Objective: The experiment was conducted to investigate the comparative effects of inorganic trace minerals (ITM) and three forms of organic trace minerals (OTM) (propionate, metho-chelated, and proteinate) on growth performance, edible meat yield, immunity, and profitability of commercial broilers.Materials and methods: A corn-soya based mash diet comprising four treatments each of 10 replicates were fed to 720 day-old Cobb 500 broiler chicks for 35 days (starter diet 021 days and grower diet 2235 days). The diets for comparison were as follows: diet 1: control diet with ITM premix at 1 kg/ton of feed (T1); diet 2: control diet supplemented with propionate trace minerals at 600 gm/ton (T2); diet 3: control diet supplemented with metho-chelated trace minerals at 500 gm/ton by reducing 225 gm methionine/ton of feed (T3); and diet 4: control diet supplemented with proteinate trace minerals at 500 gm/ton of feed (T4). Growth performance, carcass yield, and antibody titer (AT) data were recorded. Data were analyzed and interpreted using SAS Computer Package Program version 9.1.Results: Feeding propionate and proteinate OTM showed similar performance. Birds fed these two types (propionate and proteinate) or OTM had better performance in comparison with those receiving ITM and metho-chelated one. Proteinate group produced more wing meat and propionate group showed higher breast and drumstick meat yield as compared with those received the metho-chelated trace mineral and ITM. The birds belonging to OTM groups showed significantly higher AT level against infectious bursal disease. Proteinate minerals groups showed higher profitability followed by propionate fed broilers.Conclusion: Two forms of OTM, propionate and proteinate improved performance of commercial broilers over those of ITM and metho-chelated one. [J Adv Vet Anim Res 2019; 6(1.000): 66-73]

Kedah-Kelantan cattle (KK) being an indigenous breed are highly adapted to the hot-humid Malaysian climate and can survive in harsh, marginal environments. This makes the KK a valuable genetic resource, given the challenges of climate change and the changing demands of the livestock sector. Hitherto there is no comprehensive programme to genetically improve the purebred KK. Genetic improvement of the KK would be to fulfill the breeding objectives of increasing lean meat growth rate, enhancing meat quality, raising feed efficiency, improving fertility and maintaining adaptability. The breeding structure proposed is a 2-tier breeding structure, with a nucleus tier followed by a commercial tier below it. The nucleus tier would comprise of a number of pedigree farms run as a community
breeding project. A sire reference scheme is proposed, where progeny of reference sires are used as genetic links between pedigree herds and between years. Some guidelines are offered on the establishment
and implementation of the scheme. Modern breeding technology such as BLUP using an Animal Model, artificial insemination, embryo transfer, tissue scanning, MAS and MAI could be used as tools to support the KK genetic improvement programme. To address the problem of genetic erosion, emphasis should be given to the conservation and sustainable utilization of the KK. The programme is expected to have a high impact on the livestock sector. Substantial investments are needed to develop infrastructure and human capital associated with the KK breeding programme. The establishment of a KK breed society will improve awareness concerning the KK and protect the interests
of the KK breeding community.

In the conditions of the Republic of Belarus there was studied the possibility of increasing of meat yield productivity of ducklings of Temp cross in the conditions application of parental lines of Peking ducks of German breeding Stolle Seddin Vital (SVV) cross. In course of the study there was realized a comparative evaluation of linear and crossbred ducklings in accordance with meat qualities and blood indexes. There were presented the results of morphological composition of liner and crossbred duck carcasses; dynamics of changes of lipid exchange (total lipids; cholesterine; triglyceride) of ducklings; morphological composition of carcasses of father and mother combinations; blood indexes of ducklings; blood indexes of crossbred ducklings of final combinations. Research results showed that crossbred ducklings had high meat properties which exceeded the purebred ones. In ducklings with lower indexes of fattiness of carcasses there was noted the lowering of concentration of total lipids, cholesterine and triglyceride in blood.

The comparative analysis of parameters of an estimation of own efficiency of animal Landrace and Yorkshire breeds of the Canadian selection and their descendants has shown, that young pigs of the first generation surpassed the parents in a daily average gain, and in too time conceded on body length and fat thickness

In the conditions of the Agricultural Complex Belaya Rus the highest productive values of sows are obtained in period of the fourth-sixths farrowings. The highest level of reproductive traits is shown by sows of Landrace and Belorusian meaty breeds

Usage of boars of meat breeds Yorkshire, Duroc and Landrace of Canadian selection for crossing them with cross and pure breeds of sows promotes increase of fattening and meat-fat productivity of the obtained hybrids. The best parameters of feeding efficiency the hybrid young growth of combinations (BMхL)хL and (BMхL)хD at which the age of achievement of alive weight of 100 kg and a daily average gain has made 177,2 day (P less than 0,001) and 803 g (P less than 0,001), 179,5 day (P less than 0,001) and 801 g (P less than 0,001), differed at expenses of a forage of 3,38-3,40 fodder units accordingly

Possibility of increasing of meat productivity of ducklings of Temp cross after application of duck parental forms of German selection was studied in the conditions of the Republic of Belarus. In course of study there was revealed the dynamics of changes of live weight and feed expenses for live weight gain of linear and hybrid ducklings; as well as their meat qualities were determined. In course of studied there were used linear and hybrid ducklings obtained after crossbreeding of parental forms of Belarusian and German crosses of Peking breeds. There were formed 8 groups of one-day old ducklings. In the father's line the first (control) group was presented by pure bred line T1 of Temp cross; in the second group – by hybrid NT1 x T1, obtained after the direct crossing of male ducks of NT1 with female ducks of T1 lines; in the third group – by hybrid T1 x NT1, obtained after the backcrossing of male ducks of T1 with female ducks of NT1 lines; in the fourth group the combination NT1 was obtained by NT1 x NT1. In fifth group the maternal line was presented by pure line of T2 Temp cross (control); the sixth group was presented by hybrid T2N x T2 obtained after direct crossing of male ducks of T2N line with maternal ducks of T2 line; in the eighth group the combination T2N was obtained by T2N x T2N. Research results showed that application of Germal ducks in schemes of crossbreeding rendered the positive influence on live weight increasing of ducklings of father's line. In the carcasses of hybrid ducklings of all studied crossbreeds there was stated the decreasing number of skin with adipose layer and increasing number muscles including the pectoralis