Tegza I. M.

A. Baitursynov Kostanay State University, Kasakhstan

Comparative evaluation of progeny lines and quality

of auliekol breed in terms of LLP “Zholdas”

The main purpose of the evaluation- to identify the best in relation to tribal lines that the pairing will give the highest productive indicators of weight gain [1,2].

There were productive futures of underbrush studied and conducted scientific and economic experiment on calves of auliekol breed to learn the value lines in terms of LLP “Zholdas” Mendykara district of Kostanay province.

Investigations were carried out on three groups of calves that were born in 2012 and 20 heads in each group. Dividing these three groups as belonging to the lines of the Cache, Musketeer and Artist auliekol breed, selection was randomized. First group was consist on calves, belonging to Cache line, second group were Musketeers and third group were Artists. A comparative evaluation of calves enables to predict potential possibilities for further improvement of breed, as well as new lines of calves and auliekol breed such as: Cache, Musketeer and Artist.

During the industrial process, calves of all experimental groups were in the same condition of feeding and housing. In the result, calves of 1^st group dominated calves of 2^nd and 3rt groups. Analysis of this table shows that calves of Cache line had the highest live weight 532.4 kg, in the course of 18 months, Musketeers were 514.3 kg, and calves of Artist lines were 496.2kg. Live weight of calves in first group was higher than in second group in 18.1 kg or 3.4%, and calves of third group were 36.2 kg or 6.8%.

The average daily of live weight gain is an important indicator that can be judged on the growth rate of animal.

Table 1. Live weight of experimental calves, kg.

Age, month.	Groups
	I	II	III
	М±m, kg	М±m, kg	М±m, kg
From birth	32,2 ± 0,4	31,5±0,2	31,1±0,3
3	109,6 ± 1,3	103,2 ± 0,8	99,4 ± 0,7**
6	184,2 ± 2,1	177,4 ± 1,4	173,2 ± 2,4**
9	271,6 ± 2,4	263,1 ± 2,5*	254,1 ± 2,2***
12	364,5 ± 3,1	352,6 ± 3,2*	340,4 ± 3,2***
15	452,2 ± 3,3	436,2 ± 3,4*	422,3 ± 3,4***
18	532,4 ± 4,5	514,3 ± 3,1*	496,2 ± 4,1**

Notice: * – Р> 0,95; ** – Р> 0,99; *** – Р> 0,999

The most intensive growth in the subsidiary period characterized calves of Cache lines. The average of this period was about 0,971g, that means more that Musketeers in 19.0 g, and more that Artists in 72.0g. Animals under identical environmental conditions reacted differently, as evidence by the data in Table 2.

Table 2. Dynamic of the average daily gain, g

the average daily gain, g	Groups
	I	II	III
	М±m, кг	М±m, кг	М±m, кг
0-3	0,860 ± 0,3	0,797 ± 0,3	0,758 ± 0,4
3-6	0,829 ± 1,4	0,824 ± 0,4	0,820 ± 0,6*
6-9	0,971 ± 2,3	0,952 ± 1,1	0,899 ± 2,1*
9-12	1,032 ± 2,2	0,994 ± 2,3*	0,959 ± 2,4**
12-15	0,974 ± 3,4	0,929 ± 3,2*	0,910 ± 3,1**
15-18	0,891 ± 3,6	0,868 ± 3,5*	0,821 ± 3,5**
0-18	0,926 ± 4,1	0,894 ± 3,4*	0,861 ± 4,3**

The highest productivity of calves was in period between 9-12 months of growing, where the average daily gain of calves in first group was 1.032 g, which was more than second and third groups respectively in 38 g. and 73 g. These facts let us know about extremely high precocity of animals and the great genetic potential meat productivity. High-intensity of daily gain is largely explain itself due to balanced feed rations, and it makes for forming of a type of digestion able to digest and nutrient use efficiency.

Average daily gain in first group for the full period of growing and fettering was 0.926 g. that is more than 2^nd group in 3.5% and 3^rd group in 7.0%. In view of the aforesaid, great scientific and practical interest introduce the study of meat productivity, slaughter weight and carcass yield, depending on the linear facilities.

Table 4 - Results of slaughter steers at 18 months, M ± m, kg

Data	Groups
	I	II	III
Preslaughter weight, kg	516,4 ± 3,2	498,9 ± 3,1	481,3 ±2,8**
Carcass weight, kg	275,7 ± 4,3	265,6 ± 4,2	253,3 ±3,7*
Visceral fat mass , kg	14,5 ± 0,7	12,3 ± 1,1	10,4 ± 0,8
Slaughter weight, kg	290,2 ± 3,6	277,9 ± 3,4	263,7 ± 3,2*
Carcass yield, %	56,2	55,7	54,8

Comment: * – Р> 0,95; ** – Р> 0,99

Calves in carcass yield met the requirements for meat productivity, and it was 54.8 or 56.2%, with slightly higher than in a group number one. Eventually, calves from the 1^st group dominated the 2^nd group in 3.7%, and the 3^rd group in 8.1%. Slaughter weight of calves in group 1 was higher that calves in second and third groups, respectively 12.3-26.5 kg or 4.2-9.1%. Visceral fat mass was higher in group 1, and higher than groups 2 and 3 in 2.2-4.1 kg.

List of literature:

1. Smagulov AK Specialized meat breeds of cattle. Almaty. - 2012 - 20c.

2. Kalinin G. Influence of technology and fattening steers genotype on meat quality / G. Kalinin, Dolgacev S. / / Dairy and beef cattle. - 2011 - № 7.