1 kg, the third - individuals with high live weight (2.0 kg and above). The thickness of the strika was measured in a lifestyle-meater ultrasonic device in the region over 6-7 breast vertebrae when a live mass of 100 kg is achieved (in the range of 60 kg to 150 kg).

Results. It has been established that the floor of the animal, multipleness, month-year of birth, herd, liveborn or stillborn piglets in litter affect the average weight of the birth of piglets, as well as the thickness of the scraping and the number of days to achieve a live weight of 100 kg. The difference in weight at birth between the floors was insignificant, and the males were somewhat heavier piglets. Piglets 3 groups have had a higher average weight at birth compared to piglets 1 and 2 groups. Bible weight decreased when the size of the litter increased with 4 piglets (n = 54) to 17 piglets (n = 22). Piglets with a low live weight at birth had the most thick thickness of the striking at a weight of 100 kg and the longest was taken to 100 kg. In animals with high body weight at birth was the thinnest thickness of the strik, and it took the least day to reach the live weight of 100 kg. The thickness of the strip that pigs with a living weight of 100 kg decreased with an increase in body weight at birth. In pigs with a low live weight at birth, the strik thickness was 0,5 mm thicker (p≥0,999) compared with pigs weighing 1.4 kg and 1.5 mm thick stuck (p≥0,999) compared with the 3rd group. A significant correlation -0,20 was found between the live body weight at birth and the thickness of the scraping when the animals reach 100 kg.

Conclusion. Thus, the sex of the animal, multipleness, liveborn or stillborn piglets in the litter - all this affected the middle weight at the birth of piglets, as well as the thickness of the scraping and the number of days to achieve live weight 100 kg. Analyzing the above data, we can assume that the ratio rate (weight of the birth of piglets) must be considered to further predict the productivity of the animal.

1. Reproductive, fattening and meat quality of pigs depending on the feeding conditions and the genotype of animals in the conditions of the Central Black Emergency Zone: Monograph / Samsonova O. E., Babushkin V. A. – Tambov, 2019. – 116 p.

2. Samsonova O. E. Indian assessment of constitutional features in pigs / O. E. Samsonova, V. A. Babushkin // Bulletin of the Michurin State Agrarian University. – 2019. – № 4 (59). – P. 96-98.

3. Samsonova O. E. Intensity of growth piglets on the creation of different breed combinations / O. E. Samsonova, V. A. Babushkin // Actual issues of agricultural biology. – 2019. – № 4 (14). – P. 42-46.

4. Translation Z.A. Instruction and interrelation of reproductive signs in a large white breed sowers // Zootechnia. – 2012. – №11. – P. 8.

5. Saifutdinov M. R. The effect of the mass of piglets at birth to their growth, development and safety in the sump period / M. R. Saifutdinov, R. A. Faizullin // Livestock. – 2018. – №1 (83). – P. 40-41.

6. Amaral Filha W. S. Reproductive performance of gilts according to growth rate and backfat thickness at mating / W. S. Amaral Filha, M. L. Bernardi, I. Wentz, F. P. // Bortolozzo Animal Reproduction Science. – 2010. – № 121. – P. 139-144.

7. Čechová M. Analysis of some factors influencing the birth weight of piglets / M. Čechová // Slovak Journal of Animal Science. – 2006. – №39. – P. 139-144.

8. Tummaruk P. Effect of birth litter size, birth parity number, growth rate, backfat thickness and age at first mating of gilts on their reproductive performance as sows / P. Tummaruk, N. Lundeheim, S. Einarsson, A. M. Dalin // Animal Reproduction Science. – 2001. – №66. – P. 225-237.